Airflow Monitor-Guardian 500-230V (C08-0480-744)

Applicable Products: Fiberglass 30 Laboratory Hoods, Protector PVC Acid Digestion Laboratory Hoods, Protector PVC Perchloric Acid Laboratory Hoods, Protector Radioisotope Laboratory Hoods, Protector Perchloric Acid Laboratory Hoods, Protector XL Laboratory Hoods, Protector XLE Laboratory Hoods, Protector XStream Laboratory Hoods For installation in a factory-prepared cutout on the upper portion of the hood's right fixture panel. Guardian 500 Airflow Monitor senses and alerts the operator to low airflow conditions. Includes a face plate with circuit board, electrical power pack, vinyl tubing and airflow tube adapter. From the monitor's face plate, the user can easily select and calibrate a set point between 30 and 250 fpm using a velocity meter and a screwdriver. A green LED glows to indicate "safe" when airflow is greater than the low set point. A red LED flashes to indicate "low when airflow is below the low set point. An amber LED flashes when the sash is raised above the maximum safe working opening height. An audible alarm sounds (and can be muted) when under "low" and "sash high" condition. Includes night setback, external alarm and alarm mute functions.