Description
Hach GLI Pro is a high-accuracy industrial pH/ORP transmitter designed for demanding water, wastewater, and chemical applications. With advanced differential electrode technology, excellent noise immunity, automatic temperature compensation, isolated outputs, and robust diagnostics—GLI Pro ensures stable, drift-free pH/Redox measurement even in harsh, high-solids or high-chloride environments.
🔧 HACH GLI Pro — Key Technical Data & Selection Parameters
| Parameter | Specification / Details |
| Measurement Parameters | pH, ORP (Redox mV) |
| pH Range | 0.00 to 14.00 pH |
| ORP Range | –1500 mV to +1500 mV |
| Sensor Type | Differential pH/ORP technology (high-noise immunity) |
| Temperature Compensation | Automatic (Pt1000 / NTC options) |
| Outputs | 4–20 mA isolated, optional Modbus/Profibus (model-dependent) |
| Display | Backlit LCD, multi-parameter diagnostics |
| Calibration | 1-point, 2-point, 3-point buffer calibration |
| Housing | NEMA 4X / IP65 weatherproof industrial enclosure |
| Electrode Type | Differential, Gel-filled, High-chloride resistant |
| Mounting | Panel / wall / pipe mount |
| Power Supply | 24 V DC / 230 V AC options |
| Accuracy | ±0.01 pH / ±2 mV ORP |
| Alarm & Control | Two programmable relays for dosing/pump control |
| Process Compatibility | High TDS, high chlorine, industrial wastewater, cooling tower |
| Temperature Range | –10 °C to +110 °C (sensor-specific) |
| Ideal Integration | STP/ETP, RO plants, industrial utilities, cooling tower, chemical dosing |
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