Vaisala PTU300 Podręcznik Użytkownika Pobierz pdf (Strona 178)

User's Guide _______________________________________________________________________

176 __________________________________________________________________ M210796EN-G

Using Serial Line

1. Press the ADJ button on the motherboard to open the adjustment

mode. 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. Remove the probe filter and insert the probe into the reference

temperature.

3. Enter the command CT or (CTA for additional T probe) and press

ENTER.

4. Type C and press ENTER a few times to check if the reading is

stabilized. Let the reading stabilize, give the reference temperature

after the question mark and press ENTER three times.

When having another reference temperature (2-point calibration)

press ENTER only twice and insert the probe to the second

reference. When the reading is stabilized, give the second reference

temperature after the question mark and press ENTER. Note that

the difference between the two temperature references must be at

least 30 ºC.

Example (1-point adjustment):

>ct

T : 16.06 Ref1 ? c

T : 16.06 Ref1 ? 16.0

Press any key when ready ...

T : 16.06 Ref2 ?

5. OK indicates that the calibration has succeeded. Give the

calibration information (date and text) to the transmitter's memory;

see the serial commands CTEXT and CDATE.

6. Press the ADJ button on the motherboard to close the adjustment

mode.

7. Take the probe out of the reference conditions and replace the

filter.

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Vaisala PTU300 Podręcznik Użytkownika Strona 178