Guide to UV Measurement
Why Measure?
Because there are virtually no direct, on-line methods of determining cure, and the fact that there is a substantial variation in types of UV lamps, the UV exposure conditions must be measured and correlated with the cure result.
UV measurements fall into two categories:
- Laboratory measurements used to optimize the UV exposure and allow the duplication of the appropriate UV exposure required for “cure,” and
- Production monitoring for the purpose of verifying that the exposure is maintained within predetermined limits.
The reasons for –and the objectives of – these two measurement activities are different. These are discussed in this section.