Pressure Switches

Type Z
The actual results prove
of reliability.
A Total Supplier of Pressure Switches
Taihei Boeki Co., Ltd.

QEC25000 ISO 9001: 2015

Design and manufacturing of pressure switch
High-performance Pressure
Switches supported
by the original technology
of Taihei Boeki

Z Family

Z
Taihei Boeki has always moved through with
the history of pressure switches of Japan. The

Series
type Z pressure switches were originated by
Taihei Boeki, which have been developed with
its long time study respecting to various
requirements of customers. Utilizing its
original technology and establishing simple
design structure, improvement of the
reliability, compact size and price-reduction
have been realized at the same time. Diaphragm / Piston Type

The Z family fully lined up with the“Z series” Pressure Switches

that is, so to say, a standard of pressure
switches, the“New Z series”featuring high
proof pressure and extremely small
d i f f e r e n t i a l , a n d t h e“T E X - Z s e r i e s”f o r
explosion-proof applications, has become
reliable brand boasting the sales result of
more than 700,000 units since its first release
in 1980.
 New Z TEX- Z
Series Series

Diaphragm Actuated Small Differential Explosion-proof (ExdIICT6)

and High Proof Pressure Type
Pressure Switches and
Pressure Switches and
Differential Pressure Switches
Differential Pressure Switches
 Product List Reference Chart of The Z Family Products

Z Series

Name of Product Pressure Switches Pressure Switches Pressure Switches

(Diaphragm Actuator) (Piston Actuator) (Piston Actuator)

Model
TCZ□□ TDZ□□
Z□□□PM
TCZ□□□F TDZ□□□F
Z□□□PMＷ
TCZ□□□K TDZ□□□K

Appearance

Pressure Range 0.005-1.8 MPa 0.1-63.5 MPa 1-50 MPa

0.05-18 kgf/cm2 1-635 kgf/cm2 10-500 kgf/cm2

Pressure Medium
Air, Water, Oil, Gases, Steam Oil Water, Steam, Oil

Actuator
Diaphragm Piston Piston

Material of the Pressure Cylinder：Brass (Nickel plated),

Sensing Element Nitrile Rubber SUS303 SUS420F・SUS316
Piston：Brass, SUS420F

Micro Switch
SPDT (1a, 1b)
SPDT(1c)
In addition to a standard type, a micro-load type (for 24VDC) and
DPDT is also available.
a sealed type (environment resistance) are also available.

Applicable Standards CCC approved ＊ and CE approved ＊＊

＊Except with the pilot lamps CCC approved
＊＊Except an outside adjustable type and a sealed type

Remarks An outside adjustable type (model“K”) and

Differential is not adjustable.
a fixed differential type (model“F”) are also available.

▼ ▼
p.12〜17 p.18

4
New Z Series
Pressure Switches Differential Pressure Switches
Differential Pressure Switches
(Small differential, high proof (Small differential, high proof
(Small differential, high proof pressure)
pressure) pressure)

Z□□□DD
Z □□□ D Z□□□DDW Z1/4DD
Z1/30DD
Z □□□ DW Z□□□DDEX Z1/4DDW
Z□□□DDWEX

0.002-28 MPa 0.002-21 MPa 0.0005-6.6 MPa 0-46 kPa

0.02-280 kgf/cm2 0.02-210 kgf/cm2 0.005-66 kgf/cm2 0-0.46 kgf/cm2

Air, Water, Oil, Gases, Steam

Diaphragm

Nitrile Rubber,
SUS316L Polyimide, SUS316
Aluminum

SPDT(1c)
SPDT(1c) only
DPDT is also available.

CCC approved

Differential is not adjustable. Dead band is not adjustable.

▼ ▼ ▼ ▼
p.24 p.26 p.28 p.30

5
 Reference Chart of The Z Family Products

TEX-Z Series

Name of Product Standard Type Micro-Pressure Switches Standard Type

(Diaphragm Actuator) (Diaphragm Actuator) (Piston Actuator)

Model

TEX□-Z□□□D TEX□-Z1/4D TEX□-Z□□□P

Appearance

Pressure Range 0.005-1.8 MPa 3-25 kPa 0.1-63.5 MPa

0.05-18 kgf/cm2 0.03-0.25 kgf/cm2 1-635 kgf/cm2

Pressure Medium
Air, Water, Oil, Gases, Steam Oil

Actuator
Diaphragm Piston

Material of the Pressure Cylinder：Brass (Nickel plated),

Nitrile Rubber SUS303
Sensing Element
Piston：Brass, SUS420F

Micro Switch
SPDT (1a, 1b)
In addition to a standard type, a micro-load type (for 24VDC) and
a sealed type (environment resistance) are also available.

Applicable Standards
ExdIICT6 (explosion-proof class) approved

Remarks

▼ ▼ ▼
p.36 p.38 p.40

6
 Pressure Switches Differential Pressure Switches
Standard Type Compound Vacuum
(Small differential, high proof (Small differential, high proof
(Bellows Actuator) Pressure Switches
pressure) pressure)

TEX-Z□□□DD
TEX□-Z□□□BS TEX□-Z□□□BR TEX-Z□□□DH
TEX-Z□□□DDEX

0.005-11.5 MPa 80kPaVac-900kPa 0.002-28MPa 0.0005-21MPa

0.05-115 kgf/cm2 600mmHgV-9kgf/cm2 0.02-280kgf/cm2 0.005-210kgf/cm2

Air, Water, Oil, Gases, Steam

Bellows Diaphragm

SUS316L Phosphor Bronze SUS316L Polyimide, SUS316

SPDT (1a, 1b)

In addition to a standard type, a micro-load type (for 24VDC) and SPDT(1c) only
a sealed type (environment resistance) are also available.

ExdIICT6 (explosion-proof class) approved

Differential is not adjustable. Dead band is not adjustable.

▼ ▼ ▼ ▼
p.42 p.44 p.46 p.48

7
 General-purpose Pressure Switches

Z Series

A standard of pressure switches brought

forth by the original technology of

Taihei Boeki.

The Z series are compact, high-

performance and high general purpose

pressure switches.

8
 Pressure Switches Z

■ High reliability and outstanding cost performance

Adopted a simple and robust original-structure generated from the

long-time research and development of Taihei Boeki, the Z series

pressure switches have realized compatibility of high reliability and

outstanding cost performance.

An adjustable differential type, an outside adjustable type, or a fixed

differential type can be selected in accordance with your applications.

■ A diaphragm or a piston has been adopted as the actuator.

A diaphragm actuator for low pressure applications and a piston

actuator for high pressure applications have been adopted respectively.

The piston actuator has adopted a sealed piston configuration sealed

with an O-ring and a cup seal.

■ Slim and compact design

An external appearance of the Z series is exceptionally slim and

compact. The common design of all types gives good impression of

uniformity. And, all encapsulated module parts in the housing realize

user-friendly operation and safety.

9
Z Pressure Switches

Structural Drawing of the Z Series

Conduit Housing Gasket

A G1/2 parallel thread is provided. Using The housing material is robust die-cast aluminum,
a commercially available water-proof and inner modules are sealed with a nitrile rubber
connector enhances sealing capability. gasket. This configuration makes the Z pressure
switch dust-proof, oil-proof and drip-proof.
Built-in Switch
The built-in micro switch consists of 1a Mounting
(N.O.)-1b (N.C.) double-throw contacts, Equipped four mounting halls outside of the cover
and has more than 15 million-time facilitate mounting of a pressure switch without
duration of mechanical life. removing its cover.

Optional Lamp
Assembly
Factory Setting ①
The snap is pre-set at the factory so that it
actuates at the most suitable point.

Differential Lock Spring

Adjusting differential
(dead band) pressure
The differential can be set at any Differential Spring
point within the differential
adjustment range. The set point is Factory Setting ②
self-locked and does not come lose. The differential pick-up point is pre-set
at the factory.

Lock Spring doubling as Range Scale

The accuracy of the range scale is approximate
±10%.

Operating Rod

Adjusting set-pressure
Rotate the range adjusting nut using a flat- Lower Spring Sheet
blade screw driver. The set point is self-
locked and does not come lose.

Belleville Spring
Actuator
Diaphragm actuators are for low-pressure
applications and piston actuators are for
high-pressure applications. The eight
kinds of actuators comprise twelve
different ranges. This drawing shows a
diaphragm actuator type.

Pressure Port
The pressure port connection is Rc1/4 for all types.

