C6097 · Edition 01.19
8
Function
3 Function
Pressure switch C6097A switches with falling pressure,
C6097B switches with rising pressure.
Once the set switching point is reached, a micro switch
is activated in the pressure switch which is designed as
a change-over contact.
The switching pressure is adjusted using a hand wheel.
CE approved pressure switches
NC
NO
COM
1
3
4
2
Measurement point
Micro switch
Hand wheel
Screw plug,
Rp 1/4"
Nozzle
0.8 mm
M16 x 1.5
FM approved and UL listed pressure switches
NC
NO
COM
1/2" NPT
Conduit
1
4
Measurement point
Micro switch
Hand wheel
Filter pad/nozzle
Pressure switches which lock off after switching can
only be unlocked with a manual reset, see page 16
(Resetting pressure switches with manual reset).
3 .1 Vent limiter
The flow on FM approved and UL listed pressure
switches is limited by the nozzle. In the event of a
diaphragm tear, the escape of gas is limited to less
than 1.0 CFH of natural gas, see max. inlet pressure,
page 23 (UL, FM certified pressure switches), Ad-
justing range, switching hysteresis.
