Air quality monitor TunnelTech 900

The TunnelTech 900 is an all-in-one Visibility and air quality monitor based on backscatter light measurement technology for visibilty and electrochemical cell technology for gas measurements. A low cost precision road & rail tunnel monitor using proven technology to provide accurate and rapid results. The TunnelTech 900 is an all-in-one Visibility and air quality monitor based on backscatter light measurement technology for visibilty and electrochemical cell technology for gas measurements. It offers reliable visibility measurement and optional electrochemical cells to deliver superb and reliable gas measurement at a very competitive price. Features & Benefits Measure Visbility, CO, NO, NO2, SO2 in one compact sensor. No fog interference with optional heater. Visibility, smoke detection compact analyser. Advanced electrochemical cell technology. Easy installation with minimal wiring required. Minimal maintenance requirements. Easy to calibrate.