Cosar 75 densitometer

[Eddiegee]

Hi. I have a Cosar 75 compuplus transmission densitometer. I need a manual or help using it. All the threads here are all very old/dead, so I'm starting a new thread. Can anyone help? Thank you.

 

[ic-racer]

I have some densitometer pdf files but not that one. Looks like you will need it with its 'pocket calculator' interface.

 

[Eddiegee]

I have some densitometer pdf files but not that one. Looks like you will need it with its 'pocket calculator' interface.

Thank you, ic-racer. What is the pocket calculator interface? Do you mean the two-sided metal plate?

 

[ic-racer]

Thank you, ic-racer. What is the pocket calculator interface? Do you mean the two-sided metal plate?

I was refering to all the buttons that look like a hand-held calculator. My Tobais units are pretty self explanitory, but with those buttons, I think it would be hard to figure out. Have you been able to make a reading?

 

[Eddiegee]

I was refering to all the buttons that look like a hand-held calculator. My Tobais units are pretty self explanitory, but with those buttons, I think it would be hard to figure out. Have you been able to make a reading?

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I am not sure how to power the unit on correctly. There are 2 toggle switches at the back of the unit. Not sure if one is main power and the other for the lamp. I replaced 2 AA batteries. There is no LED activity in the display, no matter what position the switches are in, we'll, except for one time, but I have not been able to get them to turn on again. I thought the batteries would resolve that, but it didn't. The lamp does come on. The buttons have no effect on the display. I do have the metal plate, and some sketchy procedures for calibration and use. The unit was free, and could be non working, even though the lamp does light. This is why I was looking for a manual. It looks like the Cosar 73 might be the same? Don't know for sure. Do you have any Cosar manuals? Thank you.