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Old 07-17-2012, 11:07 AM #33
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Default Re: FS: Ophir Sensor

Quote:
Originally Posted by Kenom View Post
I just received some information from Ophir about this sensor including how to calibrate them.
https://dl.dropbox.com/u/3175365/spc...%29%20rev4.doc

I've also gotten the price on a new board inside the sensor if anyone's sensor ever goes bad, I can get a new one. I'd have to say it's not that expensive either. $150
That Link does not show how to calibrate the OPHIR Heads...

And $150.00 for a PCB that will still need to be calibrated to the Radial
Thermopile disk with 3 different trimpots is quite expensive when
you compare it to the complete heads + PCB on eBay ~$50.00 - ~$200.00...IMO


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Old 07-19-2012, 04:00 AM #34
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Default Re: FS: Ophir Sensor

Quote:
Originally Posted by Kenom View Post
Yes you do need a higher voltage into the sensor to read higher.. as well as having a heatsink. I bought one for this purpose but never got around to using it. Peak voltage the sensor can handle is 18V



No you need to power it with a dual output PSU. A computer PSU can do the trick if you have the means of modifying it a little. Once you have the psu, yes you can just hook it to a voltmeter.
I'd like to make sure that I understood it correctly, a regular computer PSU could be connected to the head and DMM in a similar fashion as here? Just instead of the 9V batteries I'd be wiring two of those 4contact peripheral connectors (fans, CD-ROM, HDD etc). This will also allow for higher readings since the PSU is 12V. Are there any additional modifications that need to be done?

P.S. I apologize if my question is silly, my electrical engineering background is severely lacking.
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Old 07-19-2012, 04:22 AM #35
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Default Re: FS: Ophir Sensor

Quote:
Originally Posted by gillza View Post
I'd like to make sure that I understood it correctly, a regular computer PSU could be connected to the head and DMM in a similar fashion as here? Just instead of the 9V batteries I'd be wiring two of those 4contact peripheral connectors (fans, CD-ROM, HDD etc). This will also allow for higher readings since the PSU is 12V. Are there any additional modifications that need to be done?

If someone has told you that, then... I *guess* it could be true.

But I'm instinctively doubtful. The first thing that strikes me is that you'd be wiring the +12 (or +5) of one connector, to the GND of another, in your attempt to create the Common GND. Well, what's the authority to suggest that this won't just short the PSU?

If you choose 2 peripheral connectors on the same cable, then it absolutely will short the PSU. If you choose from two different cables, and they're somehow on separate circuits inside the PSU, that somehow don't mind being wired together to create a common ground, then *maybe* you'd get lucky and this would work. But I'd still put my money on it shorting out.

So I don't know... I'm totally speculating, but my gut says "no dice".

If you wanted to achieve the same thing, why not just splice open the AT/ATX connector? Even old AT power connectors had split rail (+ and -) 12V outputs. One of them, I can't remember if it is AT or ATX, also has a +/- in 5V.
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Old 07-19-2012, 04:51 AM #36
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Default Re: SOLD: Ophir Sensor

So what can I wire this up with?

The 9V batteries are killing my Laser pocket Seems more like a Picket these day's...
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Old 07-19-2012, 05:09 AM #37
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Default Re: SOLD: Ophir Sensor

Quote:
Originally Posted by Kizdawg View Post
So what can I wire this up with?

The 9V batteries are killing my Laser pocket Seems more like a Picket these day's...
- You can try your hand at Jib's circuit design. That one works great. The only reason it took me like 15 iterations to get it working, was that I kept grafting extra stuff onto it.

- A lot of people just buy split rail ICs from Digikey.ca.

- Or you can use rechargeable 9V batteries.

Lots of options!
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Old 07-19-2012, 01:25 PM #38
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Default Re: SOLD: Ophir Sensor

Sorry I was kinda vague there. I found 12V 200mA ac/dc transformers. Just not sure if 200mA is enough juice to run them. I know others are using 12V 1A units which I cant seem to find arround here. Funny when I am not looking for these things I allway's see them and now that I am looking I cant find em. I wanted to get away from the batteries.
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Old 07-19-2012, 01:27 PM #39
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Default Re: SOLD: Ophir Sensor

Quote:
Originally Posted by Kizdawg View Post
Sorry I was kinda vague there. I found 12V 200mA ac/dc transformers. Just not sure if 200mA is enough juice to run them. I know others are using 12V 1A units which I cant seem to find arround here. Funny when I am not looking for these things I allway's see them and now that I am looking I cant find em. I wanted to get away from the batteries.
I thought I answered your PM questions on those Power
Supplies this morning...


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Old 07-19-2012, 02:01 PM #40
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Default Re: SOLD: Ophir Sensor

Yes sorry posted this b4 reading the pm. was just going throught the emails. Thanks for all your help guy's
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445nm A140 1.35A 1.7W guidesman with G2
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445nm 9mm Blitzbuck V3 2.8A Saik 2.9W
445 800mw 9mm in a RHD MOD9 a pollished stainless auraura sh-032 667ma benboost
450nm Osram PL450 301mw in a powerlight B50 Host 400ma microboost
450nm Osram PLTB450 1.7W in a Bigboy Host 1650ma FMT driver
532nm 80mw DPSS DIY info to follow
532nm 50mw DPSS module LASERSMAN Freeby review to follow...
638nm mits300 671ma 500mw C6 cree
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Old 07-19-2012, 02:12 PM #41
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Default Re: SOLD: Ophir Sensor

N/P....


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