Fluke 9118A User Manual page 79

Accuracy Test
Make sure TC1 is at the midpoint in the access
tube (0 MM) when you do an accuracy test.
To do an accuracy test:
1. Set the Product to a setpoint temperature in Table 14.
2. Wait for the stability indicator to show the furnace
temperature is stable.
3. Record TC1 measurements for 1 minute.
4. Calculate the average of all measurements.
5. Calculate accuracy with:
Accuracy = TC1 – setpoint temperature
6. The accuracy must be less than or equal to ±5 °C. If
not, do an accuracy adjustment.
7. Do steps 1 through 6 for each setpoint temperature in
Table 14.
Accuracy Adjustment
To do an accuracy adjustment:
1. Calculate the new TEMP
Temp = Temp
n(new)
2. Put the TEMP value into the Product through the
n(new)
front panel or RS-232 port. Table 14 is a list of
temperature setpoints and the RS-232 command and
front-panel name for the TEMP parameters.
Note
parameter with:
n
- Accuracy
n(old)
Calibration Procedure for Tube Furnace
Table 14. Accuracy Parameter
Setpoint
(°C)
RS-232 Command
300 SOUR:SENS:CAL:PAR1
700 SOUR:SENS:CAL:PAR2
1000 SOUR:SENS:CAL:PAR3
1200 SOUR:SENS:CAL:PAR4
3. Let the Product soak for 60 minutes after you put in
the TEMP value.
4. Do steps 1 through 6 of the accuracy test.
To complete the calibration of the Product, do a stability
test, axial uniformity test, and accuracy test to make sure
the Product is equal to or less than the specifications for
each setpoint.
Calibration Furnace
Parameter
Front Panel
TEMP (300)
TEMP (700)
TEMP (1000)
TEMP (1200)
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