From RAE Systems, the MiniRAE 3000+ PGM-7320 is a Photo Ionization Detector (PID). Since its introduction in May 2007, the MiniRAE 2000 has become the industry standard in PID technology and ease of use. There are a lot of improvements and new features included in this release. By using RAE Systems PID monitors, you can ensure that dry cleaning equipment is performing as designed and that PERC vapors are contained within it. In addition to ensuring employee health, this will also keep insurance companies and Clean Air inspectors happy.