Ecom-D
Page 33
15. Calibration Procedure
For best results, the calibration gas concentration should be as
close to the expected levels of emissions as possible. Because each
sensor is linear through a nominal range, one calibration gas concen-
tration can be used for a reasonably wide range of emission levels.
Fully charge analyzer:
Place unit on charge the night before you plan to use analyzer to
ensure full charge of battery.
Turn on analyzer and let warm up:
Switch on analyzer. Select
Gas Analysis
on main menu. Select
Fuel Type and press
OK
. Select
No
for Data Processing (if prompted).
Instrument will complete auto-zero sequence. Let the analyzer run for
15 minutes to acclimate to ambient temperature. This is very im-
portant, as the accuracy of electrochemical sensors is dependent on a
proper temperature setting. Switch off the analyzer and switch back
on. Go to
Gas Analysis
mode. The instrument will complete auto-
zero based on the proper temperature.
Calibrate your analyzer:
1.
Select
Control
on the main menu. Swipe calibration magnet over
the Cal Magnet sticker, located above the
ESC
button. The analyz-
er is now in calibration mode. You will see real-time readings on
the screen.
2.
Connect calibration hose from the regulator to the gas inlet
(O2/CO) on the analyzer.
a. If you are using an on demand regulator, connect it to the gas
bottle and open gas bottle valve completely. The regulator will
hold back the flow of gas until connected to the analyzer.
b. If you are NOT using an on demand regulator, adjust the flow
to match the analyzer pump draw.
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