10
 Pressure Switches Z

Specifications
Operating Ambient Temperature：−10〜＋80℃ Material of the Pressure：TCZ-5、1、2　　　
Operating Ambient Humidity：Less than or equal to 95%RH Sensing Element 　 Diaphragm………… Nitrile rubber (Buna-N)
Allowable Operating Frequency：120 cycles ／minute (Models with“F”or“K”　 Flange……………………Die-cast aluminum
Enclosure Type：IP65 (Outside Adjustable Type is excluded) option are the same.) 　 O-ring……………… Nitrile rubber (Buna-N)
Insulation Resistance：Between discontinuous terminals, and between each terminal ：TDZ-1　　　
and non-charging metal; Over 100MΩ (at DC500V) 　 Cylinder……………… Brass (nickel plated)
Withstand Voltage：Between discontinuous terminals; 1000VAC, 50/60Hz, 1 minute 　 Piston………………………………… Brass
Between each terminal and non-charging metal, and ground; 　 O-ring……………… Nitrile rubber (Buna-N)
2200VAC 50/60Hz, 1minute 　 Cup Seal………………………………Teflon＊
Contact Resistance：Less than or equal to 25 Ω (initial value) ：TDZ-3、4、7、13、34、47
Surge Dumper Orifice：Diaphragm actuator�������� φ1.5 × 1.5 　 Cylinder……………… Brass (nickel plated)
　Piston actuator���������� φ0.8 × 1.5 　 Piston……………………………… SUS420F
　(Except TDZ-1 that has no orifice) 　 Bushing……………………………… Brass
Electrical Lifetime：Refer to the electrical lifetime curve in the diagram shown below. 　 O-ring……………… Nitrile rubber (Buna-N)
Repeatability：±0.5％ of max range 　 Cup Seal………………………………Teflon＊
Z350PM(W) and Z500PM(W) are ±1％ of max range ：TDZ-8、78
　 Cylinder…………………………… SUS303
Electrical Lifetime Curve 　 Piston……………………………… SUS420F
　 Bushing……………………………… Brass
Operating Number of Times (×104 times)

1,000
700
　 O-ring……………… Nitrile rubber (Buna-N)
500
AC250V COS =1
　 Cup Seal………………………………Teflon＊
300
：Z350PM(W), Z500PM(W)
200
　 Cylinder…………………………… SUS316
　 Piston……………………………… SUS420F
100
70 　 O-ring…………………………………… Viton
50
＊Teflon is the registered trademark of DuPont.
30

20

0 2 4 6 8 10 12
Switching Current (A)

How to order
TCZ Diaphragm
Type of Actuators
TDZ Piston L 100V/200V AC or DC
Pilot Lamp
(not CCC Approved) L24 DC24V
- Standard
Micro Switches LF Free Voltage DC 30V MAX
(not CE Approved)
0 Micro-load

N Upside-down Name Plate

Special Type (not CE Approved)

S Sealed Type Micro Switch (not CE Approved)

Range Indication Adjustable Differential Type
(numeral)
F Fixed Differential Type

K Outside Adjustable Type (not CE Approved)

＊An outside adjustable type (symbol“K”), a sealed micro switch type (symbol“S”), a switch equipped with a free-voltage pilot lamp (symbol“LF”),
and a pressure switch with custom specifications are not CE approved.
＊CCC approved products is not available for the with pilot lamps.

Collective Designation of the series

Piston
High Pressure Steam and water correspondence

Z P M Special Type
SPDT Standard
Micro switch type
Range
W DPDT Standard
When CCC approved is needed, add appendix of-C to the end of model number.
Example : An approved of TCZ-1 …… TCZ-1-C

11
Z Pressure Switches

Pressure Switches
(Diaphragm Actuator)
TCZ□□□／TCZ□□□ F

Features
　● T he pressure switches have adopted a nitrile
rubber diaphragm as the pressure sensing
element.
　● The pressure switches can be used for various
pressure medium such as air, water, oil, gases
and steam.
　● T he pressure switches are applicable to
pressure ranging from 0.005 to 1.8MPa.
　● T he micro switch is selectable from a SPDT
standard rating type, a micro-load type (for 24V
DC), and a sealed type (environment resistance).
　● A fixed differential type (symbol“F” ) is also
available.
　● CCC and CE approved.
　　(Please note that CE approved switches is not
available for the sealed type. CCC certified
products is not available for the with pilot lamps.)

Models Range Differential (Dead Band) Proof

M I N.：Minimum setting point of Add to the Range Value Pressure
falling pressure. MPa（kgf/cm2） MPa（kgf/cm2）
MAX.：Maximum setting point of
rising pressure.
MPa（kgf/cm2）
Lower Range Middle Range Higher range
MIN. - MAX. MIN. - MAX. MIN. - MAX. MIN. - MAX.

Adjustable TCZ-5 0.005-0.52 （0.05-5.2） 0.02-0.1 （0.2-1） 0.02-0.11 （0.2-1.1） 0.03-0.12 （0.3-1.2） 1.8 （18）
Differential
TCZ-1 0.005-1 （0.05-10） 0.03-0.2 （0.3-2） 0.04-0.21 （0.4-2.1） 0.05-0.22 （0.5-2.2） 3 （30）
(Dead Band)
Type TCZ-2 0.02 - 1.8 （0.2-18） 0.08-0.39
（0.8-3.9） 0.08-0.4 （0.8-4） 0.12-0.42 （1.2-4.2） 4 （40）
Fixed TCZ-5F 0.005-0.52 （0.05-5.2） 0.02 （0.2） 0.03 （0.3） 0.03 （0.3） 1.8 （18）
Differential
TCZ-1F 0.005-1 （0.05-10） 0.03 （0.3） 0.04 （0.4） 0.05 （0.5） 3 （30）
(Dead Band)
Type TCZ-2F 0.02 - 1.8 （0.2-18） 0.08 （0.8） 0.1 （1.0） 0.12 （1.2） 4 （40）

●T
 he differential (dead band) becomes larger to a certain extent in accordance with increase of the pressure. The above chart shows the
differential adjustable range related to the pressure ranges divided into three stages.
●S
 elect a type of your pressure switch so that it can be used within the middle of the range as much as possible.
●T
 he differential (dead band) of Min. of adjustable differential type and fixed differential type indicates value at the middle of the pressure range.
The differential (dead band) becomes smaller than the indicated value within the lower range, and larger within the higher range.

12
 Pressure Switches Z

TCZ-5（F） Mass：approx. 0.7kg

TCZ-1（F）
TCZ-2（F）

（ Unit：millimeter ）

13
Z Pressure Switches

Pressure Switches
(Piston Actuator)
TDZ □□□／TDZ □□□ F

Features
　● T he pressure switches have adopted a brass
(nickel plated) or SUS420F piston as the
pressure sensing element.
　● A n O-ring and a Teflon cup seal have been
adopted as a seal of the piston, and this
configuration realizes long-time duration of the
pressure switches.
　● T he pressure switches are applicable to
pressure ranging from 0.1 to 63.5MPa.
　● T he micro switch is selectable from a SPDT
standard rating type, a micro-load type (for 24V
DC), and a sealed type (environment resistance).
　● A fixed differential type (symbol“F” ) is also
available.
　● CCC and CE approved.
　　(Please note that CE approved switches is not
available for the sealed type. CCC certified
products is not available for the with pilot lamps.)

Models Range Differential (Dead Band) Proof

M I N.：Minimum setting point of Add to the Range Value Pressure
falling pressure. MPa（kgf/cm2） MPa（kgf/cm2）
MAX.：Maximum setting point of
rising pressure.
MPa（kgf/cm2）
Lower Range Middle Range Higher range
MIN. - MAX. MIN. - MAX. MIN. - MAX. MIN. - MAX.
TDZ-1 0.1-3.2 （1-32） 0.2-0.7 （2-7） 0.2-0.7 （2-7） 0.25-0.8 （2.5-8） 10 （100）
TDZ-3 0.2-7 （2-70） 0.25-1.3 （2.5-13） 0.28-1.4 （2.8-14） 0.3-1.5 （3-15） 35 （350）
TDZ-4 0.5-20.5 （5-205） 0.6-3.8 （6-38） 0.7-4 （7-40） 1.2-4.2 （12-42） 70 （700）
Adjustable TDZ-7 1-40 （10-400） 1.4-7.8 （14-78） 1.5-8 （15-80） 1.8-8.5 （18-85） 70 （700）
Differential
TDZ-8 2-63.5 （20-635） 2-11 （20-110） 2.5-12 （25-120） 3-12 （30-120） 120 （1,200）
(Dead Band)
Type TDZ-13 0.2-3.5 （2-35） 0.25-1.3 （2.5-13） 0.3-1.4 （3-14） 0.35-1.5 （3.5-15） 35 （350）
TDZ-34 0.5-10 （5-100） 0.6-3.8 （6-38) 0.7-3.8 （7-38） 1.2-4 （12-40） 70 （700）
TDZ-47 1-20 （10-200） 1.4-7.5 （14-75） 1.5-8 （15-80） 1.8-8.5 （18-85） 70 （700）
TDZ-78 2-30 （20-300） 2-11 （20-110） 2.5-12 （25-120） 3.5-12 （35-120） 120 （1,200）
TDZ-1F 0.1-3.2 （1-32） 0.2 （2） 0.25 （2.5） 0.3 （3） 10 （100）
TDZ-3F 0.2-7 （2-70） 0.25 （2.5） 0.28 （2.8） 0.3 （3） 35 （350）
TDZ-4F 0.5-20.5 （5-205） 0.7 （7） 0.8 （8） 1.2 （12） 70 （700）
Fixed TDZ-7F 1-40 （10-400） 1.4 （14） 1.5 （15） 1.8 （18） 70 （700）
Differential
TDZ-8F 2-63.5 （20-635） 2 （20） 2.5 （25） 3 （30） 120 （1,200）
(Dead Band)
Type TDZ-13F 0.2-3.5 （2-35） 0.3 （3） 0.33 （3.3） 0.35 （3.5） 35 （350）
TDZ-34F 0.5-10 （5-100） 0.7 （7） 0.8 （8） 1.2 （12） 70 （700）
TDZ-47F 1-20 （10-200） 1.4 （14） 1.5 （15） 1.8 （18） 70 （700）
TDZ-78F 2-30 （20-300） 2.5 （25） 2.8 （28） 3 （30） 120 （1,200）
● The differential (dead band) becomes larger to a certain extent in accordance with increase of the pressure. The above chart shows the
differential adjustable range related to the pressure ranges divided into three stages.
● Select a type of your pressure switch so that it can be used within the middle of the range as much as possible.
● The differential (dead band) of Min. of adjustable differential type and fixed differential type indicates value at the middle of the pressure range.
The differential (dead band) becomes smaller than the indicated value within the lower range, and larger within the higher range.
● A PT1/8 drain port is equipped on the side of the body so that the pressure switch is used with piping for drains beforehand, in an environment
that will not allow even a small amount of seepage. The drain port must be opened to the atmospheric pressure.

