Thermal Mass Flowmeter

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High Accuracy Mass Flow Monitor/Inexpensive City Gas Flow Measurement


This is a thermal mass flowmeter suited for consumption management of city gas in addition to air and nitrogen. From an energy saving point of view, it is best suited for consumption management of city gas in furnaces, boilers, air conditioning equipment and the like.



Wide flow range, high accuracy


Can display and output the flowrate converted to normal flowrate (0°C, 1 atm) directly requiring no compensation of temperature and pressure.


High durability thanks to the absence of moving parts

Major specifications
Nominal size 25mm 40mm 50mm 80mm
Connection Rc1 or
25A JIS 10K
RF Flange
Rc1·1/2 or
40A JIS 10K
RF Flange
Rc2 or
50A JIS 10K
RF Flange
80A JIS 10K
RF Flange
Flow range
2.4 to 36 10 to 150 30 to 450
Operating temp. range 0 to 60°C
Operating pressure range 0 to 0.7 MPa (Option: 0 to 0.98 MPa)
Accuracy (linearity) * ±1% of full scale
Power supply DC-powered
Body material SCS13A
Output Analog, pulse
Configuration Non-explosionproof, indoor use, IP65
Applicable fluids City gas (13 A), air, nitrogen

*: Accuracy is subject to temperature and pressure characteristics

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