Vaisala GM70 - Manual (Page 29)

Chapter 6 _____________________________________________________ Settings
VAISALA __________________________________________________________ 29
Display Settings
0505-228
Figure 8 Display Menu
Display Units
The unit of the measurement can be selected between ppm and %. The
default unit is ppm for measuring ranges with upper limit of 10 000 ppm
or less. For measuring ranges with upper limit of 2...20%, the default unit
is %.
1. Open the MENU , press OPEN.
2. Select ►Display , press .
3. Select ►Quantities and units , press .
4. To change the unit, press UNIT (ppm or %)
5. Press EXIT to return to the basic display.
6. Press YES , if you want to check the environment settings,
otherwise press NO .
NOTE Measurement units (ppm and %) express the CO
2
concentration by gas
volume.
1% CO
2
= 10 000 ppm CO
2