14
 Pressure Switches Z

TDZ-1（F）／TDZ-3（F） Mass：approx. 0.7kg

TDZ-4（F）／TDZ-7（F）
TDZ-8（F）／ TDZ-13（F）
TDZ-34（F）／TDZ-47（F）
TDZ-78（F）

（ Unit：millimeter ）

7'=
7'=

㉁㔞ࠉ㸸ࠉ⣙㸮㸬㸵㸰.J
㉁㔞ࠉ㸸ࠉ⣙㸮㸬㸵㸰.J

15
Z Pressure Switches

Pressure Switches（Outside Adjustable type）

(Diaphragm Actuator／Piston Actuator)
TCZ□□□ K／TDZ □□□ K

Features
　● W orking pressure can be adjusted at fixed
width by external handle. The adjustable
pressure is based on setting by range adjust
nut.
　● It can't adjust full range by external handle.
　● T he micro switch is selectable from a SPDT
standard rating type, a micro-load type (for
24VDC), and a sealed type (environment
resistance).
　● CCC approved (except with the pilot lamps).

Models Range Outside Differential Proof

M I N.：Minimum setting point of Adjustable (Dead Band) Pressure
falling pressure. Range Add to the Range Value（Central Value of Middle Range） MPa（kgf/cm2）
MAX.：Maximum setting point of MPa（kgf/cm2） MPa（kgf/cm2）
rising pressure.
MPa（kgf/cm2）
MIN. - MAX. MIN. - MAX. Lower Range Middle Range Higher range

TCZ-5K 0.005-0.52 （0.05-5.2） 0-0.11（0-1.1） 0.03 （0.3） 0.04 （0.4） 0.05 （0.5） 1.8 （18）
Diaphragm
TCZ-1K 0.005-1 （0.05-10） 0-0.21（0-2.1） 0.05 （0.5） 0.08 （0.8） 0.09 （0.9） 3 （30）
Actuator
TCZ-2K 0.02-1.8 （0.2-18） 0-0.42（0-4.2） 0.12 （1.2） 0.16 （1.6） 0.18 （1.8） 4 （40）
TDZ-1K 0.1-3.2 （1-32） 0-0.7 （0-7） 0.25 （2.5） 0.3 （3） 0.35 （3.5） 10 （100）
TDZ-3K 0.2-7 （2-70） 0-1.4 （0-14） 0.3 （3） 0.4 （4） 0.5 （5） 35 （350）
Piston
TDZ-4K 0.5-20.5 （5-205） 0-4 （0-40） 0.8 （8） 1.1 （11） 1.3 （13） 70 （700）
Actuator
TDZ-7K 1-40 （10-400） 0-8 （0-80） 1.6 （16） 2 （20） 2.2 （22） 70 （700）
TDZ-8K 2-63.5 （20-635） 0-12 （0-120） 3 （30） 3.5 （35） 4 （40） 120（1,200）

● The differential (dead band) is not adjustable.

● The differential (dead band) becomes smaller than the indicated value within the lower range, and larger within the higher range.
● Select a type of your pressure switch so that it can be used within the middle of the range as much as possible.
● A PT1/8 drain port is equipped on the side of the body so that the pressure switch is used with piping for drains beforehand, in an environment
that will not allow even a small amount of see page. The drain port must be opened to the atmospheric pressure (piston actuator only).

16
 Pressure Switches Z

TCZ-5K Mass：approx. 0.8kg

TCZ-1K
TCZ-2K

（ Unit：millimeter ）

TDZ-1K Mass：approx. 0.8kg

TDZ-3K
TDZ-4K
TDZ-7K
TDZ-8K

（ Unit：millimeter ）

17
Z Pressure Switches

Pressure Switch (Piston Actuator)

(Available for high pressure steam and water)
Z □□□ PM／Z □□□ PMW

Features
　● The medium besides the oil pressure can also
use the high-pressure steam and water by the
specific technology.
　● The sealing material is Viton, a piston made of
SUS316 is adopted.
　● T he pressure switches are applicable to
pressure from 1 to 50 MPa ranges.
　● In addition to a SPDT standard micro switch, a
DPDT micro switch is also available.
　● CCC approved.

Models Range Differential Rated Pressure Proof Pressure

M I N.：Minimum setting point of (Dead Band) Maximum Pressure MPa（kgf/cm2）
falling pressure. MPa（kgf/cm2） in Continuous Use
MAX.：Maximum setting point of MPa（kgf/cm2）
rising pressure.
MPa（kgf/cm2）
MIN. - MAX. MIN. - MAX.

Z350PM 1-35 （10-350） 1.5-2 （15-20） 40　（400） 70　（700）

SPDT
Z500PM 2-50 （20-500） 2-2.5 （20-25） 63　（630） 100　（1,000）
Z350PMW 1-35 （10-350） 1.8-2.5 （18-25） 40　（400） 70　（700）
DPDT
Z500PMW 2-50 （20-500） 2.5-3.0 （25-30） 63　（630） 100　（1,000）

● The differential (dead band) is not adjustable. It is fixed within the range of indicated value.
● The differential (dead band) indicates value at the middle of the pressure range. The differential (dead band) becomes smaller than
the indicated value within the lower range, and larger within the higher range.

18
 Pressure Switches Z

Z350PM Mass：approx. 0.8kg

Z500PM

62
52
G1/2 55

9.5
（PF1/2） 36
MTG.
4-φ5.2

93

110
20

185
12.5

65.5
Rc1/8
（PT1/8）
29HEX

Rc1/4（PT1/4）
26.5 （ Unit：millimeter ）
PRESSURE
PORT

Z350PMW Mass：approx. 0.9kg

Z500PMW
62
52
G1/2 66
9.5

(PF1/2) 36
MTG.
4-φ5.2
93

110

20
200
12.5

80.5

Rc1/8
(PT1/8)
29HEX

Rc1/4(PT1/4) 26.5 （ Unit：millimeter ）

PRESSURE PORT

19
 Diaphragm (Stainless Steel or Polyimide) Type Pressure Switches

New Z Series

Inheriting the mechanism of the Z series,

the New Z series are pressure switches

that realize high proof pressure and

extremely small differential (dead band)

at the same time.

20
 New
Pressure Switches Z

■ Highly reliable basic configuration

Inheriting the distinguished original configuration of the Z series, the

New Z series are pressure switches and differential pressure switches

that realize high proof pressure and extremely small differential by

adopting a stainless steel or a polyimide diaphragm.

■ The pressure switchers having characteristic features of

high proof pressure and extremely small differential
(dead band)

The pressure switches have adopted a stainless steel diaphragm, and

have characteristic features of high proof pressure and extremely small

differential (dead band). They can be used for such pressure media as

high pressure water or steam up to the maximum range of 28MPa.

■ A ployimide diaphragm has been adopted to the

differential pressure switches.

The differential pressure switches that have adopted a ployimide

diaphragm allow you to set very small differential pressure even though
your system pressure is high.

21
New
Z Pressure Switches

Structural Drawing of the New Z Differential Pressure Switch

Micro Switch

Differential
Adjusting Nut

Operating Rod
Range Spring

Pressure Plate Lp

Low Pressure
Side Port
Pressure Sensing Hp
Element Diaphragm
Pressure Plate

High Pressure
Side Port

Operating mechanism of the New Z series differential pressure switch

When differential pressure (Hp - Lp) between higher pressure and lower pressure is applied
to the diaphragm, its force received by the pressure plate is transmitted to the operating
rod that is regulated by the range spring. The force, then, actuates the on-off micro switch.
The differential pressure can be adjusted with the differential adjusting nut.

22
 New
Pressure Switches Z
Specifications

Housing Material：Die-cast Aluminum

Painting Color：7.5BG4/1.5
Gasket Material：Nitrile Rubber (Buna N)
Enclosure Type：IP65
Pressure Port：Rc1/4（PT1/4）
Conduit：G1/2（PF1/2）
Operating Ambient Temperature：−20℃〜＋80℃ (no condensation)
Allowable Operating Frequency：120 cycles / minute
Insulation Resistance：Between discontinuous terminals, and between each terminal and non-charging
metal; Over 100MΩ (at DC500V)
Withstand Voltage：Between each terminal and non-charging metal, and ground; 2000VAC
50／60Hz, 1minute
Allowable Medium Temperature：SUS316(L)………………………………… −20〜＋200℃
　Polyimide………………………………… −20〜＋200℃
　Nitrile Rubber…………………………… −10〜＋80℃
　(Provided the temperature shall be within the range that will not effect on the
switch mechanism.)
Micro Switch：SPDT……………………………………… M4
Earth Terminal：M3
Repeatability：Standard Pressure Switch……………… ±1％ of Max range
Differential Pressure Switch…………… ±1％ of Max differential
Material of the Pressure：Z1.7D、005D、025D、035D、070D、120D、280D
Sensing Element 　　Diaphragm……………………………… SUS316L
　　Diaphragm Flange…………………… SUS316 L
　　Pressure Port………………………… SUS316
　　O-ring…………………………………… Viton＊
：Z2.5DD、005DD、012DD、020DD、□□□ DDEX、1/4DD
　　Diaphragm……………………………… Polyimide
　　Diaphragm Flange…………………… SUS316
　　Pressure Plate………………………… SUS316
　　Pressure Port………………………… SUS316
　　O-ring…………………………………… Viton＊
：Z1/30DD
　　Diaphragm……………………………… Nitrile Rubber（Buna N）
　　Cavity…………………………………… Steel (chrome plated)
　　Pressure Plate………………………… Aluminum
　　Pressure Port………………………… SUS303
　　Assembly Screw……………………… Steel（chrome plated）
　　Gasket………………………………… Non-asbestos Joint Sheet
　　O-ring…………………………………… Viton＊

＊Viton is the registered trademark of DuPont.

