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Absolute and gauge pressure Ceraphant PTC31B

Cost-effective pressure switch with oil-free ceramic sensor for measurement in gases or liquids

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Have questions about this product?

Absolute and gauge pressure Ceraphant PTC31B

Cost-effective pressure switch with oil-free ceramic sensor for measurement in gases or liquids

Get a quote
Office situation support
Have questions about this product?

Benefits

  • Integrated switching electronics for decentral and economic process monitoring and control
  • Easy function check and information on site thanks to LEDs and digital display
  • Dry capacitance ceramic sensor (Ceraphire) and minimum span of up to 0 to 20mbar provide reliable insight to the process
  • High process availability for vacuum applications and applications with abrasive media
  • IO-Link reduces costs and complexity due to easy configuration and flexible integration in all fieldbus systems.

Integrated technologies

IO-Link digital communication technology
FLEXible answers to individual needs
Current product

Absolute and gauge pressure Ceraphant PTC31B

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  • Easy to select, install and operate

What is FLEX?

FLEX selections
Technical excellence
Simplicity
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Fundamental selection Meet your basic measurement needs
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Lean selection Handle your core processes easily
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Extended selection Optimize your processes with innovative technologies
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Xpert selection Master your most challenging applications
Variable
5-year warranty

Engineered for Confidence

Our Fundamental Selection instruments feature an extended 5-year warranty – a clear testament of our trust in their long-term reliability and performance.

Should a warranty case occur, you can count on a fast replacement process and minimal administrative effort – giving you peace of mind when it matters most and helping you keep your operations running smoothly.

Warranty terms apply

The extended warranty is subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

Services by your side

Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

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Select and download all technical documentation such as operating manuals, calibration certificates, approvals and CAD drawings conveniently bundled as a complete documentation package for your entire order or quote.

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My Endress+Hauser is your 24/7 connection to Endress+Hauser – in the office, in the field or on the go. It brings together transaction management, documentation and software downloads, knowledge base access, customer support, engineering tools and cloud‑based IIoT services helping you work easier, faster and more efficiently.

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Technology
IO-Link digital communication technology

IO-Link communication

IO-Link makes basic field devices digitally accessible and supports offline parameterization, data transparency and plug-and-produce device exchange.

Product information

Ceraphant PTC31B - Absolute and gauge pressure
Absolute/gauge pressure Ceraphant PTC31B
Specifications
Measuring / Application task Pressure
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Description

The Ceraphant PTC31B is a price-attractive pressure switch with ceramic, vacuum tight measuring cell for safe measurement and monitoring of absolute and gauge pressure. The pressure switch with compact design is extremely stable and high vacuum resistant up to 0bar abs. The IO-Link capability allows easy integration and parametrization of the device.

Field of application

Pressure switch with ceramic sensor diaphragm for monitoring absolute and gauge pressures in gases, vapors, liquids and dusts.

