The pressure transmitter is mainly applied to measure pressure, negative pressure, absolute pressure and other parameters of gas, liquid or vapor, then to convert these parameters into 4~20mA DC. It can connect with HART manipulator to make self-diagnosis, reset mea- suring range and set zero automatically. The pressure transmitter δ cell receives measured absolute pressure from one side, meanwhile, the other side is sealed to be base cell to measure absolute pressure of exhaust system, distillation tower, evaporator, evaporator and crystallizer.
Zero migration volume
Maximum zero positive migration volume: difference between migration volume upper range and measuring range
No negative migration volume
Measuring range
Lower range limit: 0%URL~+100%URL-Span
Upper range limit: Span~+100%URL
Conforming to HART communication, load resistance requirement is 230Ω~600Ω (Both signal receive and transmit resistance) .
Measuring range and zero adjustment
HART manipulator,local button,HART protocol supported by communication software.
Response time
When the electrical damping of the transmitter is turned off, the response time of the step input applied to the
transmitter from 10% to 90% of the output range is less than or equal to 0.4s.
Measuring object: liquid, vapor and gas
Ambient temperature: -40℃~85℃
Accuracy: 0.1% F.S Range ratio: 100:1
Insulation resistance: >100MΩ (500VDC)
Damping value: 0.1~16s (Optional)
Temperature affecting value: better than 0.1%F.S/10℃
EMC: EN 61326-1:2013
Output signal: 4~20mA(Max 22mA,Min 3.8mA)
Communication interface: HART
Intrinsic safety: EX ia IIC T6