Product category:
Potable water, test and treatment
News Release from: Hanovia | Subject: Transmittance monitor
Edited by the Processingtalk Editorial
Team on 03 March 2005
Hanovia transmittance monitor awarded US
patent
UV disinfection specialist Hanovia has been awarded a US patent for its transmittance monitor, used in process plants and drinking water installations across the world
UV disinfection specialist Hanovia has been awarded a US patent for its transmittance monitor, used in process plants and drinking water installations across the world The patent, numbered 6,791,092 B2 is titled "A Transmission Meter, A Method of Measuring Transmittance and a Disinfection Apparatus." The transmittance monitor measures UV transmittance, allowing UV disinfection systems to deliver an accurate dose and ensuring more consistent and cost-effective disinfection
This article was originally published on Processingtalk on 24 Feb 2003 at 8.00am (UK)
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Changes in feed water UV transmittance can affect UV dose and reduce the effectiveness of the disinfection process.
Transmittance may fluctuate due to a variety of environmental factors, including heavy rains and other seasonal changes that introduce sediment into the feed water.
To minimise the impact of these water quality changes, the transmittance monitor continuously measures water transmittance and feeds it back to the UV system control unit.
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Historically, variable UV transmittance has either been ignored or simply set as a constant.
The Hanovia monitor now allows accurate on-line measurements to be taken and the output processed in the UV dose algorithms used by the disinfection system.
The UV system control unit can then respond to changes in water quality by automatically increasing or decreasing the intensity of UV emitted by lamps in the disinfection chambers.
This results in all feed water being irradiated with the optimum UV dose, regardless of its UV transmittance.
The Hanovia monitor is unique in that it has no moving parts and does not rely on wipers to keep the optical path free from fouling.
In addition to increased performance, the monitor also reduces energy costs by allowing lamp power to be reduced when transmittance improves.
"Hanovia has a long history of innovation in developing successful technologies.
We have used the transmittance monitors in a number of municipal installations recently and can rely on the integrity of the readings," commented Mike Shaw of Hanovia.
"The award of this patent is public recognition of our innovation and the success of the product is a credit to our development teams." In conjunction with sister Halma Group Companies, Aquionics Inc (US) and Berson UV-techniek (Netherlands), Hanovia offers over 85 years' experience in the manufacture, application and development of UV technology for non-chemical disinfection and microbiological control.
The company's systems are used in a wide variety of applications including wastewater treatment, pharmaceutical manufacture, food and beverage production, meat processing, microelectronics and pool disinfection.
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