Does a second lamp double the speed?

For identical stations, yes: exposure accumulates, so two equal zones cure the same dose at twice the speed. The parts must pass under both.

Why is my measured dose lower than predicted?

Usually the cure zone. The useful zone is shorter than the housing, so using housing length overstates the achievable speed. A puck run at speed settles it.

Should I run at the speed this gives?

No. It is the speed where dose is exactly met, leaving no room for lamp decline. Run below it by whatever your radiometer interval justifies.

How is this different from the dwell-time page?

This page asks what speed the line could reach with more stations. The dwell page starts from the line you have and checks its exposure.

UV Curing calculator

UV Conveyor Belt Speed Calculator (Dose-Limited)

Find how fast a conveyor can run and still cure. Enter the required dose, one station's cure zone, measured irradiance and the number of stations.

What this calculator does

Find the fastest belt speed that still delivers the required UV dose, including extra lamp stations.

Formula used

Dwell needed = required dose ÷ measured irradiance
Total cure zone = zone per station × stations
Maximum belt speed = total cure zone ÷ dwell ÷ 12 × 60
Speed gained per station = one zone ÷ dwell ÷ 12 × 60
Line output = belt speed × 60

Inputs explained

Required Dose: Cure dose the material needs, in a named spectral band.
Lamp Cure-Zone Length: Useful illuminated length of one station along travel.
Measured Irradiance at Belt: Radiometer reading at belt height, in the same band.
Lamp Stations in the Tunnel: Stations a part passes under; exposure accumulates across them.

How to use the result

Best suited to setting belt speed for a new material, sizing how many stations a line rate needs, costing a second station against slow running.
Mixing lamp types needs the multi-lamp page instead. Does not model surface cure, which follows peak irradiance. Says nothing about overcure, heat or the lower speed limit.

Common questions

Does a second lamp double the speed? For identical stations, yes: exposure accumulates, so two equal zones cure the same dose at twice the speed. The parts must pass under both.
Why is my measured dose lower than predicted? Usually the cure zone. The useful zone is shorter than the housing, so using housing length overstates the achievable speed. A puck run at speed settles it.
Should I run at the speed this gives? No. It is the speed where dose is exactly met, leaving no room for lamp decline. Run below it by whatever your radiometer interval justifies.
How is this different from the dwell-time page? This page asks what speed the line could reach with more stations. The dwell page starts from the line you have and checks its exposure.

Last reviewed 2026-10-01.