Battery Changing, Calibration; Disposal Instructions; Warning Messages And Faults - TESTO 525 Mode D'emploi

Fault/indication
ERROR
OUT OF RANGE
CHANGE BATTERY
No change in measured
value
Does not switch on
Instrument inaccurate
- open battery compartment
- Fit 9 V alkali battery (IEC 6LR61) or accumulator
Ensure correct polarity!

Disposal Instructions

Only run down batteries should be disposed of.
Place batteries in separate plastic bags to prevent short-
circuits.
Recalibration is only to be carried out by specialist staff.
We recommend that you have the instrument recalibrated at
least once per year.
Possible cause
10% overshoot of
measuring Range
Battery voltage too low
Excess pressure applied
to pressure sensor
No Power supply
Inaccurate recalibration
Not zeroed
Natural ageing of the
pressure sensor

Warning messages and faults

Set permissible measuring pressure
Dispatch instrument for
Fit new battery as required
Battery possibly not correctly installed
Carry out recalibration
17
Battery changing
Calibration
Remedy
Fit new battery
repair
Repeat recalibration
Actuate zero