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ENGLISH
95
OPERATIONAL FUNCTIONS OF THE PLUS "METERING" PUMP
Selecting the configurations: ST and ST-T, the metering pump is placed in the control mode and in function of the
electrochemical parameter type selected (pH, RX, ppm Cl, ppm), it intervenes maintaining the correct set value. Once the
instrument configuration is set, you must select one of the following operating modes:
Manual
pH mode
RX mode
CI mode
ppm Mode
The pump instrument operates within the following measurement ranges:
pH measurement
0,00
14,00
RX measurement
-1000
+1400 mV
Cl measurement
0
2, 0
10, 0
20, 0
200 ppm
ppm measurement
0
2, 0
10, 0
20, 0
200
Temperature measurement
0
100 °C (PT100)
Manual
Mode of operation similar to that described in the "proportional" version.
pH mode
In pH mode, the pump must be connected to a pH sensor and through the proper configuration of the setup menu. The
device is responsible for ensuring the maintenance of the set-point value and the management of all the devices connected
to the pump terminal box.
The pump offsets the displayed value in reference to the value of the measured temperature (PT100) or as reference it
uses the value set manually by the user.
In the configuration menu of the pH mode you can carry out the following settings:
Setpoint Configuration.
Probe Configuration.
Temperature value Setting (present if the MANUAL mode is enabled).
Current Output Setting
Sensors made from either glass or plastic material can be used. Connect the probe as shown in Fig. 10
1
2
3
1.
pump power supply cable
2.
electrode
3.
BNC connector
Fig. 10 – Electrodes connection pH and REDOX