How to order

Diaphragm Actuator

Standard Pressure Switch

Collective Standard Type
D Differential Pressure Switch
Designation EX High Proof Pressure
of the Series

Z D Special Type

Range
When CCC approved is needed, add appendix of-C to the end of model number.
Example : An approved of Z005D …… Z005D-C

23
New
Z Pressure Switches

Pressure Switches
(Diaphragm Actuator)
Z □□□ D／Z □□□ DW

Features
　● The pressure switches adapt to high pressure
and extremely small dfferential (dead band) at the
same time.
　● The switches adapt up to the maximum range of
28MPa.
　● A SUS316L diaphragm is adopted as a pressure
sensing element.
　● The diaphragm actuated pressure switches can
be used for various pressure medium such as air,
water, oil, gases and steam.
　● In addition to a SPDT standard micro switch, a
DPDT micro switch is also availavle.
　● CCC approved.

Type of the Models Range Differential Rated Pressure Proof Pressure

Micro Switches M I N.：Minimum setting point of (Dead Band) Maximum Pressure MPa（kgf/cm2）
falling pressure. Add to the Range Value in Continuous Use
MAX.：Maximum setting point of （Central Value of Middle Range） MPa（kgf/cm2）
rising pressure.
MPa（kgf/cm2）
MPa（kgf/cm2）
MIN. - MAX.

Z1.7D 0.002-0.17 （0.02-1.7） 0.003 （0.03） 2.3 （23） 3.5 （35）

Z005D 0.005-0.5 （0.05-5） 0.005 （0.05） 2.3 （23） 3.5 （35）
Z025D 0.02-2.5 （0.2-25） 0.025 （0.25） 7 （70） 12 （120）
SPDT Z035D 0.05-3.5 （0.5-35） 0.05 （0.5） 10 （100） 41 （410）
Z070D 0.1-7 （1-70） 0.12 （1.2） 12 （120） 41 （410）
Z120D 0.2-12 （2-120） 0.2 （2） 15 （150） 41 （410）
Z280D 0.2-28 （2-280） 0.7 （7） 35 （350） 42 （420）
Z1.7DW 0.002-0.17 （0.02-1.7） 0.0045 （0.045） 2.3 （23） 3.5 （35）
Z005DW 0.005-0.5 （0.05-5） 0.0075 （0.075） 2.3 （23） 3.5 （35）
Z025DW 0.02-2.5 （0.2-25） 0.04 （0.4） 7 （70） 12 （120）
DPDT Z035DW 0.05-3.5 （0.5-35） 0.075 （0.75） 10 （100） 41 （410）
Z070DW 0.1-7 （1-70） 0.18 （1.8） 12 （120） 41 （410）
Z120DW 0.2-12 （2-120） 0.3 （3） 15 （150） 41 （410）
Z280DW 0.2-28 （2-280） 1 （10） 35 （350） 42 （420）

● The differential (dead band) is not adjustable.

● The differential (dead band) indicates value at the middle of the pressure range. The differential (dead band) becomes smaller than the
indicated value within the lower range, and larger within the higher range.
● Only“C”contact micro switch is available.

24
 New
Pressure Switches Z
Z1.7D Mass：approx. 0.9kg
Z005D ※ Please note : Total length of DPDT is
Z025D longer than SPDT.




 












+(;

a side view of DPDT +(;
（ Unit：millimeter ） 

Z035D Mass：approx. 0.7kg

Z070D
Z120D ※ Please note : Total length of DPDT is
Z280D longer than SPDT.





 


 







 








+(;


a side view of+(;
DPDT+(;
（ Unit：millimeter
） 

25
New
Z Differential Pressure Switches

Differential Pressure Switches

(Diaphragm Actuator)
Z □□□ DD／Z □□□ DDW／Z □□□ DDEX／Z □□□ DDWEX

Features
　● The differential pressure switches adapt to high
pressure and extremely small dead band at the
same time.
　● The switches adapt up to the maximum range
of 21MPa. The adjustable differential range is
0.002 to 3.5MPa.
　● A polymide diaphragm is adopted as a pressure
sensing element.
　● To realize the high proof pressure and the small
dead band at the same time, the stroke and
the clearance have been made smaller. (It is
recommended to use an approx. 20μm filter for
the bo th hig he r pr e ssur e side a nd lo wer
pressure side.)
　● The diaphragm actuated pressure switches can
be used for various pressure medium such as
air, water, oil, gases and steam.
　● CCC approved.

Type of the Models Range Sensitivity Range of Adjustable Difference Proof Pressure
Micro Switches MPa（kgf/cm2） (Dead Band) The switch is reset on decreasing MPa（kgf/cm2）
The switch is activated on pressure difference.
increasing pressure difference. MPa（kgf/cm2）
MPa（kgf/cm2）
MIN. - MAX. MIN. - MAX.

Z2.5DD 0.002-2 （0.02-20） 0.005 （0.05） 0.002-0.25 （0.02-2.5） 3.5 （35）

Z005DD 0.005-2 （0.05-20） 0.01 （0.1） 0.005-0.5 （0.05-5） 3.5 （35）
Z012DD 0.005-2 （0.05-20） 0.05 （0.5） 0.005-1.2 （0.05-12） 3.5 （35）
Z020DD 0.005-2 （0.05-20） 0.07 （0.7） 0.005-2 （0.05-20） 3.5 （35）
SPDT
Z2.5DDEX 0.002-21 （0.02-210） 0.005 （0.05） 0.002-0.25 （0.02-2.5） 35 （350）
Z005DDEX 0.005-21 （0.05-210） 0.01 （0.1） 0.005-0.5 （0.05-5） 35 （350）
Z012DDEX 0.005-21 （0.05-210） 0.05 （0.5） 0.005-1.2 （0.05-12） 35 （350）
Z035DDEX 0.005-21 （0.05-210） 0.07 （0.7） 0.005-3.5 （0.05-35） 35 （350）
Z2.5DDW 0.002-2 （0.02-20） 0.0075 （0.075） 0.002-0.25 （0.02-2.5） 3.5 （35）
Z005DDW 0.005-2 （0.05-20） 0.015 （0.15） 0.005-0.5 （0.05-5） 3.5 （35）
Z012DDW 0.005-2 （0.05-20） 0.08 （0.8） 0.005-1.2 （0.05-12） 3.5 （35）
Z020DDW 0.005-2 （0.05-20） 0.1 （1） 0.005-2 （0.05-20） 3.5 （35）
DPDT
Z2.5DDWEX 0.002-21 （0.02-210） 0.0075 （0.075） 0.002-0.25 （0.02-2.5） 35 （350）
Z005DDWEX 0.005-21 （0.05-210） 0.015 （0.15） 0.005-0.5 （0.05-5） 35 （350）
Z012DDWEX 0.005-21 （0.05-210） 0.08 （0.8） 0.005-1.2 （0.05-12） 35 （350）
Z035DDWEX 0.005-21 （0.05-210） 0.1 （1） 0.005-3.5 （0.05-35） 35 （350）
● The sensitivity (dead band) is not adjustable.
● The sensitivity (dead band) indicates value at the middle of the range of adjustable difference. The sensitivity (dead band) becomes smaller
than the indicated value within the lower range of adjustable difference, and larger within the higher range of adjustable difference.
● Only“C”contact micro switch is available.

26
 New
Differential Pressure Switches Z
Z2.5DD Mass：approx. 0.9kg
Z005DD
※ Please note : Total length of DPDT is
Z012DD longer than SPDT.
Z020DD



  

 





 










+(;

a side view of DPDT +(; +(;

（ Unit：millimeter ）

Z2.5DDEX Mass：approx. 1.3kg

Z005DDEX
Z012DDEX ※ Please note : Total length of DPDT is
Z035DDEX longer than SPDT.



  





0RXQWLQJ
%UDFNHW


0RXQWLQJ  
%UDFNHW
 












+(;

ȭ
+(;
a side view
ȭ of DPDT
（ Unit：millimeter ）

27
New
Z Differential Pressure Switches

Differential Pressure Switches

(Diaphragm Actuator)
Z1/4DD／Z1/4DDW

Features
　● T his differential pressure switch especially
specializes in extremely small differential
pressure.
　● The differential pressure switch adapts to the
differential range of 0.0005 to 0.025MPa.
　● A polymide diaphragm is adopted as a pressure
sensing element.
　● T o realize the high proof pressure and the
extremely small dead band at the same time,
stroke and clearance have been made smaller.
(It is recommended to use an approx. 20μm
filter for the both higher pressure side and
lower side pressure side.)
　● The diaphragm actuated pressure switches can
be used for various pressure medium such as
air, water, oil, gases and steam.
　● CCC approved.

Type of the Models Range Sensitivity Range of Adjustable Proof Pressure

Micro Switches MPa（kgf/cm2） (Dead Band) Difference MPa（kgf/cm2）
The switch is activated on The switch is reset on decreasing
increasing pressure pressure difference.
difference. MPa（kgf/cm2）
MPa（kgf/cm2）
MIN. - MAX. MIN. - MAX.

SPDT Z1/4DD 0.0005-6.6 （0.005-66） 0.0005 （0.005） 0.0005-0.025 （0.005-0.25） 10 （100）

DPDT Z1/4DDW 0.0005-6.6 （0.005-66） 0.00075（0.0075） 0.0005-0.025 （0.005-0.25） 10 （100）

● The sensitivity (dead band) is not adjustable.

● The sensitivity (dead band) indicates value at the middle of the range of adjustable difference. The sensitivity (dead band) becomes smaller
than the indicated value within the lower range of adjustable difference, and larger within the higher range of adjustable difference.
● Only“C”contact micro switch is available.

