Sigma 980 - 5.6 Cleaning and Maintaining Submerged Area;Velocity Sensors

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
Tabl e 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 11 12
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 11 12
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 USE W
ITH PH PR
OBE
W
IRING INSTR
UCTION ARE ON
INSIDE COVER
POWER
OFF
No Connection