Lambrecht Ser[LOG], Руководство оператора

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LAMBRECHT meteo GmbH Ser[LOG] Manual Page 62 of 129
Standard deviation (wind speed) Calculation of the standard deviation of the wind speed.
Variance (wind direction) Calculation of the variance of the wind direction.
Variance (wind speed) Calculation of the variance of the wind speed.
Wind direction from sin / cos Calculation of wind direction from cosine and sine signal.
Compass corrected wind direction Calculation using HDT data set
Derived value Output of 1/0 or 0...100 % based on threshold value
Vapor pressure Calculation from temperature, humidity, and air pressure
Wet bulb temperature Reverse calculation from temperature, humidity, and air pressure
Status switching output 1 with triggered switching output
0 with not triggered switching output.
The input parameters for the respective formula are assigned during configuration of the measurement
channels in the mask "Definition of virtual sensor".
5.3.5.5.8 Special function for sensor definition
If in the "Sensor Definition" window for the limit values it is set that an error should be triggered when
the limit value is exceeded or underrun, then this error can be intercepted and assigned to a "special
function" in the frame of the same name.
By default, the special function is set to "Off" and is therefore deactivated. The following special functions
are available:
Value < Minimum ==> 0 If the value falls below the permissible
minimum value, the value is set to "0". In
this case, the field "Underrun" must be
set to "Error".
Wind direction measurement with potentiom-
eter
When measuring the wind direction with
a potentiometer with a gap, the direction
value is set to North (360°) when the po-
tentiometer is in the gap. In this case,
the fields "underrun" and "overrun" must
both be set to "error".
Wind direction measurement with potentiom-
eter N18
When measuring the wind direction with
a potentiometer with a gap turned by
180°, the direction value is set to North
(180°) when the potentiometer is in the
gap. In this case, the fields "underrun"
and "overrun" must both be set to "er-
ror".
Wind direction N18 The output signal of the wind direction
sensor is rotated by 180°.
Service switch If a status input is defined as a "service
switch", the mean value storage is sus-
pended as long as the service state is >
0.