Calibration; Breakdowns - Progres AGRONIC 52 Instruction Manual

has been reached. If the programming is by openings,
indicate the maximum conductivity value which is al-
lowed. Values go from 0.0 to 9.9. In the second section,
enter the difference there must be below the expected
reference so that the alarm activates because it has
reached a level of conductivity which is too low. If the
programming is by openings, indicate the minimum
conductivity value which is allowed. Values go from 0 to
9.9.
- Code U4: Delay in alarm detection. Indicate the num-
ber of seconds during which conductivity must be at an
alarm level before its activation. The value must be be-
tween 0 and 999.
- Code U5: Indicate whether the active programme must
be deactivated when a breakdown takes place (press
the "+" key for YES to be displayed on the screen) or it
must continue its working (press the "-" key for NO to
be displayed on the screen). In the last case, the en-
trance of another programme will not be allowed. This
value does not affect input nº 4, which will always stop
the active programme.
- Code U6: Alarm working and at stop. In the first sec-
tion, indicate the number of seconds the alarm must be
working in the cycle of alarm signal. The value must be
between 1 and 99 (0 means "do not start"). In the sec-
ond section, indicate the number of seconds the alarm
must be at stop in the cycle of alarm signal. These val-
ues must be between 0 and 99 and it only has sense if
outlet S5 has been programmed as alarm outlet (0
means alarm always working, if there is time in the pre-
vious section).

11. CALIBRATION

In the configuration of the user, codes U0 and U1 are
used to calibrate sensors. In order to carry out the calibra-
tion, take the sensor out of the pipe and leave in a place
where it has no contact with water. Next, go to code U0. On
entering in everyone of the codes, the code and value
which is expected from the sensor appears for a few sec-
onds. After these seconds, the screen blinks and displays
the reading which is being obtained from the sensor. If the
reading is stable enough and similar to the desired one, the
screen stops blinking after ten seconds, indicating that the
sensor has been calibrated. Pressing the "+" and "-" keys at
the same time the unit is forced to accept the value which
is being displayed on the screen at that moment. Once this
point has been reached in the code U0, deep or fill the sen-
sor with pattern liquid of 5.0 mS and press the "C" key to
change to code U1.
If the calibration of sensor is not to be done, press the
"C" key during the initial seconds or press the "C" key until
the code changes, when the screen is blinking.
In order to have a good calibration, the sensor and
the liquid have to be as close as possible to 25ºC degrees.
Then, the liquid value and the automatic compensation
that the sensor have will be correct. If the irrigation water is
cooler than 25ºC the sensor it should be taken out for sev-
eral minutes because the sensor has and inertia to the
temperature changes.
If a suitable calibration is not done in the first code,
the second one does not appear. So, to do a valid calibra-
tion of the sensor, it is necessary to do the two codes cor-
rectly.

12. BREAKDOWNS

When the unit detects a breakdown, because a non
desired level of conductivity has been reached or because
input 4 has been activated, the screen displays the consul-
tation code C0 and the information about the reason of the
breakdown in a blinking way. This message will disappear
on pressing the "C" key. If it has been indicated that the
programme has to stop, the action will take place and the
activation of another programme will not be allowed. If ,
apart from that, it has been indicated that outlet S5 works
as alarm outlet, it will activate according to what is indicat-
ed in the configuration of the user.
Option code
C 0
Indicator of the
alarm and nº of
programme
Origin of the alarm (CE, E4)
A 1 C E _
Type of alarm (low, a hy-
phen below, high, a hy-
phen above)
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