Filter
Top Products
Page 48
Wiring the pH Sensor
Section 2
2. Use a large flat-blade screwdriver to loosen the two screws securing the
980 Flow Meter cover. Open the cover.
3. Strip the insulation from the pH junction box leads ¼ inch.
4. Route the cable (Cat. No. 9708800) from the pH junction box through a
NEMA-rated compression fitting (Cat. No. 16483) or conduit to one of the
½ in. openings on the bottom of the 980 Flow Meter.
5. Connect the wires to the proper screw terminal blocks (TB3). Refer to
Table 12 and Figure 21.
Figure 21 Junction Box to Instrument
Table 12 pH Terminal Block Connections (TB3)
Pin Signal Description Wire Color
1 shield clear
2 reference black
3pHbrown
4RTDred
5 - 5 V dc orange
6 common yellow
7 + 5 V dc green
J12
XMIT+
CH A+CH 4
RAIN+
1
1
1
XMIT–
RCV+
RCV–
SHEILD
AVTB11
TB10 4-20 mA
TB 9 ANALOG
TB4
RAIN
GROUND
CH A–GROUNDRAIN–
+12V
SHIELDSHIELDSHIELD
DEPTH–
CH B+CH 5CH 1
DEPTH+
CH B–GROUNDGROUND
SHIELD
SHIELDSHIELDSHIELD
GROUND
STARTCH 6CH 2
DSR
PULSEGROUNDGROUND
RXD
BOTTLESHIELDSHIELD
SHIELD
SHIELD
TOTALIZER
TB7
TB6
TB2
TB5
TOTAL –
RTD –
TIP
TIP
TOTAL +
1
1
MODEM
ULTRASONIC
RTD
RING
RING
RTD
DTR
EVENTCH 7CH 3
TXD
GROUNDGROUNDGROUND
+12V
SHIELDSHIELDSHIELD
RS232C
SAMPLERANALOGANALOG
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
5
5
5
5
6
6
6
6
7
7
7
7
8
8
8
8
9
9
9
9
10
10
10
10
11
11
11
11
12
12
12
12
13 14 15 16
SHIELD
TB3TB3
pH
REF
pH
RTD
–5V
GROUND
+5V
485A
485B
485+NO
NO
NO
NO
485GNDCOM RELAY 1
COM RELAY 2
COM RELAY 3
COM RELAY 4
SHIELDNC
NC
NC
NC
RS485
1 2 3 4 5 6 7 8 9 10 1112
F2
F1
HOT/ 1
NEU/ 2
T, 1.0A 250V
ON
1
2
3
HOT/ 1
NEU/ 2
J12
XMIT+
CH A+CH 4
RAIN+
1
1
1
XMIT–
RCV+
RCV–
SHEILD
AVTB11
TB10 4-20 mA
TB 9 ANALOG
TB4
RAIN
GROUND
CH A–GROUNDRAIN–
+12V
SHIELDSHIELDSHIELD
DEPTH–
CH B+CH 5CH 1
DEPTH+
CH B–GROUNDGROUND
SHIELD
SHIELDSHIELDSHIELD
GROUND
STARTCH 6CH 2
DSR
PULSEGROUNDGROUND
RXD
BOTTLESHIELDSHIELD
SHIELD
SHIELD
TOTALIZER
TB7
TB6
TB2
TB5
TOTAL –
RTD –
TIP
TIP
TOTAL +
1
1
MODEM
ULTRASONIC
RTD
RING
RING
RTD
DTR
EVENTCH 7CH 3
TXD
GROUNDGROUNDGROUND
+12V
SHIELDSHIELDSHIELD
RS232C
SAMPLERANALOGANALOG
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
5
5
5
5
6
6
6
6
7
7
7
7
8
8
8
8
9
9
9
9
10
10
10
10
11
11
11
11
12
12
12
12
13 14 15 16
SHIELD
TB3TB3
pH
REF
pH
RTD
–5V
GROUND
+5V
485A
485B
485+NO
NO
NO
NO
485GNDCOM RELAY 1
COM RELAY 2
COM RELAY 3
COM RELAY 4
SHIELDNC
NC
NC
NC
RS485
1 2 3 4 5 6 7 8 9 10 1112
F2
F1
HOT/ 1
NEU/ 2
T, 1.0A 250V
ON
1
2
3
HOT/ 1
NEU/ 2
3328 pH 0293 02
PREAMP INTERFACE
FOR USEW
ITH PH PR
OBE
W
IRING INSTR
UCTION ARE ON
INSIDE COVER
POWER
OFF
No Connection