E&H PTC31B pressure switch
Model：PTC31B-CABE1EGBVWJ+A
Manufacturer: ENDRESS + HAUSER
Size: 5*10*10cm
Detail Specification: pressure switch
Comment:Carton
Shipping Weight: 1Kg
Estimated Lead Time: 12 Weeks
Payment：T/T
HS CODE：9026201090
product details
E&H PTC31B pressure switch
Endress+Hauser Ceraphant PTC31B Pressure Switch: Oil-Free Ceramic Sensor for Demanding Industrial Applications
Precision Vacuum-Resistant Pressure Monitoring with the Ceraphant PTC31B Series
The Endress+Hauser Ceraphant PTC31B pressure switch delivers reliable absolute and gauge pressure monitoring in a compact, cost-effective design. Built with an oil-free ceramic sensor diaphragm (Ceraphire®), this intelligent pressure switch is specifically engineered for safe measurement of gases, vapors, liquids and dusts in industrial environments requiring exceptional vacuum resistance and media compatibility.
The E&H PTC31B pressure switch combines integrated switching electronics with optional IO-Link communication, enabling decentralized process monitoring and control while eliminating the risk of oil contamination in sensitive processes. Its dry capacitance ceramic measuring cell ensures long-term stability and outstanding abrasion resistance even under harsh conditions.
Core Technical Specifications
| Parameter | Specification |
| Measuring Principle | Pressure switch with capacitive ceramic sensor (Ceraphire®) |
| Measurement Type | Absolute and gauge pressure |
| Measuring Cell Range | +100 mbar to +40 bar (+1.5 psi to +600 psi) |
| Vacuum Resistance | Up to 0 bar absolute (full vacuum) |
| Max. Overpressure Limit | 60 bar (900 psi) |
| Reference Accuracy | 0.5% (standard); Platinum: 0.3% |
| Long-term Stability | 0.2% of URL/year |
| Process Temperature | -25 to +100°C (-13 to +212°F) |
| Ambient Temperature | -20 to +70°C (-4 to +158°F) |
| Supply Voltage | 10 to 30 VDC |
| Housing Material | Stainless steel |
| Process Connections | Threaded: G1/4, G1/2, MNPT1/4, MNPT1/2, DIN13, JIS R1/2 |
| Output Options | 1x PNP switch; 2x PNP switch; 1x PNP switch + 4-20 mA analog |
| Communication | Optional IO-Link |
| Electrical Connection | M12 plug; Valve connector ISO4400 M16 |
| Ingress Protection | IP65, IP67, NEMA Type 4X |
| Special Features | Digital display, LED status indicators, oil-free ceramic sensor |
| Design Approvals | EN 10204-3.1 final inspection report; cleaned from oil and grease; cleaned for oxygen applications; set min alarm |
The Ceraphant PTC31B is a price-attractive pressure switch with a ceramic, vacuum-tight measuring cell for safe measurement and monitoring of absolute and gauge pressure-2. The pressure switch with compact design is extremely stable and high vacuum resistant up to 0 bar absolute-2.
Model Code Breakdown: PTC31B-CABE1EGBVWJ+A
Endress+Hauser utilizes a structured ordering code system to precisely define each Ceraphant PTC31B pressure switch configuration. The following breakdown explains the detailed configuration of PTC31B-CABE1EGBVWJ+A:
| Position | Code | Meaning |
| 1-5 | PTC31B | Ceraphant T series pressure switch — oil-free ceramic sensor for industrial applications |
| 6 | C | Approval: Non-hazardous area (standard industrial) |
| 7 | A | Measuring range type: Customer-specific / calibrated |
| 8 | B | Sensor range: 400 mbar to 40 bar gauge pressure |
| 9 | E | Process connection: G1/2 threaded connection |
| 10 | 1 | Wetted material: Ceramic sensor + stainless steel |
| 11 | E | Output: 1x PNP switch output + 4-20 mA analog |
| 12 | G | Electrical connection: Valve connector ISO4400 M16 |
| 13 | B | Housing type: Standard stainless steel |
| 14 | V | Display: With digital display |
| 15 | W | Additional options: Standard factory configuration |
| 16 | J | Certification: EN 10204-3.1 final inspection report |
| 17 | +A | Special version: Standard factory setting |
This configuration delivers a non-hazardous area approved pressure switch featuring a G1/2 threaded process connection, combined 1x PNP switch output with 4-20 mA analog signal transmission, valve connector ISO4400 M16 electrical connection, integrated digital display, and comprehensive factory inspection certification.
Additional Ceraphant PTC31B pressure switch configurations available in the market include:
PTC31B-AA7M1PGBWBJA — Gauge pressure, 0–10 bar range, G1/2 thread, PNP switch + 4-20 mA analog output, M12 plug, IP65/IP67 protection
PTC31B-AA8M1CGFVXJA — PNP-switching pressure sensor with 1/2″ NPT male or 1/4″ NPT female process connection, M12 plug connection, ideal for measuring liquids, gases and dusts
PTC31B-AA3M1PGBWBJA — 1x PNP switch output, 4-20 mA analog, M12 plug, IP65/IP67 NEMA Type 4X enclosure
PTC31B-AAAM1PGBWBJA — Customer-specific measuring range configuration
PTC31B-CA7M1PGBWBJA — Absolute pressure measurement variant with analog output
Key Features and Benefits
Oil-Free Ceramic Sensor Technology
The PTC31B pressure switch features a dry capacitance ceramic sensor (Ceraphire®) that requires no oil filling. This eliminates the risk of media contamination and makes the device ideal for applications in the food, pharmaceutical and chemical industries where purity is critical-22. The ceramic diaphragm provides exceptional abrasion resistance for demanding media.
