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All >> Pressure measurement >> Differential pressure transmitter
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*Picture for reference only !
Product name:
Differential pressure transmitter
Product series:

PMD78B

Product brand:
E+H/Endress+Hauser
Product feature:
• Wireless control of the device in hard-to-reach areas with the SmartBlue App and a Bluetooth® connection • Reduce systematic failures with error-free SIL commissioning and instrument-guided proof testing • With Heartbeat Technology, the device health can be verified while the process is running, increasing plant availability • Simple device status indication Display changes from green to red when diagnostic messages occur
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Measuring principle:
The differential pressure transmitter measures by detecting the pressure difference between two pressure points. The device is connected to different measurement points of the process system through two pressure ports: the high-pressure side (HP) and the low-pressure side (LP). When gas or liquid media act on both sides, the generated differential pressure (ΔP) causes the internal sensing element, such as a metal diaphragm, to deform mechanically. This deformation is converted into an electrical signal through capacitive sensing or resistive strain gauge technology. The signal is then processed by the signal conditioning circuit, including amplification, linearization compensation, and temperature correction. Finally, the transmitter outputs an industrial standard 4–20 mA analog signal or digital signals such as the HART protocol.
Product positioning:
Foundamental
Using scenario:
PMD78B is one of the members of the new generation Deltabar transmitter family. The transmitter features a rugged and durable design with secure Bluetooth connectivity, allowing remote operation via a mobile device with the dedicated app installed. It supports condition-based maintenance, improving plant availability. The software is also easy to use. Intuitive operation guides help users complete instrument configuration, functional safety tests, and verification tests step by step. Heartbeat Technology provides self-verification and self-monitoring functions, enabling detection of process abnormalities such as blocked impulse lines.
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Jiangsu Pinyi instrument Co., Ltd.
Shanghai Ruiyingda measurement and control technology Co., Ltd.
We specialize in instruments and process control.
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