Pressure transmitter is a device that converts pressure into pneumatic or electric signals. It converts the physical pressure parameters of gas, liquid, etc. sensed by the pressure measuring element sensor into standard electrical signals (such as 4~20mADC, etc.) to provide secondary instruments such as indicator alarms, recorders, regulators, etc. for measurement, indication and process regulation.
What is the working principle of pressure transmitter?
The working principle of the pressure transmitter is based on the negative feedback principle. It is mainly composed of a measuring part, an amplifier and a feedback part. The measuring part is used to detect the measured variable and convert it into an input signal (such as voltage, current, displacement, etc.) that can be accepted by the amplifier. The feedback part converts the output signal of the transmitter into a feedback signal and then sends it back to the input end. The algebraic sum of the input signal and the zeroing signal is compared with the feedback signal, and the difference is sent to the amplifier for amplification and converted into a standard output signal.
Conversion process
The pressure transmitter converts the physical pressure parameters of gas, liquid, etc. sensed by the pressure measuring element sensor into a standard electrical signal (such as 4~20mA DC) to supply secondary instruments such as indicator alarms, recorders, and regulators for measurement, indication and process adjustment. This conversion process enables pressure transmitters to be widely used in industrial automation control systems to achieve remote monitoring and adjustment.
How accurate is the Rosemount pressure transmitter?
Rosemount pressure transmitters have an accuracy of ±0.15%FS and a reference accuracy of ±0.075%FS. For example, the Rosemount 3051tg has an overall performance of ±0.15%FS and an accuracy of ±0.075%FS.
Measuring range
Rosemount pressure transmitters have a wide range of measuring ranges, for example:
0-8 to 0-800psig (0-55 to 0-5516kPa)
0-40 to 0-400psig (0-276 to 0-27579kPa)
0-2000 to 0-10000psig (0-13800 to -68900kPa).
In addition, the Rosemount 3051GP pressure transmitter has a measuring range from 0–1.5psi to 0–4000psi (0–10 to –27580kPa) with a reference accuracy of 0.075%.
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