Delta OHM HD37AB1347, Руководство пользователя

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4.7.1 CO
2
Calibration
Ensure the P37AB147 or P37B147 SICRAM probe is connected to input 1, Indoor Air Quality.
Use the arrows ▲▼ to select the 1) Calibration CO
2
item:
PROBE CALIBRATION
1) Calibration CO
2
2) Calibration CO
3) Calibration RH
▼▲
select
<ESC> exit/cancel
<ENTER> confirm
Confirm with ENTER. The following screen will appear:
PROBE CALIBRATION
CALIBRATION CO
2
CO
2
850 ppm
<ESC> exit/cancel
<ENTER> confirm
The instrument display shows the measured CO
2
.
The CO
2
sensor can be calibrated:
•
at 400ppm in clean air
•
at 0ppm with nitrogen bottles (code MINICAN.12A).
The instrument can automatically detect the calibration methods used: whether 400ppm or 0ppm.
The calibration should be performed at one point only: each new calibration cancels the previous
one.
Proceed as follows:
1. Unscrew the hexagon slot
peg on the instrument,
located back on the
aluminium black disc. In
the place of the peg, screw
the small metal tube at the
end of the plastic tube
connecting to the bottle for
calibration MINICAN.12A.