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Pressure Transmitters

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About Pressure Transmitters

Pressure transmitters translate low-level electrical outputs from pressure sensing devices to higher-level signals that are suitable for transmission and processing. They use many different sensing technologies and can measure the pressure of liquids and/or gases. Mechanical deflection devices such as diaphragms, Bourdon tubes or bellows consist of an elastic or flexible element that is deflected mechanically by a change in pressure. Devices that use sealed pistons or cylinders are also available. Strain gauges are often bonded to a larger structure that deforms as pressure changes. Piezoresistive devices sense shifts of electrical charges within a resistor. Piezoelectric pressure transmitters measure dynamic and quasi-static pressures. Their common modes of operation are charge mode, which generates a high-impedance charge output; and voltage mode, which uses an amplifier to convert the high-impedance charge into a low-impedance output voltage. Thin film devices consist of an extremely thin layer of material, usually titanium nitride or polysilicon, deposited on a substrate. Pressure transmitters that use microelectromechanical systems (MEMS), variable capacitance, and vibrating elements are also available. 


Products & Services Related to Pressure Transmitters

Analog Pressure Gauges
Analog pressure gauges are mechanical devices that include bellows, Bourdon tubes, capsule elements and diaphragm element gauges.
Digital Pressure Gauges
Digital pressure gauges use electronic components to convert applied pressure into usable signals. The gauge readout has a digital numerical display.
Pressure Gauges
Pressure gauges are used for a variety of industrial and application-specific pressure monitoring applications.  Uses include visual monitoring of air and gas pressure for compressors, vacuum equipment, process lines and specialty tank applications such as medical gas cylinders and fire extinguishers.
Pressure Sensors
Pressure sensors include all sensors, transducers and elements that produce an electrical signal proportional to pressure or changes in pressure.
Pressure Switches
Pressure switches are actuated by a change in the pressure of a liquid or gas.  They activate electromechanical or solid-state switches upon reaching a specific pressure level.
Vacuum Gauges and Instruments
Vacuum gauges are devices for measuring vacuum or sub-atmospheric pressures.
Vacuum Sensors
Vacuum sensors are devices for measuring vacuum or sub-atmospheric pressures.

Engineering Web: Pressure Transmitters - Machine Design

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Differential-Pressure Transmitters May 10, 2007 Differential-pressure (DP) transmitters are designed for applications having high line pressures.
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Pressure Transmitters July 7, 2005 Staff
New Product: Pressure Switches and Transmitters | Machine...
Housed in stainless steel, PTD Series pressure and vacuum transmitters convert pressure into an analog output signal.
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