H82.0.02.6C-05
Operating Manual GMH 5150
page 18 of 22
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12 Alarm
(“AL.”)
There are 3 possible settings:
off (AL.oFF), on with buzzer (AL.on), on without buzzer (AL.no.So).
Alarm is given in the following cases (if alarm active, AL.on or AL.no.So):
-
Lower alarm boundary (AL. Lo) under-run
-
Upper alarm boundary (AL. Hi) over-rum
-
Sensor error
-
Low battery (bAt)
-
Err.7: system error (always with buzzer!)
In case of an alarm (and when polling the interface) the prio-flag is set in the returned interface message.
13
Real Time Clock (“CLOC”)
The real time clock is used for chronological assignment of the logger data and calibration points. Please
check the settings when necessary.
14 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.
15 Replacing Batteries
Before changing batteries, please read the following instruction and follow it step by step.
Not following the instruction may cause harm to the instrument or the
protection against ingress of water and dust may be lost!
Avoid unnecessary opening of the instrument!
1. Open the 3 Phillips screws at the backside of the instrument.
2. Lay down the still closed instrument, so that the display side
points upwards.
The lower half of the housing incl. the electronics should be kept
lying down during battery change.
This avoids loss of the sealing rings of the screw holes..
3. Lift upper half of housing. Keep an eye on the six function keys,
to be sure not to damage them.
4. Change carefully the two batteries (Type: AAA).
5. Check: Are the 3 sealing rings placed in the housing?
Is the circumference seal of the upper half sound and clean?
6. Close the housing, taking care that it is positioned correctly,
otherwise the sealing may be damaged. Afterwards press the
two halves together, lay the instrument with display pointing
downwards and screw it together again
Take care to screw only until you feel increasing resistance,
higher screwing force does not result in higher water
protection!
do not
touch
circuit
