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Troubleshooting
Connector Pin Descriptions
6-20
Model 146i Instruction Manual
Table 6-6. Digital Output Board Connector Pin Descriptions, continued
Connector
Reference
Label
Designator
Table 6-7. Measurement Interface Board Connector Pin Descriptions
Connector
Reference
Label
Designator
AC IN
J1
AC PUMP
J2
BENCH TEMP
J3
PRES
J4
Pin
Signal
Description
21
Relay 2 Contact b
22
Relay 3 Contact b
23
Relay 4 Contact b
24
Relay 5 Contact b
25
Relay 6 Contact b
26
Relay 7 Contact b
27
Relay 8 Contact b
28
Relay 9 Contact b
29
Relay 10 Contact b
30
+24V
31
+24V
32
+24V
33
+24V
34
+24V
35
+24V
36
+24V
37
+24V
Pin
Signal
Description
1
AC-HOT
2
AC-NEUT
3
AC-Ground
1
AC-HOT
2
AC-NEUT Switched
3
AC-Ground
1
Bench Temperature Thermistor
2
Ground
1
Pressure Sensor Input
2
Ground
3
+15V
Thermo Fisher Scientific
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