Monitair LEV Chevron indicators are a great way of monitoring the performance of your LEV system. The digital monitors easily fix to existing duct work and give an operator a clear visual indication of whether a system is working effectively. The Chevron LEV monitor can be fitted either to the duct or to a suitable surface or structure using banding, self-tapping screws, nuts and bolts or any way you prefer. It only weighs 130g including batteries, so lightweight fittings can be used. Once in place, the Chevron is tamper-proof, and the case cannot be opened. You can easily extend the tubing using the supplied adaptor and put the Chevron up to 10 metres away, and it will work just as well! You only need one type of Chevron. You don’t need to know the static pressure inside the duct. As long as it’s sufficient to pull air at a high enough extraction speed, the Chevron will monitor the pressure and react accordingly. A simple calibration procedure is carried out, with the unit in situ, when you know the airflow is correct. There is no need to open the Chevron’s case to do this, so calibration is a breeze. The kit includes;

• Chevron Indicator
• Tapping plug & hose
• Fixings
• Calibration magnets