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Pressure Sensors For Different Media Types

Pressure sensors for viscous liquids usually measure pressure in one of two ways: absolute or gauge. Absolute pressure is measured relative to a particular value, such as zero or atmospheric pressure at sea level. With this method, the reading is always the same, regardless of where the unit is located.

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Description

Pressure sensors for different media types

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:

Sensors for viscous fluids will typically be specified using features such as:

Pressure range (for example, 0–0.4 bar)
Measurement type (absolute or gauge; see above)
Response time
Output signal,
Accuracy (expressed as a percentage)
Installation type
Housing and diaphragm material
Process connection
Cable length and type

Another important specification is the type of seal used on parts of the sensor exposed to the fluid, particularly if the media is volatile or corrosive.

Sensors will have an operational temperature range, which is vital to consider for media that are subject to intense heat, such as molten plastic or bitumen. Some sensors can be supplied with cooling elements that protect the electronics from the temperature of the media, extending their usable temperature range. For example, some sensors may feature an integral oil-filled capillary that transfers pressure from the diaphragm to the piezoresistor, putting extra distance between the media and the electronics within the sensor.

Some sensors for viscous fluids have nose cones that protect the sensor in use, but can be removed for cleaning. They may also include sealed cable exits to protect the sensor from cleaning processes used for surrounding areas, or from flooding in use.

Sensors for viscous fluids that are suitable for use in hazardous environments may be certified under a standard such as ATEX 95 (for Europe) or IECEx 02 (worldwide). Under EU law, ATEX 95 is required for all electrical and non-electrical equipment that’s used in hazardous environments, while IECEx 02 is intended only for electrical equipment in hazardous environments. Hazardous environments include those involving dust or flammable materials, including bio-gas that may be present along with viscous fluids such as sewage.

Sensors may be available with submersible cable connections, protecting them from spillage or allowing them to be continuously submerged in liquid when in use.

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