Types of Pressure Sensors: Finding Your Perfect Match

Following our previous in-depth exploration of pressure sensors in the comprehensive guide "Understanding Pressure Sensors: A Complete Guide," JLCMC is excited to continue our journey with you today as we delve further into understanding the different types of pressure sensors that best fit your needs.

Absolute Pressure Sensors

Absolute pressure sensors measure pressure from zero—like comparing how deep you are underwater to being at the surface. At sea level, the pressure is about 101.325 kPa, which is the starting point for these sensors.

Gauge Pressure Sensors

These pressure sensors measure the pressure at a specific location relative to atmospheric pressure. A tire pressure gauge is an example; when the tire pressure gauge reads 0 PSI, it indicates that the pressure inside the tire is equal to the atmospheric pressure, which is 14.7 PSI.

Vacuum Pressure Sensors

Vacuum pressure sensors detect "low pressure" areas, like a vacuum. They measure pressure lower than the air pressure at sea level, which is about 14.7 PSI.

Differential Pressure Transmitters

Differential pressure transmitters measure the pressure difference between two points, like the squeeze across a filter. They also track how quickly fluid moves or how high the water level is in a tank.

Sealed Pressure Sensors

Similar to gauge pressure sensors, these instruments undergo special calibration, and they measure pressure relative to the pressure at sea level.

Based on their structure and operating principles, they can be categorized into strain-based, piezoresistive, capacitive, and piezoelectric sensors, among others. Additionally, optoelectronic, fiber optic and ultrasonic pressure sensors are also used.

Strain Gauge Pressure Sensors

Strain gauge pressure sensors measure pressure by detecting the bending of a stretchy component. It's similar to using a flexible ruler that changes its electrical resistance when bent or squeezed, helping us know the pressure applied.

Piezoresistive Pressure Sensors

Piezoresistive pressure sensors are like super-sensitive silicon chips. They directly tell us when pressure is applied by changing their electrical resistance, giving a clear and direct pressure reading.

Capacitive Pressure Sensors

Capacitive pressure sensors work like stretchy electrodes. When pressure pushes on them, their ability to store electricity changes, they come in two kinds: ones that measure one side's pressure and ones that compare pressures on both sides.

In short, picking the right pressure sensors is like fitting pieces into a puzzle. The types we've covered—absolute, gauge, vacuum, differential, and sealed pressure sensors—each has its own specific uses. Become a JLCMC customer now to select the perfect pressure sensor for your needs while enjoying exclusive discounts on your next purchase. Simply register by clicking the image below to claim your offer immediately.