Pressure sensor is sensitive for extended temperatures

A ceramic port is included in the design of the Bourns Model BPS140 pressure sensor to enhance its compatibility with certain harsh media, explains the company.

The pressure sensor is added to Bourns’environmental sensors. It is based on microelectromechanical systems (MEMS) technology, which provides extremely accurate condition readings in a miniature package size. Designed to deliver high sensitivity/accuracy and long-term reliability, the BPS140 pressure sensors offer extended temperature capability and certain harsh media compatibility.

Model BPS140 is robust with a structure that is capable of handling high pressure ranges (15 to 500 PSI) even at high temperatures. This rugged structure is combined with rear pressure measurement that minimises the number of media-sensitive wetted materials. The purpose of this sensing design is to ensure the measured media only touches the back of the measurement element, explains Bourns.

The structure enhances sensor accuracy because all electronic components and other sensitive surfaces are isolated from the media, explains Bourns. In addition, by reducing the number of wetted materials,  the media sensitivity of the sensor is effectively decreased, adds the company.

Bourns’ latest sensor family offers stable performance over the product’s lifespan, and the ability to work with a wide range of pressures offering a total error band of 2.5 per cent full scale over a temperature range of –40 to +150 degrees C (six sigma process), and a lifetime drift of 0.5 per cent full scale. These features make the BPS140 pressure sensor particularly suitable for a range of industrial, energy, heavy equipment, building and home control and medium/low risk medical designs.

Bourns¨ Model BPS140 pressure sensors are available now, and are RoHS** compliant. Bourns also offers port configuration and calibration customisation.

Bourns manufactures and supplies position and speed sensors, circuit protection solutions, magnetic components, microelectronic modules, panel controls and resistive products.

The company is headquartered in Riverside, California, USA, and serves a broad range of markets, including automotive, industrial, consumer, communications, medical (low/medium risk), audio and various other

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