Thermal Mass Flowmeter By Wuhan Rosemount Measure & Control Technology Company

These Thermal Mass Flowmeter measure fluid mass flow rate by means of the heat convected from a heated surface to the flowing fluid in no need of temperature and pressure compensation.various unit optional (scfm, sfpm, nm3/h). output 2 way 4-20mA signal for instantaneous flow rate and temperature. optional display/keyboard module display instantaneous and cumulative flow rate,working time,temperature,alarm. Site setting for full range, pipe section area, alarm, relay, pulse output frequency.
Performance
Accuracy : A 1% reading or A 0.25% full range.
Calibration : according to NIST
Repeatability : A 0.2% full range
Response time : 0.9 sec
Pressure
Insert type : 34.5Bar (500psi)
Pipe type : take NPT for example : 34.5Bar(500psi)
note: the data above is collected on the condition of 38a
Temperature
Standard sensor : -40~121a
Middle temperature sensor : 0~204a
High temperature sensor : 0~343a
Electronic unit : -40~70a no display
-20~60a having display.
Note: no high temperature sensor for pipe type
Power supply
Standard :24VDC,a A 10%,a 0.5A
Optional : 85-250VAC,a 50/60Hz,25W.
Output
2 way isolation 4-20mA , one for instantaneous flow,one for temperature;
100Hz,10 isolation pulse output
RS485 connection, communication protocal : Modbus,Profibus-DP, Devicenet, Ethernet.
Physic property
Sensor material :
316ss(standard);Hastelloy C276 optional.