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Calibration Procedure
Select TEMPERATURE and press ENTER.
b.
Press MENU to return to the operating screen.
c.
d.
The operating screen should be as is shown in Figure 11-4.
5.
For each of the Celsius readings of thermocouple type B-MN175:
a.
Program the Model 1140A to the temperature indicated in the test report.
b.
Record each reading on the DMM.
c.
Ensure that it is within tolerance.
Set the SYSTEM TEMPERATURE UNITS to FAHRENHEIT.
6.
a.
Press MENU to go to the MAIN MENU (the cursor must be absent).
Scroll to INSTRUMENT MODE and press ENTER to go the INSTRUMENT MODE
b.
MENU.
Scroll to SYSTEM TEMPERATURE UNITS and press ENTER.
c.
Select FAHRENHEIT and press ENTER.
d.
Press MENU to return to the operating screen.
e.
7.
Repeat Step 5, but with the Fahrenheit readings.
8.
For each of the remaining thermocouple voltage tests:
Set the Model 1140A to the temperature, THERMOCOUPLE type, and SYSTEM
a.
TEMPERATURE UNITS as necessary.
b.
Record each reading on the DMM.
c.
Ensure that each is within tolerance.
Thermocouple Alloy Tests
Program the Model 1140A as follows:
1.
Reset the instrument to its default settings.
Press MENU to go the MAIN MENU (the cursor must be absent).
a.
Scroll to MAINTENANCE and press ENTER to go to the MAINTENANCE MENU.
b.
Scroll to RESET INSTRUMENT TO DEFAULT VALUES and press ENTER.
c.
Select YES and press ENTER.
d.
Press ESC to return to the MAIN MENU.
e.
Set the THERMOCOUPLE to E-MN175.
2.
Scroll to THERMOCOUPLE and press ENTER to go to the THERMOCOUPLE
a.
MENU.
b.
Select E-MN175 and press ENTER.
c.
Press ESC to return to the MAIN MENU.
3.
Set the TERMINALS to BINDING POSTS.
a.
Scroll to OUTPUT and press ENTER to go to the OUTPUT MENU.
Scroll to TERMINALS and press ENTER.
b.
11-6
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