The Fume Hood Zone Presence Sensor is installed above the hood’s workspace to sense if an operator is standing in front of the hood. Once an operator is in front of the fume hood, the Zone Presence Sensor immediately communicates with its corresponding HMS-1655 Fume Hood Controller to instantly switch from unoccupied mode to occupied mode.

The Zone Presence Sensor also senses when the fume hood is unattended and will revert to unoccupied mode after a user-specified number of minutes expire, which greatly reduces the fume hood’s overall energy consumption. This sensor works in conjunction with the HMS-1655 Fume Hood Controller, Sash Position Sensor, and Digital Sidewall Sensor.

Once an operator is in front of the fume hood, the ZPS’ microwave motion sensor communicates with its corresponding HMS Fume Hood Controller to instantly switch to occupied mode.

Highly sensitive and accurate, the ZPS is capable of detecting motion down to 1/4” per second. In addition, the ZPS can be tailored for any size fume hood. Sensitivity and time delay are also configurable on the ZPS and associated HMS fume hood controller.