Professional Free Chlorine & pH measuring system with Amperometric electrode in swimming pools, public swimming pools, hotels and water treatment systems. The system includes the advanced NX7000 free chlorine meter with LCD digital display and AM or MT series electromagnetic dosing pumps pre-installed on a common panel. Proportional dosing by measuring pH and Redox and appropriate 4-20 mA signal to the pumps.

It has an electrode mounting case (pH, Redox and temperature) with a built-in amperometric self-cleaning electrode for free chlorine measuring and a flow control system for sampling water for reliable and safe operation. Simple and fast to install. Ready to use.

Options for NX7000 Instrument

•  Measurement of Free Chlorine (Cl-free) (1 parameter)
• Measurement of Free Chlorine (Cl-free) and pH (2 parameters)
• Measurement of Free Chlorine (Cl-free), pH and Redox for confirmation (3 parameters)
• Measurement of Free Chlorine (Cl-free), pH and Total Chlorine (Cl-total) (3 parameters)

Pump Number Options

• System without pumps
• System with one (1) pump for regulation of Free Chlorine
• System with two (2) pumps for regulation of Free Chlorine & pH

Other options and configuration available on request.

Technical Characteristics of Instrument NX7000

• Free Chlorine: 0 ÷ 0.50 / 0 ÷ 1.00 / 0 ÷ 2.00 / 0 ÷ 5.00 / 0 ÷ 10.0 / 0 ÷ 20.0 / 0 ÷ 200 ppm
• pH: 0 ÷ 14.0
• Redox: -1500 ÷ + 1500 mV
• LCD 4-line control screen of 20 characters.
• Constant or proportional flow adjustment with Free Chlorine (ppm) measurement
• Adjustment of constant or proportional flow by measuring pH
• Temperature compensation with PT100 probe
• 3 power supply relays for dosing pumps
• 2 analog signal outputs 4 ÷ 20 mA for pumps
• 2 dry contact relays for alarm
• RS485 serial port with Modbus RTU communication protocol
• Manual or automatic calibration
• Quick connection for level float.
• Operator password.
• Remote control On/Off.
• Statistical data.
• Over Feed Alarm (OFA).
• Maximum power time alarm.
• IP65 protection.

Technical Characteristics of Pumps

• Flow up to 50 l / h.
• Pressure 12 bar.
• Manual flow rate setting via potentiometer (0 ÷ 100%) and (0 ÷ 20%).
• PVDF pump head suitable for almost all chemicals.
• PTFE diaphragm lifespan over 5 years.
• Ball valves ceramic and valve seats from FPM or EPDM.
• Automatic suction.
• Maximum suction height 1,5 m.
• Quick connection for level control probe.
• Integrated manual vent valve.
• Operation status Power-ON with (LED).
• Level Alarm (LED).
• Standard power supply 100÷240 Vac 50/60 Ηz (option 24÷48 Vac).
• Protection degree ΙΡ65.
• Quick installation on wall or on vessel with fixing bracket.
• Temperature: 5 έως 45 °C.
• Full chemical compatibility.

Panel with 1 x free-Cl/pH/Redox instrument, 0 ÷ 2 x AM or MT series pumps, 1 x Electrode mounting case with sampling water flow control device.

A) 2 x 2 m PVC suction tube.
B) 2 x 4 m PE delivery tube.
C) 2 x PVDF Injection head.
D) 4 x Head connector.
E) 2 x PVDF Suction foot valve.
L) Buffers pH 7 & pH 4 and 465 mV.