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Thermo Fisher Scientific
Connector
Reference
Label
Designator
PRES
J9
FLOW
J10
AMB TEMP
J5
O2 SENS
J2
AC BENCH
J4
24V IN
J18
FAN
J18
AC PUMP
J3
Z/S SOL.
J13
SAMPLE SOL.
J14
SPAN1 SOL.
J15
Pin
Signal Description
1
Pressure Sensor Input
2
Ground
3
+15V
4
-15V
1
Flow Sensor Input
2
Ground
3
+15V
4
-15V
5
Ground
1
Ambient Temperature Thermistor
2
Ground
1
Sensor Signal Input
2
Ground
3
Temperature Signal Input
4
Ground
5
+15V
6
-15V
1
BENCH THERMISTOR
2
Ground
3
AC-HOT
4
AC-BENCH HEATER
1
+24V
2
Ground
1
+24V
2
Ground
1
AC-HOT
2
AC-NEUT
3
AC-Ground
1
+24V
2
Zero/Span Solenoid Control
1
+24V
2
Sample Solenoid Control
1
+24V
2
Converter Solenoid Control
Model 48i Trace Level-Enhanced Instruction Manual
Troubleshooting
Connector Pin Descriptions
6-17
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Troubleshooting
