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Load Temperature and Humidity Offsets into the Product
If there are any observed errors in the As Found data that are greater than 70 %
of tolerance, temperature and humidity offsets can be entered into the Product. If
the subsequent procedure cannot bring the Product into tolerance, contact Fluke
Calibration.
To load offsets into the Product:
1. Record the As Found temperature and relative humidity offset values that are
entered into the Product.
2. Record the Product displayed Actual temperature at the set point of 23 °C,
35 %. Calculate the difference from reference temperature (actual
temperature at 23 °C) as "A" (A = DUT_Actual_T - Ref_T).
3. Record the Product displayed Actual temperature at the set point of 23 °C,
80 %. Calculate the difference from the reference temperature as "B".
4. Calculate T_Error with: T_Average_Error = (A + B) / 2.
5. Calculate the new temperature offset with:
T_Offset_New = T_Offset_As_Found - T_Average_Error
6. Record the Product displayed Actual relative humidity at the set point of
23 °C, 35 %. Calculate the difference from the reference as "C" (C =
DUT_Actual_RH - Ref_RH).
7. Record the Product displayed Actual relative humidity at the set point of
23 °C, 80 %. Calculate the difference as "D".
8. Calculate RH_Error with: RH_Average_Error = (C + D) / 2.
9. Calculate the new relative humidity offset with: RH_Offset_New =
RH_Offset_As_Found - RH_Average_Error.
10. To update the temperature and relative humidity offsets, access the Probe
Calibration Screen. Simultaneously hold NEXT and EXIT down for 4 seconds.
The offset that can be changed in this screen is blinking. Push up and down
to change the value of the blinking characters and store the new offset. Push
NEXT to move to the other offset field. Push up and down to change the
value of the blinking characters and store the new offset for that field.
11. Push and hold EXIT for 4 seconds to return to the main screen.
As Left Data Collection
If it is not necessary to enter new temperature and humidity offsets into the UUT,
the calibration is complete. If temperature and humidity offsets were changed per
the Load Temperature and Humidity Offsets into the Product section, then use
the steps in the As Found Data Collection section to take As Left data.
RHapid-Cal Humidity Generator
Calibration
37
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