EN
10
3. SERVICE
After switching the transducer on, the work state diode should light in
red for a moment, next it should light in green.
Fig. 4. View of the P20H transducer
The write confirmation in registers is signaled by a short extinction of the
state diode. Till the time to obtain the required number of correct mea-
surements (acc. to the table 1), the arithmetical mean value of measu-
rements which have been doing so far, is converted. The measurement
of values beyond the measuring range causes the overflow setting and
begins the counting of correct measurements from the beginning. The
measurement is carried out on the mowing window principle. The time
is set up on 1 s by the manufacturer.
When the averaging time is less than 10 sec – the single measurement
lasts ca 30 ms however, above 10 sec, the measurement lasts ca 0.5 sec.
Averaging time
0.2s 0.4s 0.6s 0.8s 1s
3s
5s 10s 15s 20s
Number of averaged
measurements
6
13
20
27
34 103 172 20
30
40
Table 1
Diode of the transducer work state:
- the state diode lights in green – normal work,
- the state diode lights in red – improper work
parameters; one must configure the transducer
again,
- the state diode pulsates in red – lack of calibration
or the non-volatile memory is damaged; one must
return the transducer to the manufacturer.
Diodes only in the option with RS-485 interface:
- the RxD diode lights – reception of data,
- the TxD diode lights – transmission of data.