Campbell Scientific

CS547A-L Water Conductivity and Temperature Probe

ClimateMeteorological Station & Sensors

The CS547A probe monitors the electrical conductivity (EC) and temperature of water. EC is measured with three cylindrical stainless-steel electrodes mounted in an epoxy housing. The electrode configuration eliminates ground loop problems associated with sensors in electrical contact with earth ground. The electrodes are ac coupled, and a bipolar excitation is applied. This reduces electrochemical reactions, minimizes corrosion, and extends the probe’s life. Temperature is sensed with a thermistor.

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Overview

The CS547A probe monitors the electrical conductivity (EC) and temperature of water.
EC is measured with three cylindrical stainless-steel electrodes mounted in an epoxy housing.
The electrode configuration eliminates ground loop problems associated with sensors in electrical contact with earth ground.
The electrodes are ac coupled, and a bipolar excitation is applied.
This reduces electrochemical reactions, minimizes corrosion, and extends the probe’s life.
Temperature is sensed with a thermistor.
Compatible with most Campbell Scientific data loggers
Easy to clean
Corrosion resistant
Rounded ends facilitate installation and removal
Compatible with AM16/32-series multiplexers allowing measurement of multiple sensors
Weighted option available for stand-alone submersion

Specification

Conductivity Measurement Range	~0.005 to 7 mS/cm
Temperature Measurement Range	0° to 50°C
Conductivity Accuracy	The EC accuracy is in a KCl and Na₂SO₄, NaHCO₃, and NaCl Standard Solutions @ 25°C. ±5% of reading (for 0.44 to 7.0 mS cm^-1 range)
Temperature Polynomial Linearization Error	Typically < 0.1°C (over 0° to 48°C)
Thermistor Interchangeability	Typically < 0.2°C (over 0° to 50°C)
Operating Temperature Range	0° to 50°C