Endress+Hauser Deltabar PMD55-BA21BA77FGBHAJA1A+AA Differential Pressure Transmitter

日期：2026-04-16 00:16

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摘要：ndress+Hauser Deltabar PMD55-BA21BA77FGBHAJA1A+AA differential pressure transmitter. ±0.1% accuracy, 4-20mA HART, 316L sensor, SIL2, -40 to 85°C, for flow/level/filter monitoring.

Endress+Hauser Deltabar PMD55-BA21BA77FGBHAJA1A+AA

Differential Pressure Transmitter

The Endress+Hauser PMD55-BA21BA77FGBHAJA1A+AA is a reliable differential pressure transmitter from the Deltabar PMD55 series, featuring a piezoresistive sensor with a welded metallic membrane. It is designed for continuous measurement of pressure differences in liquids, vapors, and gases across process and environmental applications .

This device is ideal for level, volume, or mass measurement in liquids, differential pressure monitoring (e.g., of filters and pumps), and flow measurement in conjunction with primary elements .

Order Code Interpretation: PMD55-BA21BA77FGBHAJA1A+AA

Based on Endress+Hauser's ordering structure for the Deltabar PMD55 series:

Position	Code	Interpretation
Approval	B	ATEX/IECEx hazardous area approval (Ex ia IIC T4)
Power Supply; Output	A2	4-20 mA HART, 2-wire
Housing	1B	Aluminum housing, IP66/IP67, NEMA 4X
Sensor Range	A7	Measuring cell: 10 mbar...40 bar (0.15...580 psi)
Process Connection	7F	Thread 1/4-18 NPT, 316L stainless steel
Calibration Unit	G	Calibration in mbar/bar
Additional Options	BHAJA1A+AA	Custom hardware/software configuration

Key Features & Benefits

High Accuracy & Reliability: Reference accuracy of ±0.1% standard, with optional "Platinum" version up to ±0.075% .
Wide Pressure Range & Overload Resistance: Pressure measuring range from 10 mbar to 40 bar (0.15 to 580 psi). Overload-resistant up to 160 bar (2300 psi) on one side .
SIL2 Certified: Designed according to IEC 61508 / IEC 61511 for use in SIL2 safety applications .
Easy Commissioning: Quick Setup with adjustable measuring range allows simple commissioning via local display or HART communication .
Flexible Communication: Supports 4-20 mA HART (as configured), PROFIBUS PA, and FOUNDATION Fieldbus .
Wide Temperature Range: Process temperature range of -40°C to +85°C (-40°F to +185°F) .
Modular Design: Compact size with modular concept for easy replacement of display or electronics .
Process Adaptation: Easy process adaptation to impulse line high-pressure/low-pressure change via electric switch on the main electronics .
Global Approvals: ATEX, FM, CSA, IECEx, NEPSI, NACE, SIL2 .

Technical Specifications

Parameter	Specification
Manufacturer	Endress+Hauser
Product Series	Deltabar PMD55
Measuring Principle	Differential pressure, piezoresistive sensor with welded metallic membrane
Pressure Measuring Range	10 mbar to 40 bar (0.15 to 580 psi)
Reference Accuracy	Standard: ±0.1%; Platinum: up to ±0.075% (optional)
Long-term Stability	0.05% of URL/year, 0.13% of URL/5 years
Turn Down	Up to 20:1
Smallest Calibratable Span	10 mbar (0.15 psi)
Max. Overpressure Limit	160 bar (2300 psi) on one side
Process Temperature	-40°C to +85°C (-40°F to +185°F)
Ambient Temperature	-40°C to +85°C (-40°F to +185°F)
Output Signal	4-20 mA HART (2-wire)
Supply Voltage (Non-Ex)	11.5 to 45 V DC
Supply Voltage (Ex ia)	11.5 to 30 V DC
Main Wetted Parts	316L stainless steel
Process Membrane Material	316L, AlloyC
Process Connection	1/4-18 NPT, 316L
Material Gasket	Viton, PTFE, EPDM, NBR
Fill Fluid	Silicone oil, inert oil
Housing Material	Die-cast aluminum, epoxy coated
Ingress Protection	IP66/IP67, NEMA 4X
Display	Optional 4-line digital display
Certifications	ATEX, FM, CSA, IECEx, NEPSI, NACE, SIL2

Applications

Flow Measurement: Volume or mass flow measurement in conjunction with primary elements (orifice plates, pitot tubes) in gases, vapors, and liquids .
Level Measurement: Level, volume, or mass measurement in liquids in tanks and vessels .
Differential Pressure Monitoring: Monitoring of filters, pumps, and other equipment .
Utilities Applications: Compressed air, steam, water generation and distribution systems, heating and cooling systems .
Hazardous Areas: ATEX/IECEx certified for use in explosive environments .

Deltabar PMD55-BA21BA77FGBHAJA1A+AA

Proven Reliability: ±0.1% standard accuracy with excellent long-term stability of 0.05% of URL/year .
Process Safety: SIL2 certification ensures reliable operation in safety instrumented systems .
Easy Commissioning: Menu-guided configuration via local display or HART communicator reduces setup time .
Compact & Modular: Space-saving design with modular electronics for easy maintenance .
Global Acceptance: Wide range of international approvals including ATEX, FM, CSA, and NACE .
Cost-Effective: Excellent price-performance ratio for demanding process applications .

Endress+Hauser Deltabar PMD55-BA21BA77FGBHAJA1A+AA differential pressure transmitter. ±0.1% accuracy, 4-20mA HART, 316L sensor, SIL2, -40 to 85°C, for flow/level/filter monitoring.

Endress+Hauser Deltabar PMD55-BA21BA77FGBHAJA1A+AA | Differential Pressure Transmitter

Q&A

Q1: What is the accuracy of the Deltabar PMD55-BA21BA77FGBHAJA1A+AA?

A: The Deltabar PMD55 offers a standard reference accuracy of ±0.1%. An optional "Platinum" version with up to ±0.075% accuracy is available for applications requiring higher precision . The device also features excellent long-term stability of 0.05% of URL per year .

Q2: Is the PMD55 suitable for use in safety instrumented systems?

A: Yes. The Deltabar PMD55 is SIL2 certified according to IEC 61508 / IEC 61511, making it suitable for use in safety instrumented systems for critical applications such as overfill prevention and emergency shutdown .

Q3: What communication protocols does this version support?

A: The PMD55-BA21BA77FGBHAJA1A+AA with "A2" output code supports 4-20 mA HART communication . The Deltabar PMD55 series also offers options for PROFIBUS PA and FOUNDATION Fieldbus protocols for flexible system integration

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