left: Optical filter used on a Kemtrak DCP007 UV photometer right: Eroded optical filter from a traditional hot mercury vapor lamp photometer traditional photometer UV mercury vapour DCP007 UV Process PhotometerBenefits: • Ultra-low power UV analyzer • High performance UV LED light source • Drift free operation • Zero maintenance measurement cells • Light source & wavelength easy to change The Kemtrak DCP007 UV process analyzer uses ultra-low power cold light at the exact wavelength required for the analysis, exposing the sample to thousands of times less energy than a traditional UV photometer. This is achieved from a state of the art digital photometer design using a modulated high performance UV LED light source with precision fiber optics. Traditional UV photometers use mercury vapor lamps that continuously expose the process stream to high intensity broad spectrum UV radiation and heat generated by the lamp. This results in destruction of the valuable product and produces unknown and potentially hazardous breakdown products. Traditional UV photometers also suffer from drift and require constant recalibration due to optical filter destruction from erosion caused by the high intensity UV radiation and heat generated by the lamp. Mercury lamp instruments also experience systematic drift caused by the UV lamp output changing with age. The ultra-low power modulated UV LED light source on the Kemtrak DCP007 UV process analyzer does not destroy the optical filter or sample resulting in a drift free operation. Mercury vapor UV lamps have distinct wavelength peaks with a limited number of measurement wavelengths which are predominantly in the UV. A Kemtrak DCP007 UV LED process analyzer can be configured to mesure any discrete wavelength from 255nm to 1050nm. A proprietary dual wavelength four channel measurement technique and advanced digital electronics design allows deep absorbance measurement to 5 AU using a 1cm optical path-length. A range of shorter optical path-lengths allow for even deeper absorbance measurements. Convenient zero dead-volume hygienic measurement cells contain no electronics or moving parts and are well suited for hazardous environments. NIST-traceable validation filters are available to verify analyzer performance without process interruption. It is simple to change the light source on a Kemtrak DCP007 photometer and the unit can easily be reconfigured to analyze at different wavelengths. Standard features include multiple product switching, remote zeroing and signal damping. A graphical internet based interface allows remote operation, calibration, validation and data trending using a standard web browser eliminating the need to install software. All Kemtrak products are made from the highest quality materials and are designed to the most demanding specifications to ensure — long life and the highest reliability.

Housing Stainless steel EN 1.4301 (X5CrNi18-10), AISI 304 (V2A) Captive lid screws & external mounting brackets stainless steel 224 x 215 x 105 mm (L x W x D) IP 65 / EN 60529 Display 16 x 4 alphanumeric white on blue dot matrix LCD display LED background illuminated Measurement updates every second LED 1 (green): Power on LED 5 (blue): Clean / Hold Operation 4 push buttons Remote HTML/Java interface (TCP/IP connection via Ethernet port) Software Features: • Auto gain: • Auto zero: • Calibration: • Damping: • Memory: • Security: Fully automatic photometer gain switching Automatically, locally...