User`s guide

Chapter 4 _________________________________________________________________ Operation
VAISALA ________________________________________________________________________ 99
General Settings
Changing Quantities and Units
To change quantities and units use serial commands or the optional
display/keypad. The MMT330 measures the following quantities:
- Water activity (aw)
- Temperature (T) (metric unit: ºC, non-metric unit:ºF)
- ppm for transformer oil only (H
2
O)
NOTE
Only the quantities
selected when ordering the device can be selected as
display output quantit
ies.
Using Display/Keypad
Use display/keypad to select the display output quantities.
1. Press any of the arrow buttons to open the Main Menu.
2. Press the ► arrow button to select Display.
3. Press ► arrow button to select Quantities.
4. Select the quantity by using the ▲▼ arrow buttons. Confirm the
selection by pressing SELECT. You can select 1 ... 3 display
quantities at a time.
5. Press EXIT to return to the basic display.
To select display units:
1. Press any of the arrow buttons to open the Main Menu.
2. Press the ► arrow button to select Display.
3. Use the ▲▼arrow buttons to select Units. Confirm the selection
by pressing the right-hand arrow button.
4. Use the ▲▼ arrow buttons to select display units. Confirm the
selection by pressing CHANGE. The unit changes from metric to
non-metric or the other way round.
5. Press EXIT to return to the basic display.
NOTE
Changing the display quantities/units (by using the display/keypad) has
no effect on the serial output
data.