Duct Mounted Airflow Switch

Duct pressure switches automatically start and stop auxiliary devices like electronic air cleaners duct heaters humidifiers exhaust fans and duct booster fans.

Duct mounted airflow switch.

The series avfs adjustable air flow switch is specifically designed to monitor air flow in ducts and provides a 3 a contact output to indicate a change or loss of flow. Single or multiple airflow elements are factory mounted and pre piped in a casing designed for flanged connection to the duct work. Detects duct air flow or absence by velocity of air movement. An air switch senses positive negative or differential air pressure and actuates an internal switch.

We can achieve 400 f ratings with a simple micro switch upgrade. Stainless steel paddle and range adjusting screw for field adjustment. Get it as soon as wed sep 30. Peeco flow switches for high temperature duct mounting are specially designed for use at elevated duct temperatures.

Tpi rh3a series rh adjustable air flow differential pressure switch control 0 05 12 wc compression connection. The flow switch should be mounted into a duct or chamber where the air paddle can freely point horizontally downwards. Flow switches for high temperature duct mounting high temperature duct mounted. For air temperatures to 1 500 f.

The principle of operation is quite simple. The switching point may be adjusted continuously within a wide range making the lps useful in a wide variety of applications. To avoid air swirl and paddle instability straight zones should be provided for a length of 5 times the diameter of duct upstream and downstream from the installation location. 4 2 out of 5 stars 251.

The series stra utilizes an airflow averaging element in a head type device generating a differential velocity pressure signal similar to the orifice venturi and other head producing primary elements. Free shipping by amazon. Kobold lps air flow switches are widely used to control air flow setpoints in hvac duct applications. The one piece stainless steel paddle can be trimmed if necessary.

Rely on grainger for a wide range of duct pressure switch options. 3 6 out of 5 stars 9. The avfs provides a 5 set point repeatability across a full scale range of 1 10 m s 197 1969 fpm and includes a mounting bracket for quick duct mounting. Air flow exerts a force on a paddle actuating a dust tight spdt micro switch.

Tjernlund ps1503 duct airstat pressure switch.