ecom-CN
Page 11
4.4. Draft / Pressure measurement
Besides the draught measurement the
ecom-CN
offers the possibil-
ity of a differential pressure measurement (option). The instrument
must hereto be fitted with a second connection (pressure) on the
front.
Draft measurement:
The gas analysis mode already provides with a trend indication for
the draft conditions in the exhaust channel. The chimney draft value
is not recorded simultaneously to the other gas values (while press-
ing
<record>
) because the sensitive differential pressure sensor
easily tends to drift. For an exact measurement, it is consequently
recommended to re-calibrate this sensor just before analysing the
value. Select the sub-menu
"Draft/Pressure"
to start the measure-
ment.
The display shows the current value as
well as the mention to reset the sensor´s
zero point. Hereto release the draught
hose for a few seconds and press
<OK>
.
The sensor is re-calibrated.
Re-plug the draft hose. The display shows
the exact measured value which you can
store and add to all available results stored
in the intermediate memory while pressing
<record>
. The recorded value is shown on
the display.
Press
<ESC>
to quit the draft measure-
ment mode.
Draft
-0.12
hPa
stored value:
Draft
-.-- hPa
Set zero point
Draft
-0.12
hPa
stored value:
Draft
-0.12 hPa
Set zero point
Summary of Contents for CN
Page 1: ...Operating Instructions ...
