+GF+ 3-2751-3 - pH-ORP-Sensing/Memosens-Digital-Transmit - PBT IP68 Short Cable Inline Intelligent pH ORP Transmitter Head
The 3‑2751‑3 is the panel-mount variant of Signet's 2751 pH/ORP electronics, converting electrode millivolt into isolated 4-20 mA (12-24 VDC) or digital S³L (5-6.5 VDC) for PLC or 9900/9950 tie-in. Features pH range of 1…15 / ORP ±2000 mV, NEMA 4X front rating, compatibility with all DryLoc pH/ORP electrodes, and supports sensor cables up to 305 m.
Enables broken-glass/high-impedance diagnostics, memory-chip calibration transfer, automatic pH/ORP detection, and automatic temperature compensation via Pt1000. Typical applications include wastewater neutralization, scrubber systems, plating processes, and pool/spa monitoring. The DryLoc® system allows hot-swapping of electrodes without rewiring, ensuring audit-ready operation 24/7.
| Parameter | Specification |
|---|---|
| Model / Part No. | 3‑2751‑3 (Mfr No. 159 001 806) |
| Product Type | Submersible pH/ORP Smart Sensor Electronics |
| Output Signals | Two-wire 4-20 mA (with EasyCal) or Digital (S³L) |
| Process Connection | 3/4″ NPT Thread |
| Cable Length | 4.6 m (15 ft) |
| Housing Material | CPVC |
| Enclosure Rating | NEMA 6P / IP68 (with electrode and watertight conduit) |
| Operating Temperature | -10 °C to 85°C (14°F to 185°F) |
| Auto-Configuration | Self-configures for pH or ORP operation via automatic electrode recognition |
| Key Features | DryLoc® connector, probe health monitoring, glass impedance & broken glass detection |
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