H72.0.01.6C-02
Operating Manual GMH 3431
page 13 of 14
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13 Accuracy Check / Adjustment Service
You can send the device to the manufacturer for adjustment and inspection.
Calibration certificate - DKD certificate - official certifications:
If the measuring instrument is supposed to receive a calibration certificate, it has to be sent to the
manufacturer (declare test points).
If the device is certificated together with a suitable sensor very high overall accuracies are possible.
Basic settings can only be checked and – if necessary – corrected by the manufacturer.
A calibration protocol is enclosed to the device ex works. This documents the precision reached by the
production process.
14 Error and System Messages
Error messages for measurement
Description
What to do?
No display or
confused
characters,
Device does not
react on keypress
Battery empty
Replace battery
Mains operation: wrong voltage or polarity
Check power supply, replace it if necessary
System error
Disconnect battery and power supply, wait shortly,
then reconnect
Device defective
Return to manufacturer for repair
Err.1
Measured value above allowable range
Check: pressure not within sensor range?
-> measuring value to high!
Sensor defective
Return to manufacturer for repair
Err.2
Measured value below allowable range
Check: pressure not within sensor range?
-> measuring value to low!
Sensor defective
Return to manufacturer for repair
Err.7
System error
Return to manufacturer for repair
Value extremely out of measuring range
Value extremely out of measuring range
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Could not calculate display value
• measuring range or input range
exceeded
Check range parameter
• measured values are instable
Wait for signal regulation of the device
> CAL <
CAL flashing in
upper display
Either preset calibration interval has
expired or last calibration is not valid
Device has to be calibrated!
Error messages for automatic cell correction adjustment/calibration:
CAL Err.1
Cell correction too high
Determined cell correction must not exceed
1.2
CAL Err.2
Cell correction too small
Determined cell correction must not fall
below 0.8
CAL Err.3
Solution of wrong range
Wrong solution / far beyond tolerance
CAL Err.4
Wrong temperature
Beyond permitted temperature:
0.0 – 34.0 °C
(or 0.0 – 27.0 °C at 111.8 mS/cm)
If
“bAt”
is flashing the battery will be exhausted soon. Further measurements are possible for short time. If
“bAt” is displayed continuously the battery is ultimately exhausted and has to be replaced. Further
measurements aren’t possible any more.
