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kmt-123-durchfluss.png: Mass Flowmeter-Thermal KMT

Mass Flowmeter-Thermal KMT

Measuring range:
0.32 - 63 Nm³/h ... 263.4 - 263350 Nm³/h air
G ½ ... G 2 with ball valve
½" ... 2" NPT with ball valve
R ½ screw-in version for DN65 ... 300
Material: sensor: stainless steel, ball valve: brass
pmax: 16 bar
tmax: 80°C
Accuracy: ±1.5 % of reading +0.5 % of full scale
Output: 2 analogue outputs / switch  outputs / pulse outputs programmable for mass, volume, temperature, consumption
Option: digital indication


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1,5 MB


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Configuration software

8,5 MB


The flowmeter of the series KMT, based on the measurement principle of thermal mass flow, is ideally suited for the measurement of flow of compressed air and gases in pipes with sizes from DN 15 ... DN 700. Measurement of for instance the usage of compressed air, nitrogen, CO 2 or other non-corrosive gases. The KMT is setting new standards in terms of measurement accuracy and reproducibility thanks to its application specific adjustment during production.

This flowmeter is adjusted under a pressure of 7 bar (abs) (DN 15 ... DN 50) or  9 bar (abs) (DN 65 ... DN 700). Adjusting the device specifically for its application has the advantage of keeping the actual flow speed in the pipeline low even with very large flow  quantities. Thanks to the more stable flow profile, this low flow speed facilitates a much better degree of reproducibility and accuracy than if the device were adjusted conventionally under normal pressure, as flow speeds up to 200 Nm/s can often no longer be controlled under conventional adjustment pressures.

The core design of the flowmeter is based on the hot film sensor element, which is produced  using the most modern thin film technology and has already proven itself time and time again in the automotive industry. This flow sensor features excellent long-term stability, a fast  response time and an extremely high degree of reliability. Two outputs are available, for further processing of the measurement data. Depending on the application, these outputs can be  configured as analogue (current or voltage), switch output or as pulse output for the measurement of the consumption.

The KMT has an integrated counter for consumption. The consumed  amount is shown on the display and the saved value is not lost even after power outage. The availability of the consumption amount as a free configurable pulse output is another helpful  feature.

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