User's Guide _______________________________________________________________________
86____________________________________________________________________ M210543EN-B
The output is the following:
SCALED FREQUENCY AVE (1 MIN)
499.9938
499.9880
>
DRY ON and WET
The
DRY ON
and
WET
commands are used to check and adjust the
operation of the Vaisala RAINCAP
®
Rain Sensor measurement.
DRY ON
The
DRY ON
command is used to set the reference level of the dry
signal for the RAINCAP
®
signal normalization calculation. When
giving the
DRY ON
command, the sensor surface must be dry and
also the weather conditions must be dry.
The output is the following:
DRD DRY OFFSET 715.6
The DRY OFFSET value must be between 700 and 900, when the
RAINCAP
®
hardware operates normally. The
DRY
command without
a parameter just shows this parameter.
WET
The
WET
command without a parameter shows the scaling factor that
normalizes the RAINCAP
®
signal change from the dry state to the wet
state to be 1.00. A typical value is close to 0.0015.
DRD WET SCALE 0.00169
The
WET ON
command is used to set the parameter. The
RAINCAP
®
measuring surfaces must be coated with a wet cloth or
immersed in water for at least 30 seconds, when the
WET ON
command is given. Make sure the wet cloth touches only the
RAINCAP
®
sensor.
The wet scale normalizes the measured signal range (DRY - WET) to
1.00.
