philips pdt 022/01 enlarging timer

[pmu]

Hi,

I have a Philips pdt 022/01 enlarging timer and I need some help to figure out how does it work. I know how that normal timer system works, but I believe this meter has built in lightmeter -- that I haven't figured out how it's supposed to work. I don't have a manual and on the web I did find only dutch (?) manual... --> http://home.hetnet.nl/~wim-heins/fotografie.htm

Any help would be highly appreciated!

-pete-

 

[eumenius]

Oh yes, I've got one, and it works fine - though I can see now that I was using it a bit in a wrong way You need to put both enlarger lamp and safelights in its sockets(all of them, that's very important to measure in absolute darkness). First I printed a test print, determined the right time to get the details in darkest shadows, set it on the timer with two rotating buttons, measure that area on the projected negative (don't forget to open the measuring cell), adjust the galvanometer to 0 with + --- - button on the lower left. Now when I measure the darkest area of the print where I want detail, and adjust the meter to 0 with time dials, I get the right exposure. But this device is capable of more - and I hope that someone from APUG who speaks Dutch would help us and translate the manual. The Dutch resembles both German and Yiddish that I understand well, but the technical texts are too difficult for my understanding, still

Zhenya

 

[argus]

Hi,

I also have the timer in question. Since my gumcoating is drying at the moment, I'll take the manual and make a quick translation.

The + --- - dial (7) is used for calibrating the device and not used for exposure. It influences the sensitivity of the metering probe.

1. The device is capable of computing exposure time AND paper gradation.

Turn on the enlarger lamp (white button)

put both dials (1 + 2) on 0.
open the metering probe (8) by pressing the handles towards each other.
Measure the lightest area containing detail (i.e. darkest on the print).
Turn the dials so the indicator (10) is centered.

Turn the large center dial in a way so the arrow (4) points to the number indicated in the window (3).

Now measure the darkes area containing detail on the easel and adjust the dials so the indicator (10) is in the middle again.
Turn the black center knob (5) so the black line points to the newly found value indicated in the window (3). The black line now shows the paper grade you should use.

Turn of the enlarger lamp (yellow button)

Exposure is done with the green button.
The exposure correction for harder paper grades is automatically computed. You can eliminate this function by putting the black center dial line on value 6.

paper grades are:
0. EZ = extra soft
1. Z = soft
2. S = special
3. N = normal
4. H = hard
5. EH = extra hard

I don't use grade paper but multigrade paper with the splitgrade technique and did not take the time yet to test the device with multigrade paper, so I only use the next function at this time:

2. use as a sole enlarger timer

put the black center dial line on value 6. Adjust the time dials to the timing wanted. The device needs a charging time of 5 seconds between each exposure.

 

[Pekka Puusaha]

Here you go.
https://www.pdf-archive.com/2017/03/17/philips-pdt-022/philips-pdt-022.pdf