Heath-consultants Remote Methane Leak Detector Intrinsically Safe (R Manuel d'utilisateur télécharger pdf (Page 27)

Be aware of the ground elevation. Scanning across the top of a knoll or past the edge of a

structure can result in beam skips (a sudden change in distance) which may give you a

false detection.

Fig. 4-1: Sudden change in distance may cause a false detection.

Obstructions or variations in the landscape can cause dark zones where the laser doesn’t

scan. Look for the best angle to thoroughly scan these areas. Scanning up a hillside may

cause beam skipping or dark zones around the foundation of a structure.

Fig. 4-2: Ground elevation change or obstructions in the line of sight will cause “dark zones”

(shadows).

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Heath-consultants Remote Methane Leak Detector Intrinsically Safe (R Manuel d'utilisateur Page 27