H31.0.31.6C-06
User’s Manual GMH3150
page 6
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2.6 Alarm
There are three possible settings: Alarm off (
AL. oFF
), on with horn sound (
AL. on
), on without sound (
AL. no.So
).
Following conditions will display an alarm, when the function is activated (on or no.So):
-
Value is below lower (AL. Lo) or above upper alarm rail (AL.Hi).
-
Sensor error (Sens Erro)
-
Low battery (bAt)
-
Fe 7: System error (always with sound)
In case of an alarm and when polling the interface the prio-flag is set in the returned interface message.
2.7 Real Time Clock
The real time clock is used for the logger function: Recorded values are also containing the point of time,
when they were measured. Please check the settings when necessary.
If the battery was replaced the refering menu ‚CLOC‘ will automatically be started.
3 Measuring Of Water Level – Display Unit [m]
(only for devices with ‚m‘ printed below the display)
When using a suitable waterproof pressure sensor the unit [m] for meters of water can be set in the menu
“Unit“. 10m of water are roughly 1 bar over pressure. Measurings can be made e.g. like described below :
•
With abs. pressure sensor (SL oFF!): Press ‚Tara‘ when sensor is at ambient air and then bring sensor to
the depth to be measured. The display shows now the depth in [m].
•
With rel pressure sensor: bring tube connection for lower press. in contact to ambient air by means of a
tube (no water contact!) and bring the sensor with its open press. connection for higher pressure to water
depth to be measured (display and is compensated for pressure changes in ambient air).
