Draught / Pressure Measurement - Ecom CN Operating Instructions Manual

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.
ecom-CN
-0.12
Draft
stored value:
Draft -.-- hPa
Set zero point
-0.12
Draft
stored value:
Draft -0.12 hPa
Set zero point
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hPa
hPa