E&H PMD75B pressure transmitter

E&H PMD75B pressure transmitter

Product Overview

The Endress+Hauser Deltabar PMD75B is a high-performance differential pressure transmitter engineered for continuous measurement of differential pressure, level, and flow in liquids, vapors, and gases-1. As a flagship member of the new Deltabar generation, the PMD75B integrates a piezoresistive sensor with a welded metallic membrane measuring cell, delivering exceptional robustness for demanding industrial applications-1-58.

The device incorporates Endress+Hauser‘s Heartbeat Technology, enabling on-demand verification and continuous monitoring of the device’s health while the process remains operational-1. Wireless operation via the SmartBlue App using a secure Bluetooth connection allows remote commissioning and maintenance, significantly reducing site access requirements and improving operational safety-1. An RFID tag embedded in the housing facilitates quick device identification during maintenance rounds-3.

Key Technical Specifications

Long-Term Stability

Environmental & Process Conditions

Electrical & Communication

Wetted Materials

Process Connections

The PMD75B supports multiple process connection standards including NPT 1/4–18 and RC 1/4“, with additional flanged versions available for specific installation requirements-27.

Housing & Electrical Connection

The transmitter is available with housing options in aluminium or 316L stainless steel, providing robust protection for harsh industrial environments-27. The ingress protection rating meets IP66/68 and NEMA Type 4X/6P standards, ensuring reliable performance even in challenging conditions-23.

Approvals & Certifications

Heartbeat Technology & Advanced Diagnostics

The PMD75B features Heartbeat Technology, a comprehensive diagnostic suite that provides:

Continuous verification – The health of the device can be verified while the process is running, increasing plant availability-1.

Early anomaly detection – Detects unwanted process anomalies such as plugged impulse lines before they escalate into critical failures-1.

Status indication – The display changes from green to red when diagnostic messages occur, providing immediate visual feedback of device condition-1.

SIL commissioning assistance – Error-free SIL commissioning and instrument-guided proof testing reduce systematic failures-1.

Wireless Operation with SmartBlue App

The optional Bluetooth connectivity enables secure remote operation via the SmartBlue App, offering:

Remote commissioning and parameterization from mobile devices or tablets-1.

Access to devices installed in hard-to-reach process areas without physical proximity-1.

Condition-based maintenance strategies that increase plant availability by enabling predictive interventions-1.

FLEX Selection Framework

The PMD75B is part of Endress+Hauser‘s FLEX selection framework, offering four product tiers to match application requirements-1:

Fundamental – Meet basic measurement needs

Lean – Handle core processes easily

Extended – Optimize processes with innovative technologies

Xpert – Master the most challenging applications

PMD75B Complete Configuration Examples

The order code defines the exact device configuration. Below are representative complete order codes demonstrating the configurability of the platform:

PMD75B-AABAFJH37LJKSAJA1BEHQ1 – This configuration features a 4-20mA HART output, 10 mbar sensor range, and includes Bluetooth connectivity with a touch control display, suitable for applications requiring remote access and advanced local operation-5.

PMD75B-CBBAEKH37BBASAJA7GLA – This variant is approved for hazardous area installations with an ATEX/IECEx Ex ia certification, featuring a 4-20mA HART output and a 40 mbar sensor range-5.

PMD75B-CCBAFJH37FEASAJA1DEHQ1 – Configured for non-hazardous installations with a standard accuracy specification, this model includes a touch control display and supports HART communication-5.

PMD75B-AABAEJH37FJGSAJA1BF1JANT – This high-end configuration includes Platinum accuracy (0.035%), a 10 mbar sensor range, and features Bluetooth connectivity with enhanced diagnostics-5.

PMD75B-CCBAFJH37MFNSAXA1DAA – A cost-optimized configuration for non-hazardous installations, utilizing a 4-20mA HART output without local display, relying entirely on digital communication-5.

PMD75B-CDBAEJH37DJASAJA1D – This variant features a 40 mbar sensor range and a 4-20mA HART output with a standard aluminium housing, ideal for general industrial applications-5.

Applications

The Deltabar PMD75B is suitable for a wide range of differential pressure measurement tasks across process industries:

Flow measurement – Used with primary flow elements such as orifice plates or Venturi tubes to infer flow rate based on differential pressure-58.

Level measurement – Measures liquid level in tanks and vessels by measuring the pressure exerted by the liquid column-58.

Filter monitoring – Detects clogging in filters by monitoring the pressure differential across the filter element-58.

Cleanroom differential pressure – The standard accuracy of 0.05% (Platinum accuracy of 0.035%) enables high-precision micro-differential pressure monitoring down to -50~50Pa ranges, essential for maintaining cleanroom integrity-39.

Pump differential pressure monitoring – Tracks pump performance and provides feedback for control loops-58.

Key Features & Benefits

Integrated Heartbeat Technology – Enables verification and monitoring to detect anomalies like plugged impulse lines while the process is running, maximizing plant availability-1.

Bluetooth wireless operation – Secure remote configuration and monitoring via the SmartBlue App allows device access without physical proximity, reducing site safety risks and enabling maintenance of hard-to-reach installations-1.

Intuitive digital assistants – Wizards guide users through commissioning, proof testing, and SIL verification, reducing errors and enabling straightforward SIL2/SIL3 deployments-1.

HistoROM data module – Enables convenient management of process and device parameters for analysis and diagnostics, supporting plug-and-play functionality-3.

RFID tag – Embedded for easy device identification during maintenance rounds-3.

Multiple communication options – Available with 4-20mA HART, PROFINET over Ethernet-APL, and PROFIBUS PA, ensuring seamless integration into both legacy and modern automation infrastructures-27.

Modular design – Allows easy replacement of sensor, display, or electronics, minimizing downtime during maintenance-58.

Extensive material options – Wetted parts available in 316L, Alloy C, Tantalum, Monel, and Gold for compatibility with aggressive media across diverse applications-1.

Conclusion

The Endress+Hauser Deltabar PMD75B differential pressure transmitter combines piezoresistive sensor technology with intelligent digital features to deliver high-precision measurements across demanding industrial applications. With a pressure measuring range up to 250 bar (3750 psi), Platinum accuracy of 0.035%, Heartbeat Technology for continuous diagnostics, and Bluetooth-enabled remote operation, the PMD75B is a versatile solution for differential pressure, level, and flow measurement tasks. Its extensive approval portfolio (ATEX, CSA, IECEx, SIL, NACE, NSF) and broad material compatibility make it suitable for applications ranging from basic process monitoring to safety-critical installations in the most challenging environments.

For complete product information, technical documentation, and ordering options, please visit the official Endress+Hauser website or consult your authorized E&H distributor.