NCT & Window Tinting failure

hey cosmo, how do the sensors actually stick to the glass so they line up opposite eachother? I see a sucker on each wire but that hardly is used to attach the sensor to the glass?

Do you 'zero' the unit first before use by putting the sensors together without anything between them to get a reading of 100%?

Cosmo K wrote: »

@lex

There is a little magnet in each sensor, that holds them in place. And yes, the machine is calibrated (with a piece of ...um... how do I describe it.....calibrated glass?) before each test. Its all very simple, the whole procedure takes less then a minute.

cosmo, does this piece of glass have 2 different tints on it? For an optics calibration it really should have to compare one end of the spectrum to the other. Only doing a check at one end does not verify the full range and I would be dubious then of any results the unit produces

Teddy Daniels wrote: »

4 or 5 different reference glasses

where do you see this? I only noted a factory calibration at 4 different levels but not a field calibration of 4 or 5 plastics...

Teddy Daniels wrote: »

Sorry I mean 4 or five for calibration. Then one for field reference.
The fith being the "zero ring"

It would all depend on how often they go back for factory calibration but I still recommend with any optical device you need to have 2 references for the field calibration. Considering how often these devices are used daily & the environment they operate in.

If I had my windows tested and they were borderline in the failure zone, I would request the optics cleaned and retested with the plastic as a minimum before retesting the car

I wonder are the car windows cleaned off by the NCT operator on the section of glass to ensure the best possible results?