Thermal Mass Flow Meter

Thermal Mass Flow Meter is a Meter that directly measures the Gas Mass Flow based on the principle of conductive and convective heat transfer. It need no additional pressure, temperature and/or density monitoring.  They operate either by introducing a known amount of heat into the flowing stream and measuring an associated temperature change, or by maintaining a probe at a constant temperature and measuring the energy required to do so.  Thermal mass flowmeters include two temperature sensors and an electric heater between them. The heater can protrude into the fluid stream or may be external to the pipe. By eliminating temperature changes in the process, any heat transfer within the flow stream is directly proportional to its mass flow.

Application: Gas

Brand: SMC (Smart Measurement Co., Ltd)/XUDA
Origin: USA/China

  • Process Connections: Insertion/Flange
  • Process temperature: 0 to +300°C
  • Operating pressure: 1000 PSIG (69 barg)
  • Velocity Range: 0.23 to 665 feet/second (0.07 to 203 normal meters per second)
  • Accuracy : ±1% of Reading
  • Repeatability: ± 0.25% of Full Scale
  • Turn down ratio: Over 100:1
  • Gas pressure effect: Minor; < ±20% of calibration pressure
  • Material : 316SS as per DIN 1.4571 (AISI 316 Ti)
  • Response Time: Less than one second
  • Display Parameters: Flow, Total flow, Switch settings, Temperature
  • Signal Interface: RS232 & RS485, MODBUS
  • Ex-protection: II 2 GD EEx d IIC T2 or T3
  • Cable (remote version): up to 300 meters
  • Wetted materials: SS #316 (Hastelloy and Monel optional)

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