Vaisala MMT310 - Manual (Page 62)

User's Guide _______________________________________________________________________
62 ___________________________________________________________________ M210474EN-C
Analog Output Calibration
Syntax: ACAL<cr>
Connect the MMT310 to a multimeter in order to measure either current
or voltage depending on the selected output type. Issue the ACAL
command. Then type the multimeter reading and press Enter.
Example (current outputs):
>acal
Ch1 I1 (mA) ? 2.046
Ch1 I2 (mA) ? 18.087
Ch2 I1 (mA) ? 2.036
Ch2 I2 (mA) ? 18.071
>
Adjustment Using an MI70 Indicator
You can use the MI70 handheld indicator to adjust the following in
MMT310:
- Temperature (T)
- Relative humidity (RH)
- Pressure compensation value for humidity measurement (environment
settings)
Note that starting the adjustment mode in MI70 requires pressing the
adjustment button on the MMT310 board. See Figure 15 on page 56 for
the location of the adjustment button.
NOTE When adjusting both relative humidity and temperature, make the
temperature adjustment first.
Starting MI70 Adjustment
1. Connect the transmitter to the MI70 hand-held indicator using the
connection cable (optional accessory, Vaisala order code
DRW216050SP).
2. Turn on the MI70.
3. Press the MMT310 adjustment button (see Figure 15 on page 56)
to start the adjustment mode. A notification about starting the
adjustment mode is displayed on the MI70 screen.
4. Press OK to enter the adjustment menu. The available adjustment
options are displayed (RH or T). You can also view the date of last
adjustment.