Signet 3-272X-XX-XX Preamplifier

2721 Preamplifier

Pre-amplification is required to protect the output signal of pH and ORP electrodes from a wide variety of electromagnetic interferences common in industrial environments. Signet 2721 is used if remote pre-amplification is required (e.g. tank temperature >80oC) or connecting another manufacturer's electrode to the Signet 5700 or 8750 instrument. The Signet 2721 should be used with special order sensors built with cables (Signet models 277X-HT or 277X-1-HT).

Fields of Application:
  • Water and Wastewater Treatment
  • Neutralization Systems
  • Scrubber Control
  • Effluent Monitoring
  • Surface Finishing
  • Flocculent Coagulation
  • Heavy Metal Removal and Recovery
  • Toxics Destruction
  • Sanitization Systems
  • Design allows quick connect/disconnect of sensors
  • Pre-amplification for submersible and in-line installations
  • Unbreakable CPVC body
  • Designed for use with Signet pH and ORP Electrodes to assure signal integrity up to 120 m. (400 ft)
Efficiency >97% @ 25 C (77 F)
Operating Range pH0 to 14 pH
Operating Range ORP2000 mV
Operating Range 3-2726-LCLow Conductivity fluids; 20 - 100 ?S/cm recommended
Operating Range 3-2726-HFHydrofluoric acid resist glass, pH 6 or below; trace HF <2%
Compatibility2750 Electronics, 2760 Preamplifier
pH Temperature Sensor PT1000 versions are compatible with Signet 2750 pH/ORP Sensor electronics for connection to a PLC or to the Signet 8900 MultiParameter Controller. , 3 K? Balco versions are compatible with the Signet 2760 pH/ORP preamplifier for connection to the Signet
Process Connection in. NPT , ISO 7/1-R 3/4 , Mounts into Signet fittings
Wetted Materials pH: Ryton (PPS), glass, UHMW PE, FPM , ORP: Ryton (PPS), glass, UHMW PE, FPM, Platinum
Operating Temperature Range-10 C to 85 C (14 F to 185 F)
Operating Pressure Range -10 C to 65 C (14 F to 149 F): 0 to 100 psi / 65 C to 85 C (149 F to 185 F), linearity derated 100 psi to 58 psi / *Best performance for 2726-HF sensors is above 10 C (50 F)
Recommended Storage TemperatureThe best storage temperature for the 272X pH and ORP electrodes is 0 C to 50 C (32 F to 122 F) , The electrode glass will shatter if shipped or stored at temperature below 0 C (32 F) , The performance life of the electrode will shorten if stored
In-line Mounting Use the sensor threads , Use a Signet standard fitting up to 4 in. , Sensor can be mounted at any angle Submersible Mounting: , Use threads on models 2750 or 2760 , Requires inch NPT or ISO 7/1-R 3/4 male threaded liquid tight extension conduit.
Shipping Weight0.25 kg 0.55 lb
Standards and ApprovalsManufactured under ISO 9001 for Quality and ISO 14001 for Environmental Management
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