Online Industry pH ORP Controller pH Transmitter
>>Overview
The Industrial Online pH/ORP Meter is a microprocessor-based water
quality monitoring and control instrument. Configured with various
types of pH or ORP electrodes, it is widely used in power plants,
petrochemicals, metallurgy, electronics, mining, papermaking,
bio-fermentation engineering, pharmaceuticals, food and beverage,
environmental water treatment, aquaculture, modern agricultural
cultivation, and other industries. It provides continuous
monitoring and control of pH (acidity/alkalinity), ORP
(oxidation-reduction potential), and temperature values in aqueous
solutions.
>>Features
• Dot-matrix LCD display
• Smart menu operation
• Multiple automatic calibration functions
• Versatile signal output options, 4-20mA, RS485
• Data recording & curve display
• Differential signal measurement mode for stable and reliable performance
• Manual/automatic temperature compensation
• Relay control switches
• High/low limits with hysteresis control
• Simultaneous display of main Parameter, temperature, and status on the same interface
• Password protection to prevent unauthorized operation
>>Technical Parameter
Controller Type | 98*98cm black and white version | 98*98cm colorful version | 144*144cm black and white version | 144*144cm colorful version |
Measurement Range (depends on electrode) | pH: -2.00 to 16.00 pH ORP: -2000 to +2000 mV Temperature: -10.0 to 150.0°C |
| Resolution | pH: 0.01 pH ORP: 1 mV Temperature: 0.1°C |
| Basic Error | pH: ±0.01 pH ORP: ±2 mV Temperature: ±0.3°C |
| Stability | pH: ≤0.02 pH/24h ORP: ≤2 mV/24h |
| Current Output | 0/4-20 mA (load resistance <750 Ω) 20-4 mA (load resistance <750 Ω) (1 channel standard, 2 channels optional) | 0/4-20 mA (load resistance <750 Ω) 20-4 mA (load resistance <750 Ω) |
| Communication Output | RS485 MODBUS RTU |
Dual Relay Control Contacts | 2Sets 3A 250V AC, 3A 30V DC | 3Sets 5A 250V AC, 3A 30V DC |
| Power Supply (optional) | 85-265 VAC ±10%, 50±1 Hz, ≤3W 9-36 VDC, ≤3W |
| Historical Data | NO | NO | Yes | Yes |
| Data Trend Chart | NO | NO | NO | Yes |
| Dimensions | 98 × 98 × 130 mm | 144 × 144 × 118 mm |
| Installation | Panel-mounted or wall-mounted, Panel cutout: 92.5 × 92.5 mm | Panel-mounted or wall-mounted, Panel cutout: 137 × 137 mm |
| Protection Rating | IP65 |
| Weight | 0.6 kg | 0.8 kg |
Operating Environment | Temperature: -10 to 60°C Humidity: ≤90% RH No strong magnetic interference except Earth’s natural field |
