Chapter Three: Overview
Inside the Type 146 Unit
59
Thermocouple Board
The Thermocouple board has two 9-pin female Type “D” connectors since the board can support
up to two thermocouple gauges. Table 17 shows the connector pinout. The top connector is the
lower numbered channel, and the bottom connector is the higher numbered channel. For
example, if this board is installed in slot 1, the top connector is channel 1, and the bottom
connector is channel 2.
The 146 instrument supports the following thermocouples:
•
MKS TC-1A
•
Hastings DV-6M
Note
Units equipped with a Thermocouple board cannot carry a CE mark since
there are no CE compliant thermocouple gauges available.
Thermocouple Connector Pinout
Pin Number
Assignment
1
Drive +
2
Drive -
3
4
Drive -
5
Drive +
6
Gauge ID
7
Digital Ground
8
Keyed Position
9
Chassis Ground
Table 17: Thermocouple Connector Pinout
Cabling Information for the Thermocouple Board
Cable
Part Number
Available Lengths
146 to TC-1A
CB146-6-XX, CB146S-6-XX
10 ft to 25 ft
146 to DV-6M
CB146-8-XX, CB146S-8-XX
10 ft to 100 ft
Extension cable, 146 to TC-1A
CB146-7-XX, CB146S-7-XX
26 ft to 100 ft
where XX indicates the length
Table 18: Cabling Information for the Thermocouple Board
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