Xylem WQ730 TURBIDITY SENSOR - Manual (Page 3)

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I. Use and Maintenance
a. The WQ730 Turbidity Sensor is a sensitive optical device and should
be handled and used carefully. Avoid hitting or dropping the sensor.
Avoid exposure to shock, vibration, extreme hot or cold temperatures,
or sudden wide temperature changes. Transport the sensor in a safe
and dry enclosure.
b. Normal maintenance requires the sensor to be checked on a regular
basis. Harsh environments can permanently damage the optics of the
sensor if it is left untended for long periods of time.
c. Deposits will develop on the optics over time and should be cleaned
every 2-3 days for best operation. The windows can be cleaned using
lint free cotton swabs and rubbing alcohol. Do not use any abrasive
cleaners on the lenses or permanent damage will occur. Cleaner
water requires cleaning less often, in other applications the sensor
may need to be cleaned once each day.
d. The calibration of the sensor should be checked every 6 months.
e. Always turn off the power when making circuit connections.
f. Air bubbles on the lenses can greatly affect the readings. When
installing, make sure that any bubbles are clear of the lenses or allow
them dissipate before taking readings.
g. Under no circumstances should the sensor be disassembled. There
are no internal adjustments or user serviceable parts inside. Opening
the housing will permanently damage the seals and can cause serious
damage to the optics. Opening the sensor will void any warrantee.
h. The stainless steel body of the WQ730 Sensor is connected to the
circuit ground. When taking measurements, the body of the sensor
must be in contact with the test solution or noise problems may occur.