VKP
page 6
VKP K02/0416
Example: measures for contact-protection
For capacitive and inductive loads (long conductors and relay/safeguard) we
recommend following protective wiring scheme.
8. Commissioning
Adjustment of limit-values
The contact is adjusted via the two red graduated stoppers for the desired
switching point.
Reference-edge for decreasing flow: Lower-edge of contact housing.
Reference-edge for increasing flow: approx. 5 mm above the lower-edge.
Push the switch-housing till the reference-edge stays on the desired scale
value, where the contact should be switched.
Hysteresis
Hysteresis indicates the difference between switch-in and switch-off points of
contacts. The Hysteresis amounts to approx. 5 mm of float-hub.
Overstepping of measuring range
With non-pulsating flow currents, the measuring range is essentially overstepped.
Only an increase in pressure-loss would be detected.
(Permitted max. operating pressure must not be overstepped!)
