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Select BINDING POSTS and press ENTER.
c.
Press MENU to return to the operating screen.
d.
4.
The Model 1140A operating screen should be as is shown in Figure 11-5.
5.
Observing proper polarity, connect the equipment as is shown in Figure 11-6. Ensure
that the cold junction of the thermocouple is fully immersed in the ice bath.
Optionally, cover the terminals to shield them from air flow.
Figure 11-5: Operating Screen for Thermocouple Alloy Tests
Figure 11-6: Setup for Alloy Test at Binding Posts
6.
After at least one minute (to allow any thermal emf's created when connecting the
equipment to subside) note and record the reading on the DMM. It should be the
known error of the thermocouple at 26°C in microvolts to within the tolerance shown
on the test report.
7.
Remove the thermocouple from the binding posts.
8.
Set the TERMINALS to THERMOCOUPLE CONNECTOR.
Press MENU to go to the MAIN MENU (the cursor must be absent).
a.
Scroll to OUTPUT and press ENTER to go to the OUTPUT MENU.
b.
Select THERMOCOUPLE CONNECTOR and press ENTER.
c.
Press MENU to return to the operating screen.
d.
11-7
Calibration Procedure
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