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Old 05-05-2012, 12:28 AM #33
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Default Re: DIY Laser Power Meter Projects...

Quote:
Troll fail....
Call it what you want, I'm just calling it like I see it.

Quote:
No... I'm referring to all findings on the Forum including our own
in shop tests of these OPHIR 20C Heads...

I'm definitely not discrediting a well known companies products..
What I am saying is that we have seen on the Forum and in our
shop, OPHIR surplus sensors off eBay that were up to ~10% off
calibration.
I'm just saying... don't believe that the OPHIR sensor that you
may get is 100% accurate without verifying it.

You are very aware of this since you even tested that head for
that other member that found discrepancies between his LaserBee
2.5W USB and his OPHIR head...
It was later found that the problem was the OPHIR head reading
~9%-10% too high and was reported on the Forum..
That is one Ophir head that was confirmed to be off.

If you have collected a statistically significant amount of data, by all means post it, and have it be independently verified.

Anything you (as a single person) come forward with cannot be counted as credible - that would be unscientific.

Quote:
Since you referred to the heads that you had reported on and recently
sold.... I know that you corrected your 1st post data to show that your
initial readings were OFF due to your brand new Coherent Cube Laser
being off by ~9%....
It was system donated to me with about 100 hours on it; basically new, but I suppose they had to be willing to donate it for some reason.

Quote:
I hope that data sums it up for you....
These are only a couple data points, and do not prove anything. You know better, Jerry.

There is no proven systematic inaccuracy of Ophir heads. You are making the claim, it is up to you to prove it. What we do here is science, not smoke and mirrors.

Trevor


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Old 05-10-2012, 07:47 PM #34
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Default Re: DIY Laser Power Meter Projects...

Don't forget about knimrod's computer interfacing addon for his LPM... that was a big part of the project!

Great thread btw,

Regards,

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Old 05-11-2012, 12:24 AM #35
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Default Re: DIY Laser Power Meter Projects...

Quote:
Originally Posted by amkdeath View Post
Don't forget about knimrod's computer interfacing addon for his LPM... that was a big part of the project!

Great thread btw,

Regards,

amk
I just added that 2nd part of Nimrods Interface for his
DIY LPM project to the 1st post...
Thanks for reminding me...


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Old 06-13-2012, 02:26 PM #36
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Default Re: DIY Laser Power Meter Projects...

So I got my Ophir sensor yesterday but it did not come with a molex conector cable. So I am unsure what is the corect pinout for it. It is a 150C-A-.1-C/ERB I have made a molex conector and leads but I dont want to hook this up backwards.



Here is a pic Could someone help me figure out the pinout on this? I have 2 different diagrams of how to wire this up and it's getting confusing.

Thanks in advance

Kent
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Old 06-13-2012, 03:47 PM #37
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Default Re: DIY Laser Power Meter Projects...

Quote:
Originally Posted by Kizdawg View Post
So I got my Ophir sensor yesterday but it did not come with a molex conector cable. So I am unsure what is the corect pinout for it. It is a 150C-A-.1-C/ERB I have made a molex conector and leads but I dont want to hook this up backwards.



Here is a pic Could someone help me figure out the pinout on this? I have 2 different diagrams of how to wire this up and it's getting confusing.

Thanks in advance

Kent
Hey Kent,

I went with this wiring diagram.


Ophir LPM Schematic by tsteele93, on Flickr

I'm sure you know this, but I will add that dots or circles mean that two wires CONNECT and a round JUMP or Semi-Circle means they do NOT connect, that is just where they had to cross in the drawing but they do not connect electrically.

If you look here, you can see my head with the wiring and actually I think both of the wiring diagrams you are seeing should end up being the same.


Untitled by tsteele93, on Flickr

If you are looking at this one...

http://laserpointerforums.com/attach...ophirtodmm.pdf

It is correct by COLOR but not in the correct order. Mine is in the correct positions. Does that make sense? I'll add your colors as well...

So the far left pin is orange/+out; BLUE BLUE
The next pin is red/+in ; GREEN GREEN
The next pin is brown/-out AND middle rail voltage (ground) YELLOW YELLOW
The far right pin is black/ -in from low power side BLACK BLACK
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Old 06-13-2012, 04:00 PM #38
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Default Re: DIY Laser Power Meter Projects...

