FST800 - 501 pressure transmitter applied in the refrigeration & compressor industry is a silicon MEMS strain gauge sensor which is glass 

bonded to a stainless steel diaphragm.It avoids influences on product caused by  temperature, humidity, mechanical fatigue and medium,  thus 

to improve its longterm stability in the industrial environment. Its pressure chamber is made of imported 17-4PH stainless steel in an 

integrated way without welding seams or O-rings, free of leakage troubles. Digital circuits capable of strong RFI & EMI resistance and 

automatic temperature compensation are installed inside the transmitter and the transmitter is featured with the strong interference 

resistance, wide temperature compensation scope and flexible & various output forms, etc. The series products provide several optional 

pressure connectors and electric output forms for customers.

Product Features

?Advance Microfused Silicon Strain Gauge, whole-designed elastomer, free of leakage trouble

?Advanced digital temperature compensation and wide working temperature scope

?Excellent resistance against impact, overload, shock and erosion

?Highly-efficient lighting absorption and strong RFI & EMI resistance

?High accuracy, high frequency response and longterm stability

Applicable Scope 

?Refrigeration and air compressor measuring and control

?Air-conditioner production line testing

Technical Indexes:

Pressure Type: gauge pressure  absolute pressure  sealed pressure

Pressure Range(bar):1 1.6 2.5 4 6 10 16 25 40 60 100 160 200 250 300 400 

Pressure Range(psi):15 30 50 75 100 200 300 500 750 1000 1500 3000 5000

Technical Index

Signal Output :4~20mA    0.5~4.5VDC  0~5VDC      0~10VDC

Signal Line Specification:2wire       3wire        3wire         3wire

Supply Voltage :9~30VDC   5VDC       9~30VDC     15~30VDC

Accuracy:±0.3%FS  ±0.5%FS

Zero Drift:±0.02%FS/°C

Thermal Sensitivity Shift:±0.02%FS/°C

Longterm Stability (1 Year):±0.1%FS

Frequency Response (-3dB):3.2kHz

Compensated Temperature:-20~+85°C

Working Temperature:-40~+125°C

Storage Temperature:-40~+125°C

Overload Pressure:300% FS

Burst Pressure:500% FS

Mechanical Vibration:±20g

Impact (11ms):100g

Environmental Protection:IP65

Wetted Parts:17-4PH

Electromagnetic compatibility(EMC):EN61000-6

Certificates:CE   RoHS

Hunan Firstrate Sensor Co., Ltd.

Tel: 0086-731-86171990  Fax: 0086-731-86205777

firstsensor(at)foxmail(dot)com