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Model 6517B Electrometer Reference Manual
Section 16: Verification procedure
6517B-901-01 Rev. C / August 2015
16-11
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
Reading limits
18° C to 28° C, 1 year
-25
°
C -26.42
°
C to -23.58
°
C
0
°
C -1.5
°
C to 1.5
°
C
50
°
C 48.35
°
C to 51.65
°
C
100
°
C 98.2
°
C to 101.8
°
C
150
°
C 148.05
°
C to 151.95
°
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.
Figure 138: Model 6517B humidity verification configuration