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When “READY TO TEST” is displayed on the Main Test Screen:
•
Press
[Memry],
•
Highlight
RH SENSOR CAL
•
Press
[START]
Allow the test to proceed until completed. It should take five to seven (5 to 7) minutes.
NOTE: At least five (5) tests are required for the proper analysis and correction factors
to be calculated.
When the instrument again indicates “READY TO TEST,” prepare and load another capillary
tube and sample bottle, and press
[START]
to perform another test. Do this at least four (4)
more times, or until you have a total of five valid test results.
To be considered valid, all 5 tests must give results within
±
50 μg of each other.
If five valid results are not available, repeat the tests until there are five valid tests. If
continued testing does not produce five valid test results, please contact Customer Service
for assistance at 602-470-1414 or 800-528-7411 or via email at
.
When five tests results are available, press
[Menu]
and the Main Menu Screen appears.
•
Select
CALIBRATION MENU.
•
Select
PERFORM RH SENSOR CAL
.
•
Press
[Selct]
,
[Down]
, and
[Selct]
to select all calibration tests to be included in the
calculations.
•
Press
[Cal]
. The screen will display the calibration water mass.
•
If necessary, use
[Edit]
to change the value of the capillary tube in grams. 1.0
µ
l =
1000
µ
g, .5
µ
l = 500
µ
g, and .1
µ
l = 100
µ
g.
•
Press
[Go]
. A screen will appear listing the calculated data and calibration factor.
•
Press
[Accpt]
to save the new calibration constant.
The new calibration constant will remain in memory until the next sensor calibration is
performed. The RH Sensor Tests used for this calibration will be automatically deleted so they
will not be used for the next calibration.
Press the
[Esc]
key until the
Main Test Screen
appears.
Perform at least one more calibration check to verify the accuracy of the calibration.
Accuracy of results should be within five (5) percent of the capillary capacity of 1000
micrograms, or in the range 950 to 1050
µ
g.
