MIK-PH8.0 pH ORP meter

The MIK-PH8.0 is a panel-mounted online industrial pH/ORP analyzer used in chemical, metallurgy, environmental protection, food, agriculture and water treatment applications. It provides 4–20 mA, RS485 (Modbus-RTU) and relay outputs for pH control and remote data transmission.

It measures pH or ORP, together with temperature.

• pH: -2.00 to 16.00 pH; accuracy ±0.02 pH (glass pH sensor)
• ORP: -1999 to 1999 mV; accuracy ±0.1% FS
• Temperature: -10.0 to 130.0 °C

Yes. The MIK-PH8.0 supports antimony pH sensors with an accuracy of ±0.2 pH. Antimony electrodes are generally used where glass electrodes are unsuitable.

Yes. The MIK-PH8.0 is the analyzer and works with a pH or ORP electrode. Asmik offers a full range of pH and ORP electrodes for media such as sewage, pure water and drinking water, including the MIK-PH7001 flat pH sensor for flue gas desulfurization.

pH glass electrodes have a very high internal resistance. A high input resistance of at least 10¹² Ω ensures the meter draws almost no current from the electrode, so the measured potential is accurate and stable.

• Sensors: NTC10K or PT1000 (PT100 optional)
• NTC10K accuracy: ±0.3 °C from -10 to 60 °C; ±2.0 °C from 60 to 130 °C
• PT1000 / PT100 accuracy: ±0.3 °C
• Compensation mode: manual or automatic

• Analog output: 1 × 4–20 mA (2 outputs optional); maximum loop 750 Ω; ±0.2% FS
• Communication: RS485, Modbus-RTU
• Alarm relays: 2 channels, normally open, 245 VAC 5 A max.

Yes. The two alarm relays can switch acid or alkali dosing pumps at set points, and the 4–20 mA output can be used by a PLC for proportional control. See our metering pumps for dosing.

The MIK-PH8.0 includes a cleaning setting that supports manual cleaning and a configurable cleaning interval. Please tell us your cleaning system requirements so we can confirm the configuration.

Yes. It stores 100 sets of records. The recording interval can be configured, and records are stored in first-in, first-out (FIFO) order.

It has a 4.3-inch screen, and the interface is available in Chinese and English.

100–240 VAC, 50/60 Hz, 5 W max.

• Overall dimensions: 144 × 144 × 115 mm
• Panel cutout: 138 × 138 mm
• Panel thickness: 1.0–5.0 mm
• Weight: 0.68 kg

The ingress protection rating is IP65.

• Operating temperature: 0 to 60 °C
• Storage temperature: -20 to 70 °C
• Relative humidity: 10% to 85% RH (no condensation)

Compared with the MIK-PH6.5 and MIK-PH163S, the MIK-PH8.0 has a larger 4.3-inch screen and 144 × 144 mm housing, IP65 protection, a wider pH range (-2 to 16 pH), antimony electrode support, an optional second analog output, a cleaning interval setting and data recording. It is powered by 100–240 VAC.

Calibration is performed with standard buffer solutions that bracket your process pH. Asmik standard pH calibration solutions are available in sets of 4.00 / 7.00 / 10.00 or 4.00 / 6.86 / 9.18. Follow the calibration procedure in the manual.

• Mount the meter in a panel 1.0–5.0 mm thick, using the 138 × 138 mm cutout.
• Keep the electrode cable as short as practical and away from power cables and motors.
• Install the electrode where the sample is representative and the glass membrane stays wet.
• Connect the temperature sensor for automatic compensation.

Please follow the installation manual or contact our engineers for site-specific requirements.

It is used in chemical, metallurgy, environmental protection, food, agriculture, and industrial and water treatment processes for pH/ORP monitoring and control.

To help us select the correct configuration, please provide:

• Measured parameter (pH or ORP) and medium
• Electrode type (glass or antimony) and whether electrodes are required
• Process temperature and temperature sensor type
• Number of analog outputs and relay requirements
• Cleaning requirements
• Installation environment
• Quantity

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