Conductivity sensors and conductivity recorder to measure water conductivity.



  • 0.5% conductivity reading accuracy
  • Dual 4-20 mA outputs, temperature and conductivity
  • Measurement span from 0 to 2 siemens/cm
  • Sensor armor available for harsh environments
  • Measure conductivity up to 82 feet depth
  • Fully encapsulated electronics

Conductivity Sensors Product Description

The Global Water WQ-COND Conductivity Sensors are suitable for measuring conductivity in a wide variety of applications including laboratories, streams, rivers, and groundwater. The conductivity sensor’s small size and rugged housing make it useful for hand held measurements or permanent installation.

The conductivity sensors use a 4-electrode measuring technique that provides accurate readings over a wide range of conductivities and temperatures. Because the conductivity of ionic solutions increases with increasing temperature, a temperature sensor is also incorporated and is used to provide automatic temperature compensation of 2%/°C normalized to 25°C. An in-line interface module converts the digital conductivity sensor and temperature data into two separate 4-20mA signals for monitoring with data loggers and PLC devices.

The standard conductivity sensors come with three feet (one meter) of cable between the conductivity sensor and interface module, and 25 feet of marine grade cable for connecting to recording devices. Additional cable can extend the length of the conductivity sensor up to 500 feet. Available conductivity ranges are 0-200µS/cm, 200-2000µS/cm, 2-20mS/cm, 20-200mS/cm and 200-2000mS/cm. The conductivity sensor’s temperature output has a measurement range of -5°C to +70°C.

Global Water’s GL500-7-2 Conductivity Sensor Recorder adds recording capabilities to the conductivity sensor.  The GL500-7-2 Conductivity Sensor Recorder connects to the conductivity sensor’s 4-20mA outputs to record data.  In addition, Global Water offers the PC320 Conductivity Controller to use the conductivity sensor’s output to control pumps or alarms.

Conductivity Sensors Specifications

Conductivity Range:
     0 to 200 µS/cm
     200 to 2000 µS/cm
     2 to 20 mS/cm
     20 to 200 mS/cm
     200 to 2000 mS/cm
Conductivity Resolution:
     0.1 µS/cm
     1 µS/cm
     0.01 mS/cm
     0.1 mS/cm
     1 mS/cm
Conductivity Accuracy: +0.5% of reading
Temperature Range: 23 to 158°F (-5 to 70°C)
Temperature Resolution: 0.02°F (0.01°C)
Temperature Accuracy: +0.4°F (0.2°C)
Temperature Compensation: automatic (2%/°C normalized to 25°C)
Temperature Response: 99% in <20 seconds
Output: Dual 4-20 mA (Conductivity and Temperature)
Maximum Pressure: 35 psi (82 ft (25m))
Immersion Depth: 1.4 inches (36 mm)
Operating Voltage: 10-36 VDC
Current Draw: 20 mA plus sum of both sensor outputs
Warm Up Time: 12 seconds minimum
Operating Temperature: 23 to +158°F (-5 to +70°C)
Storage Temperature: -4 to +212°F (-20 to +100°C)
Dimensions: 8 inch L x 0.86 inch Diameter (202 mm L x 22 cm Dia.)
Weight: 8 oz (227 g) plus cable

Conductivity Sensors Options

WQ-Cond Conductivity Sensor
Includes 25 ft of cable.  Specify conductivity sensor range when ordering:
WQ-Cond-1   0-200 µS (PN# DCA500)
WQ-Cond-2   200-2,000 µS (PN# DCB500)
WQ-Cond-3   2-20 mS (PN# DCC500)
WQ-Cond-4   20-200 mS (PN# DCD500)
WQ-Cond-5   200-2,000 mS (PN# DCE500)

WQEXC Extra Cable for conductivity sensors (PN# DH0000)
Standard conductivity sensors include 25 ft of cable, but can be purchased with up to 500 ft of cable.


Conductivity Sensor Plastic Armor (PN# DD0505)

Conductivity Sensor Stainless Steel Armor (PN# DD0510)



EC30A Conductivity Tester
Includes meter and conductivity cell, batteries, and instruction manual.

EC300ACC Field Conductivity Meter Kit
Includes field conductivity meter, cable with attached conductivity/temperature probe, and hard sided case.

EC500 Pocket pH/Conductivity Tester
Includes electrode, protective sensor cap, sample cup with cap, four 1.5V SR44W batteries, and a 48 inch (1.2m) neckstrap.

EC510 Pocket pH/Conductivity Tester Kit
Includes an EC500 portable conductivity meter with sensor, 84uS, 1413uS, 12880uS calibration standards, pH buffer pouches (1 each of 4, 7, 10pH plus rinse solution), weighted base, protective sensor cap, 3 sample cups, four 1.5V SR44W batteries, carrying case, and a 48 inch (1.2m) neckstrap

2CA102 Cond 3110 Set Handheld Conductivity Meter Set
Includes meter, tetraCon 325-3, case & accessories.

Lab 960 Benchtop Conductivity Meter

GL500 Conductivity Sensor Recorder
Conductivity recorder for sensor datalogging.  Includes Global Logger Software.  With weather proof enclosure and 12V battery.

PC320 Conductivity Sensor Controller

WQ Water Quality Sensors

WQMS Water Quality Monitoring System
The standard unit includes a datalogger, temperature sensor, pH sensor, conductivity sensor (with a 0-5000µS range unless otherwise specified), and DO sensor.