Jesco EASYPOOL SMART 02, Руководство по эксплуатации

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18 | EASYPOOL SMART 0 Operating Manual
Controller
Menu 1 and 2: Main menu and sub-main menu
mg/l pH ºC
039 702 22.3
1
0 1 2
menu 2
trend
calibration
setpoint
ESC
status
main-menu
Menu 1: The main menu and starting point for reaching all further sub-menus
and their functions: With the displays for
a
free chlorine,
b
pH value and
c
temperature (°C).
Menu serves as a sub-main menu (see menu )
mg/l pH
039 702 22.3
ºC
2
alarms
controller
ESC
menu 2
recorder
service
Menu : Extension of the main menu
You can access all other sub-menus through the main menu
(menu1) and the sub-main menu (menu ).
Menu Key Comment on sub-menu
1 Main menu
ESC Return to the standard display
1.1 Target values Set the default values of the configured controller
1. Calibrate Calibrate all sensors connected to the system
1.3 Trend Show measurements as line diagram and zoom
at wish
1.4.1 Status Displays all important parameters for information
Menu Change to other menus
2 Menu 2
ESC Return to the main menu
.1 Controller Sets the characteristics of all configured controllers
(this menu can be password-protected).
. Alarms Assigning the alarms to the related measurement
signals
.3 Recorder Sets the zooming function for the analog outputs
0/4 … 0 mA
5 Service Further adjustment options
(this menu can be password-protected)
Table 4.4..: Overview of the TOPAX DX SMART sub-menus.
4.5 Measurement value inputs
This chapter exemplifies the chemical and physical correlation,
which is necessary to understand the behaviour of the input
measuring values.
The input measuring values are examined for:
Free chlorine
pH value
REDOX potential
Temperature
Conductivity
In doing so an important element is the calibration of the sen-
sors.
NOTICE!
When set up the unit for the first time, care should be
taken to perform individual calibration of each output
immediately after connecting the sensors in the sys-
tem. The controller monitors all calibration processes
based on reasonable parameters (zero point and
transconductance). The measured data is recorded.
Non calibrated and „Roughly calibrated” value inputs
are marked out in clear text. „Roughly calibrated”
values are shown on the main display in red.
NOTICE!
Please note that time delays are possible due to the
initial running times of the sensors.
The limits of „Roughly calibrated” are:
measurement value limits
Transconductance pH value < 53 or > 61 mV/pH
zero point pH < -40 or > 40 mV
REDOX transconductance < 0.85 or > 1. mV / mV
Chlorine transconductance for amperom.
measuring cell < 3 or > 100 µA / mg/l
The remark „roughly calibrated” sheds light on the calibration
quality and the conditions of the electrochemical electrodes. If
necessary you can look for calibration faults and replace the sen-
sors at the appropriate time. You can use the sensors unchanged
until replacement. The controller will continue to work normally.
NOTICE!
Correct calibration is a pre-requisite for the safe op-
eration of the water sampling station. The calibration
must be checked at regular intervals.
4.5.1 Free chlorine measurements input
The free chlorine reading depends on the pH value of the water
sample. This is based on the reaction of the chloride ions at dif-
ferent pH values. This relationship determines the chlorine dis-
sociation curve (see Fig. 4.5.1).
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