KOBOLD Instruments Inc • 1801 Parkway View Drive • 15205 Pittsburgh, PA • Tel: +1 412 788 2830 • E-mail: Please activate JavaScript • visit koboldusa.com

kec-durchfluss.png: Thermal Mass Flow Meter KEC

Thermal Mass Flow Meter KEC

Measuring Range:
0,3 - 20 Nm³/h ... 7 - 3440 Nm³/h Luft
max. 224 Nm/s
Accuracy: ±1,5 % of reading ±0,3 % of full scale
Option ±1,0 % of reading ±0,3 % of full scale
pmax: 100 bar
tmax: 180°C
G ½ ... G 2 male; ½" ... 2" NPT male
Flange DN15 ... 80 PN40 
Flange ½" ... 3" Cl. 150 and Cl. 300 
Material: Sensor- st.steel 1.4571, glass
Output: Modbus RTU, 2x 4-20 mA, pulse, alarm

Fast response time, no moving parts



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687 KB

Operating Instructions

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KEC-1/-3 - Operating Instructions

2,9 MB
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KEC-2/-4 - Operating Instructions

2,0 MB
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KEC-Software - Operating Instructions

1,0 MB
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KEC-Modbus-Installation - Operating Instructions

3,9 MB
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KEC-3/KEC-4 - ATEX Additional Operating Instructions

712 KB


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General Safety Instructions

175 KB


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Ex db IIC T4 Gb
Ex tb IIIC T90°C Db

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PC service software

6,8 MB


The new flow sensors KEC work according to the calorimetric measuring principle. Therefore an additional temperature and pressure compensation is not necessary. Due to its robust  design, the aluminium die cast housing, the robust sensor tip made from stainless steel 1.4571, new KEC are suitable for demanding industrial applications. Contrary to the previously sed bridge circuit, the newly developed evaluation electronics records all measured values digitally.

This allows very precise and fast measurements with a wide temperature range of up  to 180 °C. The measuring span is 1... 1000 and enables therefore measurements in very low as well as very high flow speeds of up to 224 m/s. KEC has an integrated Modbus output as a standard with which all parameters like Nm³/h, Nm³, Nm/s, Nl/min, Nl/s, kg/h, kg/min, ft/min, °C etc. can be transferred. All parameters can be adjusted directly at the instrument (via display) or via Service  Software.

Of course there are also 2 x 4 - 20 mA analogue outputs available for flow and temperature and a galvanically isolated pulse output for the total consumption. A remote diagnosis  can be carried out via Modbus and ll relevant parameters can be checked and changed if necessary. So it is possible to change e. g. the gas type, the inner diameter, the scaling and so on or  the zero point resp. the leak flow volume suppression in case of changed process conditions. Via remote diagnosis and status update e. g. temperature exceedings, failures of the sensor or  the calibration date can be determined.

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KOBOLD Instruments Inc.

1801 Parkway View Drive
15205 Pittsburgh PA
United States of America

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