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Principles of Operation
Thermocouple
Signal Output
(JP5)
Thermocouple
Configuration
Jumpers
(JP7)
Pump AC
Configuration
Jumper
Pump Power
Output
AC Power
IN
(J2)
Connector for
AC Relays
K4 & K5
Only those relays actually required by the configuration of the T802 are populated.
A protective retainer plate is installed over the AC power relays to keep them securely
seated in their sockets and prevent accidental contact with those sockets that are not
populated see Figure 12-11).
Never remove this retainer while the instrument is plugged in and turned on. The contacts of
the AC relay sockets beneath the shield carry high AC voltages even when no relays are
present.
230
Teledyne API T802 Paramagnetic O
Status LED's
(D2 through D16)
JP2
Connector for AC Relays K4 & K5
Figure 12-10: Relay PCA Layout (PN 04135)
CAUTION
E
LECTRICAL
Analyzer Operation Manual
2
Watchdog
DC Power Supply
Status LED (D1)
Heater AC Power
Configuration
Jumpers
(J18)
S
H
HOCK
AZARD
Test Points
2
I
C
Connector
Power
Connection
for DC
Heaters
Valve Control
Drivers
Valve Control
Connector
DC Power
Distribution
Connectors
07275B DCN6418
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