ENVIRONMENTAL CONTROL AND
TUNNELS
SENTRY OPACIMETER
SENTRY OPACIMETER

SENTRY OPACIMETER


SENTRY is an electro-optical sensor whose function is to measure opacity in the air through the existing particles (suspended particles, gas emissions, etc.).

 
It uses the forward scatter principle, capturing a sample of light at an angle of 42º. The amplitude of this angle allows detection of particles of great size.

 
The advantages of SENTRY when compared to other opacimeters are:
 
Does not need to be calibrated on installation
 
External vibrations do not affect the calibration of the sensor
 
It uses a forward scatter principle, when compared to other opacimeters that use less effective technologies like back scatter


Gas Detection
Fire Detection
Public Adress
Tunnels & Utility Tunnels References

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