DW Switch - Bircher DW40 contact

A pressure wave, generated by the signal generator, reaches the air pressure switch. The diaphragm bends and the electrical contact switches.
As long as the input pressure is greater than the response pressure, the electrical contact remains switched.
The response behaviour of the Switch can be individually adjusted via the contact (K) and valve screw (V).

As of 2023, the adjustment of set screw V is a fixed set value, for health and safety reasons it may no longer be adjusted.

- excl. grey housing
- with plug connector
- 1 x NO contact
- maximum pressure 15 mbar
- response pressure 2 mbar
- pressure compensation 110 ml/min. at 2 mbar