Re: Integrator Problem

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jeffbuck@swcp.com
Date: 11/27/02-11:37:12 AM Z


Thanks, Ed. I'm not at home, so I'm not sure which of these photocells I
have, but I sure have plenty of exposed film. -JB

Ed Stander <glassact@compuserve.com> said:

> Jeff:
> Your problem probably lies with the photocell you are using. OLEC makes
> two round photocells: A PA710, and a PA710D. The PA710 is made for point
> light sources, and is very sensitive. the 710D is designed for 1000 watt
> quartz lamps, and is therefore less sensitive. The difference is a sheet
> of exposed film between the cover of the photocell and the cell itself.
> Cut yourself a round piece and throw it under the cell cover, and you
> should be all right.
> Also - I don't have a manual for your integrator here (though it is
> avaliable from olec). Many integrators have a small adjustable screw
> beneath the photocell plug on the back of the integrator. This is used to
> calibrate the integrator so that 1 unit of light equals one second of
> exposure time. Good luck - Ed Stander
>

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