P51-100-S-N-M12-4.5OV

Series:	MediaSensor™
Part Status:	Obsolete
Pressure Type:	Sealed Gauge
Operating Pressure:	100 PSI (689.48 kPa)
Output Type:	Analog Voltage
Output:	0.5 V ~ 4.5 V
Accuracy:	±0.5%
Voltage - Supply:	5V
Port Size:	--
Port Style:	Threaded
Features:	Amplified Output, Temperature Compensated
Termination Style:	M12, 4 Pin
Maximum Pressure:	--
Operating Temperature:	-40°C ~ 105°C
Package / Case:	Cylinder
Supplier Device Package:	--

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Pressure Sensors, Transducers

Pressure sensors, transducers, or sealed pressure transducers, are devices that can be used to measure both positive and negative pressure relative to a reference pressure. They are most commonly used in industrial applications, such as measuring vacuum pressure in a compressed air system, or measuring the pressure of a gas or liquid in a pipeline. The P51-100-S-N-M12-4.5OV pressure sensors come in a wide variety of sizes, materials, and operating ranges.

Fluid Pressure Measuring Principles

A pressure sensor typically consists of a sensing element, a diaphragm, an electronic circuit, and signal output or power supply. The sensing element is designed to respond to the different pressure ranges in order to accurately convert it into an electrical signal. This signal is then processed by the electronic circuit, which will convert it into a measurable output. There are four main types of pressure sensing principles used to measure the pressure of a fluid; these are piezoresistive stress, diaphragm deflection, thermal expansion, and capacitance.

Piezoresistive Stress

Piezoresistive stress utilizes the mechanical force of pressure on a semiconductor material. The applied pressure to the semiconductor causes it to resist or accelerate the flow of current. The current is then used to measure the applied pressure.

Diaphragm Deflection

Diaphragm deflection is the most common type of pressure sensing principle used for measuring vacuum pressures below atmospheric pressure. It uses a diaphragm that deflects under the pressure and is sensed using strain gauges or other means of pressure sensing.

Thermal Expansion

Thermal expansion is used to measure pressure over very wide ranges from very low to very high pressures. It utilizes an element consisting of two different types of metal which expand and contract when heated or cooled. The two metals are connected to a bellow that deflects in response to the pressure, and the output pressure is measured using a strain gauge.

Capacitance

Capacitance sensors measure the variation of capacity when pressure is applied. This is done by using two capacitive plates, one that is static and one that is dynamic, which forms a capacitor. When the pressure applied to the dynamic plate changes, the capacity of the capacitor also changes and this change is detected and used to measure the applied pressure.

P51-100-S-N-M12-4.5OV Application Field and Working Principle

The P51-100-S-N-M12-4.5OV pressure sensor is a diaphragm deflection device that combines a precision capacitor with two strain gauges. The pressure is applied to a sealed cavity, and the strain gauges on the diaphragm measure the deflection of the diaphragm due to the pressure. The output signal is proportional to the pressure applied and can be used to measure vacuum, gauge, and absolute pressures. This type of pressure sensor is ideal for use in applications such as laboratory pressure measurement, or damping measurements.

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