Two Channel Controller TOPAX DE
Important values securely under control
In a Nutshell
- Measuring free chlorine with open amperometric 2-electrode measuring cell, 3-electrode measuring cell with potentiostatic control or diaphragm-covered measuring cells
- Measurement of the pH value and temperature
- Redox measurement for disinfection control
- Display of the effective chlorine according to dissociation curve
- 4 measurement values and 5 digital inputs, galvanically isolated
- Analogue outputs 0/4 … 20 mA for measurement or control values, galvanically isolated
- 2 controllers for controlling the parameter for disinfection and
the pH value - pH value compensation of the chlorine value
- Temperature compensation of the pH value
- Modbus protocol via RS 485
- Memory card for data logger and logbook
- Very easy to operate, guided start up
- Large display with operator guidance in plain language, a flat, multilingual menu structure and context oriented online help
- Integrated 24 h screen writer
- Display of the quality of the measuring cells during calibration
- Validity check during calibration
Technical Details
| Display and controls |
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| Measuring input for free chlorine Measuring cell-options |
Amperometric 2-electrode measuring cells, measuring range adjustable from 0 … 10 mg/l | ||
| Amperometric 3-electrode measuring cell with potentiostatic control, measuring range adjustable from 0 … 2 mg/l | |||
| Diaphragm-covered measuring cell, 0/4 … 20 mA, measuring range according to the sensor (max. 10 mg/l) |
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| Further measurement inputs |
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| Digital inputs | Inputs for:
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| Connection of the inputs and outputs | By means of terminal blocks, max. 1 mm2 | ||
| Control characteristic for 2 inputs (disinfection and pH value) |
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| Disturbance variable (optional) | 0/4 … 20 mA programmable, disturbance factor: 0.1 … 10 times amplification | ||
| Controller outputs (each as per the configuration) |
3 digital outputs, optocoupler, 48 V DC; 250 mA, pulse frequency 10 … 350 pulses/min. | ||
5 relay outputs programmable as
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| Analogue outputs 0/4 … 20 mA, max. load 500 Ohms | |||
| Alarm output | Relay output as collective alarm for the measured variables of free chlorine, pH value, Redox potential, temperature as potential free changer | ||
| Measurement value alarm, min. and max. alarm freely adjustable. Time delay adjustable max. 200 minutes | |||
| Safety cutout To prevent overdosing (Y-alarm), time delay adjustable: max. 200 minutes |
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| Current outputs for remote transfer of the measured value to the inputs | Current outputs for each measured value 0/4 … 20 mA possible spreading; max. load 500 Ohms potential free | ||
| Significant geometric spreading: >50 % with measuring input free chlorine and 0/4 … 20 mA >10 % during measurement input of pH value and Redox potential |
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| Interface (optional) | Modbus protocol via RS 485 | ||
| Load capacity of the relay | 230 V / 50 Hz, 3 A | ||
| Protection class | IP65 with locked screw connections | ||
| Ambient temperature | °C | -5 … +45 | |
| Supply voltage | VAC | 90 … 264, short circuit and overload-proof | |
| Power consumption | VA | 24 | |
| Housing dimensions | mm | 302 x 231 x 107 (W x H x D) wall-mounted housing | |
| Weight | kg | 2 … 2.5 |
Subject to technical changes
Download
LJ-TOPAX_DE-DE-BA.pdf- LJ-TOPAX_DE-DE-PI.pdf
- LJ-TOPAX_Uebersicht-DE-UE.pdf
LJ-TOPAX_DE-EN-BA.pdf- LJ-TOPAX_DE-EN-PI.pdf
- LJ-TOPAX_Overview-EN-UE.pdf
BA: Operation instruction
PI: Product information
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