Technical Data
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| Measuring Principle | Pressure switch |
| Characteristic | Intelligent pressure switch with piezoresistive sensor, longterm stable and overload resistant |
| Supply voltage | 10...30 VDC |
| Reference Accuracy | 0.5 %, Platinum: 0.3 % |
| Long term stability | 0.2 % of URL/year |
| 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) |
| 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 |
The Ceraphant PTP31B is a cost-effective pressure switch that safely measures and monitors absolute and gauge pressure based on the piezoresistive principle. The compact pressure switch has high stability and a maximum overload resistance of +400 bar.
Advantages
Built-in electronic switch module for monitoring and control in the discrete and process industries
Function check and on-site information display via LED indicator and digital display
Maximum overload resistance of the sensor is +400 bar
Small-size flush-mounted process connection
Areas of application
Pressure switch with metal diaphragm sensor for absolute and gauge pressure monitoring in gases, steam, liquids or dust.
Process connection: thread
Process temperature: -40...+100°C (-40...+212°F)
Process pressure: 400 mbar...+400 bar (6...+6,000 psi)
Measurement accuracy: max. ±0.3%
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Source:Endress+Hauserwebsite public information
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · Gauge and Absolute Pressure Application Case
Project Background
Municipal Wastewater Treatment customers at the Wastewater Treatment Plant stage have long faced the challenge of insufficient accuracy in effluent quality monitoring and instruments prone to contamination causing data drift, affecting compliance discharge, placing higher demands on the stability and measurement accuracy of Gauge and Absolute Pressure.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Gauge and Absolute Pressure for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Municipal Wastewater Treatment conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Food & Beverage — Food Production Line · Gauge and Absolute Pressure Application Case
Project Background
Food & Beverage customers at the Food Production Line stage have long faced the challenge of high hygienic measurement requirements, with inline instruments needing to withstand CIP/SIP cleaning while maintaining stable accuracy, placing higher demands on the stability and measurement accuracy of Gauge and Absolute Pressure.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Gauge and Absolute Pressure for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Food & Beverage conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Chemical & Pharmaceutical — Reactors and Storage Tanks · Gauge and Absolute Pressure Application Case
Project Background
Chemical & Pharmaceutical customers at the Reactors and Storage Tanks stage have long faced the challenge of highly corrosive media and complex conditions, requiring corrosion-resistant and explosion-proof instruments, placing higher demands on the stability and measurement accuracy of Gauge and Absolute Pressure.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Gauge and Absolute Pressure for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Chemical & Pharmaceutical conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Power & Energy — Power Plant Boiler and Turbine · Gauge and Absolute Pressure Application Case
Project Background
Power & Energy customers at the Power Plant Boiler and Turbine stage have long faced the challenge of unstable measurement under high temperature and pressure, with high maintenance and downtime costs, placing higher demands on the stability and measurement accuracy of Gauge and Absolute Pressure.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Gauge and Absolute Pressure for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Power & Energy conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
