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The ATU1-D Turbidity
Meter is a direct reading portable instrument which comprises a Sensor
Unit with 30 m cable (standard length) and a compact rugged Display
Unit housed in an FRP case.The Turbidity Meter uses an infrared back-scattering
detection technique. Supensoids are detected in the area where the
pulsed beams from two transmitter elements intersect. The diffused
light at this junction is sensed by a receiving element located between
the two transmitters. The receiver beam has an acceptance angle of
165 °and , being located towards the rear of the unit, enables
turbidity measurements to be made over a wide range without alteration
of the optical axis span. Accurate turbidity data are digitally displayed
on an LCD panel with analogue output signals available for continuous
recording.
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