Technical Data
CompareContinuous / Liquids
| Measuring Principle | Absolute and gauge pressure |
| Characteristic / Application | Cost effective pressure transducer, capacitive sensor with ceramic measuring diaphragm |
| Supply / Communication | 10…30 VDC |
| Accuracy | 0.3 % |
| Long term stability | 0.2 % of URL/year |
| Ambient temperature | -40 °C…+85 °C (-40 °F…+185 °F) |
| Process temperature | -25 °C…+100 °C (-13 °F....+185 °F) |
| Process pressure / max. overpressure limit | max. 60 bar (900 psi) |
| Pressure measuring range | +100 mbar…+40 bar (+1.5 psi...+600 psi) |
| Process connection | Threads: G1/4, G1/2, MNPT 1/4, MNPT 1/2, DIN13, JIS R1/2 |
| Communication | 4...20 mA, IO-Link |
| Certificates / Approvals | ATEX, FM, CSA, IEC Ex, NEPSI, UK Ex |
| Design approvals | EN 10204-3.1 Final inspection report Cleaned from oil and grease Cleaned for oxygen applications |
| Marine approval | RINA, KR |
Pressure
| Measuring Principle | Absolute and gauge pressure |
| Characteristic | Cost effective pressure transducer, capacitive sensor with ceramic measuring diaphragm |
| Supply voltage | 10…30 VDC |
| Reference Accuracy | 0.3 % |
| Long term stability | 0.2 % of URL/year |
| Process temperature | -25 °C…+100 °C (-13 °F....+185 °F) |
| Ambient temperature | -40 °C…+85 °C (-40 °F…+185 °F) |
| Measuring cell | +100 mbar…+40 bar (+1.5 psi...+600 psi) |
| Max. overpressure limit | max. 60 bar (900 psi) |
| Process connection | Threads: G1/4, G1/2, MNPT 1/4, MNPT 1/2, DIN13, JIS R1/2 |
| Communication | 4...20 mA, IO-Link |
| Certificates / Approvals | ATEX, FM, CSA, IEC Ex, NEPSI, UK Ex |
| Design approvals | EN 10204-3.1 Final inspection report Cleaned from oil and grease Cleaned for oxygen applications |
| Marine approvals | RINA, KR |
The Cerabar PMC21 is a compact pressure transmitter. A capacitive, non-oil-filled ceramic diaphragm sensor is used for absolute or gauge pressure measurement with a range from 100 mbar to 40 bar. The transmitter can measure under harsh conditions in the process industry, with a degree of protection up to IP68, a highly wear-resistant Ceraphire diaphragm and a high-quality 316L housing. With multiple approvals (e.g. explosion protection approval or marine approval), it meets the requirements of most measurement applications.
Advantages
Compact design and customizable measuring range enable convenient installation and setup in process applications
Reference accuracy of up to 0.3%, combined with high long-term stability and repeatability, ensuring high-quality process monitoring; all tests passed during production ensure high quality
A wide range of additional options and process connections fully cope with even harsh conditions; instruments with IP68 degree of protection are also available
The PMC21 meets the documentation, traceability and safety requirements of plants, can be used in various hazardous areas, and has marine approval and EN10204 3.1 material certification
Areas of application
The capacitive pressure transmitter uses a non-oil-filled ceramic diaphragm sensor for absolute or gauge pressure measurement of gases or liquids.
Process connection: thread
Process temperature: -25...+100°C (-13...+212°F)
Process pressure: 100 mbar...+40 bar (1.5...+600 psi)
Measurement accuracy: ±0.3% of full scale
International explosion protection approval, marine approval and cleaning for oxygen applications
Spare Parts & Accessories 6
6 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 71280307 | Hirschmann connector M16Consists of: plug connector, screw, seal, valve plug ring, adapter ring. Usage: FTI26, FTL31/FTL33, FTW33, PMC11, PMC21, PMP11, PMP21/PMP23. | Details |
| 71280349 | Hirschmann connector NPTF1/2Consists of: plug connector, screw, seal, valve plug ring, adapter ring. Usage: FTI26, FTL31/FTL33, FTW33, PMC11, PMC21, PMP11, PMP21/PMP23. | Details |
| 52010285 | M12 connector, 90° angled, with 5 m cable适用于M12插头 带5m电缆 PVC材质，铜镀锡/ 镍锁紧螺母 | Details |
| 52006263 | Process connection | Socket for plug 4p-125V, 4A-M12M12 插头 自连接 M12转成格兰 | Details |
| 71395803 | FTI26 Explosion-Proof SheathMaterial: PC. Mandatory for Ex-version. W/o Ex-protection cover the following Ex-protection is not guaranteed: FTI26: Dust Ex-protection. PMC21, PMP21: Ex ec approval. | Details |
| 52022914 | Display module插接式显示模块 4-20mA, 4位红色数字显示, 霍斯曼接头DIN43650, 防护等级IP65, 压降 < 5V Cerabar T | Details |
Configurator / Comparison
Source:Endress+Hauserwebsite public information
Measuring principle video
Click to playManuals & Documents 8
All documents for this model8 documents · click to expand
BA Cerabar PMC11, PMC21, PMP11, PMP21, PMP23 Chinese
BA Cerabar PMC21 IO-Link Chinese
Cerabar PMC11, PMC21, PMP11, PMP21, PMP23 English
BA Cerabar PMC21 IO-Link English
TI Cerabar PMC11, PMC21, PMP11, PMP21 Chinese
TI Cerabar PMC21 IO-Link Chinese
TI Cerabar PMC11, PMC21, PMP11, PMP21 English
TI Cerabar PMC21 IO-Link English
Case 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.
