Gauge Pressure Transmitter introduction

Gauge pressure transmitters are used in reference to the atmospheric pressure. If the gauge pressure is found to be higher than the outside pressure, then it is referred to as positive pressure. However, if the gauge pressure is lower than the atmospheric pressure, then it is known as negative pressure.

Gauge pressure transmitters feature a single pressure port. The transmitter may feature a measuring cell, seal diaphragm, and filling liquid. Ambient pressure is the main input variable, which is transferred to the pressure sensor through the seal diaphragm as well as the filling liquid. A gauge pressure transmitter allows ambient air pressure to be exposed to the negative side of the diaphragm. This enables an accurate measurement in reference to the ambient pressure.

Gauge Pressure Transmitter Feature

With the piezoresistive pressure sensor technology, it gives outstanding linearity, repeatability and hysteresis. While with the robust circuit design, it features a good resistance of EMI, and protection for instantaneous high pressure and surge interfere of thunder, noise and sharp pulse, etc which make it work reliably and stably in the rough environment.

• Reliable performance, easy application

• Short protection and reverse polarity protection

• Measure gauge, absolute and sealed gauge

• Intrinsic safe version, conforming to Standard Exia Ⅱ CT6Ga of GB3836.4

• Exd product conforms to Standard GB3836.2, and Exd certificate is approved.

• Ship-use product conforming to CCS Rules of Classification of Sea-going Steel Ships (2018)

• CE, RoHS and ATEX approved

Gauge Pressure Transmitter specification

Gauge pressure (GP) transmitter compares a process pressure against local ambient air pressure. Gauge pressure transmitters have ports to sample the ambient air pressure in real-time. Today’s highly accurate gauge pressure transmitters can be affected by fluctuations in the local ambient pressure. Measurements above the ambient air pressure are represented as a positive number, while negative number represents measurements below ambient. A gauge pressure measurement is indicated by the letter ‘g’ following the unit of measure of the reading (i.e., inH₂O(g) or psig).

Specification

Pressure Type	Gauge pressure/ absolute pressure /sealing pressure
Power Supply	12VDC 24VDC 12-36VDC
Signal Output	4-20mA 0-20mA 0-5V 1-5V 0-10V RS485
Zero Drift	±0.03%FS℃
Accuracy	±0.5%FS℃,0.3%FS optional
Thermal Sensitivity Drift	±0.03%FS℃
Long Term Stability	≤0.2%FS℃ one year
Frequency Response(-3dB)	5kHz~650kH
Ingress Protection	IP65
Pressure Connection	G1/4, G1/2,1/2NPT,1/4NPT, M20*1.5etc.(optional)
Measure Medium	Gas, water, oil etc. (non-explosion-proof area)
Electrical Connections	DIN connector type, M12 connector, cable connector type
Time Response	<10ms
Weight	Min,400g(depending on model)
Housing material	304/316L stainless steel
Fill Fluid	Silicon oil

-Manuals

Gauge Pressure Transmitter

-Data sheet

Gauge Pressure Transmitter application

The series' product is applied extensively in the professions, such as the industry process control, petroleum, chemical engineering and metallurgy etc. Carry the distance delivers and can adopt electric current exportation method.

Open tank level, Line pressure, and Blanket pressure in a tank.

pressure transmitter application