HOFFER-HFDPT SERIES PRESSURE/DIFFERENT PRESSURE TRANSMITTER

HFDPT is an intelligent differential pressure transmitter which adopts advanced microprocessor technology and digital communication technology.

The HFDPT intelligent pressure transmitter can be used for differential pressure, gauge pressure or absolute pressure measurement. It uses the advanced capacitive type

Sensor technology (piezoresistive sensor for absolute pressure model), with self-diagnosis, field parameter adjustment, automatic adjustment

Zero and a variety of widely used communication protocols at industry leading prices. HFDPT intelligent pressure transmitter can make

Connected with a conventional flange or any other industry standard process for pressure, flow and level applications. HFDPT

Smart pressure transmitters are available in a variety of configurations, making them suitable for almost any application.

 

2. Technical features:

♦ High accuracy, small temperature drift

♦100:1 crazy down

♦ Safety lock - parameter description

♦ Advanced diagnostic function

♦ big range

♦ Software Compensation

♦ 316SS, tantalum and other exotic materials are available

♦ Can provide intrinsically safe EXIBIICT6 or explosion-proof EXIICT6

♦ auto - zero adjustment

♦ Simulate 4~ 20mA DC two-line linear output

♦ HART protocol, Fieldbus or Foundation Fieldbus.

 

3. Parameter specifications:

♦ Measurement range:Pressure difference :0~ 0.16KPa ~0 ~ 10MPa

                                    Relative pressure: maximum 0~ 40Mpa minimum 0~ 0.16KPa

                                    Absolute pressure: maximum 0~ 25Mpa minimum 0~ 20KPa

♦ Liquid medium to be tested: gas and steam

♦ Range removal rate of 100∶1(intelligent)

♦ Output signal: 4mA ~ 20mA DC two lines

♦ Working voltage:(16.4 ~ 45) VDC,

                              (16.4 ~30)VDC intrinsic security type

♦ The CEV cable communication distance is 2km

♦ Load capacitance :< 0.22μF

♦ Load inductance: less than 3.3MH

♦ Power cord space: more than 15 cm

♦ Accuracy :0.075%, 0.2% 0.5%

♦ temperature:Ambient temperature :-40℃~85℃

                       Storage temperature :-40℃~100℃;

                       The medium temperature is -40℃~100℃

♦ Bolts: Stainless steel

♦ Shell: Low copper aluminum alloy shell

♦ Explosion-proof type: intrinsically safe Exibiict5 or Exibiict6

♦ Explosion-proof type EXDIIBT5 or EXDIICT6

♦ Relative humidity :0~100% RH

♦ protection: IP67

♦ "O" type seal ring: fluorine rubber, nitrile rubber

♦ Field display :100% display meter, LED, LCD

♦ Temperature Drift:Zero: 0.5% FS / 50 ℃

                                Range Drift :0.7%FS/50℃

♦ The effect of power supply voltage change is ± 0.005%FS /V

♦ Filling liquid: silicone oil or inert oil

♦ Start time :< 2 seconds

♦ Damping time :2s

♦ Weight: 3.5kg (not optional)

 

4. Selection coding table: