In many fields of process and plant engineering liquids or gases play a considerable part in the results of quality control and operational safety. In the case of coolant and lubricant supply, monitoring the functioning of pumps and aggregates, ventilation as well as monitoring the product itself a failure of the flow can cause considerable damage and downtime. Thus it is very important to monitor that these media are at the right place at the right time and in sufficient quantities. Electronic flow displays based on the calorimetric principle are especially suited for binary flow monitoring.
As these systems work without any mechanically moved parts they can be mounted independent of mounting position and flow direction. Another distinguishing feature of the calorimetric principle is its independence of the viscosity of the medium. Electronic flow professional monitors are based on the principle of thermal conductivity.
The flow monitor consists of a sensor that converts this physical effect into an electrical signal, and of a control monitor which processes the sensor signals and converts them into a binary signal output. The sensor is mounted directly into the medium.
