What is a Pressure Transmitter?
A pressure transmitter is a mechanical device that converts pressure or expansive force (produced by liquid or gaseous samples) into an electrical output. It makes use of a transducer to convert the physical variable into an electrical signal. Here a question arises, are pressure transmitters and pressure transducers the same?
There is a lot of confusion around the terms “pressure transmitter” and “pressure transducer.” Let’s find out the difference in this blog. Additionally, you will learn how pressure transmitters function and some of their applications.
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Pressure Transmitter vs. Pressure Transducer
Any transducer’s primary use is to monitor physical variables like pressure, load, and force and then transform them into electrical signals. But a transmitter can also transform physical variables into an electrical signal. Additionally, before the signal is sent to the receiver, it is amplified and modified.
Similarly, in the case of a pressure transducer, pressure is converted into electrical signals. And in the case of a pressure transmitter, the pressure is converted into an electrical signal and the signal is sent to the receiver after amplification and modification.
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How Does It Work?
In simpler words, a pressure transmitter measures the pressure and converts it into an analog electrical signal.It isprincipally made up of three components, viz.
- Pressure sensor
- Measuring circuit
- Process connection
A pressure transmitter measuring system is composed of three elements, i.e.
- Pressure guiding tube
- Central measuring diaphragm
- Isolating diaphragm (containing silicone oil)
The diaphragm is forced by the pressure on the pressure transmitter; depending on the pressure, it either expands or contracts, changing the resistance value. At last, the pressure difference is converted into analog electrical signals and sent to the receiver.
What is a Pressure Transmitter used for?
We can see use cases of pressure transmitters in different industries. In the oil exploration sector, these are used to measure the difference in pressure values between the interior and exterior pressure-sensitive equipment.
Pressure transmitters can withstand any harsh environment with long service life. There is a very low maintenance cost associated with them. In the Maritime sector, pressure transmitters are used widely because of their higher hindrance and efficiency.
Pressure transmitters are useful for manufacturing sector, energy conservation industries as well as the industries where the involvement of liquid or gasses is significantly high.
Conclusion
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Key Takeaways
- A pressure transmitter is a mechanical device that converts pressure or expansive force (produced by liquid or gaseous samples) into an electrical output.
- There is a lot of confusion around the terms “pressure transmitter” and “pressure transducer.”
- In the case of a pressure transducer, pressure is converted into electrical signals. But in the case of a transmitter, along with conversion the signal is amplified and modified.
- A pressure transmitter is principally made up of three components, viz. Pressure sensor, Measuring circuit, and Process connection.
- Pressure transmitters are useful for various manufacturing, energy conservation industries as well as the industries where the involvement of liquid or gasses is significantly high.
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