Signet 3-2840-1VD Conductivity-Resistivity Electrode & Sensors

Signet 3-28XX-1XX Paddlewheel Conductivity-Resistivity Electrode & Sensors

3-28XX-1XX Conductivity-Resistivity Electrodes

Model#: 3-2840-1VD | Series#: 3-28XX-1XX

Price: $37600

Availability: Ships within 2 to 3 weeks
$37600 /ea
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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
3-2840-1VD Product Specific Data
Threaded fittingPVDF NPT
ISO threaded fittingPVDF ISO threaded fitting
Series Data
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 MΩ 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)
Accuracy±2% 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 ºC to 100 ºC @ 6.9 bar (14 ºF to 212 ºF @ 100 psi) / -10 ºC to 131 ºC @ 2.76 bar (14 ºF to 268 ºF @ 40 psi)
Storage Temperature-20 ºC to 131 ºC (-4 ºF to 268 ºF)
Product Dimensions
Weight0.74 lb
Width0.00 mm, 0.00 in
Height0.00 mm, 0.00 in
Length0.00 mm, 0.00 in
Document TitleDownload
DatasheetsClick Here to Download
Instruction ManualsClick Here to Download
IDShort DetailsPrice 
3-8050-1Universal mount junction box$116.00
3-8052Integral mount kit, for cond/resis sensors, 3/4in NPT thread$83.00
3-9000.392-1Liquid tight connector, (1) NPT connector$27.00
3-9000.392-2Liquid tight connector, (1) PG13.5 connector$27.00
3-9900.396Angle adjustment adapter kit, for field mount 9900$30.00
5523-03223-conductor cable with shield, 22AWG, per foot$3.00




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