28
 New
Differential Pressure Switches Z
Z1/4DD Mass：approx. 4.7kg

（ Unit：millimeter ）

Z1/4DDW Mass：approx. 4.8kg

㻢㻞 㻢㻢
㻳㻝㻛㻞㻌㻌㻌㻌㻌
㻔㻼㻲㻝㻛㻞㻕 㻢㻡㻚㻡
㻝㻝㻜

㻝㻠㻣
㻞㻜㻜㻚㻡

㻞㻝㻠

㻡㻜
㻢
㻡㻜

㻟㻣㻚㻡

㻣㻥

㻡㻜
㻝㻟㻚㻡

㻡㻜
㻌 㻝㻜㻜
㻞䠉䃥㻝㻜㻹㼀㻳

㻣㻜 㻝㻡
㻝㻞

㻾㼏㻝㻛㻠㻔㻼㼀㻝㻛㻠㻕㻌
㻝㻜㻜 㻼㻾㻱㻿㻿㼁㻾㻱㻌㻼㻻㻾㼀㻌㻸㻻㼃
㻾㼏㻝㻛㻠㻔㻼㼀㻝㻛㻠㻕㻌
㻼㻾㻱㻿㻿㼁㻾㻱㻌㻼㻻㻾㼀㻌㻴㻵㻳㻴㻌 （ Unit：millimeter ）

29
New
Z Differential Pressure Switches

Differential Pressure Switches

(Diaphragm Actuator)
Z1/30DD

Features
　● The differential pressure switch enables you to set
its operating point at extremely small differential
pressure under high normal operation pressure.
　● The differential pressure switch can be used up to its
proof pressure of 69kPa. The adjustable differential
pressure range is 0 to 3kPa.
　● A nitrile rubber diaphragm is adopted as a pressure
sensing element.
　● To realize the high proof pressure and the small dead
band at the same time, the stroke and the clearance
have been made smaller. (It is recommended to use
an approx. 20μm filter for the both higher pressure
side and lower pressure side.)
　● The diaphragm actuated pressure switches can be
used for various pressure medium such as air, water,
oil, gases and steam.
　● CCC approved.

Type of the Models Range Sensitivity Range of Adjustable Proof Pressure

Micro Switches kPa（kgf/cm2） (Dead Band) Difference kPa（kgf/cm2）
The switch is activated The switch is reset on decreasing
on increasing pressure pressure difference.
difference. kPa（kgf/cm2）
kPa（kgf/cm2）
MIN. - MAX. MIN. - MAX.

SPDT Z1/30DD 0-46 （0-0.46） 0.07 （0.0007） 0-3 （0-0.03） 69 （0.69）

● The sensitivity (dead band) is not adjustable.

● The sensitivity (dead band) indicates value at the middle of the range of adjustable difference. The sensitivity (dead band) becomes smaller
than the indicated value within the lower range of adjustable difference, and larger within the higher range of adjustable difference.
● Use flexible tubing so that any external force or stress is not applied to the diaphragm flange.
● Only“C”contact micro switch is available.

30
 New
Differential Pressure Switches Z
Z1/30DD Mass：approx. 2.7kg

（ Unit：millimeter ）

31
 Explosion-proof Pressure Switches

TEX-Z Series

The explosion-proof pressure switches

have adopted a pressure-proof type

cable gland at the conduit connection

port. This particular configuration makes

the explosion-proof pressure switches

conforming to the IEC standard.

32
 TEX
Explosion-proof Pressure Switches Z

■ Explosion-proof Class: ExdIICT6

The explosion-proof pressure switches conform to the IEC standard.

The explosion-proof class is ExdIICT6.

●A reference chart of gases (ambient atmosphere) in which the TEX-Z type can
be used.
　Since the explosion-proof configuration of the TEX-Z conforms to ExdIICT6 standard, the
switches can be used in hazardous locations where explosive gases (flammable gases and
vapor of flammable liquid) exist.

［Example of classification of explosive gases being compatible with a group of explosion-proof

electric devices and the temperature grade］

Temperature Grade
T1 T2 T3 T4 T5 T6

Acetone Ethanol Ethyl Cyclohexane Acetaldehyde Ethyl Nitrite

Ammonia Ethyl Benzene Ethyl Cyclopentane 　
Carbon Monoxide Acetyl Chloride Butyl Chloride 　
Ethane Vinyl Chloride Octane 　
Ethyl Methyl Ketone Vinyl Acetate Cyclohexanol 　
O-xylene Butyl Acetate Cyclohexane 　
Chlorobenzene Propyl Acetate Decane 　
IIA Acetic Acid Cyclopentane Hexane 　
Ethyl Acetate Dimethylamine Heptane 　
ＧＲＯＵＰ

Styrene 1-butanol Pentane 　

Toluene Butane Methylcyclohexane 　
Propane Propylamine Gasoline 　
Benzene Propylene Kerosene 　
Methanol Ethyl Methacrylate Petroleum Naphtha 　
Methane Methyl Methacrylate Oil of Turpentine 　

Acrylic Nitrile Ethyl Acrylate Acrylic Aldehyde Ethyl Methyl Ether

Hydrogen Cyanide Methyl Acrylate Crotonaldehyde Diethyl Ether
Cyclopropane Ethylene Dimethyl Ether Dibutyl Ether
IIB
Coke Oven Gas Ethylene Oxide Tetrahydrofurane Nitric Acid Isopropyl
　 1,3-butadiene Tetraphloroethylene
　 Furane

IIC Hydrogen Acethylene Carbon Disulfide Ethyl Nitrate

33
TEX
Z Explosion-proof Pressure Switches

Structural Drawing of the TEX-Z

Baffle O-ring Earth Terminal

Terminal Cover
Micro Switch

Explosion-proof Area

Gland and Operating Rod

Earth Terminal

Differential Adjusting Nut

Cable Gland

Non-explosion-proof Area

Differential Module

Range Module

Range Adjusting Nut

Cover

Pressure Sensing Part

How to set

Pressure setting can be done easily.

When you set the operating pressure on falling pressure, put a flat blade screw driver
longitudinally in the slit of the range adjusting nut, then rotate the nut with it. When viewing
from the front, rotating the nut clockwise will make the set pressure high. Dead band
(difference between ON and OFF) can be adjusted by rotating the differential adjusting nut.
This means setting the operating pressure on rising. When viewing from the front, rotating
the nut clockwise will make the differential large.

Note) Differential of the fixed differential type can not be adjusted.

34
 TEX
Explosion-proof Pressure Switches Z
Specifications

Housing Material：Die-cast Aluminum Material of the Pressure ：TEX1-Z005D、010D、018D

Painting Color：7.5BG4/1.5 Sensing Element 　 Diaphragm �������Nitrile Rubber (Buna N)
Explosion-proof class：Exd II CT6 　 Flange �����������Die-cast Aluminum
Pressure Port：Rc1/4 (PT1/4) 　 O-ring ���������Nitrile Rubber (Buna N)
Conduit：G3/4 (PF3/4) ：TEX1-Z1/4D
Operating Ambient Temperature：−10〜＋40℃ 　 Diaphragm �������Nitrile Rubber (Buna N)
Allowable Operating Frequency：120 cycles / minute 　 Housing ��������� Brass (nickel plated)
Insulation Resistance：Between discontinuous terminals, and between 　 O-ring ���������Nitrile Rubber (Buna N)
each terminal and non-charging metal; Over ：TEX1-Z032P
100MΩ (at DC500V) 　 Cylinder ��������� Brass (nickel plated)
Withstand Voltage：Between discontinuous terminals; 1000VAC, 50/60Hz, 1 minute 　 Piston ���������������� Brass
Between each terminal and non-charging metal, and ground; 　 O-ring ���������Nitrile Rubber (Buna N)
2200VAC 50/60Hz, 1minute ：TEX1-Z070P, 210P, 400P
Micro Switch Terminal Screw：M4 　 Cylinder ��������� Brass (nickel plated)
Earth Terminal Screw：M4 　 Piston �������������� SUS420F
Orifice of the Pressure Sensing Part：Diaphragm Actuator (Standard Pressure Switch)…… φ1.5 　 Bushing ��������������� Brass
　Diaphragm Actuator (Micro Differential Pressure Switch)…… Nil 　 O-ring ���������Nitrile Rubber (Buna N)
　Piston Actuator…………………………………………… φ0.8 　 Cup Seal �������������� Teflon＊
　Bellows Actuator………………………………………… φ1.5 ：TEX1-Z635P
Allowable Medium Temperature：SUS316……………………………… −20 to ＋200℃ 　 Cylinder �������������� SUS303
　Polyimide…………………………… −20 to ＋200℃ 　 Piston �������������� SUS420F
　Piston Actuator……………………… −10 to ＋80℃ 　 Bushing ��������������� Brass
　Diaphragm Actuator………………… −10 to ＋80℃ 　 O-ring ���������Nitrile Rubber (Buna N)
　Phosphor Bronze Bellows………… −40 to ＋120℃ 　 Cup Seal �������������� Teflon＊
　Stainless Steel Bellows……………… −40 to ＋250℃ ：TEX1-Z002BS, 006BS, 010BS, 025BS, 050BS, 115BS
　(Provided the temperature shall be within the range 　 Bellows���������������SUS316L
that will not effect on the switch mechanism.) 　 Housing �������������� SUS316
Repeatability：Standard Pressure Switch … ±1％ of Max range ：TEX1-Z001BR, 005BR, 009BR
Differential Pressure Switch … ±1％ of Max differential 　 Bellows����������� Phosphor Bronze
　 Housing ��������� Steel (nickel plated)
：TEX-Z1.7DH, 005DH, 025DH, 035DH, 070DH, 120DH, 280DH
　 Diaphragm �������������SUS316L
　 Flange ��������������� SUS316
　 Pressure Plate  ����������� SUS316
　 Pressure Port ������������ SUS316
　 O-ring ���������������� Viton＊
：TEX-Z1/4DD, 2.5DD, 005DD, 012DD, 020DD, □□□DDEX
　 Diaphragm ������������ Polyimide
　 Flange ��������������� SUS316
　 Pressure Plate������������ SUS316
　 Pressure Port ������������ SUS316
　 O-ring ���������������� Viton＊

＊Teflon and Viton are the registered trademarks of Du Pont.

