Manual
6
3 System description
3.1 Device
The gas detector PCE-WMM 50 is equipped with a buzzer as well as a visual indication. These are
activated when the CO
2
concentration reaches or exceeds a threshold previously set. Also, high CO
2
concentrations activate a potential-free contact which can, for instance, activate a fan which reduces the
increased CO
2
concentration in the room concerned.
Sensor unit
A
LC display
B
Yellow LED (error indication)
C
Red LED 2 (AL2)
D
Red LED 1 (AL1)
E
Green LED (power supply)
F
Reset key
G
Mode key
H
Enter key
I
Communication cable to remote display
J
Potential-free contact:
Red cable
White cable
Blue cable (central contact of the relay)
K
Power supply
L
Rubber protective cap
M
Gas input
N
Buzzer
