HND-P215
HND-P215 K06/0422
page 11
7.7.3
Sea Level Correction for Absolute Pressure Sensors
The device displays the absolute pressure. This is not necessarily the same like the
values given by weather stations! The weather stations‘ values are giving the
pressure at sea level. Usually, the sensor is placed above sea level and therefore,
if the value at sea level (zero) is to be measured, the pressure loss resulting from
the actual level above sea level has to be considered! To correct the measuring
display activate the „Sea-Level-Function“ (SL, p.r.t. chapter
7.7 Configuration
,
setting is only possible, if the abs. pressure sensor is connected to sensor socket
1). Then enter the altitude above sea level of the sensor‘s location in meters (Alti,
p.r.t. chapter 7.
7 Configuration
). When activated, the display shows the SL-arrow
and the device displays the pressure value at sea level.
Please note: When two absolute pressure sensors are connected,
the sea level function for both is corresponding to the setting of
sensor 1
7.7.4
Averaging Function
The averaging function concerns the display values (LCD and interface). It is
completely independent from the averaging of the logger function, please don’t mix
them up!
The averaging integrates the measuring values during a selectable period of time
and then calculates the average display value. It is independent from the selected
kind of measuring (slow, fast, peak detect).
As long as not enough values are collected (selected averaging time) to calculate a
average value, the upper display shows “----“, the lower display a ‘countdown‘.
During an active low-power-logging procedure the averring is always deactivated
Function of min/max-value memory during averaging:
- If averaging is activated and slow measuring is selected (rAtE-Slo), the min-/max-
value memory refers to the average display value.
- If averaging is activated and fast measuring is selected (rAtE-FASt or P.dEt) , the
min-/max-value memory refers to the internal measured values (fast peaks can be
detected). (>1000 Hz)
7.7.5
Power Off Time
If there won’t be pressed any key and no interface communication takes place for
the time of the power off time setting (P.Off), the device will be switched off
automatically to save battery power. If P.oFF = oFF then the automatic switch off is
deactivated.
7.7.6
Alarm
3 possible settings per channel: Alarm off (AL.oFF), on with horn sound (AL.on), on
without horn (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.
