Xylem WQ pH SENSORS User Manual download pdf (Page 5)

Global Water

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f. The sensors may be pulsed on or turned on by the logging system

prior to taking a reading. Use a warm up time appropriate to the water

quality sensor you are using to assure that the sensor is fully on. The

sensors can run continuously for real time applications. Each sensor

draws between 4 and 19mA depending on whether the sensor is

reading at the minimum or maximum of its range.

Groundwater

g. Sensors may be suspended in 2” monitoring wells near the well

screen. Several sensors may be suspended in the same well by

staggering the sensors one foot apart.

Surface Water

h. Sensors may be submerged at the monitoring point and hung from

their cables. It is recommended to protect the sensors inside a 4” PVC

drainpipe that will act as a protective stilling well. Put a cap on the

bottom end of the pipe to allow easy water flow past the sensors.

Drop the sensor until it touches the bottom of the stilling well and then

pull it up slightly and secure the cable.

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Xylem WQ pH SENSORS User Manual Page 5