MIK-ORP6050 ORP sensor

The MIK-ORP6050 is a plastic-body ORP (oxidation-reduction potential) sensor with a measuring range of -2000 to +2000 mV and a 3/4" NPT installation thread, for online ORP measurement in industrial and water treatment applications.

ORP (oxidation-reduction potential) indicates the oxidizing or reducing ability of a solution, measured in millivolts (mV). A positive value indicates an oxidizing solution, and a negative value indicates a reducing solution.

An ORP sensor works as a primary (galvanic) cell, which converts chemical energy into electrical energy. Its voltage, called the electromotive force (EMF), is formed by two half-cells: a measuring electrode and a reference electrode. The measuring electrode has a sensitive layer of inert metal that can absorb or release electrons, and the potential difference between the two half-cells is the ORP value.

The sensitive layer of an ORP electrode is an inert metal, usually platinum or gold. Please tell us your application so we can confirm the sensing material for your sensor.

The measuring range is -2000 mV to +2000 mV.

• Stability: ±4 mV / 24 h
• Membrane resistance: ≤10 kΩ

• Temperature: 0 to 60 °C (with general cables)
• Pressure: 0 to 6 bar at 25 °C

The sensor has a 3/4" NPT thread for mounting in suitable fittings, flow cells or immersion assemblies.

ORP is commonly used to monitor disinfection and oxidation processes (for example with chlorine or ozone), reduction processes in electroplating and industrial wastewater treatment, swimming pool and cooling water treatment, and biological wastewater processes.

pH measures hydrogen ion activity (acidity or alkalinity), while ORP measures the oxidizing or reducing ability of the solution. ORP sensors use an inert metal measuring element instead of a pH-sensitive glass membrane. For pH measurement, see the MIK-pH6001 or MIK-pH6002.

ORP reflects the overall oxidizing ability of the water and is often used to monitor disinfection, but it does not directly give a chlorine concentration in mg/L. For chlorine concentration, see our chlorine sensors and transmitters.

Use a meter with an ORP input, such as the MIK-PH6.5, MIK-PH163S, MIK-PH8.0 or MIK-DC-P2, all of which support ORP measurement.

ORP readings are not usually temperature-compensated in the same way as pH, because the temperature effect depends on the specific chemical system. For consistent results, compare readings at similar temperatures and follow the recommendations of your meter.

ORP sensors are generally checked with an ORP standard solution of known potential. If the reading deviates beyond your tolerance, clean the sensor and check again. Please follow the procedure of your meter.

• Keep the metal sensing surface clean; deposits and oils affect the response.
• Keep the reference junction wet and store the sensor with its protective cap when not in use.
• Check the reading regularly against a standard solution.

To help us select the correct configuration, please provide:

• Application and medium
• Expected ORP range
• Process temperature and pressure
• Installation method and fittings
• Cable length
• Matching meter (if required)
• Quantity

Send your requirements to info@asmik.com or contact us via WhatsApp at +86 13325716921.