A10 Digital Residual Chlorine Meter

The A10 controller receives the signal from a matched chlorine probe. The membrane-covered electrochemical sensing described for the listed system belongs to the probe; the controller provides the configured display, calibration and output functions.

Commission and verify the chlorine measurement

• Confirm whether the supplied probe measures free or total chlorine, its reporting basis and the compatible controller. A chloride-ion electrode or an ORP reading is not a substitute for a chlorine-specific measurement.
• Use the specified flow cell, stable sample flow, pressure and temperature. Keep bubbles and deposits away from the sensing surface, and allow the documented conditioning and stabilization period.
• Check the sample pH and the supplied system’s pH-compensation method. Temperature compensation does not establish pH compensation or a separate pH measurement channel.
• Compare a fresh sample taken at the sensor sampling point with a suitable reference method for the same chlorine species, such as the applicable DPD procedure. Measure promptly; record sampling time, pH, temperature, flow and the reference result.
• Follow the model-specific zero/span and maintenance procedure. Verify after cleaning or membrane/electrolyte service where applicable; do not set a universal service interval for every water matrix.

Confirm the current probe and controller instructions before dosing-system integration. Free chlorine, combined chlorine and total chlorine require the appropriate measurement configuration and reference method.

The existing tables include combined sensor/controller references. Confirm the exact ordered configuration: a listed pH interval does not establish an independent pH input, and a compensation interval does not by itself establish the probe’s process-temperature rating. Panel dimensions, mains supply and relay functions describe controller options, not a bare probe. Do not apply the listed AC supply to a probe without its own approved wiring instructions.

Confirm the supplied controller functions

• The listed display, slope adjustment, factory reset and relay functions belong to the matched controller configuration; they are not functions of every bare probe.
• The existing option list cites NTC10K or PT1000 temperature inputs. Match the supplied temperature element and wiring; do not interchange them without the controller’s instructions.
• For a listed 4-20mA output, confirm measurement scaling, active/passive wiring, isolation and load. For optional RS485, obtain the actual supported protocol and register map; do not assume full Modbus compatibility from the interface name.
• Confirm alarm set points, hysteresis and relay fail-state for the process. Request the conditions and retained information for any power-failure protection claim >10 years.