Full Vacuum Capability
Unlike many pressure sensors that fail under vacuum conditions, the Ceraphant PTC31B withstands absolute vacuum down to 0 bar. The sensor is extremely stable and high vacuum resistant, ensuring high process availability for vacuum applications and applications with abrasive media-22.
IO-Link Smart Communication
Select models of the E&H PTC31B pressure switch support IO-Link communication, reducing costs and complexity due to easy configuration and flexible integration into all fieldbus systems-22. IO-Link enables remote parameterization, real-time access to process values and diagnostic data, simplified device replacement with automatic parameter download, and supports Industry 4.0 digital transformation initiatives.
Integrated Intelligence
The built-in switching electronics enable decentralized process monitoring and control without requiring external control cabinets. LED indicators provide green (OK) and red (error) status information on site, while the optional digital display allows direct readout of process values-22.
Wide Measuring Range and Overload Protection
With a measuring cell range from +100 mbar up to +40 bar and a maximum overpressure limit of 60 bar (900 psi), the Ceraphant PTC31B offers reliable operation even under severe pressure spikes-1-2. The minimum span capability of 0 to 20 mbar provides reliable insight into low-pressure processes.
Extended 5-Year Warranty
Fundamental Selection instruments like the Ceraphant PTC31B feature an extended 5-year warranty, demonstrating Endress+Hauser‘s confidence in long-term reliability and performance-22.
Application Fields
The PTC31B pressure switch is ideally suited for the following industrial applications:
| Industry | Typical Applications |
| General Process Industries | Tank level monitoring, filter differential pressure, pump protection |
| Pneumatic Systems | Compressed air monitoring, vacuum systems |
| Hydraulic Systems | Pressure alarm and shutdown circuits |
| Chemical Industry | Corrosive media monitoring (ceramic sensor compatible) |
| Pharmaceutical | Purity-sensitive applications requiring oil-free measurement |
| Food and Beverage | Non-hygienic areas requiring oil-free sensors |
| Water and Wastewater | Pump protection, line pressure monitoring |
The pressure switch with ceramic sensor diaphragm is suitable for monitoring absolute and gauge pressures in gases, vapors, liquids and dusts-2.
Output Configurations and Communication Options
The Ceraphant PTC31B series offers flexible output configurations to accommodate various industrial automation architectures:
| Output Type | Description |
| 1x PNP switch | Single switching output, N.O./N.C. selectable |
| 2x PNP switch | Dual independent switching outputs |
| 1x PNP switch + 4-20 mA analog | Combined switching and analog process value transmission |
| IO-Link (select models) | Digital communication for easy configuration, real-time data access, and flexible fieldbus integration |
Comparison with Other Ceraphant Series
| Feature | PTC31B | PTP31B | PTP33B |
| Sensor Technology | Oil-free ceramic (Ceraphire®) | Welded metal diaphragm | Welded metal diaphragm |
| Target Application | General industrial, oil-free requirement | General industrial, high pressure | Hygienic (CIP/SIP, 3-A, EHEDG) |
| Measuring Range | +100 mbar to +40 bar | 400 mbar to +400 bar | 400 mbar to +40 bar |
| Overpressure Limit | 60 bar | 600 bar | 160 bar |
| Vacuum Resistance | 0 bar absolute | — | — |
| Process Connections | Threaded only | Threaded | Threaded + hygienic (Tri Clamp, DIN11851, SMS, Varivent) |
| 3-A / EHEDG | No | No | Yes |
The PTC31B is the optimal choice when oil-free measurement and vacuum resistance are critical. For high-pressure applications (up to 400 bar), the PTP31B offers a welded metal diaphragm alternative. For hygienic applications requiring 3-A and EHEDG certifications, the PTP33B provides flush-mounted hygienic process connections and CIP/SIP suitability-.
Installation Considerations
The compact design of the PTC31B pressure switch allows time-saving installation even in space-constrained applications. Key installation features include:
Compact pressure transducer form factor for tight spaces
Multiple threaded process connection options (G1/4, G1/2, MNPT1/4, MNPT1/2, DIN13, JIS R1/2)
Rotatable housing for optimal display readability in any orientation
IP65/IP67 ingress protection ratings for harsh industrial environments
For pressure measurement in gases, mount the device with shutoff device above the tapping point so that any condensate can flow into the process-
Compliance and Documentation
The PTC31B pressure switch ships with comprehensive documentation:
Technical Information (TI01130P) — Complete product specifications
Operating Instructions (BA01270P) — Installation, connection, operation, and commissioning
IO-Link Operating Instructions (BA01911P) — Digital communication configuration
Short Instructions (KA) — Quick start guide
Complete technical documentation for the Ceraphant PTC31B series is available through the Endress+Hauser documentation portal. For device-specific information, enter serial numbers from nameplates in the W@M Device Viewer at www.endress.com/deviceviewer[reference:12].
Why Choose the Endress+Hauser Ceraphant PTC31B?
The E&H PTC31B pressure switch delivers the optimal balance of affordability, performance, and media compatibility for industrial pressure monitoring applications. Unlike oil-filled pressure sensors that risk media contamination upon diaphragm rupture, the PTC31B‘s dry ceramic sensor eliminates this risk entirely. Its full vacuum capability, abrasion-resistant ceramic diaphragm, and IO-Link smart communication make the Ceraphant PTC31B the intelligent choice for demanding process applications.
For model-specific support for configurations including PTC31B-CABE1EGBVWJ+A, PTC31B-AA7M1PGBWBJA, PTC31B-AA8M1CGFVXJA, and other variants, contact your local Endress+Hauser sales representative or authorized distributor.
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