Pressure

Pressure sensor
For precision measurements
Model P-30, P-31
WIKA data sheet PE 81.54

for further approvals

see page 6

Applications
■ Measurement and test benches
■ Calibration technology
■ Laboratories
■ Plant construction and machine building

Special features
■ Accuracy 0.1 %, without additional temperature error in a
range of 10 ... 60 °C [10 ... 140 °F]
■ Optional accuracy of 0.05 % (full scale) available
■ Fast measuring rates up to 1 kHz
■ Analogue, USB and CANopen output signals available
■ On-site calibration possible using product software

Fig. left: Process connection with pressure channel

Fig. right: Flush process connection

Description

Precise Versatile
The model P-30 and P-31 pressure sensors have been The models P-30 and P-31 offer a wide selection of electrical
developed for precision measurements and guarantee connections, process connections and measuring ranges, as
precision measurements with a maximum measuring well as a large number of different output signals. In addition
deviation of as low as 0.05 % of span. As a result of their to the standard analogue signals, USB and CANopen
active temperature compensation, these pressure sensors versions are also available.
have no additional temperature error in the range of
10 ... 60 °C [10 ... 140 °F]. Via a USB service interface and the WIKA configuration
software "EasyCom", the models P-30 and P-31 can quickly
Fast and easily be adjusted on site.
The high measuring and output rates of up to 1 kHz make the
measured value available as quickly as possible. Thanks to the simple-to-use software “Wika data logger“, the
USB version can also be used to save measured values and
Compact create customised reports.
The compact design makes the pressure sensor ideal for
mounting into test benches, such as 19" racks.

WIKA data sheet PE 81.54 ∙ 01/2020 Page 1 of 9

Measuring ranges
Relative pressure
bar 0 ... 0.25 0 ... 0.4 0 ... 0.6 0 ... 1 0 ... 1.6 0 ... 2.5 0 ... 4
0 ... 6 0 ... 10 0 ... 16 0 ... 25 0 ... 40 0 ... 60 0 ... 100
0 ... 160 0 ... 250 0 ... 400 0 ... 600 0 ... 1,000 1)

psi 0 ... 5 0 ... 10 0 ... 15 0 ... 25 0 ... 30 0 ... 50 0 ... 100

0 ... 160 0 ... 200 0 ... 300 0 ... 500 0 ... 1,000 0 ... 1,500 0 ... 2,000
0 ... 3,000 0 ... 5,000 0 ... 10,000
1) not available for model P-31

Absolute pressure
bar 0 ... 0.25 2) 0 ... 0.4 0 ... 0.6 0 ... 1 0.8 ... 1.2 2) 0 ... 1.6 0 ... 2.5
0 ... 4 0 ... 6 0 ... 10 0 ... 16 0 ... 25
psi 0 ... 5 0 ... 10 0 ... 15 0 ... 25 0 ... 30 0 ... 50 0 ... 100
0 ... 160 0 ... 200 0 ... 300
2) only available with an accuracy of 0.1 % of span

Vacuum and +/- measuring range

bar -1 … 0 -0.6 … 0 -0.4 … 0 -0.25 … 0 -1 … +0.6
-1 … +1 -1 … +1.5 -1 … +3 -1 … +5 -1 … +9
-1 … +15
psi -30 inHg ... 0 -30 inHg ... +15 -30 inHg ... +30 -30 inHg ... +50 -30 inHg ... +100
-30 inHg ... +160 -30 inHg ... +200

The given measuring ranges are also available in mbar, kg/cm2 and MPa.
Other measuring ranges on request.

Overload safety
The overload safety is based on the sensor element used. Depending on the selected process connection and sealing,
restrictions in overload safety can result.
A higher overload safety will result in a higher temperature error.

Measuring ranges ≤ 25 bar [≤ 400 psi]: 3-fold

Measuring ranges 40 ... 600 bar [500 ... 5,000 psi]: 2-fold 1)
Measuring range 1,000 bar: 1.5-fold

1) 1.5-fold overload safety with 1,000 psi, 1,500 psi and 10,000 psi

Vacuum resistance
Yes

WIKA data sheet PE 81.54 ∙ 01/2020 Page 2 of 9

Output signal Accuracy data
Signal type Signal Accuracy at reference conditions
Current (2-wire) 4 ... 20 mA
Accuracy
Current (3-wire) 4 ... 20 mA
Standard ≤ ±0,1 % of span
0 ... 20 mA
Option ≤ ±0,05 % of span
Voltage (3-wire) DC 0 ... 10 V
DC 0 ... 5 V
Including non-linearity, hysteresis, non-repeatability, zero
USB per P-30/P-31 interface protocol
offset and end value deviation (corresponds to measured
CANopen per CiA DS404 error per IEC 61298-2). Calibrated in vertical mounting
position with process connection facing downwards.

