Signet 3-28XX-1XX Conductivity-Resistivity Electrodes

2839-2842 NPT Conductivity-Resistivity Electrodes

The Signet 2839-1V(D) to 2842-1V(D) Conductivity/Resistivity Electrodes are available in four cell constants from 0.01 to 10.0 cm-1, and are suitable for a wide variety of applications from high purity water quality monitoring to weak acids and bases. 316 SS electrode surface finishes are controlled in a precision bead blasting operation to ensure measurement accuracy and repeatability. The PVDF insulator and process connections are injection over-molded to minimize variance between electrodes. Double threaded connections in either ¾ in. NPT or ISO 7/1-R 3/4 enable quick and easy installation in submersible or in-line configurations. Transmitter integral mounting kit and junction boxes are available as accessories. A Certificate of Calibration is included with all 28391-V(D) to 2842-1V(D) Conductivity/Resistivity Electrodes. The electrodes are calibrated to meet ± 2% accuracy. Electrodes can be shipped back to the GF Signet factory for recertification.

Fields of Application:
  • Water Treatment and Water Quality Monitoring
  • Reverse Osmosis
  • Deionization
  • Cooling Tower and Boiler Protection
  • Distillation
  • Desalination
  • Demineralization
  • Semiconductor
  • Aquatic Animal Life Support Systems
  • RoHS compliant
  • China RoHS
  • ±2% accuracy - Custom calibration certificate provided
  • Dual-threaded
  • Compact electrode length for easy in-line installation in small pipe sizes
  • Triple orifice flow-through design reduces clogging and bubble entrapment
  • 316 SS electrodes with injection-molded PVDF process connections and insulators
  • Meets USP requirements
Instrument Compatibility2850, 8850-3, 8860, 9900
Cable4.6 m (15 ft) std., 3 conductor with shield, 22 AWG, max length 30 m (100 ft). For resistivity measurements above 10 M? or below 20 C, maximum cable length is 7.6 m (25 ft).
Process Connection -1V3/4 in. NPT
Process Connection 1VDISO 7/1-R 3/4
Threaded fittingPVDF
Insulator O-ring (2841, 2842)FPM
Electrode contacts316L stainless steel
Shipping Weight 28390.34 kg (0.74 lb)
Shipping Weight 2840, 2841, 28420.30 kg (0.66 lb)
Accuracy2% of cell value
Temp. measurementPT1000
Temp. response time (T): 28395 s
Temp. response time (T):284010 s
Temp. response time (T):284120 s
Temp. response time (T): 284230 s
Operating Pressure / Temperature With thread engagement per ANSI B1.20.1-10 C to 100 C @ 6.9 bar (14 F to 212 F @ 100 psi) / -10 C to 131 C @ 2.76 bar (14 F to 268 F @ 40 psi)
Storage Temperature-20 C to 131 C (-4 F to 268 F)
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Instruction ManualsClick Here to Download
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