Envco – Environmental Equipment

The WQ301 conductivity sensor is a rugged reliable water conductivity measuring device.The sensor probe is mounted on 25 feet of marine grade cable, with lengths up to 500 feet available upon request.

The conductivity sensor output is 4-20 mA with a three wire configuration. The electronics are completely encapsulated in marine grade epoxy within a stainless steel housing.

The Conductivity sensor has two stainless steel electrodes. The outside electrode is a ring and the inside electrode is a wire. The Conductivity sensor measures the ability of a solution to conduct an electric current between the two electrodes. The sensor can be used to measure either solution conductivity or total ion concentration of aqueous samples.

The Conductivity sensor is automatically temperature compensated using an internal thermister. Therefore the sensor will give the same conductivity in a solution that is at 15C as it would if the same solution were warmed to 25C. This means that one calibration can be used for measurements in water samples of different temperatures. Without temperature compensated the conductivity readings would change as the temperature changed, even though the actual ion concentration did not change.

Output: 4-20 mA
Range: 0-5,000, 0-10,000, 0-20,000 Micro Siemens (micro mhos) per cm
Accuracy: 1% of full scale
Operating Voltage: 12VDC (+/- 5%)
Current Draw: 0.8 mA plus Sensor output
Warm Up Time: 3 seconds minimum
Operating Temperature: -40 to +55c
Size of Probe: 1" diameter x 12" long
Weight: 1 lb.
Temperature Compensation: 2% per degree
Electrodes: 316 Stainless Steel