Gigahertz-Optik Announces UV-LED Radiometer with Wand Probe
High-intensity UV and BLUE LED light sources are being employed in UV processes like UV and BLUE light curing.
Featuring a horizontally constructed photodetector assembly, which keeps the photodetector out of the hot zone, Gigahertz-Optik’s X1-1-RCH-116-4 UV and Blue Light LED Curing Radiometer is able to maintain stability in high-temperature and intense UV flood and spot curing environments.
The fully remote controllable 4-channel X1-1 meter features auto-ranging from 0.1 pA to 200 μA or manual range selection, CW, dose, run/stop, offset and peak hold functions, selectable integration time from 20 ms to 1 second, USB interface and a backlit LCD, and it is compatible with all other Gigahertz-Optik single and multisensor (up to four) light detector heads.
The RCH-116-4 wand-style detector consists of a RADIN (radiation integrator) coupled to a stainless steel rigid tube housing a quartz light guide that pipes the light signal to a detector capsule housing the photosensor/filter assembly. RADIN not only provides a cosine-corrected spatial response but along with the light guide and remote detector capsule provides signal attenuation and thermal isolation. The detector assembly is not subject to direct irradiation, which reduces ageing and saturation effects and allows the RCH detector to operate in temperatures up to 100°C (peaks up to 200°C).
The detector covers the spectral range from 350-465 nm with calibration points at key LED wavelengths of 365, 375, 385, 395, 405 and 436 nm auto-ranging from one to 40 W/cm2. The wavelength for measurement is selected using the X1-1 meter menu function. The low-profile RCH detector enables measurement just 8 mm above the exposure plane. Internationally traceable calibration certification describes the calibration procedure, responsivity and traceability. The X1-1-RCH-116-4 Radiometer includes the meter, detector, USB cable, calibration certificate and carrying case. Optional S-X1 software is available.
For full details, go to https://www.gigahertz-optik.de/en-us/product/X1-1-RCH-116-4.
Foundation Launches Information Portal
The Water Research Foundation has opened an Advanced Knowledge Portal on UV treatment at http://www.waterrf.org/knowledge/advanced-treatment/UV/Pages/default.aspx.
Boston Electronics, Nikkiso USA Sign Distribution Agreement
Boston Electronics Corporation (BEC), a leader in the distribution and advanced electro-optical products and solutions, announced a new partnership with Nikkiso USA. This partnership combines Boston Electronics’ presence in the ultraviolet (UV) market with Nikkiso’s advanced ultraviolet light emitting diode products (UV-LED). Under the new agreement BEC will distribute Nikkiso’s UV-LED products into the North American market.
“The partnership with Nikkiso is very exciting for Boston Electronics. We see growing demand for advantaged UV-LED products in the market, and we quickly recognized Nikkiso as a premier supplier of these products,” said Rick Mannello, CEO of Boston Electronics.
“Boston Electronics has the application and technical knowledge, strong North American market presence and a customer-focused culture that we were looking for,” commented Ruben Rivera, US vice president of sales and marketing at Nikkiso.
UV Technology Helping Treat, Disinfect and Clarify River
UV light is the final disinfection stage at the sewage treatment plants that feed wastewater back into the Isar River, where a City of Munich and State of Bavaria project makes the water safe to bathe in – even with strict European Union bathing water regulations.
UV radiation at a wavelength of 185 nanometers makes even higher energies available and allows oxidization processes, which can break down health-threatening chemicals in water.
The key to sustainability is UV lamp power, efficiency and durability. Specialist light source manufacturer Heraeus Noblelight has developed high-power, amalgam lamps that operate up to 16,000 hours with virtually constant UV output. A unique long-life coating doubles lamp life, and lamps can eliminate the transmission loss of quartz glass in conventional lamps, so constant disinfection is achieved over operating life. End users, such as waterworks and clarification plants, profit from the long operating life.
For more information, go to www.heraeus-noblelight.com.
Evoqua division launches controllers
Evoqua Water Technologies’ Aquatics & Disinfection Division announced the launch of Blu-Sentinel™ controllers, a line of advanced chemical controllers designed for commercial recreational water applications such as aquatic facilities and water parks.
The Blu-Sentinel™ Pro controller incorporates pool water treatment features, such as shock chlorination and economic mode operation, as well as the CEDOX control algorithm. The controller supports all chemical feed applications commonly found in pool water treatment, such as dosing pumps or relay control feeders, chlorine gas feed control and on-site electrochlorination system operation, as well as a control signal to UV systems, flocculation and/or activated carbon slurry feed systems.
Blu-Sentinel Pro can measure and control the critical disinfection parameters of free chlorine, pH and ORP. The instrument also can measure combined and total chlorine, as well as conductivity and provides a control output for these measurements. With the total chlorine sensor installed, the controller can enable UV disinfection systems to reduce combined chlorine. Water disinfection device developed – A device for disinfection of drinking water by radiation UV LEDs with flowrate 4 L/h was developed and tested by NPO ENT (St. Petersburg). Nine UV-LEDs with peak wavelength of 260 nm were placed on the axis of the device inside a quartz flask. Water is supplied through a lower pipe, passes through the helical channel, is irradiated by UV and exits through an upper pipe. The power supply is 6.5 V, 0.18 A. Dimensions of the device are 90 x 210 mm.
The water for microbiological testing of the device was contaminated by E. coli in concentration 1000 CFU/L. Water of volume 200 mL was passed through the device with different velocities. The E. coli were totally inactivated for flow rates from 2.4 to 3.6 L/h.
The device can used for disinfection of drinking water after of filtration in case there is no central water supply.