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Pressure Transmitter For Liquid And Gas

Many normal pressure sensors are suitable for use with a wide range of liquids and gases, including water and air. However, more viscous liquids call for specially designed sensors. Examples of viscous media include melted plastics, paper pulp, bitumen, rubber, asphalt, crude oil, sewage, sludge, paint, sealants and adhesives, as well as certain foods (such as ice cream) and pharmaceutical products.

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Description

Pressure transmitter for liquid and gas

Packing: carton box. box size depended on the quantity. please contact us for packing details before placking order.

Nearest port: Ningbo or Shanghai.

Lead time: decided by the qty.

Product descriptions:

Viscous liquid pressure sensors are transducers, generating an electrical signal in proportion to the pressure they measure. This allows pressure to be monitored by electronic devices such as microprocessors, programmable controllers, or computers.

Pressure sensors for viscous liquids usually feature a physical diaphragm, often made of stainless steel or ceramic, which bends as pressure is applied. The diaphragm is a strain gauge, which increases in electrical resistance as more force is applied to it – in this case, from the pressure of the viscous liquid on the sensor. This resistance is used to modify the output voltage of the sensor.

Standard liquid pressure sensors often feature a relatively narrow vent that allows liquid to enter the unit and press on the diaphragm. However, this is impractical when working with more viscous fluids that have lower flow rates and tend to solidify or coagulate, particularly when a process is halted and the temperature falls and/or the media dries out. The sensor may get clogged up and take some time to begin working properly again when the process is restarted.

To address this, pressure sensors for viscous fluids usually have flatter, more open designs, perhaps with a flush diaphragm, that allow the fluid to move freely across the face of the sensor. They may also be designed so that all surfaces that come into contact with the fluid are accessible, to allow for easy cleaning and the removal of built-up residue (such as in the example to the right).

Many pressure sensors for viscous media have casings made from stainless steel, giving them strong resistance to harsh chemicals such as those found in sewage and sludge.

product-700-700