Panametrics CGA 351, User Manual, Page: 17 / 119

CGA 351 User’s Manual 11
Chapter 2.
c. If desired, repeat sub-steps a and b to connect alarm-2.
5. Connect any shields to pin G .
Proceed to the next section to continue wiring the CGA 351.
2.1.5.2 Wiring the Inputs (TB2)
Terminal block TB2 contains connections for the CGA 351’s sample measurement signals. Specifically, the following
signals are routed to this terminal block:
•
zirconium oxide oxygen sensor
• thermocouple
• sensor furnace
All of the connections on terminal block TB2 have already been wired at the factory. In the event that one or more of
these wires must be reconnected, complete the following steps:
1. Locate the leads from the
zirconium oxide oxygen sensor. Connect these leads to terminal block TB2 as follows:
a.
Connect the positive sensor wire (white - #1) to pin
+
.
b. Connect the negative sensor wire (white - #2) to pin – .
2. Locate the leads from the
thermocouple. Connect these leads to terminal block TB2 as follows:
a.
Connect the
positive thermocouple wire (yellow - no number) to pin +
.
b. Connect the
negative thermocouple wire (red - no number) to pin
– .
Note: The two thermocouple wires (red and yellow) are bound together in a brown sheath.
3. Locate the leads from the sensor furnace. Connect these leads to terminal block TB2 as follows:
a.
Connect one furnace wire (white - #5) to pin
1
.
b. Connect the other furnace wire (white - #6) to pin 2 .
Note: The polarity of the sensor furnace leads is not important.
4. Connect the ground wire (white - #G) and any shields to either of the pins labeled G .
This completes the wiring of terminal block TB2. Proceed to the next section to continue wiring the CGA 351.