
Specs at a glance
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Measuring cell
+400 mbar....+400 bar
(+6 psi...+6000 psi)
Field of application
The Ceraphant PTP31B is a price-attractive pressure switch with piezoresistive sensor for safe measurement and monitoring of absolute and gauge pressure. The pressure switch with compact design is extremely stable and overload resistant for up to +400 bar. The IO-Link capability allows easy integration and parametrization of the device.
Pressure switch with metallic sensor diaphragm for monitoring absolute and gauge pressures in gases, vapors, liquids and dusts.
Process connections: Threads
Process temperature: -40 up to +100°C (-40 to +212°F)
Process pressure: 400mbar to +400bar (6 to +6,000psi)
Accuracy: up to ±0.3%
Benefits
Integrated switching electronics for decentral and economic process monitoring and control
Function check and information on-site thanks to LEDs and digital display
Overload-resistant sensor up to 400bar
Small flush mounted process connections
IO-Link reduces costs and complexity due to easy configuration and flexible integration in all fieldbus systems.
Videos
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Pressure measuring principle
Fundamental selection
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Simple products
- Easy to select, install and operate
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
Predecessor
Success stories
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Measuring principle
Pressure switch
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Characteristic
Intelligent pressure switch with piezoresistive sensor,
longterm stable and overload resistant -
Supply voltage
10...30 VDC
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Reference Accuracy
0.5 %,
Platinum: 0.3 % -
Long term stability
0.2 % of URL/year
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Process temperature
-40 °C...+100 °C
(-40 °F...+212 °F) -
Ambient temperature
-20 °C...+70 °C
(-4 °F...+158 °F) -
Measuring cell
+400 mbar....+400 bar
(+6 psi...+6000 psi) -
Max. overpressure limit
600 bar (9000 psi)
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Process connection
Threads:
G1/4, G1/2,
MNPT1/4, MNPT1/2,
DIN13,
JIS R1/2 -
Communication
1x PNP switch
2x PNP switch
1x PNP switch +
4...20mA analogue
AC/DC, DC-PNP
IO-Link -
Design approvals
EN 10204-3.1 Final inspection report
Cleaned from oil and grease
Set min alarm -
Specialities
Digital display
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Operating Instruction (BA)
Ceraphant PTC31B, PTP31B, PTP33B Operating Instructions
English version - 05/2018
New version available in English
Pressure switch for safe measurement and monitoring of absolute and gauge pressure
EN 18/05/201831/03/201728/10/201630/09/2016Language:
English
Version:
18/05/2018
File size:
1.3 MB
File name:
BA01270PEN_0718.pdf
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Technical Information (TI)
TI Ceraphant PTC31B, PTP31B
English version - 01/2025
New version available in English
Process pressure measurement
EN 27/01/202531/07/202320/12/201818/05/201831/03/2017Language:
English
Version:
27/01/2025
File size:
1.4 MB
File name:
TI01130PEN_0825-00.pdf
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Technical Information (TI)
TI Weld-in adapter, process adapter and flanges
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Technical Information (TI)
English version - 12/2024Level, pressure and temperature measurement
EN 06/12/202425/03/202415/09/202328/10/202130/07/2021Language:
English
Version:
06/12/2024
File size:
1.3 MB
File name:
TI00426FEN_2624.pdf
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-
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Technical Information (TI)
TI Ceraphant PTC31B, PTP31B
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Technical Information (TI)
English version - 01/2025Process pressure measurement
EN 27/01/202531/07/202320/12/201818/05/201831/03/2017Language:
English
Version:
27/01/2025
File size:
1.4 MB
File name:
TI01130PEN_0825-00.pdf
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-
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Operating Instruction (BA)
Ceraphant PTC31B, PTP31B, PTP33B Operating Instructions
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Operating Instruction (BA)
English version - 05/2018Pressure switch for safe measurement and monitoring of absolute and
gauge pressureEN 18/05/201831/03/201728/10/201630/09/2016Language:
English
Version:
18/05/2018
File size:
1.3 MB
File name:
BA01270PEN_0718.pdf
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-
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Operating Instruction (BA)
BA Ceraphant PTC31B, PTP31B, PTP33B IO-Link
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Operating Instruction (BA)
English version - 07/2023Process pressure measurement
EN 31/07/202330/09/202020/12/2018Language:
English
Version:
31/07/2023
File size:
1.5 MB
File name:
BA01911PEN_0323-00.pdf
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Short Instruction (KA)
Ceraphant PTC31B, PTP31B, PTP33B IO-Link
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Short Instruction (KA)
English version - 09/2020Process pressure measurement
EN 30/09/202020/12/2018Language:
English
Version:
30/09/2020
File size:
589.3 KB
File name:
KA01404PEN_0220.pdf
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Short Instruction (KA)
Ceraphant PTC31B, PTP31B, PTP33B Brief Operating Instructions
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Short Instruction (KA)
English version - 05/2018Pressure switch for safe measurement and monitoring of absolute and
gauge pressureEN 18/05/201831/03/201728/10/201630/09/2016Language:
English
Version:
18/05/2018
File size:
622.8 KB
File name:
KA01163PEN_0618.pdf
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Short Instruction (KA)
KA Ceraphant PTP31B
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Short Instruction (KA)
English version - 05/2023Process pressure measurement
EN 01/05/202311/04/2023Language:
English
Version:
01/05/2023
File size:
331.7 KB
File name:
KA01622PEN_0223-00.pdf
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Short Instruction (KA)
KA Ceraphant PTP31B IO-Link
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Short Instruction (KA)
English version - 05/2023Process pressure measurement
EN 01/05/202303/10/2022Language:
English
Version:
01/05/2023
File size:
327.9 KB
File name:
KA01625PEN_0223-00.pdf
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Installation Instructions (EA)
Sealing kit Installation Instruction
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Installation Instructions (EA)
English version - 08/2016Cerabar
EN 08/08/201623/07/201507/04/2015Language:
English
Version:
08/08/2016
File size:
205.3 KB
File name:
EA01128PA2_0316.pdf
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Special Documentation (SD)
SD Endress+Hauser IO-Link devices
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Special Documentation (SD)
English version - 12/2024Endress+Hauser IO-Link function blocks
For Siemens TIA PortalEN 01/12/2024Language:
English
Version:
01/12/2024
File size:
4.2 MB
File name:
SD03368SEN_0124-00.pdf
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