intelligent pressure transmitter - Pressure transmitter

Pressure transmitter

1. Main characteristics

·Range covers scope is wide

All stainless steel construction, all kinds of pressure interface forms, has the flush diaphragm, the tantalum diaphragm and so on. Protection grade IP65

·All kinds of output signal forms, field may both regulating and displaying.

·Reversed polarity protection and instantaneous over current and over cross-voltage protection, is in accordance with EMI protection requirement.

·Explosion--proof product conforms to GB3836.4 standard ExiaIICT6 requirements, explosion--proof certificate number is CNEX03.823.

2. Working principles

This product adopts OEM pressure transducer with stainless steel isolation diaphragm as signal measure element and automatic testing by the computer. Using laser adjustment resistance technology carries on temperature compensation to zero point and sensibility in width temperature scope. Amplification circuit locates in stainless steel housing where would transform sensor signal into standard output signal. The whole product passed through strictly test and aged screening to element and device, half-finished product, and its performance is stable and reliable.

3. Technical parameters

Measuring range -0.1~0—0.01~60 MPa

Overload 1.5 times full range pressure

The type of pressure gauge pressure or absolute pressure or sealed reference pressure

Accuracy typical: ±0.25%FS

max ±0.5%FS (including non--linearity, sluggishness and repeatability)

Long-term stability typical ±0.1%FS max. ±0.2%FS

Temperature drift for zero point 0.03%FS/°C (≤100 KPa) 0.02%FS/°C (>100 KPa)

Temperature drift for full scale 0.03%FS/°C (≤100 KPa) 0.02%FS/°C (>100 KPa)

Permissive temperature

·normal operation temperature –20~70°C

·diaphragm –20~80°C (short time may arrive at 130°C)

·storage temperature –20~80°C

·high-low temperature type –65~150°C 10~200°C 10~350°C

Supply power (12.5~36) V DC

Output signal (4~20) mA DC

Transmission mode two--wire system

Shell protection cable line and connector are both IP65

Electric connection import explosion--proof plug socket or cable 1.5 m

Shell 1Cr18Ni9Ti stainless steel O-type ring: fluorine rubber, Nitrile rubber

Membrane 316 L stainless steel