Technical Data
ComparePressure
| Measuring Principle | |
| Characteristic | Intelligent pressure switch with ceramic, vacuum tight measuring cell, longterm stable and overload resistant |
| Supply voltage | 12...30VDC |
| Reference Accuracy | 0,5% |
| Long term stability | 0,15% of URL/year |
| Process temperature | -40°C...100°C (-40°F...212°F) |
| Ambient temperature | -40°C...85°C (-40°F...185°F) |
| Measuring cell | 100mbar...40bar (1.5psi...600psi) |
| Max. overpressure limit | 60bar (900psi) |
| Process connection | Threads |
| Communication | 1x PNP switch 2x PNP switch 1x PNP switch + 4...20mA analogue |
| Design approvals | EN10204-3.1 |
| Specialities | Digital display Robust SS-housing with Ra < 0,8 micron |
The Ceraphant PTC31 is an economical pressure switch with a vacuum-sealed ceramic measuring cell for the measurement and monitoring of absolute and gauge pressure.
Benefits
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Excellent accuracy, shortest response time and smallest measuring span
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Ceraphire® sensor diaphragm: corrosion-resistant, wear-resistant and highly overload-proof
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Built-in switching electronics for decentralized and economical process monitoring and control
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Modular connection for fast and flexible installation
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Excellent repeatability and long-term stability. The LED digital display module allows on-site checking of the instrument status and retrieval of information
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The upper housing can be rotated by 310 ° for convenient reading of the display.
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Compliant with DESINA standard, 3-A certified
Application areas
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The pressure switch is used to monitor the absolute and gauge pressure of gases, vapors, liquids and dust.
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The Ceraphant T PTC31 uses a ceramic sensor and measures pressure in the range from vacuum to 40 bar/600 psi.
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Electrical configuration: 1 PNP switch output, dual PNP switch outputs, PNP switch output plus analog output 4…20 mA (active).
Configurator / Comparison
Accessories/Spare parts
Source: public information from the Endress+Hauser website
Measuring principle video
Click to playManuals & Documents 5
All documents for this modelCase Studies
Municipal Wastewater Treatment · Gauge and Absolute Pressure — Application Case
Site Conditions
This is a Municipal Wastewater Treatment customer whose plant is at the inlet, biological and outlet stages of a municipal plant. The main task was measuring gauge or absolute pressure to judge process state.
The Problem
The difficulty lies in high solids and corrosive fractions, with large diurnal flow swings; at the same time effluent parameters drift and probes foul with sludge and biofilm. Specification therefore means selected by turndown, overpressure protection and diaphragm material.
What We Did
We took a pressure range approach — pressure solution matched to process pressure and temperature. Delivery was built around selected by turndown, overpressure protection and diaphragm material, with point-by-point checks on: stable compliance with Grade 1A discharge limits and online data reporting.
Operating Outcome
In service the system performs as intended — spotting abnormal pressure early, before equipment is damaged, with routine maintenance falling noticeably.
Food & Beverage · Gauge and Absolute Pressure — Application Case
Application Context
dosing, pasteurising, filling and CIP stages is a typical Food & Beverage duty. The project started from Gauge and Absolute Pressure, focusing on measuring gauge or absolute pressure to judge process state.
Process Constraints
frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles, and syrups, dairy and beverages that scale easily, under strict hygienic requirements only amplify it. The Gauge and Absolute Pressure specification must therefore cover selected by turndown, overpressure protection and diaphragm material.
Delivery Approach
Delivery was handled as the pressure range — pressure solution matched to process pressure and temperature. Execution centred on selected by turndown, overpressure protection and diaphragm material, together with food-safety and hygienic design per 3-A / EHEDG.
Field Results
Operation shows the benefit clearly — spotting abnormal pressure early, before equipment is damaged, with confidence in this measuring point improving markedly.
Chemical & Pharmaceutical · Gauge and Absolute Pressure — Application Case
Customer Profile
The typical setting in Chemical & Pharmaceutical is reactors, metering vessels and finished-product tanks. The measuring point is Gauge and Absolute Pressure; the focus is measuring gauge or absolute pressure to judge process state.
Key Difficulties
Conditions are highly corrosive media with solvents and crystallisation, partly in explosive atmospheres and, on top of that, corrosion plus Ex protection shortens instrument life and makes downtime costly, which a standard configuration cannot handle for long. The design therefore starts with selected by turndown, overpressure protection and diaphragm material.
Implementation
The scope ran through the pressure range: pressure solution matched to process pressure and temperature. Technically it hinges on selected by turndown, overpressure protection and diaphragm material, and on these requirements: Ex certification and GMP traceability of records.
Customer Benefit
In practice this means spotting abnormal pressure early, before equipment is damaged, which cut the workload on the site maintenance team.
Power & Energy · Gauge and Absolute Pressure — Application Case
Project Background
The project covers boiler feedwater, turbine condensate and FGD/DeNOx systems. The work centres on Gauge and Absolute Pressure and the core task is measuring gauge or absolute pressure to judge process state.
Operating Challenges
The medium and duty are characterised by high temperature and pressure with both steam and saline water, and drift under high temperature and pressure, with very costly unplanned outages. So Gauge and Absolute Pressure cannot be specified generically — it calls for selected by turndown, overpressure protection and diaphragm material.
Solution
The Ainstru engineering team worked through the pressure range: pressure solution matched to process pressure and temperature. The configuration involves selected by turndown, overpressure protection and diaphragm material, with these requirements in view: compliance with power-industry codes and unit availability targets.
Results
Since start-up the system has run steadily; the practical result is spotting abnormal pressure early, before equipment is damaged.
