Introduction, Cautionary statements – Campbell Scientific OBS500 Smart Turbidity Meter with ClearSensor Technology User Manual
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OBS500 Smart Turbidity Meter
with ClearSensor™ Technology
1. Introduction
The OBS500 submersible turbidity meter is designed for general pressure
measurements. The OBS500 uses ClearSensor™ (U.S. Patent No. 8,429,952),
an anti-fouling scheme that uses a shutter/wiper mechanism to protect and
clean the optics and a refillable biocide chamber to allow biocide to leach out
over the optics continually while in the closed position. It uses the SDI-12 or
RS-232 communication protocol to communicate with an SDI-12 or RS-232
recorder simplifying installation and programming. It can also be used as an
analog sensor with 0 to 5 V output.
Before using the OBS500, please study
•
Section 2, Cautionary Statements
•
Section 3, Initial Inspection
•
Section 4, Quickstart
2. Cautionary Statements
•
manual.
•
The OBS500 needs to be sent in after two years or 70,000 cycles for drive
shaft seal replacement. (See
m8! command in TABLE 7-7.)
•
The sensor may be damaged if it is encased in ice.
•
Damages caused by freezing conditions will not be covered by our
warranty.
•
Campbell Scientific recommends removing the sensor from the water for
the time period that the water is likely to freeze.
•
Sand grains between moving surfaces can jam the shutter/wiper. For high
sediment load and large grain size installations, operate the OBS500
normally open to minimize the chance of sand grains jamming the
shutter/wiper (see Section 7.7, Operation in High Sediment Loads and
Sandy Sediments).
•
Minimize temperature shock. For example, do not take sensor from sunny
dashboard and immediately drop it in frigid water.
•
Ensure that obstructions are not in the backscatter sensor’s large field of
view. See Section 4, Quickstart, for more information.
•
Maximum depth for the OBS500 is 100 meters.
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