Maximum Change; Calibration Of The Rainfall Sensor - La Crosse Technology WS-2510 Operating Instructions Manual

The effect of the
representation of
the mean, above
without a sliding
mean and below
with a smoothing
factor of 20

Maximum change

This input field is also available for each of the temperature/humidity sensors,
for the air pressure sensor and for the rain sensor. Here, you can set the maximum
possible change between two measurement transmissions, in which case any
greater changes will be rejected as invalid.

Calibration of the rainfall sensor

The rainfall measuring system is delivered ex-works with a very high accuracy,
so that normally no calibration is required and the pre-set calibration factor can
be retained. A calibration is only necessary when very high accuracy is required
for professional applications.
Before calibrating the rainfall sensor, any total overall rainfall value should be set
back to zero in the weather display.
Then, within a time period of your choice, exactly 100 ml of water is poured very
slowly into the funnel of the rainfall sensor.
CAUTION! Pouring quickly will falsify the measurement result! Slowly pour
the water into the funnel so that water is at no time resting in the funnel.
Due to the funnel diameter, i.e. 130 mm or 0.0133 m
water must give a rainfall target value of 7.5 l/m
After all of the water has run through, you should wait approximately 10 minutes
before reading off the value from the radio interface. After the weather display
has been called up once more, the actual value will appear in the display, which
ideally will correspond to 7.5 l/m
The relationship between the target value and the actual value indicates the
calibration factor. But because a calibration factor could have been entered
previously, or because of the pre-set value of 300 ml per rocker movement, this
must be taken into account in the calculation.
34
2
2
.
2
surface area, 100 ml of
.