  • Process connections: Threads
  • Process temperature: -25 to +100°C (-13 to +212°F)
  • Pressure: -1/0 up to +40bar (-15/0 up to +600psi)
  • Accuracy: ±0.3%
Benefits
  • Integrated switching electronics for decentral and economic process monitoring and control
  • Easy function check and information on site thanks to LEDs and digital display
  • Dry capacitance ceramic sensor (Ceraphire) and minimum span of up to 0 to 20mbar provide reliable insight to the process
  • High process availability for vacuum applications and applications with abrasive media
  • IO-Link reduces costs and complexity due to easy configuration and flexible integration in all fieldbus systems.
Predecessors
Downloads
Most downloaded
Operating Instruction (BA)
BA Ceraphant PTC31B, PTP31B, PTP33B Process pressure measurement
English version - 09/2025
Download
Technical Information (TI)
TI Ceraphant PTC31B, PTP31B Process pressure measurement
English version - 09/2025
Download
Technical Information (TI)
TI Weld-in adapter, process adapter and flanges Level, pressure, temperature
English version - 06/2026
Download
The CAD Drawings will be available after the configuration.
All downloads
41 Downloads
Technical Information (TI)
TI Weld-in adapter, process adapter and flanges Level, pressure, temperature
English version - 06/2026
Download
Technical Information (TI)
Most downloaded
TI Ceraphant PTC31B, PTP31B Process pressure measurement
English version - 09/2025
Download
Operating Instruction (BA)
Most downloaded
BA Ceraphant PTC31B, PTP31B, PTP33B Process pressure measurement
English version - 09/2025
Download
Operating Instruction (BA)
BA Ceraphant PTC31B, PTP31B, PTP33B IO-Link Process pressure measurement
English version - 09/2025
Download
Short Instruction (KA)
Ceraphant PTC31B, PTP31B, PTP33B IO-Link Process pressure measurement
English version - 09/2020
Download
Short Instruction (KA)
KA Ceraphant PTC31B IO-Link Process pressure measurement
English version - 09/2025
Download
Short Instruction (KA)
KA Ceraphant PTC31B Process pressure measurement
English version - 09/2025
Download
Short Instruction (KA)
Ceraphant PTC31B, PTP31B, PTP33B Brief Operating Instructions Pressure switch for safe measurement and monitoring of absolute and
gauge pressure
English version - 05/2018
Download
Special Documentation (SD)
SD M12 socket Accessories for devices with M12 plug
English version - 01/2025
Download
Special Documentation (SD)
Valve plug Valve plug
Language neutral - 03/2016
Download
Special Documentation (SD)
SD Endress+Hauser IO-Link devices Endress+Hauser IO-Link device function blocks
For Siemens TIA Portal
English version - 07/2026
Download
Special Documentation (SD)
SD Mechanical accessories for pressure measuring devices Pressure measurement
English version - 11/2024
Download
Special Documentation (SD)
SD Endress+Hauser IO-Link devices Endress+Hauser IO-Link Add-On Instructions
for Rockwell Automation Studio 5000®
English version - 07/2026
Download
Fields of Activities (FA)
Druckmesstechnik Leistungsfähige Messgeräte für Prozessdruck, Differenzdruck, Füllstand
und Durchfluss
German version - 07/2026
Download
Competence Brochure (CP)
Druckmesstechnik: Auswahlhilfe zur Druck-, Differenzdruck-, Füllstands- und Durchflussmessung Druckmesstechnik: Auswahlhilfe zur Druck-, Differenzdruck-, Füllstands- und Durchflussmessung
German version - 03/2026
Download
Competence Brochure (CP)
Pressure instrumentation: Selection guide for pressure, differential pressure, level and flow measurement Pressure instrumentation: Selection guide for pressure, differential pressure, level and flow measurement
English version - 03/2026
Download
Manufacturer Declaration