How to order

D Diaphragm

Type of Actuators P Piston

Collective B Bellows
Designation
BS Stainless Steel Bellows
of the Series
Explosion-proof Range Adjustable Differential Type
F Fixed Differential Type

T E X Z Special Specifications
Standard Type

1 SPDT Standard R Compound Vacuum Pressure Type

Extremely Small Differential Type,
0 SPDT Micro-load Type H
High Proof Pressure Type
Micro Switch C SPDT Sealed Type D Differential Pressure Switch
SPDT (C contact)

35
TEX
Z Explosion-proof Pressure Switches

Explosion-proof Pressure Switches

(Diaphragm Actuator)
TEX□-Z □□□ D

Features
　● T he explosion-proof pressure switches have
adopted a nitrile rubber diaphragm as the
pressure sensing element.
　● The pressure switches can be used for various
pressure medium such as air, water, oil, gases
and steam.
　● The pressure switches are applicable to pressure
ranging from 0.005 to 1.8MPa.
　● T he micro switch is selectable from a SPDT
standard rating type, a micro-load type (for
24V D C ) , a n d a s e a l e d t y p e ( e n v i r o n m e n t
resistance).
　● ExdIICT6 (explosion-proof class) approved.

Models Range Differential (Dead Band) Rated Proof

M I N.：Minimum setting point of Add to the Range Value Pressure Pressure
falling pressure. MPa（kgf/cm2） Maximum Pressure MPa（kgf/cm2）
MAX.：Maximum setting point of in Continuous Use
rising pressure.
MPa（kgf/cm2）
MPa（kgf/cm2）
Lower Range Middle Range Higher Range
MIN. - MAX. MIN. - MAX. MIN. - MAX. MIN. - MAX.

TEX1-Z005D 0.005-0.5 （0.05-5） 0.03-0.1 （0.3-1） 0.03-0.11 （0.3-1.1） 0.04-0.12 （0.4-1.2） 0.5 （5） 1.8（18）
TEX1-Z010D 0.005-1 （0.05-10） 0.04-0.2 （0.4-2） 0.05-0.21 （0.5-2.1） 0.1-0.22 （1-2.2） 1 （10） 3 （30）
TEX1-Z018D 0.02-1.8 （0.2-18） 0.09-0.39 （0.9-3.9） 0.12-0.4 （1.2-4） 0.2-0.42 （2-4.2） 1.8 （18） 4 （40）

● Beside the adjustable differential (dead band) type, the fixed differential type (symbol“F”) is available.
●T
 he differential (dead band) becomes larger to a certain extent in accordance with increase of the pressure. The above chart shows the
differential adjustable range related to the pressure ranges divided into three stages.
●T he minimum (MIN.) differential (dead band) indicates values at the middle of the pressure range. The differential (dead band) becomes smaller

than the indicated values within the lower range, and larger range within the higher range.
●T he differential (dead band) of the fixed differential type is less than or equal to the minimum value of the adjustable differential (dead band) type.
● Select a type of your pressure switch so that it can be used within the middle of the range as much as possible.

36
 TEX
Explosion-proof Pressure Switches Z

TEX1-Z005D Mass：approx. 1.9kg

TEX1-Z010D
TEX1-Z018D

（ Unit：millimeter ）

37
TEX
Z Explosion-proof Pressure Switches

Explosion-proof Pressure Switches

(Diaphragm Actuator)
TEX □ -Z1/4D

Features
　●T he explosion-proof pressure switch can be
used within very low pressure range of 3 to
25kPa.
　●T he pressure switches have adopted a nitrile
rubber diaphragm as the pressure sensing
element.
　●T he pressure switch can be used for various
pressure medium such as air, water, oil, gases
and steam.
　●T he micro switch is selectable from a SPDT
standard rating type, a micro-load type (for
24V D C ) , a n d a s e a l e d t y p e ( e n v i r o n m e n t
resistance).
　●ExdIICT6 (explosion-proof class) approved.

Model Range Differential (Dead Band) Rated Pressure Proof Pressure

M I N.：Minimum setting point of Add to the Range Value Maximum Pressure in kPa（kgf/cm2）
falling pressure. kPa（kgf/cm2） Continuous Use
MAX.：Maximum setting point of kPa（kgf/cm2）
rising pressure.
kPa（kgf/cm2）
MIN. - MAX. MIN. - MAX.

TEX1-Z1/4D 3-25 （0.03-0.25） 2.5-8 （0.025-0.08） 25 （0.25） 300 （3）

● Fixed differential (dead band) type (“F”) is available.

●T
 he minimum (MIN.) differential (dead band) indicates values at the middle of the pressure range. The differential (dead band)

becomes smaller than the indicated value within the lower range, and larger within the higher range.
●T
 he differential (dead band) of the fixed differential type (“F”) is less than or equal to the minimum value of the adjustable
differential (dead band) models.

38
 TEX
Explosion-proof Pressure Switches Z
TEX1-Z1/4D Mass：approx. 2.8kg

（ Unit：millimeter ）

39
TEX
Z Explosion-proof Pressure Switches

Explosion-proof Pressure Switches

(piston actuator)
TEX □ -Z □□□ P

Features
　● T he explosion-proof pressure switches have
adopted a brass (nickel plated) or SUS420F
piston as the pressure sensing element.
　● An O-ring and Teflon cup seal have been adopted
as a seal of the piston, and this configuration
realizes long-time duration of the pressure
switches.
　● T he pressure switches are applicable to
pressure ranging from 0.1 to 63.5MPa.
　● T he micro switch is selectable from a SPDT
standard rating type, a micro-load type (for
24V D C ) , a n d a s e a l e d t y p e ( e n v i r o n m e n t
resistance).
　● ExdIICT6 (explosion-proof class) approved.

Models Range Differential (Dead Band) Proof

M I N.：Minimum setting point of Add to the Range Value Pressure
falling pressure. MPa（kgf/cm2） MPa（kgf/cm2）
MAX.：Maximum setting point of
rising pressure.
MPa（kgf/cm2）
Lower Range Middle Range Higher Range
MIN. - MAX. MIN. - MAX. MIN. - MAX. MIN. - MAX.

TEX1-Z032P 0.1-3.2 （1-32） 0.2-0.6 （2-6） 0.2-0.6 （2-6） 0.25-0.7 （2.5-7） 10 （100）
TEX1-Z070P 0.2-7 （2-70） 0.25-1.3 （2.5-13） 0.28-1.4 （2.8-14） 0.3-1.5 （3-15） 35 （350）
TEX1-Z210P 0.5-20.5 （5-205） 0.6-3.8 （6-38） 0.7-4 （7-40） 1.2-4.2 （12-42） 70 （700）
TEX1-Z400P 1-40 （10-400） 1.4-7.8 （14-78） 1.5-8 （15-80） 1.8-8.5 （18-85） 70 （700）
TEX1-Z635P 2-63.5 （20-635） 2-11 （20-110） 2.5-12 （25-120） 3-12 （30-120） 120（1,200）

● Beside the adjustable differential (dead band) type, the fixed differential type (symbol“F”) is available.
● The differential (dead band) becomes larger to a certain extent in accordance with increase of the pressure. The above chart
shows the differential adjustable range related to the pressure ranges divided into three stages.
● The minimum (MIN.) differential (dead band) indicates values at the middle of the pressure range. The differential (dead band)

becomes smaller than the indicated values within the lower range, and larger range within the higher range.
● The differential (dead band) of the fixed differential type is less than or equal to the minimum value of the adjustable differential

(dead band) type.

● The differential (dead band) of the fixed differential type is less than or equal to the minimum value of the adjustable differential

(dead band) type.

● A PT1/8 drain port is equipped on the side of the body so that the pressure switch is used with piping for drains beforehand, in

an environment that will not allow even a small amount see page. The drain port must be opened to the atmospheric pressure.
● Select a type of your pressure switch so that it can be used within the middle of the range as much as possible.

40
 TEX
Explosion-proof Pressure Switches Z
TEX1-Z032P Mass：approx. 1.9kg
TEX1-Z070P
TEX1-Z210P
TEX1-Z400P
TEX1-Z635P

（ Unit：millimeter ）

41
TEX
Z Explosion-proof Pressure Switches

Explosion-proof Pressure Switches

(Bellows Actuator)
TEX□-Z □□□ BS

Features
　● T he explosion-proof pressure switches have
adopted a SUS316L bellows actuator as the
pressure sensing element.
　● The pressure switches can be used for various
pressure medium such as air, water, oil, gases
and steam.
　● The pressure switches are applicable to pressure
ranging from 0.005 to 11.5MPa.
　● T he micro switch is selectable from a SPDT
standard rating type, a micro-load type (for
24V D C ) , a n d a s e a l e d t y p e ( e n v i r o n m e n t
resistance).
　● ExdIICT6 (explosion-proof class) approved.

Models Range Differential Rated Pressure Proof Pressure

M I N.：Minimum setting point of Add to the Range Value Maximum Pressure in MPa (kgf/cm2)
falling pressure. MPa (kgf/cm2) Continuous Use
MAX.：Maximum setting point of MPa（kgf/cm2）
rising pressure.
MPa（kgf/cm2）
MIN. - MAX. MIN. - MAX.

