Vaisala HMT360Series - Analog Output Calibration via Serial

Serial interface _____________________________________________________________________
Vaisala _________________________________________________________________________ 41
The transmitter asks and measures relative humidity and calculates the
calibration coefficients, for example:
>CRH ↵
RH : 1.82 1. ref ? 0 ↵
Press any key when ready... ↵
RH : 74.22 2. ref ? 75 ↵
OK
>
The OK indicates that the calibration has succeeded.
Temperature adjustment
CT ↵
The transmitter asks and measures temperature readings and calculates
the calibration coefficients, for example:
>CT ↵
T : 0.81 1. ref ? 0.5 ↵
Press any key when ready... ↵
T : 99.12 2. ref ? 99.5 ↵
OK
>
The OK indicates that the calibration has succeeded. When performing
one-point calibration press only ↵ for 2. reference.
Analog output calibration
Connect the HMT360 to a multimeter. Give the following command.
ACAL ↵
1. Disconnect the serial cable from the transmitter while reading the
multimeter value for the CH1 (I1).
2. Reconnect the serial cable. Type the multimeter reading and press
↵.
3. Type the higher current multimeter reading and press ↵.
>ACAL ↵
Ch1 I1 (mA) ? 4.846 ↵
Ch1 I2 (mA) ? 19.987 ↵
>