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Model 6517B Electrometer Reference Manual
Temperature verification
Accuracy of the Model 6517B temperature measurement is verified by connecting a thermocouple
calibrator to the Model 6517B and verifying that the temperature readings are within specified limits.
1. Connect a K-type thermocouple calibrator to the Model 6517B EXT TEMP terminal.
2. Turn on the Model 6517B and allow it to warm up for at least two hours before making
measurements.
3. Enable the Model 6517B temperature measurements by turning on the temperature data stamp.
Press MENU, use the right arrow key to select GENERAL on the second page of the lower
display, and press ENTER. Use the right arrow key to select A/D-CONTROLS, and press
ENTER. Select DATA-STAMP, and press ENTER. Use the left or right arrow keys to select
TEMPERATURE, and use the range up or range down key to select ON. Press ENTER, then
press EXIT three times to return to the measurement display. Press PREV to view the external
temperature.
4. Set the thermocouple calibrator to output -25 °C and allow the reading to stabilize.
5. Verify the Model 6517B temperature reading is within the limits specified in the table below.
6. Repeat steps 4 and 5 for each temperature listed in the table below.
Temperature verification limits
Calibration temperature
-25 °C
0 °C
50 °C
100 °C
150 °C
Humidity verification
Humidity measurement accuracy is checked by applying an accurate 0 VDC to 1 VDC to the Model
6517B and verifying that the humidity readings are within specified limits.
To verify humidity readings:
1. With the power off, connect the DC calibrator to the Model 6517A HUMIDITY connector, as
shown in the following figure.
6517B-901-01 Rev. C / August 2015
Reading limits
18° C to 28° C, 1 year
-26.42 °C to -23.58 °C
-1.5 °C to 1.5 °C
48.35 °C to 51.65 °C
98.2 °C to 101.8 °C
148.05 °C to 151.95 °C
Figure 138: Model 6517B humidity verification configuration
Section 16: Verification procedure
16-11
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