Measurement And Control Technology; Chemical Fill Level - Behncke Control 1.3 Betriebsanleitung

6.9.3 Measurement and control technology

Reading the values of the measurement and control technology can be configured via the submenu
Extras/Measurement and control technology. It can read the pH value, chlorine value or redox value
(maximum two simultaneously). The read values are displayed on the start screen. If the filter pump
is switched off, the last value is "frozen" (represented by orange values). For example, the menu for the
pH value is shown in figure 11. The following parameters can be adjusted:
• Input: Defines the input terminals at which the values are to be read.
• Signal type: Defines whether the value should be transmitted by means of 0-10V or 4-20mA signal.
• Value at X: Defines the range of values of the transmission.
• Offset: Similar to sensor calibration, can be used for adjusting the value in the event of transmission
losses (max. adjustment -0.5 - 0.5).
pH value
Input
Signal type
Value at 4mA
Value at 20mA
There are fixed limit values for the read values in the control system. If they are exceeded or fallen short of,
an error message will be displayed. The limit values cannot be changed.
The power supply for the measuring and control system must be connected to terminal A5.
The measuring and control system release signal must be connected to terminal A11.
The following standard values are stored in the control system by default:
Measured value Lower alarm limit
pH 6.8
RedOx 650 mV
Chlorine 100 µg/l

6.9.4 Chemical fill level

Chemical fill level reading can be configured in the submenu Extras/Chemical fill level. The fill level of
chemicals can be recorded for a total of two mediums. The menu is shown in figure 12.
• Input: Defines the input terminals at which the values are to be read.
• Model: Defines whether the fill level is determined via an opener or closer contact.
• Name: Defines the name to be displayed in case the medium is empty. Here, you can choose between
Chlorine, pH-, pH+, active oxygen, flocculant, ACO and other as the name.
E2
4-20 mA
2.0
14.0
Figure 11: Measurement and control technology
Pool control system Control 1.3 / Operation
pH value
Offset
Upper alarm limit
7.6
1000 mV
1000 µg/l
0.00
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