The Signet 2750 pH/ORP Sensor Electronics featuring the DryLoc® connector, provides a variety of functions to suit various requirements. The 2750 has a preamplified signal and features two different outputs: a two wire 4 to 20 mA loop output with EasyCal function or a digital (S3 L) output which allows for longer cable lengths and is compatible with the Signet 8900 Multi-Parameter Controller. The 2750 self-configures for pH or ORP operation via automatic recognition of the electrode type. The optional EasyCal feature allows simple push-button calibration and includes an LED indicator for visual feedback. The DryLoc® electrode connector quickly forms a robust assembly for submersible and in-line installations. NEMA 4X junction enclosures are integral parts of the 2750 in-line version and are also available as accessories for the submersible 2750. The 2750 submersible preamplifier can also be used as an In-line preamplifier when used with the 3/4” or 1” threaded sensors including the 2724, 2774 and 2764 series electrodes. The 2750 In-line preamplifier can be used with Signet fittings up to DN100 (4 in.) and wet-tap assemblies.
- Water/Wastewater Treatment
- Neutralization Systems
- Scrubber Control
- Effluent Monitoring
- Surface Finishing
- Flocculent Coagulation
- Heavy Metal Removal and Recovery
- Toxics Destruction
- Sanitization Systems
- Pool & Spa Control
- Aquatic Animal Life Support Systems
- CE
- Manufactured under ISO 9001 for Quality and ISO 14001 for Environmental Management
Compatible Electrodes: | Signet DryLoc® pH and ORP Electrodes Models 2724-2726, 2756-2757 Wet-Tap, 2764-2767, 2774-2777 |
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Operating Range pH | 0 to 14 pH |
Operating Range ORP | ± 2,000 mV |
Response Time pH | < 6 sec. for 95% of change |
Response Time ORP | application dependent |
Materials In-line | Valox® (PBT) |
Materials submersible | CPVC |
Cable | 4.6 m/15 ft, 3-conductor shielded 22 AWG, 100 ft max. |
Power | 12 to 24 VDC ±10%, regulated for 4 to 20 mA output / 5 to 6.5 VDC ±5% regulated recommended, 3 mA max., for digital (S3 L) output |
Current output pH | Fixed 4 to 20 mA, isolated, = 0 to 14 pH (custom scaling available) |
Current output ORP | Fixed 4 to 20 mA, isolated, = -1000 to 2000 mV (custom scaling available from ± 2000 mV) |
Max Loop Resistance | 100 Ω max. @ 12 V 325 Ω max. @ 18 V 600 Ω max. @ 24 V |
Accuracy | ± 32 µA |
Resolution | ± 5 µA |
Update Rate | 0.5 seconds |
Error indication | 3.6 mA, Open input diagnostic |
Digital (S3 L) output | Serial ASCII, TTL level 9600 bps |
Accuracy pH | ± 0.03 pH @ 25 °C (77 °F) |
Accuracy ORP | ± 2 mV @ 25 ° C (77 °F) |
Resolution ORP | 1 mV |
Available Data | Raw mV, pH or ORP, temperature (pH) |
Input Impedance, Z | >1011Ω |
Enclosure | 3-2750-1 & -2: NEMA 4X/IP65 with electrode connected , 3-2750-3 & -4: NEMA 6P/IP68 with electrode and watertight conduit and/ or extension pipe connected |
Temperature (submersible) | 0 ° C to 85 ° C (32 °F to 185 °F) |
Temperature (in-line) | 0 ° C to 110 ° C (32 °F to 230 °F) |
Storage Temperature | -20 °C to 85 ° C (-4 °F to 185 °F) |
Relative Humidity | 0 to 95%, non-condensing (without electrode connected) |
Document Title | Download |
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Product Brochure | Click Here to Download |
Manuals | Click Here to Download |
Technical Data | Click Here to Download |