APT11 Industrial pH/ORP Meter
The Industrial pH/ORP Meter collects pH and temperature signals from the solution via a pH electrode. The signals are processed by the monitor and converted into a standard pH value, which is displayed and transmitted through relay outputs, analog signals (4-20mA, 0-5V, etc.), and RS485 communication for control and monitoring.
- Measure rangepH: 0-14 pH, ±0.02pH; ORP: -1000 ~1000mV, ±1mV
- Input Resistance≥10~12Ω
- Power supply220V±10%,50Hz/60Hz
- Output4-20mA, RS485, Modbus-RTU, Relay
Industrial pH/ORP Meter


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Fast response and highly accurate pH/ORP sensor
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Designed for harsh environments, maintenance-free, and cost-saving
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Dual 4-20mA and RS485 output options
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Built-in data recording function, allowing users to easily view historical data and trend curves
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With digital pH or ORP Sensor, the sensor is directly with RS485 Modbus.Calibration will be saved in pH or ORP sensor.
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This analyzer provides RS485 Modbus RTU communication and datalogger
The APT11 Industrial pH/ORP Meter provides continuous monitoring of the pH or ORP value in solutions. It offers a pH measurement accuracy of ±0.02 and an ORP measurement accuracy of ±1mV. The device supports electrode calibration and features 4-20mA analog signals, RS-485 digital signals, and relay outputs. It is suitable for industrial processes and water treatment applications, with support for remote data transmission.
Technical Parameters
Product | Industrial pH/ORP Meter |
Model | APT11 |
Measure range | pH: 0-14 pH, ±0.02 pH |
ORP: -1000 ~1000mV, ±1mV | |
Measuring medium | Liquid |
Storage temperature | -40℃~70℃ |
Current Output | 4-20mA,current output load: max. 500Ω |
Communication | RS485, Modbus-RTU |
Measurement temperature | -20℃~50℃ |
Relative humidity | ≤95%RH (no condensation) |
Protection level | IP65 |
Rela | Three-way (maximum load: 5A/250VAC or 5A/30VDC) |
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