Sandy King (sanking@hubcap.clemson.edu)
Sun, 17 Jan 1999 09:01:14 -0400
I can't help you with an instruction bookf for the Weston Photographic
Analyzer but I know the instrument and can explain some of its functions.
1. The S switch turns on a red colored display light. If your unit is
plugged in and the dial does not illuminate the light must be out.
2. The D switch turns on the light that is used to measure density. What
you do is turn on the light, then place a negative over the small reading
light and press the arm down on the negative, then read the density. Again,
when you slip the D switch on with the unit plugged a small light on the
far left from of the unit should illuminate.
3. Density is calibrated (with a step wedge of know value) by reading the
step wedge and adjusting the knob (to the left of the D switch) to the
correct value as know from the wedge.
4. A meter candle (also known as candle metre) is a unit of illumination
(also lux) of a surface one metre distance from a light source of one
candle power.
If you locate an instruction manual please let me know. I would very much
like to have a copy.
Sandy King
is
>Greetings!
>
> I have just bought an old Weston Photographic Analyzer, really
>an early densitometer, model 877. I'm used to working with
>modern densitometers, but this one confuses me. It's got two
>modes "D" for density with the usual log readings on the meter.
>Then there is an "S" switch. The machine is supposed to read
>meter-candles. There's only one dial. The meter-candle dial runs
>from very low, about 1.2 up to 650.
>
> What are these meter-candles? How are they used? What do
>they measure?
>
> I would love to get a user book on this unit, but the Weston
>Electrical Instrument Corp. is long gone. Any suggestions about
>where to begin looking will be most appreciated.
>
> Yours,
>
> Rich Lahrson
> tripspud@hooked.net
This archive was generated by hypermail 2.0b3 on Sat Nov 06 1999 - 10:06:42