UV Required Intensity or Contact Time

From a target dose, solve the operand you are missing - leave intensity blank for the required contact time (dose / intensity), or leave time blank for the required intensity (dose / time). A 40 mJ/cm^2 target at 10 mW/cm^2 needs 4 s of contact; at a fixed 8 s it needs a 5 mW/cm^2 lamp. USEPA UV Disinfection Guidance; the validated reactor dose and the state primacy agency govern compliance.

required_time_s = target_dose_mj_cm2 / intensity_mw_cm2; or required_intensity_mw_cm2 = target_dose_mj_cm2 / exposure_time_s (mW.s/cm^2 = mJ/cm^2).

USEPA UV Disinfection Guidance Manual (EPA 815-R-06-007) by name, the inverse of dose = intensity x time; no edition cycle.

The dose relation is public; the validated reactor dose and the state primacy agency govern compliance.

Estimate. Operator of record and primacy agency govern.

Field names used by the API: target_dose_mj_cm2, intensity_mw_cm2, required_time_s

• Inverse relation time = dose / intensity, or intensity = dose / time; mW.s/cm^2 equals mJ/cm^2USEPA UVDGM
• Target a common validated target is 40 mJ/cm^2, editable to the validated reactor doseUSEPA UVDGM
• One unknown enter exactly one of intensity or time; the tile solves for the otherscope of this tile