Baumer

BA
Differential Pressure Gauge
Single diaphragm type

Special Features
& Atex approved electrical contacts
Case & measuring system in SS
Dry or liquid filled
Standard followed in general EN 837 - 3

Application
Suitable for clean air
Compatible gases
Fertilizer
Petrochemicals
Pharmaceutical
Power
Cement
Sugar
Food & beverages
Pulp
Paper
Allied process industries
GOST - R- R
GOST

GOST

Specifications
Standard Version : 100 mm & 150 mm
Accuracy : ±2.5% of F. S. (For ascending order)
Ambient temperature : - 25°C to + 65°C
Process temperature : Max. 100°C
Static pressure : 10 kg/cm2 up to ranges 600 mmWC
: 40 kg/cm2 for ranges 1000 mmWC to 2500 mmWC
: 60 kg/cm2 for ranges 4000 mmWC & above
Over pressure limit : 130% of Max. Scale Value
 Static Pressure up to 100 kg/cm2 on request.
Case & bezel : AISI 304 SS (Bayonet Type)
Diaphragm : Spring Steel with PTFE protection (AISI 316L SS on request)
Nuts & bolts : AlSI 304 SS
Process connection : 1/4” NPT (F) x 2 Nos.
Seal chamber : AISI 304 SS
Movement : AISI 304 SS

Protection : IP 65
Dial : Aluminum, black graduation on white background
Pointer : Aluminum, black coloured, Micrometer Zero Adjustable
Window : Shatter proof / Safety Glass
Case Gasket : Neoprene
Design and specifications subject to change without notice

Scale Amplitude : 180 to 270 (Depends on Range)

Glycerine filled version (option PY) Electrical contacts - dry version
Accuracy : ±4% of F. S. (For ascending order) Accuracy : ±3% of F. S. (For ascending order)
Ambient Temperature : Maximum 65°C Ambient Temperature : Maximum 65°C
Process Temperature : Maximum 65°C Process Temperature : Maximum 65o C
Window : Plexi Glass Window : Polycarbonate Dome
Dampening Liquids : Glycerin 99.7% Dampening Liquids : Dielectric Oil (Optional)
Other Features : Refer Specification Electrical Contacts* : Refer How to Order
of Standard Version Other Features : Refer Specification of Standard Version

* Please specify contact set points while ordering.

Temperature effect:
The variation of indication caused by effects of temperature is to be calculated by below formula; which is to be added in the specified accuracy
while measurement :- Formula : ± 0.08 x (t2 - t1) % of F. S. where t1 = reference temperature (+20°C) and t2 = ambient temperature in °C.
Note : The addition of mechanical electric contacts affects the accuracy of instruments such that 1% becomes 1.5%, 1.6% becomes 2.4% etc.
31- 08 -12

(Add the 50% of accuracy; If the contact is of the magnetically assisted type, this value can’t be added within the ±5% of setting point.)

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 Baumer BA
Differential Pressure Gauge
Single diaphragm type

Dimensions - standard version

TYPE 2 TYPE 6 B O
A
F B H
A

J ØD
ØC
H ØD
ØC

Q G
K F
Q G

LOW PRESSURE CHAMBER LOW PRESSURE CHAMBER

NS A Weight in gram NS A Weight in gram
B ØC ØD F H G Q (With Box) B ØC ØD F H G Q J K L (With Box)
100 12.5 47 100 111 150 150 24 54 8100.0 100 12.5 47 100 111 150 150 24 54 161 39 101 9000.0
150 15 49 149 161 150 150 24 54 8260.0 150 15 49 149 161 150 150 24 54 161 39 101 9250.0

TYPE 1 M
F B
A

L
H P ØD
ØC

LOW PRESSURE CHAMBER

NS A Weight in gram
B ØC ØD F H G Q P M L (With Box)
Q 100 12.5 47 100 111 150 150 24 54 90 15 150 8410.0
G 150 15 49 149 161 150 150 24 54 90 15 150 8560.0

TYPE 1
M
F B
A
Design and specifications subject to change without notice

H P ØD
ØC

HIGH PRESSURE CHAMBER

NS A Weight in gram
B ØC ØD F H G Q P M L (With Box)
Q G 100 12.5 47 100 111 150 150 25 54 90 15 150 4610.0
150 15 49 149 161 150 150 25 54 90 15 150 4760.0
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 Baumer BA
Differential Pressure Gauge
Single diaphragm type

Dimensions - standard version

TYPE 2 TYPE 6
F B B O
A A

J ØD
TYPE 2 ØC
H ØD
ØC

Q
G
K F

G
Q

HIGH PRESSURE CHAMBER HIGH PRESSURE CHAMBER

Weight in gram Weight in gram
NS A B ØC ØD F H G Q NS A B ØC ØD F H G Q J K L
(With Box) (With Box)
100 12.5 47 100 111 105 100 25 54 4250.0 100 12.5 47 100 111 150 150 24 54 161 39 101 5000.0
150 15 49 149 161 105 100 25 54 4400.0 150 15 49 149 161 150 150 24 54 161 39 101 5250.0

TYPE 12 DETAILS - CENTER DISTANCE

F B ØU
A

120°

H Q ØD
ØC

ØI
54
S G ØN

HIGH PRESSURE CHAMBER

Weight in gram
NS A B ØC ØD F H G Q
(With Box) Notes : • Drawings are not to scale.
100 12.5 47 100 111 105 100 25 54 4250.0 • All Dimensions are in mm.
150 15 49 149 161 105 100 25 54 4400.0 • NS = Nominal Size.

