Xylem WQ Conductivity Sensor - Manual (Page 3)

Global Water
800-876-1172
• globalw.com
- 3 -
I. Overview
The Global Water WQ-COND Conductivity Sensor is suitable for measuring
conductivity in a wide variety of applications including laboratories, streams,
rivers, and groundwater. It’s small size and rugged housing make it useful for
hand held measurements or permanent installation.
The sensor uses 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%/ºC normalized to 25ºC. An in-line interface
module converts the digital conductivity and temperature data into two
separate 4-20mA signals for monitoring with data loggers and PLC devices.
The standard sensor comes with one meter of cable between the sensor and
interface module, and 25 feet of marine grade cable for connecting to
recording devices. Additional cable can extend the length up to 1000 feet.
Available conductivity ranges are 0-200uS/cm, 200-2000uS/cm, 2-20mS/cm,
20-200mS/cm and 200-2000mS/cm. The temperature output has a
measurement range of -5ºC to +70ºC.