Specifications

ATI Model A15/82 Fluoride Monitor with Auto-Calibration

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