Vaisala GMK220 User Manual download pdf (Page 9)

Chapter 3_____________________________________________________________________ Operation

VAISALA _____________________________________________________________________________7

6. Let the calibrator settle for 10 minutes.

7. Connect the reference gas and adjust the flow rate to 0.6 l/min

with a screwdriver (item 4, Figure 1). Flush the chamber with the gas

for 5 minutes.

8. Input the ambient barometric pressure.

MF_PRESSURE XXXX<CR>

where xxxx= pressure in hPa.

Example:

>MF_PRESSURE 1013<cr>

MF_PRESSURE=1013

9. Input the ambient temperature.

MF_TEMP XXX<CR>

where xxx = temperature is given in tenths of °C (25 °C = 250).

Example:

>MF_TEMP 250 <cr>

MF_TEMP=250

10. List the carbon dioxide concentration.

MF_MODE 2<CR>

Example:

>MF_MODE 2<cr>

MF_MODE=2

1620.1

1618.3

1619.8

...

The carbon dioxide concentration (in ppm) is measured every 0.5

seconds.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 17 18

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Vaisala GMK220 User Manual Page 9