Expert in Water Quality Measurement and Water Treatment Project Since 2007
High Quality Online Ph Meter for Plants
Product Overview
- Model: PHG-2081S High Quality Online pH Meter for plants (digital pH/ORP meter).
- Purpose: Continuous online measurement of pH, ORP (mV) and temperature for process and environmental monitoring.
- Hardware: Panel/wall/pipe-mounted analyzer with digital pH/ORP sensor that communicates via RS485 Modbus.
Product Features
- Digital sensor with built-in RS485 Modbus communication and on-sensor calibration memory (calibration data stored in the sensor).
- Measurement ranges: pH -2.00 to 16.00; ORP -2000 to +2000 mV; temperature -30.0 to 130.0 °C.
- Accuracy/resolution: ±0.01 pH (0.01 pH resolution), ±1%FS for mV (1 mV resolution), ±0.5 °C (0.1 °C resolution).
- Outputs and control: two isolated 4–20 mA outputs (pH/ORP and temperature), RS485 Modbus RTU, and three relays (two high/low alarm relays + one cleaning relay).
- Data capabilities: onboard data recording/datalogger and history curve viewing; IP65 protection for harsh environments; power 90–260 VAC.
Product Value
(benefits to users)
- Reliable, high-precision continuous monitoring for better process control and regulatory compliance.
- Reduced downtime and service cost because calibration is saved in the sensor and predictive-maintenance features help plan interventions.
- Remote integration and long-distance installation via RS485 Modbus enable centralized monitoring and automation.
- Traceability and troubleshooting made easier with recorded historical data and trend curves.
- Flexible installation options (panel/wall/pipe) and robust design enable deployment across many industrial plant environments.
Product Advantages
(what differentiates it)
- Digital sensor architecture with on-sensor calibration and Modbus gives more accurate, consistent readings and simplifies sensor replacement.
- Predictive maintenance capability and saved calibration data reduce maintenance time and total cost of ownership.
- Industrial-grade protection (IP65), isolated analog outputs and multiple relays for reliable control in harsh plant conditions.
- High measurement precision and resolution suitable for demanding process-control applications.
- Compact, versatile mounting and standard industrial communications for easy integration into existing control systems.
Application Scenarios
- Wastewater treatment and sewage monitoring.
- Drinking water distribution and environmental water monitoring.
- Fermentation, food & beverage production process control.
- Industrial process water, chemical plants and utility water systems.
- Aquaculture, pools, laboratories and any continuous pH/ORP monitoring application requiring remote integration and data logging.
