MIK-PH163S pH ORP meter

The MIK-PH163S is an online industrial pH/ORP analyzer with 4–20 mA analog output and relay outputs, with RS485 digital communication for remote data transmission. It is used for pH monitoring and control in industrial processes and water treatment.

It measures pH or ORP, together with temperature for compensation.

• pH: 0.00–14.00 pH, accuracy ±0.02 pH
• ORP: -2000 to +2000 mV; accuracy ±1 mV from -1000 to +1000 mV, and ±2 mV from -2000 to -1000 mV and +1000 to +2000 mV

Yes. The MIK-PH163S is the analyzer and works with a pH or ORP electrode. Asmik offers a full range of pH and ORP electrodes for different media, including the MIK-pH6001, MIK-pH6002 and MIK-ORP6050.

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.

• Sensor: NTC10K
• Accuracy: ±0.3 °C from -10 to 60 °C; ±2 °C from 60 to 130 °C
• Compensation range: -10 to 130 °C, manual or automatic

• Current output: isolated 4–20 mA, freely assignable to the pH/ORP range; maximum loop 750 Ω; ±0.2% FS
• Alarm relays: 2 channels, pickup/breakaway, AC 250 V / 3 A
• RS485 communication with Modbus-RTU

Please confirm the RS485 requirement when ordering.

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

• AC: 220 V ±10%, 50 Hz
• DC: 24 V

Power consumption is ≤5 W.

It has a 2.8-inch monochrome LCD with a resolution of 128×64.

• Overall dimensions: 96 × 96 × 113 mm
• Panel cutout: 92 × 92 mm
• Weight: 0.5 kg

The 96 × 96 mm front size fits standard panel openings.

Please tell us your installation environment. For outdoor or wet locations, install the meter in a suitable protective enclosure.

• Working temperature: 0 to 60 °C
• Relative humidity: 10% to 85% RH (no condensation)
• Storage temperature: -15 to 65 °C; storage humidity 5% to 95% (no condensation)
• Altitude: below 2000 m

The MIK-PH163S is more compact (96 × 96 × 113 mm, 92 × 92 mm cutout) and uses NTC10K temperature compensation. The MIK-PH6.5 (100 × 100 × 150 mm, 92.5 × 92.5 mm cutout) additionally supports Pt1000 or customized Pt100 temperature sensors and 110 VAC power. Both measure pH/ORP with the same ranges and accuracy.

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 using the 92 × 92 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 NTC10K temperature sensor for automatic compensation.

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

It is used for pH/ORP monitoring and control in industrial processes and water treatment processes, where a compact panel-mounted analyzer with remote data transmission is needed.

To help us select the correct configuration, please provide:

• Measured parameter (pH or ORP) and medium
• Process temperature
• Electrode requirements (if needed)
• Output requirements (4–20 mA, relays, RS485)
• Power supply (220 VAC or 24 VDC)
• Installation environment
• Quantity

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