Error Messages - testo 325-I Bedienungsanleitung

Keep the Print button and the Right button pressed down
simultaneously for 3 seconds during the capacity display.
Input of SO2, NO, CO cell coefficient
Main menu
The cell coefficient is located on the instruction leaflet of the
corresponding replacement measuring cell.
After entering the coefficients and confirming with the OK
button, you jump to the zeroing phase.
During the calibration phase you can jump to the zeroing phase
3 sec. at any time by pressing the ESC button twice.
Battery
capacity
V 1 1 0
<3 sec.
6.0
Press Print and
Right buttons
simultaneously
SO2
CAL.
25.50
25.8 °C
Select
OK
decimal
points
Measuring menu
Zeroing phase
SO2
CAL.
60 sec.
43 0
ppm
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Maintenance
Changing the measuring cells
Cancellation of the calibration phase will
result in incorrect readings!
Recalibration can be performed by Testo
service points, subsidiary companies and
agents.
Increase numeric value
Decrease numeric value
Error message
Error messages during the measuring operation
flashes
During the zeroing phase
SO D flashes
2
NO D flashes
CO D flashes
low
CO D flashes
high
Before switching off
SO flashes
2
NO flashes
CO flashes
low
CO flashes
high
LOW BAT
After switching on/zeroing phase
SO2 A flashes
NO A flashes
CO A flashes
low
CO A flashes
high

Error messages

Cause / Remedy
Permissible operating temperature exceeded.
The ambient temperature changes to non-
permissible values. Adjust ambient temperature.
Measurement of zeroing point not stable. Wait
until zeroing phase has been repeated.
If this is not successful, the measuring cell is
used up.
There is still flue gas in the instrument, or very
high concentrations were measured during the
last measurement, or the zeroing phase is
prolonged.
Cause: Insufficient flushing with fresh air after
last measurement or probe is located in the flue
gas.
→ Place probe in fresh air. If no change occurs
after repeated cycling of the zeroing phase,
there is a fault in the cell or the cell is used up.
Instrument distribution voltage becoming too low.
Charge rechargeable battery/change battery or
connect power unit.
There is still flue gas in the instrument, or very
high concentrations were measured during the
last measurement or the zeroing phase is
prolonged.
Cause: Insufficient flushing with fresh air after
last measurement or probe is located in the flue
gas.
→ Place probe in fresh air. If no change occurs
after repeated cycling of the zeroing phase,
there is a fault in the cell or the cell is used up.
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