Products
NEGELE flow monitors
Flow monitors are deployed in a wide variety of processes to prevent dry running of pumps or to monitor cooling loops. To reliably monitor threshold values, these applications rely on a high degree of reproducibility.
With the FWS/FWA ultrasonic flow monitor and the FKS calorimetric flow monitor, NEGELE offers two different measurement principles that reliably and cost-effectively monitor your processes.
Ultrasonic flow monitors
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Calorimetric flow monitors
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| The FWS/FWA flow monitor operates on the basis of the ultrasonic Doppler principle. An ultrasonic signal is output into the medium at regular intervals in a direction opposite to the direction of flow. This signal is reflected by particles flowing in the medium and is received again by the flow monitor. The frequency of the reflected signal varies with the relative movement of the flowing medium (Doppler effect). The measured change in frequency is thus a measure of the flow speed of the medium | The FKS flow monitor operates on the calorimetric measuring principle. The method takes advantage of the physical effect that a flowing medium absorbs heat energy and carries it away. The sensor tip of the calorimetric flow monitor houses a temperature sensor with an integrated heating resistor. This heating resistor is periodically switched on and off by the integrated evaluation electronics and creates a localized increase in temperature in the medium. While the heating resistor is switched off, the flowing medium transports heat away from the sensor tip. This temperature change is measured by the temperature sensor and is an indication of the flow speed of the medium. |
