PPT2-0002GGK5VE

Series:	PPT2
Part Status:	Active
Pressure Type:	Gauge
Operating Pressure:	2 PSI (13.79 kPa)
Output Type:	Analog, RS-485
Output:	0 V ~ 5 V
Accuracy:	±0.075%
Voltage - Supply:	6 V ~ 34 V
Port Size:	Female - 1/8" (3.18mm) Swagelok™, Male - 1/8" (3.18mm) Swagelok™
Port Style:	Threaded
Features:	--
Termination Style:	Connector
Maximum Pressure:	600 PSI (4136.85 kPa)
Operating Temperature:	-55°C ~ 110°C
Package / Case:	Module Cube
Supplier Device Package:	--

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Pressure Sensors, Transducers

Pressure sensor/transducers, such as the PPT2-0002GGK5VE, are widely used in a variety of industrial, medical, and environmental applications. They are primarily used to measure pressure, but they can also be used for other applications, such as flow, level, temperature, and strain measurement. In this article, we will primarily be focusing on pressure sensing applications and the working principles behind these devices. Pressure transducers are typically used in two different ways: absolute and relative. In absolute pressure applications, the reference pressure is taken from the absolute ambient atmospheric pressure. This is measured using a reference material such as oil, mercury, or liquid compensator. The output of the absolute pressure transducer is generally expressed in a unit like bar, PSI, mbar, and so forth. In relative pressure applications, the reference pressure is measured relative to the existing system pressure. These transducers may be used for such tasks as determining changes in pressure in pipes, tanks, etc. They most commonly output analog signals which can be displayed or sent to a control system. As far as the working principles behind pressure transducers are concerned, the two primary types are: strain gauge and capacitance. Strain gauge pressure transducers work by using a strain gauge bridge to convert pressure into a usable electrical output. In a strain gauge bridge, strain gauges are connected in a Wheatstone bridge configuration. As pressure is applied to the bridge, the strain gauges experience resistance changes. These resistance changes cause the bridge output to be unbalanced and can be measured using an ammeter. The electrical signal generated can then be converted to an analog value which is proportional to the applied pressure. Capacitance pressure transducers use capacitors to convert pressure into a usable electrical output. Two shaped plates serve as the capacitor electrodes, and are positioned facing each other. An elastomeric diaphragm is placed between the two electrodes. The diaphragm responds to the pressure and moves, changing the gap distance between the two plates and therefore altering the capacitance value. This change in capacitance value can be measured and converted to an analog value which is proportional to the applied pressure. To sum up, pressure transducers such as the PPT2-0002GGK5VE are widely used for a variety of applications. There are two main types of pressure transducers - absolute and relative - and they most commonly output analog signals. The working principles behind the two main types of pressure transducers are strain gauge and capacitance. Together, these types of transducers form an important part of modern automated systems.

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