Absolute Pressure Transmitter

 Absolute Pressure Transmitter

This transmitter takes vacuum pressure or reference vacuum pressure and then measures process pressure. vacuum pressure we can say zero pressure. Absolute pressure is the sum of Gauge pressure and Atmospheric pressure. It is easy to explain with the help of the below equation.

                                                           Pabs=Pg+Patm

                                           

where  Pabs is absolute pressure, Pg is pressure gauge and Patm is atmospheric pressure

In the figure shown above the pressure strikes on the sensor diaphragm, then the pressure is measured relative to a perfect vacuum. It is important things any pressure transmitter takes measurements against reference pressure but Absolute pressure transmitters have absolute zero as a reference. The absolute pressure transmitter is built around a sensor. One side of the sensor is revealed to vacuum created when it was made. The other side receives pressure from gas or liquid. The output signal from the sensor goes to the electronic unit that calculates the absolute pressure. 

The application of Absolute pressure transmitter

• The absolute pressure transmitter is widely used in navigation systems.
• Nowadays, these transmitters are also contributing to the weather forecasting field for barometric measurements.
• The absolute pressure transmitter is mostly used in oil and gas industries, laboratory research, and pharmaceutical production.
                                  

The technical benefits of Absolute pressure transmitter

• High accuracy and reliability
• Long term stability
• HART communication protocols and environmental echo friendly.

FAQ

What happens when absolute pressure 0?

The pressure of a perfect vacuum, an empty or space which has no matter at all is known as absolute zero pressure. Actually it is not possible, it is very hard to reach the situation of perfect vacuum and also maintain the same for time being.

What instrument is absolute pressure?

 The manometer is an instrument used for measuring absolute pressure. 

 What is the range of absolute pressure transmitter?

The absolute pressure transmitter ranges covered are 0-100mbar up to 0-1000bar.

How does an absolute pressure transmitter work?

The absolute pressure transmitter is built around a sensor. One side of the sensor is sealed chamber to vacuum created when it was made. The other side receives pressure from gas or liquid. The output signal from the sensor goes to the electronic unit that calculates the absolute pressure.

Where is absolute pressure transmitter used?

Absolute pressure transmitters are typically used in gas sensing arrays for liquid gas processing, containment, and transport applications. Among the most innovative uses of absolute pressure transmitters is process control and monitoring of UHV manufacturing environments.