Product family: Cerabar, Cerabar M, Cerabar S, Ceraphant, Deltabar, Deltabar M, Deltabar S, Deltapilot M, Fieldgate, Gammapilot, Lev elflex, Liquicap M, Liquicap T, Liquiphant, Liquiphant FailSafe, Liquiphant M, Liquipoint, Liquipoint T, Liquitrend, Micropilot, Mic ropilot S, Minicap, Fermentation monitor, Prosonic M, Prosonic S, Prosonic T, Solicap M, Solicap S, Soliphant M, Soliphant T, Spare parts level, Strahlenschutzbehälter, System & Gauging, Tankvision, Waterpilot Product root: FDU90-, FDU91-, FDU91F-, FDU92-, FDU93-, FDU95-, FHX40-, FHX50-, FHX50B-, FMB50-, FMB51-, FMB52-, FMB53-, FMD71-, FMD7
2-, FMD77-, FMD78-, FMG50-, FMI21-, FMI51-, FMI52-, FMP50-, FMP51-, FMP52-, FMP53-, FMP54-, FMP55-, FMP56-, FMP57-, FMR10-, FMR10B-,
FMR20-, FMR20B-, FMR30B-, FMR43-, FMR50-, FMR51-, FMR52-, FMR53-, FMR532-, FMR54-, FMR540-, FMR56-, FMR57-, FMR60B-, FMR62B-, FMR63
B-, FMR66B-, FMR67B-, FMU30-, FMU40-, FMU41-, FMU42-, FMU44-, FMX11-, FMX21-, FTC260-, FTC262-, FTI51-, FTI52-, FTI55-, FTI56-, FTI7
7-, FTL31-, FTL33-, FTL41-, FTL43-, FTL50H-, FTL51B-, FTL51H-, FTL62-, FTL63-, FTL64-, FTL80-, FTL81-, FTL85-, FTM20-, FTM21-, FTM50
-, FTM51-, FTM52-, FTW23-, FTW31-, FTW32-, FTW33-, FWR30-, NMR81-, NMR84-, NMS80-, NMS81-, NMS83-, NMT532-, NMT539-
English version - 03/2025
Download
Manufacturer Declaration
Product family: Ceraphant Product root: PTC31B-, PTP31B-, PTP33B-
Declaration number: HE_00714_01.17
Manufacturer specification: RoHS
English version - 06/2017
Download
Manufacturer Declaration
Product family: Cerabar, Cerabar M, Cerabar S, Ceraphant, Deltabar, Deltabar S, Deltapilot M, Deltapilot S, Liquiphant, Liquiphant M , Soliphant M Product root: FMB50-, FMB70-, FMD71-, FMD72-, FMD78-, FTL31-, FTL33-, FTL43-, FTL50H-, FTL51H-, FTL63-, FTM50-, FTM51-, PMC21-, PMC5
1B-, PMC71B-, PMD50-, PMD55B-, PMD63B-, PMD75B-, PMD78B-, PMP21-, PMP23-, PMP43-, PMP50-, PMP51B-, PMP55-, PMP63B-, PMP71B-, PMP75-,
PTC31B-, PTP33B-
Declaration number: HE_02158_02.26
Manufacturer specification: Food hygiene
English version - 07/2026
Download
Manufacturer Declaration
Product family: Ceraphant Product root: PTC31B-
Declaration number: HE_01589_01.22
Manufacturer specification: Food hygiene, 1935/2004
English version - 03/2022
Download
Manufacturer Declaration
Product family: Ceraphant Product root: PTC31B-
Declaration number: HE_00565_01.17
Manufacturer specification: RoHS
Chinese version - 03/2017
Download
Manufacturer Declaration
Product family: Cerabar, Cerabar M, Cerabar S, Cerabar T, Ceraphant, CERAPHANT T, DELTABAR, Deltabar M, DELTABARS, Deltapilot M, DELTAPILOT S, DOPPELSTABSONDE, Dreistabsonde, Einstabsonde, Levelflex, Liquicap M, LIQUICAP T, LIQUIPHANT, LIQUIPHANT FAILSA FE, LIQUIPHANT M, Liquiphant S, LIQUIPHANT T, LIQUIPOINT, Liquipoint T, Micropilot, Micropilot S, MINICAP, NIVECTOR, NIVOCOM PACT, NIVOTESTER, Prosonic, Prosonic M, PROSONIC P, PROSONIC S, Prosonic T, Solicap M, Solicap S, Soliphant M, SOLIPHANT T, SOLIWAVE, WATERPILOT Declaration number: HE_00678_01.17
Manufacturer specification: Food hygiene
Additional information: ADI, TSE
English version - 07/2022
Download
FDA Declaration
Product family: Ceraphant Product root: PTC31B-
Declaration number: FDA_00244_01.20
English version - 05/2020
Download
EU Declaration
Product family: Ceraphant Product root: PTC31B-, PTP31B-, PTP33B-
Declaration number: EC_00452_04.16
English version - 06/2022
Download

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Ceraphant PTC31B - Absolute and gauge pressure
Absolute/gauge pressure Ceraphant PTC31B

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Spare parts and accessories

further parts
further parts

Valve Plug ISO4400 M16, PTP/PTC3xB

further parts
further parts
Order code 71336104
further parts
further parts

Valve plug ISO4400 NPTF1/2, PTP/PTC3xB

further parts
further parts
Order code 71336105
further parts
further parts

M12-female plug connec.,90deg,cable side

further parts
further parts
Order code 71114212
further parts
further parts

M12-female plug connec., 100deg,5m cable

further parts
further parts
Order code 52010285
Spare parts and accessories

Selection of compatible products

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