Dust Monitor

Smoke Detector
Dust monitor: The FireGuard detects emerging fires already at their early stages (cold smoke). The sensor uses the available natural air stream in the tunnel.

Any influence caused by fog will be eliminated by optional heating elements. The sensor is very compact and has neither movable parts nor wear parts nor does it need consumables.

Product link: https://www.photometer.com/en/Tunnel-Sensors/FireGuard-2/

Visibility Monitor
The VisGuard measures the scattered light intensity of a sample drawn into the instrument. Filtered purge air is fed through the flow cell, thus enveloping the sample in a protective shroud of clean air. This effectively keeps the optics clean.

Installations are either in the tunnel cavity/niches (in-situ) respectively using extractive sampling away from the cavity. An optional sample heater eliminates the influence of any mist effects.

Product link: https://www.photometer.com/en/Tunnel-Sensors/VisGuard-2-Extractive/

Oil Mist Detector
The VisGuard measures the scattered light intensity of a sample drawn into the instrument. Filtered purge air is fed through the flow cell, thus enveloping the sample in a protective shroud of clean air. This effectively keeps the optics clean. Oil dust in the sample can be detected early to help preventing from further incidents.

Product link: https://www.photometer.com/en/Tunnel-Sensors/VisGuard-OMD/