Range Table
Design and specifications subject to change without notice

Note : We offer Pressure, Vacuum and Compound ranges in Scales like kPa, MPa, bar, psi, kg/cm2 & Dual Scale like kPa with psi, kPa with
bar, bar with psi or scales as per the requirement can be provided on request. Following are the example tables for kg/cm2 & psi scales
Pressure range (Single Scale)
Low Pressure High Pressure
mmWC mmWC mmWC kg/cm² kg/cm² kg/cm²
0/250 0/1000 0/4000 0/1 0/2.5 0/10
0/400 0/1600 0/6000 0/1.6
0/600 0/2500 0/2
Note : Other Scale are available on customer request.
Accessories (refer datasheet for complete specifications)
* Manifolds
* Refer catalogue for Valves & Manifolds
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 Baumer BA
Differential Pressure Gauge
Single diaphragm type

Range Table

Wiring diagrams for electric contacts

Single Contact

1 NO 1 NC

3 1 3 2

Opening Closing

1 3 3 2

Double contact

1 NO + 1 NC 1 NC + 1 NC
1 1
3 3
2 2

Opening 1 Closing 1

Closing 2 Closing 2

1 3 2 3 2 1

1 NC + 1 NO 1 NO + 1 NO

2 1
3 3
1 2

Closing 2 Opening 1

Opening 1 Opening 2
1 3 2
1 2 3
Design and specifications subject to change without notice

Independent double contact

1 NC + 1 NC
1 NO+ 1 NC

3 2 3 2

4 1 4 1

Opening 1 Closing 1
Closing 2 Closing 2
1 432 3 4 2 1
- ++ - + + - -
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 Baumer BA
Differential Pressure Gauge
Single diaphragm type

How To Order Example

Basic Model BA
Code
Nominal Size F H
X
100 mm 150 mm
Type of Mounting
1 Wall / surface / projection mounting with bottom entry X
2 Direct bottom entry OR
XX
6 2" pipe / yoke mounting bottom entry (mounting bracket will be provided of steel epoxy painted.)
12 Center back entry with front flange (suitable for high pressure chamber only)
Gauge Connection (through adaptors)
4BM 1/4” NPT (M) x ½" BSP (M) X 2 Nos. 4NM 1/4” NPT (M) x ½” NPT (M) X 2 Nos. 2NF 1/4” NPT (F) (Standard)* XXX
* These female connections are directly provided on chamber.
Note : Connections like Metric/ PT/ PF/ Flaired/ UNF/ G/ R etc can be provided on request.
Diaphragm
CV Spring Steel with PTFE protection (Standard) UM MONEL UJ AISI 316L SS XX
Chamber
CY AISI 304 SS (Standard) RB AISI 316 SS RD MONEL XX
Range
Refer range table 0/2
kg/cm2
Options
PS AISI 316 SS case & bezel RZ Toughened glass
PW Five point calibration certificate RH Custom designed dial
XX
PY Dampening liquid glycerine filled RW Plexi glass
QA Dampening liquid silicon oil** SW Dial tag marking
GH Material test certificates# SX SS tag plate
SJ Maximum reading pointer with plexi glass (for dry version)* TF Conformity as per NACE standard
JU 2” pipe/yoke mounting bracket & ‘U’ clamp (AISI 304 SS) ZZ Dielectric oil filled**
FN 2” pipe/yoke mounting bracket & ‘U’ clamp (AISI 316 SS)
* For ranges 2.5 kg/cm² and above. ** Gasket & plug of Viton.
# Material test certificates will be provided for wetted parts only with chemical composition testing. For others, Please consult factory.
Electric Contacts ( & Atex approved)
(For dry version, with ingress protection up to IP 55 & poly carbonate dome as a window)
A) Single insulated magnetic snap action type B) Inductive type (220 V AC, 0.4 Amp.)
(230 V AC, 1 Amp.) (48 V DC, 0.5 Amp.) (available for 1000 mmWC & above )
(available for 1 kg/cm² & above)
RJ Single; normally closed (1 NC) YW Single; normally open (1 NO) XX
Design and specifications subject to change without notice

RK Double; normally closed + normally open (1 NC +1 NO) YV Single; normally closed (1 NC)
RL Single; normally open (1 NO) YX Double; normally closed + normally open (1 NC +1 NO)
RM Double; normally open + normally closed (1 NO + 1 NC) YY Double; normally open (both NO)
RN Double; normally closed (both NC) YZ Double; normally closed (both NC)
RO Double; normally open (both NO) ZA Double; normally open + normally closed (1 NO + 1 NC)
RU Booster with relay for current upto 5 Amp.
RA SPDT DAMPENING LIQUIDS: CODE
RC DPDT DAMPENING LIQUIDS: CODE

Ordering Example: BA . X . X OR XX . XXX . XX-XX . 0/2 kg/cm2 . XX . XX

For other optional items, please contact factory for delivery and minimum quantity of order.
For diaphragm seals, valves & manifolds, refer individual data sheets.
(The capillary length shall be maximum up to 3 meters & range shall be above 1 kg/cm².)
Note : Specifications and dimensions given in this product catalogue represents the state of engineering at the time of printing.
Modifications may take place and materials specified may be replaced by others without prior notice.
31- 08 -12

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