TEX1-Z002BS 0.005-0.2 （0.05-2） 0.008-0.04 （0.08-0.4） 0.2 （2） 0.3 （3）

TEX1-Z006BS 0.005-0.6 （0.05-6） 0.03-0.1 （0.3-1） 0.6 （6） 0.9 （9）
TEX1-Z010BS 0.005-1 （0.05-10） 0.06-0.2 （0.6-2.1） 1 （10） 2 （20）
TEX1-Z025BS 0.03-2.5 （0.3-25） 0.17-0.5 （1.7-5） 2.5 （25） 4.2 （42）
TEX1-Z050BS 0.1-5 （1-50） 0.5-0.9 （5-9） 5 （50） 14 （140）
TEX1-Z115BS 0.2-11.5 （2-115） 1.2-1.8 （12-18） 11.5 （115） 17.5 （175）

● Beside the adjustable differential (dead band) type, the fixed differential type (symbol“F”) is available.
● The minimum (MIN.) differential (dead band) indicates values at the middle of the pressure range.
　 The differential (dead band) becomes smaller than the indicated value within the lower range, and larger range within the higher range.
● The differential (dead band) of the fixed differential type (“F” ) is less than or equal to the minimum value of the adjustable
differential (dead band) type.
● The bellows type pressure switches can be used for various pressure medium such as air, water, oil, gases and steam. However,

when you use a bellows type pressure switch for such application as water or oil, you should restrain possible pulsation or surge
pressure in your system at minimum.
　 It is recommended to use a damper for an application of which surge pressure is high.
● Normal operating pressure should be below the rated pressure.
● Life duration of bellows is largely influenced by amplitude of setting pressure and fluctuation range of pressure applied to the

bellows. It does not always correspond to number of times of a pressure switch actuation. Check high and low setting points, rated
pressure and proof pressure value of a pressure switch, so that you select an appropriate model that meets your application.
● The larger number of pressure cycles applied to a bellows is, shorter life duration of it.
　 Note that metal fatigue of a bellows accumulates according to pressure cycles even if they do not actuate a pressure switch.

42
 TEX
Explosion-proof Pressure Switches Z

TEX1-Z002BS
TEX1-Z006BS
TEX1-Z010BS

TYPE A Mass（kg）

TEX1-Z002BS 100 approx. 2.0

（ Unit：millimeter ） TEX1-Z006BS 74 approx. 1.9

TEX1-Z010BS 74 approx. 1.9

TEX1-Z025BS
TEX1-Z050BS
TEX1-Z115BS

TYPE A Mass（kg）

TEX1-Z025BS 85 approx. 2.0

TEX1-Z050BS 104 approx. 2.1

（ Unit：millimeter ） TEX1-Z115BS 93 approx. 2.1

43
TEX
Z Explosion-proof Pressure Switches

Explosion-proof Type Compound Vacuum

Pressure Switches (Bellows Actuator)
TEX□-Z □□□ BR

Features
　● T he explosion-proof type compound vacuum
pressure switches can be used within vacuum to
positive pressure range. They can be set within
vacuum pressure range only, from vacuum to
positive pressure range or within positive
pressure range only.
　● S etting at the atmospheric pressure (gauge
pressure = 0) can also be done.
　● The pressure switches have adopted a phosphor
bronze bellows actuator as the pressure
sensing element.
　● The pressure switches can be used for various
pressure medium such as air, water, oil, gases
and steam.
　● T he micro switch is selectable from a SPDT
standard rating type, a micro-load type (for
24V D C ) , a n d a s e a l e d t y p e ( e n v i r o n m e n t
resistance).
　● ExdIICT6 (explosion-proof class) approved.

Models Range Differential Rated Pressure Proof Pressure

M I N.：Minimum setting point of Add to the Range Value Maximum Pressure in kPa（kgf/cm2）
falling pressure. kPa（kgf/cm2） Continuous Use
MAX.：Maximum setting point of
rising pressure.

MIN. - MAX. MIN. - MAX.

80kPaVac-100kPa 100kPaVac-100kPa
TEX1-Z001BR 10-40 （0.1-0.4） 300 （3）
（600mmHgV-1kgf/cm2） （760mmHgV-1kgf/cm2）
73kPaVac-500kPa 100kPaVac-500kPa
TEX1-Z005BR 20-100 （0.2-1） 900 （9）
（550mmHgV-5kgf/cm2） （760mmHgV-5kgf/cm2）
67kPaVac-900kPa 100kPaVac-900kPa
TEX1-Z009BR 40-200 （0.4-2） 2000 （20）
（500mmHgV-9kgf/cm2） （760mmHgV-9kgf/cm2）

● Beside the adjustable differential (dead band) type, the fixed differential type (symbol“F”) is available.
● The minimum (MIN.) differential (dead band) indicates values at the middle of the pressure range. The differential (dead
band) becomes smaller than the indicated value within the lower range, and larger range within the higher range.
● The differential (dead band) of the fixed differential type (“F”) is less than or equal to the minimum value of the adjustable

differential (dead band) type.

● The bellows type pressure switches can be used for various pressure medium such as air, water, oil, gases and steam.

However, when you use a bellows type pressure switch for such application as water or oil, you should restrain possible
pulsation or surge pressure in your system at minimum.
　 It is recommended to use a damper for an application of which surge pressure is high.
● Normal operating pressure should be below the rated pressure.
● Life duration of bellows is largely influenced by amplitude of setting pressure and fluctuation range of pressure applied to the

bellows. It does not always correspond to number of times of a pressure switch actuation. Check high and low setting points, rated
pressure and proof pressure value of a pressure switch, so that you select an appropriate model that meets your application.
● The larger number of pressure cycles applied to a bellows is, shorter life duration of it.
　 Note that metal fatigue of a bellows accumulates according to pressure cycles even if they do not actuate a pressure switch.

44
 TEX
Explosion-proof Pressure Switches Z
TEX1-Z001BR Mass：approx. 2.3kg

（ Unit：millimeter ）

TEX1-Z005BR Mass：approx. 2.1kg

TEX1-Z009BR

（ Unit：millimeter ）

45
TEX
Z Explosion-proof Pressure Switches

Explosion-proof Pressure Switches

(Diaphragm Actuator)
TEX-Z □□□ DH

Features
　● The explosion-proof pressure switches adapt to
small differential.
　● The switches adapt up to the maximum range
of 28MPa. The adjustable differential range is
0.004 to 1MPa.
　● A SU S316L dia phr a g m is a do pte d a s t h e
pressure sensing element.
　● The pressure switches can be used for various
pressure medium such as air, water, oil, gases
and steam.
　● ExdIICT6 (explosion-proof class) approved.

Model Range Differential Rated Pressure Proof Pressure

M I N.：Minimum setting point of Add to the Range Value Maximum Pressure MPa（kgf/cm2）
falling pressure. MPa（kgf/cm2） in Continuous Use
MAX.：Maximum setting point of MPa（kgf/cm2）
rising pressure.
MPa（kgf/cm2）
MIN. - MAX.

TEX-Z1.7DH 0.002-0.17 （0.02-1.7） 0.004 （0.04） 2.3（23） 3.5（35）

TEX-Z005DH 0.005-0.5 （0.05-5） 0.006 （0.06） 2.3（23） 3.5（35）
TEX-Z025DH 0.02-2.5 （0.2-25） 0.03 （0.3） 7 （70） 12 （120）
TEX-Z035DH 0.05-3.5 （0.5-35） 0.06 （0.6） 10 （100） 41 （410）
TEX-Z070DH 0.1-7 （1-70） 0.15 （1.5） 12 （120） 41 （410）
TEX-Z120DH 0.2-12 （2-120） 0.3 （3） 15 （150） 41 （410）
TEX-Z280DH 0.2-28 （2-280） 1 （10） 35 （350） 42 （420）

● The differential (dead band ) is not adjustable.

● Thedifferential (dead band) indicates value at the middle of the pressure range. The differential (dead band) becomes
smaller than the indicated value within the lower range, and larger within the higher range.
● Only“C ”contact micro switch is available.

46
 TEX
Explosion-proof Pressure Switches Z

TEX-Z1.7DH Mass：approx. 2.1kg

TEX-Z005DH
TEX-Z025DH

（ Unit：millimeter ）

TEX-Z035DH Mass：approx. 1.9kg

TEX-Z070DH
TEX-Z120DH
TEX-Z280DH

（ Unit：millimeter ）

47
TEX
Z Explosion-proof Pressure Switches

Explosion-proof Differential
Pressure Switches (Diaphragm Actuator)
TEX-Z □□□ DD／TEX-Z □□□ DDEX

Features
　● T his explosion-proof differential pressure
switch especially specializes in extremely small
differential pressure.
　● The differential pressure switches conform to the
differential setting range of 0.0005 to 3.5MPa.
　● The switches adapt up to the maximum range
of 21MPa.
　● A polymide diaphragm is adopted as a pressure
sensing element.
　● T o realize the high proof pressure and the
extremely small dead band at the same time,
the stroke and clearance have been made
smaller. (It is recommended to use an approx.
20μm filter for the both higher pressure side
and lower side pressure side.)
　● The differential pressure switches can be used
for various pressure medium such as air, water,
oil, gases and steam.
　● ExdIICT6 (explosion-proof class) approved.

Model Range Sensitivity Range of Adjustable Difference Proof Pressure

MPa（kgf/cm2） (Dead Band) The switch is reset on decreasing MPa（kgf/cm2）
The switch is activated on pressure difference.
increasing pressure difference. MPa（kgf/cm2）
MPa（kgf/cm2）
MIN. - MAX. MIN. - MAX.

