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hey professor..and anyone else who has used or may know,
i'm doing a bit of research on the infrared leak detectors and they sound pretty good but( now this may be the dumbest of dumb questions), how well do they work in a dark environment?? searching for a leak in an attic in the evap coil comes right to mind. from what i can gather they work off of the notion that refrigerant bends the light spectrum and sets off the sensor, or am i misinterpretting? could this be easily overcome by shining a flashlight on or near the probe during the search?