DIFFERENTIAL PRESSURE

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FEATURES

Universal for flow, level or filter 

Large Temperature Range

Differential Pressure Measurement

Continuous level, flow and differential pressure measurement

Differential pressure transmitters with piezoresistive pressure sensors and welded metallic membrane or electronic dp or diaphragm seals are used mostly in the process industry. Deltabar offers continuous level measurement in liquids as well as volume or mass flow measurement using primary elements. It is also possible to do filter monitoring with the differential pressure transmitter.

Besides the devices with silicon or diaphragm seal for differential pressure, level, dp flow measurement, Deltabar electronic dp is a differential pressure system combining two sensor modules and one transmitter. In level applications, the high-pressure sensor (HP) measures the hydrostatic pressure. The low-pressure sensor (LP) measures the head pressure. The level or differential pressure is calculated in the transmitter using these two digital values.

Differential pressure measurement: Measuring Principle

Silicon cell: The operating pressure deflects the process isolating diaphragm and a fill fluid transfers the pressure to a resistance bridge (semiconductor technology). The pressure-dependent change in the bridge output voltage is measured and evaluated.

 

Diaphragm seal: The operating pressure acts on the process isolating diaphragm of the diaphragm seal and is transferred to the process isolating diaphragm of the sensor by a fill fluid.

Benefits

  • Universal dp transmitter for flow, level or filter applications

  • With diaphragm seal process temperatures from -70 up to +400°C (-94 to +752°F)

  • The electronic differential pressure system eliminates traditional mechanical issues resulting in greater process availability and reliability. Also, safety risks are minimized with the electronic dp system architecture and design

Differential Pressure Measuring

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