C.I.B. UNIGAS - M039175CD
36
Check of the detection current (with printed circuit)
Checking the detection current (for models without
printed circuti board)
To check the detection signal follow the scheme in Fig. 32 or
Fig. 33. If the signal is less than the value indicated, check the
position of the detection electrode or detector, the electrical
contacts and, if necessary, replace the electrode or the
detector.
Fig. 32: Detection by electrode
Fig. 33: Detection by photocell QRA..
To check the detection signal remove the bridge on “TEST ER” or
“TEST UV” and connect a micro ammeter when Fig. 34. If the
signal is less than the value indicated, check the position of the
detection electrode or detector, the electrical contacts (one ER
terminal for the electrode, two FC terminals for the UV probe - see
pictureon the side) and, if necessary, replace the electrode or the
UV detector.
Fig. 34
Control box
Minimum detection signal
Siemens LFL1.3..
6µA (with electrode)
Siemens LFL1.3..
70µA with UV detector)
TERMINAL BOARD
MC
SCALA µA DC
27
TERMINAL BOARD
MC
Control box
Minimum detection signal
Siemens LFL1.3..
6µA (with electrode)
Siemens LFL1.3..
70µA (with UV detector)
ER
FC
+ µA -
- µA +
UV detector
electrode
