Electronic flow switch SIKA VEG09

Type: VEG09
Sensor for separate version
Probe length 48 mm
G1 / 2 external thread for direct installation
Material Sensor wetted by media stainless steel 1.4571
Medium temperature -20 ... 85°C
Max. Operating pressure 200 bar
Switching point ranges water 1 ... 150 cm/s, oil 3 ... 300 cm/s
4 pin sensor plug M12x1.

 

How it works: The electronic flow monitor works on the principle of temperature difference detection. In the cylindrical measuring probe There are two temperature sensors. They have optimal heat-conducting contact with the medium and at the same time a good thermal insulation to each other. The one sensor is heated with constant power, the other is not heated and thus assumes the medium temperature. When the medium is at a constant temperature difference between the two sensors.

 

The heated medium cools the heated sensor. The changed temperature difference between the two sensors depends on the flow velocity and thus a parameter for monitoring the preselected minimum flow. This signal is fed to a comparator, which drives a transistor output signal. The output signal is adjusted to the desired flow limit using a potentiometer. If this falls below, the transistor output signal is activated.

 

Version VEG: The built-in pipeline flow sensor is by means of Connecting cable connected to the transmitter, the designed for DIN rail mounting. This can be several Measuring points are monitored from a central point.