+GF+ 3-2751-2 - Chlorine-Sense/Pt1000-Temp-Calibrate - PVC 3/4"NPT Low Range Free Chlorine Water Monitoring Electrode
The 3‑2751‑2 is the in‑line (PBT+PP) variant of Signet's 2751 DryLoc® pH/ORP smart sensor electronics, processing analog electrode signals into isolated 4-20 mA (12-24 VDC) or digital S³L (5-6.5 VDC, 9600 bps) for direct PLC or 9900/9950/0486 tie‑in.
Key features include: NEMA 4X/IP65 rating, compatibility with all DryLoc pH/ORP electrodes (2724-2726, 2734-2736, 2744-2747, 2756-2757), pH range of -1…15 / ORP ±2000 mV, operating temperature of 0…85 °C, and cable length up to ≤ 305 m.
Enables probe‑health monitoring, broken‑glass/high‑impedance detection, memory‑chip calibration transfer, and optional EasyCal functionality—auto‑configures pH vs ORP, ATC via electrode Pt1000.
Typical applications include: wastewater neutralization, scrubber systems, effluent monitoring, surface finishing, pool/spa water treatment, and aquatic life‑support systems.
The DryLoc® quick‑connect system allows hot‑swapping electrodes without rewiring, maintaining 24/7 process loops audit‑ready.
| Parameter | Specification |
|---|---|
| Model / Part No. | 3‑2751‑2 (Mfg No. 159.001.805) |
| Product Type | In‑line pH/ORP Smart Sensor Electronics (Pre‑Amp) |
| Output Signals | Two‑wire 4‑20 mA or Digital (S³L) |
| Power Supply | 4‑20 mA: 12‑24 VDC (±10%); S³L: 5‑6.5 VDC (±5%) |
| Compatible Instruments | Signet 8900, 9900, 9950, 0486 Profibus Concentrator |
| Connector Type | Patented DryLoc® with gold‑plated contacts |
| Housing Material | PBT (polyester) with polypropylene retaining nut |
| Operating Temperature | 0°C to 85°C (32°F to 185°F) |
| Standard Cable Length | 4.6 m (15 ft), 3‑conductor shielded, 22 AWG |
| Key Features | EasyCal, probe health monitoring, glass impedance & broken glass detection |
Xiamen Zhicheng Automation Technology Co., Ltd. is a professional supplier of industrial automation products and solutions, dedicated to providing reliable, cost-effective, and high-performance products to customers worldwide.
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