PH Meter

The pH meter is a core instrument for water quality testing, widely used in environmental monitoring, laboratory analysis, industrial production, agricultural irrigation, and aquaculture. Equipped with a dot-matrix LCD screen, it displays readings in real time and features temperature compensation, automatic locking, and relay alarm functions. With a measurement accuracy of 0.05 pH, it is compatible with 85~265VAC/9~36VDC power supplies and supports 4-20mA current and RS485 communication output, making it an indispensable standardized tool for water quality analysis.

  • Specification

Technical Specifications & Engineering Parameters

Display Interface High-definition backlit LCD with simultaneous display of pH, mV, temperature, and status
Measurement Range pH: -2.00 to 16.00 pH; ORP: -2000 to +2000 mV
Resolution & Accuracy Resolution: 0.01 pH / 0.1 mV; Accuracy: ±0.01 pH ± 1 digit
Temperature Compensation Automatic or manual compensation: -20°C to +130°C
Control Functionality Dual high/low relay contacts for automated acid/base neutralization dosing control
Wetted Sensor Body PPS / PVDF threaded housing (3/4" NPT male) with gel electrolyte and porous PTFE junction
Operating Pressure Max 0.6 MPa (6 bar) at 25°C
Analog & Digital Outputs Optically isolated 4-20mA output, RS485 serial communication with Modbus-RTU
Enclosure Dimensions DIN 96×96×110mm (Panel cutout 92×92mm)
Power Supply 100-240V AC 50/60Hz, power consumption < 5W
Environmental Protection IP65 sealed front panel, corrosion-resistant ABS housing

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