What is the D25Lt Light Trap used for?

FAQ: “A D25LT customer recently chose a A02-1002-965 Light Trap with their order. For what reason or applications should one choose this part?”

D02-1013-408 Black Glass that typically comes with the D25LT as a bottom-of-scale standard.

D02-1013-408 Black Glass that typically comes with the D25LT as a bottom-of-scale standard.

The D25LT typically comes standard with a D02-1013-408 Black Glass (100 mm x 100 mm; 4 in x 4 in) affixed to a metal backing plate, to set bottom-of-scale during the standardization protocol.However, in some factories, particularly food plants, there is a customer concern about possible glass breakage even with the metal backing.

A02-1002-965 Light Trap is equivalent in function to the black glass and is used where glass is not allowed.

A02-1002-965 Light Trap is equivalent in function to the black glass and is used where glass is not allowed.

For customer situations where black glass cannot be used, HunterLab offers the A02-1002-965 Light Trap as equivalent in performance to the black glass for standardizing the instrument to 0% reflectance.

FAQ: “Why not just have the Light Trap as the only bottom-of-scale standard instead of both of them?”

The black glass is the traditional bottom-of-scale instrument standard for directional geometry instruments such as the D25LT. It is also less expensive to manufacture than the light trap. HunterLab offers this light trap to address a specific customer concern with the D25LT Port Up sensor and have done so with previous sensors such as the D25L and ColorQuest 45/0 LAV.

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