Double-sided exposure UV unit which is an essential tool for the production of double-sided PCBs. The ability to expose both sides of the Printed Circuit board at once eliminates the immense problem of artwork registration for two separate exposures on a single sided unit. These UV units are similar to the single sided range of UV units that instead of a solid metal base, the lid closes onto a clear Perspex base, beneath which is located, another set of UV tubes. Also, in place of the optical filter above each tube the AZ Ultra Violet Eposure units have a fibre optic connected to a display on the front of the units. This display panel gives a visual confirmation that each tube is working correctly during the period of exposure. Like the single sided units these models have a 0 -999 digital timer and the cases are manufactured from aluminium but also due to its larger size the case unit ( AZ326 ) is made of steel. Both UV units are supplied complete with an IEC socket and moulded 13-amp plug.
The UVA tubes used in these unit have an emission peak of 360-365nm.