ATI
Model A15/82 Fluoride Monitor with Auto-Calibration
14
O&M Manual
Rev-G (6/10)
ELECTRICAL CONNECTIONS
Wiring connections to the A15/82 are made to the back of the monitor. The terminal blocks on the back
of the monitor are pluggable terminals for ease of wiring. Power and alarm relay connections are made to the
lower terminal block while sensor and analog output connections are made to the upper block. A cable coming
from the combination sensor is installed in the chemistry module at the factory. The cable has a center conductor
and a shield. Refer to Figure 8 for a detail of the terminal connections on the rear of the fluoride monitor.
1: AC POWER – NEUTRAL
14: 4-20 mA OUTPUT CHANNEL 1 (+)
2: AC POWER - 110V – HOT
15: NOT USED
3: AC POWER - 220V – HOT
16: 4-20 mA OUTPUT CHANNELS 1 & 2 (-)
4: AC – GROUND
17: NOT USED
5: RELAY A - NORMALLY OPEN
18: NOT USED
6: RELAY A – COMMON
19: NOT USED
7: RELAY A - NORMALLY CLOSED
20: NOT USED
8: RELAY B - NORMALLY OPEN -
BRN
21: REFERENCE ELECTRODE -
SHIELD
9: RELAY B – COMMON -
WHITE
22: FLUORIDE ELECTRODE –
CENTER COND.
10: RELAY B - NORMALLY CLOSED
23: TEMPERATURE -
RED
11: ALARM RELAY C/D - NORM OPEN
24: TEMPERATURE -
BLK
12: RELAY C/D – COMMON
25: TEMPERATURE -
GRN
13: ALARM RELAY C/D - NORM CLOSED
Figure 8 - Fluoride Monitor Electrical Connections
