5-3 Sensor Connection
The structure of the Water Leakage Sensor (AD-LS Sensor) used for the Water Leakage Location Detector
(AD-AS-1LCM-A) are shown in Drawing 4 and Table 4.
Shapes and functions of each wire vary, so care should be taken when connecting to the detector. Refer to Drawing 5
*
Incorrect wiring will result in inaccurate indication of water leakage locations or break alarm output.
*While carrying out wiring, make sure that the power of the detector is switched off.
Drawing 4 AD-LS Sensor Structure
Table 1 AD-LS Sensor Configuration
Element
Configuration
Electrode 1
0.33-mm
2
tinned soft copper wire covered with red plastic braided thread
Electrode 2
0.5-mm
2
tinned soft copper wire insulated with green plastic
Electrode 3
φ0.4 resistance wire covered with white plastic braided thread
External
braiding
White plastic braided thread
Drawing 5 Terminal Block for Sensor Connection
-4-
Power source
AC85
～
264V
E
G
ro
un
din
g
B
ra
id
ed
w
ire
In
su
la
te
d
w
ire
R
es
ista
nc
e
w
ire
Sensor
AD-LS
Water leakage
(*Contact: 1a)
Break contact
(*Contact:1a)
4-20mA outp
C
O
M
C
O
M
N
O
N
O
+
－
AC85
～
264V
Power
E
2
Sensor
1
3
Water leakage
COM
NO
NO
COM
C-LOOP
+
－
Break
4mm max.
Electrode-3
resistance wire
Electrode-2
insulated wire
External braiding
Electrode-1
(braided wire)
contact
