HD2013
- 18 -
V1.5
Reset
Command Description
PWD
RES
Resets the partial rainfall counter.
Reply of the instrument: &|
Yes
HRS
Resets the electronic board (with consequent reset of all the measur-
ing counters).
Yes
Correction of the measurement
To increase the measurement accuracy, a measurement correction table as a function
of the rainfall rate can be stored in the rain gauge.
The correction is useful because during the emptying time of the tipping bucket, rain
is not collected from the bucket and the amount of rain in the absence of correction is
therefore underestimated. The correction to be made is greater the higher is the rain-
fall rate (greater number of cycles in the time unit).
The rain gauge allows you to set ten multiplication factors (numbered from o to 9) of
the nominal resolution, each corresponding to a range of rainfall rate.
By default, the multiplication factors are all set to 1. As option, you can request
that the correction factors of the specific rain gauge are already stored.
Command
Description
PWD
TE
Enables the measurement correction as a function of the rainfall rate.
Reply of the instrument: &|
Yes
TD
Disables the measurement correction as a function of the rainfall
rate.
Reply of the instrument: &|
Yes
TR
Reads the enabling state of the measurement correction as a func-
tion of the rainfall rate.
Reply of the instrument:
0 if the correction is disabled
1 if the correction is enabled
No
CTS
Starts the correction table writing procedure.
Reply of the instrument: CALIBRATION_STARTED
Yes
CTE
Ends the correction table writing procedure and saves the entered
values.
Reply of the instrument: CALIBRATION_ENDED
Yes
CTWi+r…r+k…k Set the multiplication factor of index i to the value k…k. The multipli-
cation factor is applied if the rainfall rate is between r…r (considered
in mm/h or in/h depending on the unit of measurement set in the in-
strument) and the rate value defined for the multiplication factor of
index i+1 (see the example below).
The multiplication factor must be between 0.500 and 2.000. The
rainfall rate must be between 0 and 7200.
Reply of the instrument:
&| if the parameters are correct
? if the parameters are not correct
Yes
