SOLD: Ophir Sensor

[lasersbee]

Re: FS: Ophir Sensor

I just received some information from Ophir about this sensor including how to calibrate them.
https://dl.dropbox.com/u/3175365/spc 20C-A-1-Y 1706111 , 770611A (RoHS) rev4.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...:thinking:

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


Jerry

You can contact us at any time on our Website: J.BAUER Electronics

 

[gillza]

Re: FS: Ophir Sensor

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.

 

[rhd]

Re: FS: Ophir Sensor

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.

 

[Kizdawg]

So what can I wire this up with?

The 9V batteries are killing my Laser pocket Seems more like a Picket these day's...

 

[rhd]

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!

 

[Kizdawg]

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.

 

[lasersbee]

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...:thinking:


Jerry


You can contact us at any time on our Website: J.BAUER Electronics

 

[Kizdawg]

Yes sorry posted this b4 reading the pm. was just going throught the emails. Thanks for all your help guy's

 

[lasersbee]

N/P....:beer:


Jerry

You can contact us at any time on our Website: J.BAUER Electronics