Voltage supply Non-linearity (per IEC 61298-2)

≤ ±0.04 % of span BFSL
Power supply
The permissible power supply depends on the corresponding Temperature error
output signal. In the range of -20 ... +80 °C [-4 ... +176 °F] the instrument is
■ 4 ... 20 mA (2-wire): DC 9 ...30 V actively compensated.
■ -20 ... +10 °C [-4 ... +50 °F]: ≤ ±0,2 % of span/10 K
■ 4 ... 20 mA (3-wire): DC 9 ...30 V
■ 10 ... 60 °C [50 ... 140 °F]: no additional error 1)
■ 0 ... 20 mA (3-wire): DC 9 ...30 V
■ 60 ... 80 °C [140 ... 176 °F]: ≤ ±0,2 % of span/10 K
■ DC 0 ... 5 V: DC 9 ...30 V
■ DC 0 ... 10 V: DC 14 ... 30 V 1) For the optional accuracy at reference conditions of ≤ ±0.05 % of span there is an
additional temperature error of ≤ ±0.05 % of span.
■ USB: DC 4,5 ... 5,5 V
■ CANopen: DC 9 ...30 V
Total error band (10 ... 60 °C) [50 ... 140 °F]
≤ ±0.1 % of span
Total current consumption
The total current consumption is dependent on the respective
Long-term stability
signal type.
≤ ±0.1 % of span/year
■ Current (2-wire): max. 25 mA
■ Current (3-wire): max. 45 mA Adjustability
■ Voltage (3-wire): max. 10 mA Adjustment via the "EasyCom 2011" or "EasyCom CANopen"
■ USB: 40 mA software
■ CANopen: 60 mA
Zero point: -5 ... +20 % of span
Load Span: -20 ... +5 % of span
■ Current (2-wire): ≤ (power supply - 9 V) / 0,02 A
■ Current (3-wire): ≤ (power supply - 9 V) / 0,02 A Measuring rate
■ Voltage (3-wire): > max. output signal / 1 mA The measuring rate is dependent on the respective signal
type.
■ 2-wire: 2 ms
■ 3-wire: 1 ms
■ USB: 3 ms
■ CANopen: 1 ms

WIKA data sheet PE 81.54 ∙ 01/2020 Page 3 of 9

Reference conditions Electrical connections

Temperature Short-circuit resistance

15 ... 25 °C [59 ... 77 °F] ■ S+ vs. U-
■ CAN-High/CAN-Low vs. U+/U-
Atmospheric pressure
860 ... 1,060 mbar [12.47 ... 15.37 psi] Reverse polarity protection
U+ vs. U-
Humidity
45 ... 75 % relative Overvoltage protection
DC 36 V (not with USB version)
Power supply
■ DC 24 V Insulation voltage
■ DC 5 V with USB version DC 500 V

Warm-up time Connection diagrams

< 10 min Circular connector M12 x 1 (4-pin)
2-wire 3-wire
Mounting position
Process connection lower mount (LM) U+ 1 1
U- 3 3
S+ - 4
Operating conditions
Angular connector DIN 175301-803 A
Ingress protection (perIEC/EN 60529) 2-wire 3-wire
The ingress protection depends on the type of electrical U+ 1 1
connection. U- 2 2
■ Angular connector DIN 175301-803 A: IP65 S+ - 3
■ Circular connector M12 x 1 (4-pin): IP67
■ Circular connector M16 x 0.75 (5-pin): IP67 Circular connector M16 x 0.75 (5-pin)
■ Bayonet connector: IP67 2-wire 3-wire
■ CANopen M12 x 1 (5-pin): IP67
U+ 3 3
■ USB: IP67
U- 1 4
■ Cable outlet: IP67
S+ - 1
The stated ingress protection only applies when plugged in
using mating connectors that have the appropriate ingress Bayonet connector
protection. 2-wire 3-wire
U+ A A
Vibration resistance
10 g (IEC 60068-2-6) U- B B
S+ - C
Shock resistance
200 g (IEC 60068-2-27, mechanical) Circular connector M12 x 1 (5-pin), CANopen
2-wire
Service life U+ 2
10 million load cycles U- 3
Shield 1
Free fall test
CAN-High 4
The instrument is resistant to an impact onto concrete from a
CAN-Low 5
height of 1 m.
Cable outlet unshielded
Temperatures 2-wire 3-wire
■ Ambient: -20 ... +80 °C [-4 ... +176 °F]
U+ brown brown
■ Medium: -20 ... +105 °C [-4 ... +221 °F]
■ Storage: U- blue blue
-40 ... +85 °C [-40 ... +185 °F]
S+ - black
Cable lengths on request.

