Vaisala HUMICAP DMT132, Руководство пользователя

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13. Type the temperature of the second reference point and press ENTER to apply the
correction.
T 44.9847 Ref2 ? 45
OK
Saving settings...done
>
The CT command is now finished and both adjustments have been applied.
14. Use the L command to verify that the new user adjustment parameters are in use:
> l
15. Use the SEND command to verify that the measurement is OK:
> send
Tdf= -1.25'C
>
5.4.4 Capacitance Adjustment (CRH)
Adjusting the capacitance measurement affects measurement accuracy
across the entire temperature range. This command should be used only when the
sensor has been replaced, or the measurement has drifted significantly. After sensor
change, you must perform the two-point capacitance adjustment. For normal
adjustment, use the
RHCAL command instead.
CAUTION!
Write down the current capacitance adjustment parameters (visible with the
L command) so that you can restore them manually if necessary. Be aware that if you
revert the transmitter to factory settings using the FRESTORE command, you will clear
all of the user adjustment parameters, including the capacitance offset and gain that are
set by the
CRH command. See Restore Factory Settings (page 44) .
CAUTION!
The procedure below adjusts the capacitance measurement of the transmitter using the
serial line commands and the Vaisala Humidity Calibrator HMK15. You can use the procedure
to do a one-point adjustment (offset) or a two-point adjustment (offset and gain).
• One-point adjustment requires a < 50 %RH reference.
Chapter 5 – Maintenance
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