KMT - Thermal Mass Flowmeter

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Product Specifications
Measuring Range 0.32...63 Nm³/h to 263.4...263350 Nm³/h (Air)
Accuracy±1.5 % of Reading +0.5 to +0.8% of Full Scale
Maximum Pressure16 Bar
Maximum Operating Temperature+80 °C
Process ConnectionG ½...G 2 & ½...2" NPT with ball valve, R½ Threaded Version for DN65...300
Wetted MaterialsStainless Steel, Glass, Brass
OutputsAnalog Output / Switch Outputs / Pulse Outputs
Product Features
Optional Display
Hot Film Sensor Element
For Air & Other Non-Corrosive Gases
Compact and Remote Mount Probes

The KMT flowmeter, which utilizes 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. It can be used to measure the usage of compressed air, nitrogen, CO2 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 BarA (DN 15 ... DN 50) or 9 BarA (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 analog (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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Other Members of the KOBOLD Group:Henschen, Unirota, Heinrichs, MesUra Henschen GmbH KOBOLD Unirota Kft. Heinrichs KOBOLD Group MesUra KOBOLD Messring GmbH
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