The Model 4700 Automatic Refrigerated Sampler from Teledyne Isco, Inc. is used for water quality monitoring at an industrial park operated by InfraServ Knapsack, Germany
InfraServ GmbH & Co. Knapsack KG is the company that operates the Chemical Industrial Park Knapsack. The site is situated in Huerth, south of Cologne in Germany. The park is divided into two separate sections and covers a large geographical area (160 hectares). The Chemical Industrial Park Knapsack is responsible for a wide range of services in energy, infrastructure, and waste disposal. It also operates the central treatment plant, treating wastewater from chemical, pharmaceutical, and paper industries. All treatment steps are located outdoors. Water quality parameters need to be monitored on a regular basis at key points in the treatment process, including the inlet and outlet of the plant, in order to optimize the process and follow local regulations.
All automatic samplers used for water quality monitoring and control would be placed outdoors. There was a need for a robust and weather resistant sampler that could keep the samples at 4 °C, even with big variations in temperature. The sampler would have to be versatile and easy to use and have the ability to collect samples at locations far from the water surface. The sampler pacing should be based on time or flow, according to what was available at each sampling location.
Teledyne Isco 4700 Sampler
Eigen Messtechnik, a Teledyne Isco dealer in Germany, recommended the Isco 4700 Refrigerated Sampler for such a tough environment. This robust and easy-to-use sampler is specifically designed for industrial and municipal wastewater applications.
The Isco 4700 sampler uses a tough, double-walled Polyethylene (LLDPE) cabinet that is both weather and corrosion resistant, as well as environmentally friendly. The refrigerator is driven by a powerful, high-performance and energy-efficient compressor. Compartment temperature (4 °C) can be logged and is actively regulated by the controller based on three different temperature sensors. The sampler has a large operational temperature span (-29 – 49 °C), which makes it perfect for the cold winters and hot summers found in Germany. The fast and simple programming makes it easy for all workers to operate the samplers. The high-performance peristaltic pump is able to deliver recommended line velocity (0.6 m/s) at head heights up to 8.3 meters, making the sampler suitable for all monitoring locations.