Vaisala PTU300 - Manual (Page 177)

Chapter 7 ____________________________________________________ Calibration and adjustment
VAISALA _______________________________________________________________________ 175
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 button is pressed. Wait
some time for the probe to reach ambient temperature.
2. Select Adjust T measurement (or TA measurement for
additional probe) press the right arrow button.
3. Select 1-point/ 2-point adjustment. Press the START key.
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 the READY key when stabilized. Give the reference
temperature using the arrow buttons.
When carrying out the 2-point adjustment, proceed to the next
adjustment point and carry out the procedure as described in the
previous items. Please note that the difference between the two
temperature references must be at least 30 ºC.
7. Press the OK key. Then press YES to confirm the adjustment.
8. Press the OK key to return to the adjustment menu.
9. Press the EXIT key to close the adjustment mode and return to the
basic display