The Self-contained Zebra-Tech LI-COR LI-192 Hydro-Wiper is a field-proven, high performance wiping system designed for the LI-COR LI-192 submersible PAR sensors.
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|H-SC-001-030||Self-contained Hydro-Wiper for LI-COR LI-192 PAR sensor, 30m depth rating||
|Usually ships in 1-2 weeks|
How can I mount my wiper control housing?
The marine grade (316) stainless steel bracket attached to the wiper control housing can attach the housing to any required structure. Avoid attaching directly to a metal structure, as electrolysis can occur which may result in rapid deterioration of the metal parts.
How will I know when my Hydro-Wiper is low on battery?
When the battery reaches around 6.5 volts, the wipes will cease. The LED indicator will blink three times every 15 seconds when the Hydro-Wiper is in low battery shutdown mode.
How often should I set my Hydro-Wiper to wipe?
The optimal wipe interval will depend on the environmental conditions at the field site. Generally a wipe interval of 2 to 3 hours should prove sufficient. The wipe interval is controlled by the position of the wipe interval switch. The wipe interval switch can be set using the screwdriver provided in the field kit. Each position adds 15 minutes to the wipe interval, ranging from 15 to 720 minutes.
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The world is an unpredictable place full of fouling and entanglements that can send just about anyone astray. Water quality data too can be severely compromised by unforgiving conditions and unpredictable events. John Radford, Zebra-Tech’s founder, learned firsthand how fouling could degrade data quality to the point of being unusable. “Whilst working for the National Institute of Atmospheric Research in New Zealand, we had constant issues trying to make long-term measurements of suspended sediment concentrations in shallow coastal water,” he said. “Fouling of the sensors between site visits caused fatal degradation of the data quality. Attempts were made to develop a method for mathematically correcting the data, but these were unsuccessful.Read More
For decades, commercial fishing for yellow perch was allowed in southern Lake Michigan. This persisted until 1996 when it was outlawed, giving perch stocks there some time to recover. Scientists had for some time assumed that this fishing ban would not affect the reproduction cycles of the perch quickly and that they were going to need a long time to revert back to the cycles they relied on before commercial fishing ever started. But new research led by scientists at Purdue University finds that maturation schedules of yellow perch in southern Lake Michigan are much more resilient than had been previously thought possible.Read More