APX2-G3A/G3D Differential Signal pH Transmitter -2 to 16 pH Range, IP66 Enclosure for Water Quality Monitoring
The APX2-G3A/G3D Differential Signal Online pH Transmitter provides continuous, real-time monitoring of pH and ORP levels in water quality applications. This industrial-grade instrument features differential signal technology for stable measurements with strong anti-interference capabilities.
| Parameter | Specification |
|---|---|
| pH Range | -2 to 16 pH |
| ORP Range | ±2000 mV |
| Temperature Range | -10 to 150°C (14 to 302°F) |
| Resolution | 0.01 pH / 1 mV / 0.1°C |
| Accuracy | pH: ±0.02 pH / ORP: ±2 mV |
| Relay Control | 2 settable SPST relays, 3A/250VAC max load |
| Signal Output | Two 0/4-20mA current outputs (1000Ω max load) |
| Communication | RS485 Modbus RTU |
| Power Supply | AC: 100-240V or DC: 18-36V |
| Dimensions | 144×144×120mm (138×138mm panel cutout) |
| Protection Rating | IP66 enclosure |
| Operating Temperature | 0 to 60°C, RH |
- Differential signal pH/ORP measurement with strong anti-interference
- Multiple installation options: wall mounting, pipe clamp, panel
- 128×64 large LCD screen with multiple language support
- Records 14,000 historical data points and 100 maintenance records
- Automatic temperature compensation with NTC10K or PT1000 sensors
- Self-diagnostic function with image display for sensor status
- Temperature drift compensation for enhanced measurement accuracy
- Menu password protection for hierarchical management
Drinking water, surface water, groundwater, and general water quality analysis
Chemical processing, petroleum refining, paper manufacturing, food and pharmaceutical production, PCB manufacturing
Yes, the pH meter includes self-diagnosis functionality. During calibration and maintenance, it automatically diagnoses the pH/ORP sensor. If improper operation or poor sensor characteristics are detected, the screen displays an image notification advising users to re-maintain or replace the sensor.
The instrument not only compensates for sample temperature using connected sensors but also self-checks the instrument's working temperature in real-time. When temperature changes occur, the system compensates for hardware drift caused by temperature variations, ensuring more accurate test results through patented technology.
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