Product category:
Pressure sensors
News Release from: Alps Electric (UK) | Subject: HSPC capacitance type pressure sensor
Edited by the Engineeringtalk Editorial
Team on 07 September 2007
Compact pressure sensors detect small
changes
Alps Electric's thin-walled capacitance-type pressure sensor measures 4.8 x 4.8 x 1.8mm.
Alps Electric has released the HSPC capacitance type pressure sensor to detect absolute pressure The sensor can be used to detect, for example, air pressure in tires, air pressure and blood pressure
This article was originally published on Engineeringtalk on 5 Feb 2007 at 8.00am (UK)
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Installation of a tire pressure monitoring system (TPMS), which enhances safety by monitoring the air pressure in a car's tires, is being made compulsory in the United States and becoming increasingly widespread throughout the world.
Battery-driven, TPMS components are required to feature low current consumption.
At the same time, components must be compact to allow for installation inside the tire.
As with TPMS, devices for measuring blood, air and other pressures are becoming energy-efficient, with low current consumption, and small enough to be easily portable.
Under these circumstances, demand is increasing for highly sensitive devices that can detect the minutest changes in blood and air pressure.
This product detects air, blood and other pressures by means of changes in capacitance.
Pressure is detected when pressure changes cause the membrane on the moveable electrodes to flex.
The capacitance between the fixed electrodes changes and the degree of this change is converted into an electrical signal.
The capacitance-type pressure sensor is generally characterised by high sensitivity and low current consumption.
Pressure detection systems that use this product will therefore reduce their current consumption to a uA level, contributing to the general trend for set products to use less current.
Alps Electric's thin-walled capacitance-type pressure sensor measures 4.8 x 4.8 x 1.8mm.
The product also minimises the influence of temperature changes on pressure detection, and due to the ability of the ceramic packaging to withstand changes in temperature, its operation is possible in a wide range of operating temperatures.
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