Trouble Shooting; Errors - Observator Instruments DIFF User Manual

OBSERVATOR
instruments

9. Trouble shooting

9.1 Errors

symptom
Message low battery whilst they are fully
charged. The used batteries are new.
Message low battery whilst they are fully
charged. This occurs mostly while
measuring high flows.
The DIFF keeps measuring and the flow
value is high.
The DIFF does not power when the
selection button is pressed more then four
times.
Extraordinary power usage
The calibration fails
It is not possible to get a successful
calibration.
Difficult to read display
Display turns dark.
A high deviation in the reading
An over ranged error occurs.
A high deviation in the reading and the
DIFF indicates the wrong flow direction.
Deviation in the measurement
The measurement takes a long time
The motor stops during the measurement
The DIFF leaves marks on the ceiling.
????? On the display in the battery menu.
The DIFF does not work.
The excel button does not work
V11.2 - EN
DIFF automatic volume flow meter
solution
-New batteries will only reach full capacity after
charging them a couple times. Use the white battery
charger as much as possible.
Old batteries can show these symptoms. Replace
the batteries if this occurs
Charge the batteries. The battery capacity does not
reach the 80%. Order new batteries if the old
batteries don't reach the full capacity.
Replace the batteries or replace the fuse. (Chapter
8.2).
Contact you dealer or Observator.
There are pressure differences during the calibration
or the DIFF is moved during calibration. Recalibrate
when the DIFF is on a flat surface.
Return the DIFF to Observator for factory calibration
or repair.
Check the settings of the contrast and backlight.
(chapter 3.4)
This is caused by ESD or an auto power off. Reinsert
the fuse and switch the DIFF on.
Charge the batteries and recalibrate the DIFF.
The measured flow is above the measuring range of
the DIFF. Take partial measurements and add these
or lower the flow that needs to be measured.
The measurement was started before the DIFF was
on the vent.
Make sure that the DIFF is fully placed over the vent.
Make sure you keep the DIFF in place while
measuring. Make sure that there are no gaps
between the DIFF and the ceiling.
The flow is around 10m3/h the lower limit of the
DIFF. Retry the measurement.
Clean the rubber with non aggressive detergent
You just exchanged the batteries. After a couple of
minutes the ???? will disappear.
The DIFF is in auto off function. Switch it back on
Excel is not installed.
Page 22
User manual
TDC 16-7-2012