When it comes to streamlining your residential or commercial electrical power, a differential pressure sensor has a significant role to play. As the name also suggests, Siemens differential pressure sensor measures the difference in pressure at two points and offers a comparative measurement between the two. Various companies manufacture these pressure sensors and are used in a variety of industries.
Let us understand how differential pressure sensor work.
When two pressures are to be measured, they are applied to opposite sides of a single diaphragm. The deflection of the diaphragm, either negative or positive depending upon the resting state, shall determine the pressure difference. There are some industrial differential sensors that use two separate absolute sensors with other electronics to calculate and provide the difference in the pressure.
Yet another way to achieve a differential pressure measurement is by using two absolute pressure sensors and then calculating the difference on any industrial control system. This way is useful in situations where two different types of sensors are required because of either the medium being measured or the atmosphere of such measurement.
Where are these differential pressure sensors located?
These pressure sensors can be placed at several locations, such as:
- Flow sensing, which is used in conjunction with the venturi effect to measure the electrical flow. Here, the differential pressure is measured between two segments of a venturi tube having different aperture. The pressure difference between the two segments is directly proportional to the flow rate passing through the venturi tube.
- Depth sensing, which is used to measure the depth of any submerged body. It is primarily used in marine vessels, such as submarine.
- Leak testing, which is a kind of pressure sensor used to sense a drop of pressure due to a system leak. It is done by comparing it to a known leak with different pressure.
Identifying a faulty sensor
The most common issue found in a differential sensor is the damage caused to the diaphragm. It causes the sensor to be deformed or also lose the ability to flex and the required response to any change in the pressure.
Another issue we have witnessed with various differential pressure sensors is the damage to the port area of the sensor. It could be due to accumulation of debris or contamination lodging in the port that restricts the correct flow of fluid into the sensor.
That said, we would like you to know the different types of differential sensors available in the market. Commonly, you will find resistive sensors, capacitive sensors, optical sensors, piezoelectric sensor, and MEMS.
To learn more about Siemens differential sensors, reach out to us. We will be glad to assist you.
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