- TH series THERMAL FLOWMETER is a flowmeter for gas flow measurement.
- Based on Tokyo Keiso's original theory and measuring principle, the velocity of various kinds of gases are measured by thermal principle. TH can cover from very slow velocity to high velocity that offers very wide range ability compared to other methods of velocity detection of Orifice, Vortex etc.
- Various types of detectors and converters are available to meet variety of applications and functional requirements.
- High accuracy : The flow rate of various gases can be measured at high accuracy of ±1.0% F.S.*1 based on our theory.
- Wide rangeability : Accurate measurement in practical use at the flow rate as low as 0.5 m/sec. solving the difficulties in measuring gas flow with orifices or vortex flowmeters.
- Extremely low pressure loss : The thin cylindrical shape of sensor is effective in minimising line pressure loss.
- Long life : Long term running is guaranteed by the provision of a detector without moving parts and of a converter with a highly reliable circuit.
- Less influence from pressure fluctuation : Thanks to basic operational principle, TH Thermal Flowmeter is less influenced from by a change of a pressure of the gas.
- Less influence from gas temperature fluctuation : In normal usage, gas temperature fluctuation may cause such slight change on output as to be negligible and may be ignored. When gas temperature varies widely during operation and very accurate flow rate is required, temperature compensation function is available.(Not applicable for TR-1000 converter)
- Mass flow : Mass flow is obtained by measuring gas temperature and computing it by temperature compensation circuit.
- Applicable to various kinds of gases : Based on well analyzed heat conduction mechanism of thin metal tube, applications for gases do not require actual flow rate calibration so long as the physical characteristics are properly specified.
- Cost effectiveness : Even in large pipe size application, the only price increasing factor is thin lead pipes of the detector, So the instrument, as a whole, provides excellent cost effectiveness.
- Wide variation of converter unit : To meet applications and requirements, 4 different types of converter unit are ready to choose.
- High and low temperature version : This version is available for the measurement of gases from –196°C to +550°C.Namely, this flowmeter can be used for the applications with which the conventional one could not comply