The Endress+Hauser Cerabar PMP21 is a compact, cost-effective pressure transmitter designed for absolute and gauge pressure measurement in gases, liquids, and vapors . This pressure transducer features a piezoresistive sensor with a metallic measuring diaphragm, making it an ideal solution for standard industrial applications where reliability, accuracy, and affordability are key requirements .
As part of Endress+Hauser's Cerabar family, the PMP21 represents the Fundamental/FLEX selection category, offering easy selection, installation, and operation while maintaining the quality standards expected from a leading instrumentation manufacturer .
Key Technical Specifications
Measurement Performance
Measuring principle: Absolute and gauge pressure with piezoresistive sensor
Pressure measuring range: 400 mbar to +400 bar (6 to 6,000 psi)
Reference accuracy: ±0.3% of span
Long-term stability: 0.2% of URL per year
Measuring cell: +400 mbar to +400 bar (+6 to +6,000 psi)
Operating Conditions
Process temperature: -40 to +100°C (-40 to +212°F)
Ambient temperature: -40 to +85°C (-40 to +185°F)
Maximum overpressure limit: 600 bar (9,000 psi)
Ingress protection: Up to IP68 (submersible version available)
Electrical and Communication
Supply voltage: 10 to 30 VDC
Output signal: 4 to 20 mA analog, IO-Link option available
Communication: 2-wire technology
Process Connections
Connection type: Threaded connections only
Available thread standards:
G1/4 and G1/2 (ISO 228)
MNPT1/4 and MNPT1/2
DIN13
JIS R1/2
Model Number Breakdown: PMP21-AA1M2PBWAJ
Based on the model number PMP21-AA1M2PBWAJ, here is the interpreted configuration:
Position Code Description
Product PMP21 Cerabar PMP21 pressure transmitter
Approval A ATEX/IEC Ex (standard hazardous area approval)
Output A 4-20 mA analog output
Housing 1 Standard aluminum/plastic housing
Sensor Range M2 Custom sensor configuration (typically mid-range pressure)
Process Connection P Threaded connection
Material B 316L wetted parts
Seal/Additional Option W Standard FKM seal
Calibration/Unit A Factory calibrated in bar
Special Version J Standard version