Electrochemical Calibration - Tebas Efka270 Installation And Maintenance Instructions Manual

PARAMETER 16 PASSWORD
This parameter allows to enter a password (numeric value within 1 and 255) to protect the system from unauthorized access.
Once set and confirmed, the password will be requested to access the menus "Advanced configuration" and "Manual mode".
The instrument is supplied with no password set (P16=0).
Warning! If you forget the password, you need to send back the unit to the factory for a complete reconfiguration (out of
warranty)!
PARAMETER 17 FUNCTIONING OF THE ALARM OUTPUT
This feature is not used for this unit.
PARAMETER 18 FLOW FUNCTIONING
This parameter allows to select the functioning mode of the "flow" input, normally open "NO" (factory setting) or normally
closed "NC".
Warning! The inversion of this parameter compared to the default setting can determine the functioning of the device even in
the absence of flow!
PARAMETER 19 pH EQUILIBRIUM
This parameter allows to set a maximum waiting time before activating the redox (chlorine) adjustment, during which only the
pH adjustment is active. This time is counted from the start-up of the equipment, simultaneously to a possible start-up delay
set in P13, during which the entire measuring system is in stand-by.
In other words, the pH adjustment is activated after the start-up delay (P13) has elapsed, while the redox (chlorine)
regulation is activated when the pH reaches the set threshold (P02) or in any case at the end of the "pH Equilibrium" period.
For example, if a 1-minute start-up delay is set and you want the pH is adjusted for a maximum of 15 minutes before also
activate the redox (chlorine) regulation, the "pH Equilibrium" time should be set to 16 minutes.
To disable this feature, simply set the parameter to 0 (default).
Notes:
•
Once in configuration mode, if no button is pressed for 30 seconds, the unit automatically returns to the idle mode.
•
The system is factory configured with default values; you can delete undesired settings and restore the initial
configuration, using the "RESTORE" function (P15).

Electrochemical Calibration

1) Rinse the pH electrode with distilled water, then immerse it in the pH 7.01 pH buffer solution
Press the CAL key to enter the menu mode and use the  /
2)
 keys to select the option "IN1 CALIBRATION"
3) Press CAL again to confirm.
Press  to select the OFFSET calibration and confirm by
4)
pressing CAL.
5) The system automatically recognizes and displays the
buffer value (7.01 pH)
If necessary, use the  /  keys to adjust the calibration value.
6)
7) Press CAL to confirm the calibration, or ESC to quit the procedure and keep the previous calibration.
8) Rinse the pH electrode with distilled water, then immerse it in the pH 4.01 (or 9.01) buffer solution.
Press the CAL key to enter the menu mode and use the  /
9)
 keys to select the option "IN1 CALIBRATION".
10) Press CAL again to confirm.
11) Press  to select the GAIN calibration and confirm by
pressing CAL.
12) The system automatically recognizes and displays the
buffer value (4.01 or 9.01 pH).
13) If necessary, use the  /  keys to adjust the calibration value.
14) Press CAL to confirm the calibration, or ESC to quit the procedure and keep the previous calibration.
Notes
 If the system does not automatically recognize the buffers or the "Calibration Impossible" error occurs, it can be due to:
a) buffer solution contaminated or expired
b) electrode faulty or dead
c) connection cable or connector damaged
 If you try to calibrate the offset at a pH value too different from 7.00, the calibration is automatically ignored. Similarly if
you try to calibrate the gain with a buffer solution at a pH too close to neutrality, the procedure will fail.
 During normal operation, it is possible to view the offset (pressing ) and gain (pressing ) values, to check the
electrode status. The ideal values are an offset close to zero and a gain close to 1.000. When these values are close
to the max / min limits (offset: -1.00pH ... +1.00pH; gain: 0.750 ... 1.500), the electrode is contaminated or dead.
pH Calibration
I N 1 C A L I B R A T .
C A L > Y E S
I N 1 C A L I B R A T .

O F F S E T
I N 1 C A L I B R A T .
C A L > Y E S
I N 1 C A L I B R A T .

O F F S E T
P H
E S C > N O
P H

G A I N
P H
E S C > N O
P H

G A I N
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