TEX-Z1/4DD 0.0005-6.6 （0.005-66） 0.0006 （0.006） 0.0005-0.025 （0.005-0.25） 10 （100）

TEX-Z2.5DD 0.002-2 （0.02-20） 0.006 （0.06） 0.002-0.25 （0.02-2.5） 3.5 （35）
TEX-Z005DD 0.005-2 （0.05-20） 0.02 （0.2） 0.005-0.5 （0.05-5） 3.5 （35）
TEX-Z012DD 0.005-2 （0.05-20） 0.06 （0.6） 0.005-1.2 （0.05-12） 3.5 （35）
TEX-Z020DD 0.005-2 （0.05-20） 0.1 （1） 0.005-2 （0.05-20） 3.5 （35）
TEX-Z2.5DDEX 0.002-21 （0.02-210） 0.006 （0.06） 0.002-0.25 （0.02-2.5） 35 （350）
TEX-Z005DDEX 0.005-21 （0.05-210） 0.02 （0.2） 0.005-0.5 （0.05-5） 35 （350）
TEX-Z012DDEX 0.005-21 （0.05-210） 0.06 （0.6） 0.005-1.2 （0.05-12） 35 （350）
TEX-Z035DDEX 0.005-21 （0.05-210） 0.1 （1） 0.005-3.5 （0.05-35） 35 （350）

● The sensitivity (dead band) is not adjustable.

● The sensitivity (dead band) indicates value at the middle of the range of adjusting difference. The sensitivity (dead band)
becomes smaller than the indicated value within the lower range of adjusting difference, and larger within the higher range of
adjusting difference.
● Only“C”contact micro switch is available.

48
 TEX
Explosion-proof Pressure Switches Z
TEX-Z1/4DD Mass：approx. 6.0kg

（ Unit：millimeter ）

TEX-Z2.5DD Mass：approx. 2.1kg

TEX-Z005DD
TEX-Z012DD
TEX-Z020DD

（ Unit：millimeter ）

49
TEX
Z Explosion-proof Pressure Switches

TEX-Z2.5DDEX Mass：approx. 2.5kg

TEX-Z005DDEX
TEX-Z012DDEX
TEX-Z035DDEX

（ Unit：millimeter ）

50
 TEX
Explosion-proof Pressure Switches Z
Furnished Accessories

■ Pressure-proof packing type cable gland (UF322）

Pressure-proof packing
Applicable cable size
(nominal) Part Number

10〜13　　 　　　　　　　　　322-13

13〜15　　　 　　　　　　　　322-15

The above two kinds of packing are furnished.

■ Hex wrench for the cable gland

■ Tool for opening and closing the terminal cover

Pressure-proof packing type cable gland (UF322)

The TEX-Z series pressure switches become to be explosion-proof configuration

by using the pressure-proof packing type cable gland at their conduit opening.

● I t is mandatory to use the pressure-proof packing type cable gland, and to

install the pressure switch in the correct manner.
●U
 se the furnished cable gland for the pressure-proof packing cable gland.
●R
 efer to the instruction manual for the correct installation of the pressure-
proof packing cable gland.

Cable
Body
Lock Nut
Metal Washer
Packing
O-ring
Metal Washer
Gland Baffle Screw
Gland

Cable Clamp Screw

Cover
Union

PF3/4
Conduit

51
Pressure Switches

Electrical Rating of Micro Switches

■SPDT Standard Type

Contact Structure Voltage Resistance Load (A) Lamp Load (A) Inductive Load (A) Motor Load (A)
SPDT (V) N.C. N.O. N.C. N.O. N.C. N.O. N.C. N.O.
AC 125 10 10 3 1.5 10 5 2.5
250 10 10 2 1 10 3 1.5
2 1 480 10 10 1.5 0.8 3 1.5 0.8
N.C.
600* 3 1 1 0.5 1.5 1 0.5
N.C.
DC 8 10 6 3 10 6
N.O. 14 10 6 3 10 6
N.O.
3 30 6 4 3 6 4
4
125 0.8 0.2 0.2 0.8 0.2
250 0.4 0.1 0.1 0.4 0.1
＊A CE approved switch is rated up to 480VAC. Voltage rating 600VAC is not CE approved.

■SPDT Micro Load Type

Contact Structure
Rating Recommended Range of Load
SPDT
2 1
N.C. 125V AC0.1A DC5-30V
N.C.
N.O.
N.O. 30V DC0.1A 0.5-100mA
3 4

■SPDT (C contact): Standard Type

Contact Structure Voltage Resistance Load (A) Lamp Load (A) Inductive Load (A) Motor Load (A)
SPDT (V) N.C. N.O. N.C. N.O. N.C. N.O. N.C. N.O.
AC 125 10 3 1.5 10 5 2.5
250 10 2.5 1.25 10 3 1.5
DC 8 15 3 1.5 15 5 2.5
N.O.
COM 14 15 3 1.5 10 5 2.5
N.C.
30 2 2 1.4 1 1 1
125 0.4 0.4 0.4 0.03 0.03 0.03
250 0.2 0.2 0.2 0.02 0.02 0.02

■SPDT (C contact): Explosion-proof type

Contact Structure Voltage Resistance Load (A) Lamp Load (A) Inductive Load (A) Motor Load (A)
SPDT (V) N.C. N.O. N.C. N.O. N.C. N.O. N.C. N.O.
AC 125 10 3 1.5 10 5 2.5
250 10 2 1 10 3 1.5
DC 8 10 3 1.5 10 5 2.5
N.O.
COM 14 10 3 1.5 10 5 2.5
N.C.
30 2 2 1.4 1 1 1
125 0.4 0.2 0.2 0.03 0.03 0.03
250 0.2 0.1 0.1 0.02 0.02 0.02

■DPDT (C contact)
Contact Structure Voltage Resistance Load (A) Lamp Load (A) Inductive Load (A) Motor Load (A)
DPDT (V) N.C. N.O. N.C. N.O. N.C. N.O. N.C. N.O.
AC 125 10 3 1.5 10 5 2.5
N.O. 250 10 2.5 1.25 10 3 1.5
COM
N.C. DC 8 15 3 1.5 15 5 2.5
14 15 3 1.5 10 5 2.5
N.O. 30 2 2 1.4 1 1 1
COM
N.C. 125 0.4 0.4 0.4 0.03 0.03 0.03
250 0.2 0.2 0.2 0.02 0.02 0.02

① The above tables show steady-state current.

② Inductive Load : Alternating current-phase factor is 0.4 or more, direct current-time constant is below 7 ms.
③ Lamp Load : Having decuple inrush current.
④ Motor Load : Having sextuple inrush current.

52
 Pressure Switches

Pilot Lamp Window

Cover with Pilot Lamp Rubber Lamp Holder
LED (Light Emitting Diode)

To the Micro Switch

Rectifier Stack

10
Rubber Holder

Lamp Assembly （L24）

Put the holder on the built-in micro switch after wiring, and then close the cover.
When ordering a pressure switch with a pilot lamp, suffix a concerned symbol.
(Ex. TDZ-4L)

Operation Indicating Pilot Lamp

Pressure Cycle
Lighting range on rising pressure

（
Operating point on rising pressure
）
“a”contact ON,
“b”contact OFF

（
Reset point on falling pressure
）
“a”contact OFF,
“b”contact ON

Lighting range on falling pressure

Symbol L Voltage：100/200V AC,DC

Carry current：Approx. 0.5 mA at 100V
２ 1 ２ 1
Load
負荷

　　　　　Approx. 1.6 mA at 200V ① Load

負荷 ②
３ ４ ３ ４
Lamp：Neon lamp Lighting on
圧力上昇時点灯
Lighting on rising pressure
Built-in Resistor 圧力下降時点灯
falling pressure

―― Lighting when a load is OFF ――

２ 1
Load
負荷
２ 1

３ ４
③ Load
負荷 ④ Lighting on
３ ４ 圧力下降時点灯
falling pressure
Lighting on
圧力上昇時点灯
rising pressure

―― Lighting when a load is ON ――

Symbol L24 Voltage：24V DC

Carry current：① ② Approx. 1.8 mA
２ 1 ２ 1
Load
負荷
① ②
　　　　　③ ④ Approx. 2.3 mA Load
負荷
３ ４ ３ ４ Lighting on
Lamp：LED (Light Emitting Diode) 圧力上昇時点灯
rising pressure
Built-in Stack and Resistor Lighting on
圧力下降時点灯
Red emission falling pressure

―― Lighting when a load is OFF ――

２ 1
２ 1
Load
負荷

③ ④
Load
負荷 ３ ４
３ ４
Lighting on
圧力下降時点灯
Lighting on falling pressure
圧力上昇時点灯
rising pressure

―― Lighting when a load is ON ――

Symbol LF Voltage：Free voltage (DC30V Max)

Lamp：LED (Light Emitting Diode) ２ 1
External
外部抵抗 Resistor ２ 1
Load
負荷
Built-in Stack ① ②
Red emission Load
負荷
３ ４ ３ ４ 外部抵抗
External Resistor
Mounting an external resistor：
When an external resistor is mounted, Lighting
圧力上昇時点灯 on Lighting on
圧力下降時点灯
calculate the carry current through the LED rising pressure falling pressure
from each voltage so that it shall be within
―― Lighting when a load is ON ――
range of 10 to 15 mA.

53
MEMO
MEMO
MEMO
TOKYO PLANT
U R L http:/ /www.t aiheiboeki.co.jp

Distributed by ;

Nihonbashi Honcho Building

2-2, Nihonbashi Honcho 2-chome, Chuo-ku, Tokyo 103-0023 Japan.
Telephone. 81- (0) 3-3270-4821 Telefax. 81- (0) 3-3245-1767
Branches : Nagoya/Osaka/Fukuyama/Kyushu/Los Angeles

Manufactured by ;

Printed in Japan