Vaisala HMT310 - Manual (Page 68)

USER'S GUIDE____________________________________________________________________
68 __________________________________________________________________ M210619EN-D
FCRH Relative Humidity Calibration after
Sensor Change
Syntax: FCRH<cr>
The transmitter asks and measures relative humidity and calculates the
calibration coefficients. This two-point adjustment needs to be performed
after a sensor change. Follow the more detailed calibration instructions
on page 69, but instead of the CRH command, use the FRCH command.
Example:
>frch<cr>
RH :
1.82 1. ref ? 0<cr>
Press any key when ready<cr>
RH
: 74.22 2. ref ? 75<cr>
OK
>
The OK indicates that the calibration has succeeded.
CTEXT Set Calibration Information Text
Syntax: CTEXT<cr>
1. Remove the transmitter unit from the mounting plate (see
Mounting the Transmitter/Removing the Transmitter Unit on page
21) and press the adjustment button once (see Figure 17 on page
70).
2. Issue command LI and enter value 0 for an offset value and value 1
for a gain value.
3. Issue command CTEXT and enter calibration information text.
Example:
>ctext<cr>
Cal. info : Vaisala/HEL ? HMK15<cr>
>
CDATE Set Calibration Date
Syntax: CDATE yyyy mm dd<cr>
1. Remove the transmitter unit from the mounting plate (see
Mounting the Transmitter/Removing the Transmitter Unit on page
21) and press the adjustment button once (see Figure 17 on page
70).