WIKA data sheet PE 81.54 ∙ 01/2020 Page 4 of 9

Process connections

Model P-30
Standard Thread size
EN 837 G¼B
G ¼ female
G½B
ISO 1179-2 G¼A
(formerly DIN 3852-E)
ANSI/ASME B1.20.1 ¼ NPT
½ NPT
- M18 x 1.5 male with G ¼ female
G ½ male with G ¼ female

Other connections on request

Model P-31
Standard Thread size
EN 837 G ½ B with flush diaphragm
G 1 B with flush diaphragm

Sealings
Thread size Standard Option
G¼B Without Cu
Stainless steel
G½B Without Cu
Stainless steel
G¼A Without NBR
FPM/FKM

For all other process connections no sealings are available.

Materials

Wetted parts
■ Stainless steel
■ Additionally Elgiloy for measuring ranges > 25 bar
■ For sealing materials see “Process connections”

Non-wetted parts
Stainless steel

WIKA data sheet PE 81.54 ∙ 01/2020 Page 5 of 9

Approvals
Logo Description Country
EU declaration of conformity European Union
■ EMC directive, EN 61326 emission (group 1, class B) and interference immunity (industrial
application)
■ Pressure equipment directive, PS > 200 bar; module A, pressure accessory
■ RoHS directive

EAC Eurasian Economic

EMC directive Community
- CRN Canada
Safety (e.g. electr. safety, overpressure, ...)

Certificates
■ Accuracy test report (included in the delivery)
■ 2.2 test report per EN 10204 1)
■ 3.1 inspection certificate per EN 10204 1)
1) option

Approvals and certificates, see website

WIKA data sheet PE 81.54 ∙ 01/2020 Page 6 of 9

Dimensions in mm

with M12 x 1 circular connector with M16 x 0.75 circular connector with bayonet connector

with angular connector with cable outlet with USB connector type A
DIN 175301-803 form A ~
~

WIKA data sheet PE 81.54 ∙ 01/2020 Page 7 of 9

Process connections for model P-30

G L1 G L1 G L1
G ¼ A DIN EN ISO 1179-2 12 G ¼ B EN 837 13 ¼ NPT 13
G ½ B EN 837 20 ½ NPT 19

G L1 L2 L3 D1 G1 G2 L1 L2 L3 G1 G2 L1 L2 L3
G¼ 20 13 10 Ø 17,5 G½B G¼ 20 15,5 13 M18 x 1,5 G¼ 20 12 9

Process connections for model P-31

G L1 L2 L3 D1 G1 L1 L2 L3 D1
G½B 23 20,5 10 Ø 18 G1B 23 20,5 10 30

WIKA data sheet PE 81.54 ∙ 01/2020 Page 8 of 9

 Accessories

CANopen version
Designation Order number
Y-connector (M12 x 1 female connector, male/female connector) 2344526
Terminating resistor (120 Ω, M12 x 1 connector) 2308274
Bus cable 0.5 m (M12 x 1 male/female connector) 2308240
Bus cable 2 m (M12 x 1 male/female connector) 2308258
PCAN-USB adapter, cable set and power supply 7483167

Analogue version
Designation Order number
P-30/P-31 USB service interface, incl. WIKA software CD 13193075

Software
The full software (EasyCom 2011, EasyCom CANopen, data logger USB and DLLs) is available to download in the download
section at www.wika.com.

Ordering information
Model / Measuring range / Output signal / Accuracy at reference conditions / Process connection / Sealing / Electrical connection

© 2009 WIKA Alexander Wiegand SE & Co. KG, all rights reserved.
The specifications given in this document represent the state of engineering at the time of publishing.
We reserve the right to make modifications to the specifications and materials.
01/2020 EN

WIKA data sheet PE 81.54 ∙ 01/2020 Page 9 of 9

WIKA Alexander Wiegand SE & Co. KG

Alexander-Wiegand-Straße 30
63911 Klingenberg/Germany
Tel. +49 9372 132-0
Fax +49 9372 132-406
info@wika.de
www.wika.de