Pressure Transducer

What Is It?

A pressure transducer is a device which converts an applied pressure into a measurable electrical signal which is linear and proportional to the applied pressure. A pressure transducer consists of two main parts: an elastic material which will deform when exposed to a pressurized medium and an electrical device which detects the deformation and converts it into a usable electrical signal.

Three different types of electrical device can be attached to this elastic material to make pressure transducers. These include resistive, capacitive and inductive types.

• Resistive pressure transducers uses strain gauges, which are bonded the deformable material. Any change in the deformation causes the change in the electrical resistance of each strain gauge which can be measured by a Wheatstone bridge.
• In the capacitance type pressure transducers, change in pressure is measured change in capacitance between two capacitance plates. One plate bonded to the deformable side of the elastic material while other one is bonded to the unpressurized surface.
• In inductive pressure transducer the deformation of the elastic material is used to provide linear movement of a ferromagnetic core. This linear movement will vary the induced AC current.

The above pressure transducer 243222 is quite hard to dig in Pakistan and Techno Control Corporation have supported companies like Kansai Paint Pakistan with such instrument.