Vaisala MMT330 - Manual (Page 157)

Chapter 8 ___________________________________________________ Calibration and Adjustment
VAISALA _______________________________________________________________________ 155
Temperature Adjustment
Using Display/Keypad
1. Press the ADJ button on the motherboard to open the
ADJUSTMENT MENU. If using a warmed probe for measuring,
probe heating will be interrupted when ADJ key is pressed. Wait
some time for the probe to reach ambient temperature.
2.
Select ►Adjust T measurement, press ►key.
3. Select 1-point/ 2-point adjustment, press START.
4. Remove the filter from the probe and insert the probe into the
reference temperature.
5. Wait at least 30 minutes for the sensor to stabilize. Follow the
stabilization from the GRAPH display.
6. Press READY when stabilized. Give the reference temperature
using the arrow keys.
When carrying out the 2-point adjustment, proceed to the next
adjustment point and carry out the procedure as described in the
previous item. Note that the difference between the two
temperature references must be at least 30 ºC.
7. Press OK. Press YES to confirm the adjustment.
8. Press OK to return to the adjustment menu.
9. Press EXIT to close the adjustment mode and return to the basic
display.