This complete retrofit kit is designed to replace older MPI sensor setups in the Berson UV system. The kit contains all the components needed to upgrade to modern, operationally stable measurement of UV intensity, and is tailored to medium-pressure systems (MPI). Kit contents: 1 pc Intensity instrument UVT18 (part 06157 - with option for water meter connection); 1 pc UV sensor (part 10994 - for MPI or Berson B2020/B410); 1 pc Sensor cable (part 1560); 1 pc Sensor holder (part 10199 or 10210 - select as required); 1 pc Quartz clamp 28 mm (part 1045); 1 pc PTFE ring (part 1048); 2 pcs O-rings (parts 1012 and 1013); 1 pc PTFE ring (part 1086); 1 pc UVSD gasket (part 10202). The kit is designed to deliver accurate and reliable UV intensity measurement, ensuring the system meets requirements for documented UV dosing and operational safety. Key benefits: Compatible with Berson medium-pressure systems (MPI). Complete set - everything you need for replacement. Modern instrument (UVT18) with water meter support. Improved operational safety and measurement accuracy. Please contact us if you are unsure whether this kit fits your UV system.