Brief description SH2188 transmitter is consisted of piezoresistive sensor and signal conversion
module, sensor core is monocrystalline wafer, when monocrystalline wafer is
pressed, its resistivity will change, and diffuse to four resistances on the wafer,
form bridge, under constant current condition output voltage signal which is in
direct relation to pressure signal, and signal conversion module will convert
sensor voltage signal to 4~20mA DC standard signal.
SH2188 Pressure transmitter measures pressure and liquid level of fluid (liquid,
gas, vapor), and converts measured signal to 4~20mA DC standard signal. This
signal can be input signal of indication, record and regulator.
SH2188 is small size, light weight, high accuracy and low price, can be matched with field-indication meter, with zero displacement and range expansion functions, etc. Explosion-proof and intrinsic safety are optional, meet up with industrial requirements.
Parameters Main technical index
Application: liquid, gas and vapor
Range：2：0-0.02MPa ～ 0.1MPa
3：0-0.1MPa ～ 0.5MPa
4：0-0.2MPa ～ 1MPa
5：0-1MPa ～ 5MPa
6：0-2MPa ～ 10MPa
7：0-10MPa ～ 50MPa
Output：4 ～ 20mA DC
Power supply：12 ～ 36V DC
Output indication accuracy：±2％
Displacement: transmitter can be zero positive displacement of 50% calibration range, but calibration range upper limit should not be over max upper limit, can not be negative displacement.
Over pressure: twice of range limit (for range 0-50MPa, it's 1.5 times of range limit)
Working temperature：-25℃ ～ +80℃
Storage temperature：-40℃ ～ -120℃
Humidity：0 ～ 100％ relative humidity
Start time：2 seconds no need of preheating
Accuracy：±0.20％ of range, including linearity, difference, repeatability
Temperature influence： zero temperature error is 0.75％/55℃ of max range
Comprehensive temperature error is 1.1％/55℃of max range
Vibration influence：at any direction, vibration error is 0.25％/g of max range when vibration
fluency is 200HZ
Time response：less than 0.2s
Isolated diaphragm：316SST
Sensor body：1Cr18Ni9Ti
Filling oil：silicon oil
Flow connector：optional
Electric connection：Electronic box connection wiring hole is 1/2-14NPT taper tube thread hole, electric connection terminal strip is at side of Electronic box connection end. Weight: about 1kg.