I have seen that but it conflicts with this one.
So that's what has me confused..



This one suggests it is dmm, ground, V-, V+
your diagram suggests dmm, v+, ground, v-
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Old 06-13-2012, 04:33 PM #39
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Default Re: DIY Laser Power Meter Projects...

Quote:
Originally Posted by Kizdawg View Post
I have seen that but it conflicts with this one.
So that's what has me confused..



This one suggests it is dmm, ground, V-, V+
your diagram suggests dmm, v+, ground, v-
That one has the colors correct, but the wires are in no particular order. So it is correct, but only by color. Not position.
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Old 06-13-2012, 04:34 PM #40
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Default Re: DIY Laser Power Meter Projects...

Oh I see that's great. Thanks again Tom.
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Old 06-13-2012, 04:36 PM #41
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Default Re: DIY Laser Power Meter Projects...



I had the same problem when I was doing mine, but it was easier for me to figure out because I had the correct molex pin so my colors matched that diagram even though the positions did not - so I was able to put it together that the picture was just showing the wire colors in no particular order.
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Old 06-13-2012, 04:38 PM #42
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Default Re: DIY Laser Power Meter Projects...

Are the Ophir 150C suitable for visible lasers? They are made for high IR lasers right?
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Old 06-13-2012, 04:42 PM #43
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Default Re: DIY Laser Power Meter Projects...

I wondered about that as well but everyone and everything I read said they would work for any visible light lasers as well.

I tested mine up against my LaserBee with blue and red and came up almost EXACTLY the same!

Ophir head DIY LPM test - red and blue
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Old 06-13-2012, 05:02 PM #44
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Default Re: DIY Laser Power Meter Projects...

I read they would be fine for them too. I will let ya know what I find out. mine is calibrated for C02 but they can be calibrated for visible as well

http://www.orcontech.com/data/Ophir_OEM_catalog.pdf

page 119 is this sensor.
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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
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532nm 50mw DPSS module LASERSMAN Freeby review to follow...
638nm mits300 671ma 500mw C6 cree
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Old 06-13-2012, 07:49 PM #45
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Default Re: DIY Laser Power Meter Projects...

Well I went out to wallmart to grab some converters but they didnt have any so I went with the 9V battery option. I just tested my phr-805T I built the other day and I got 42ma on the Laserbee 2.5WUSB and 41ma on the Ophir and a 9mm 445 was a 746ma on the laserbee and 744 on the ophir. then a mits110 638nm and I got 70ma on the laserbee and 74ma on the ophir. So it is out a bit seems to be more so on the red. These were just quick tests. Since the ophir has such a quick response time I just fired up the laserbee till it peaked then quickly moved the laser onto the ophir Not the greatest procedure but it gives me an idea of how close they are.

On another note I was expecting to have to change out my 20$ ebay multimeter (A830L from onlybatteries.com) but it seemed to read this no problem. So you may be fine without the expensive fluke etc...
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405nm PHR-805T UniqueFire A10-B 100ma mogasm linear
405nm 600mw S06J C6 cree
445nm A140 1.35A 1.7W guidesman with G2
445nm 2.5W+ G-2 H1600 in a copper axis 1800ma Mogasm linear 2x AR16340's in a guidesman
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
638nm mits500 WF-501B 1150mw
638nm mits500 C2 1450ma X-drive 1100mw
685nm 29ma mogasm linear 17mw C6 Cree Aurora

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Old 06-14-2012, 12:34 AM #46
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Default Re: DIY Laser Power Meter Projects...

That is great! Those are excellent results! Good job Kent.

That was my method too BTW.
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Old 06-14-2012, 02:35 AM #47
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Default Re: DIY Laser Power Meter Projects...

Yep it turned out great.. Now to get it hooked up to a arduino for data logging and a display. And stick it in a nice box... Had to play arround with it a bit so I decided to throw the 2.5W and a 1.7W at it. the batteries in the 1.7 havent been charged in a while but still got just over 4W on the sensor..





Hopefully that board RHD was working on comes out of the woodwork... Busy Busy!

Also thanks Tom for pointing me in the rite direction for that sensor. I love that I dont have to multiply by 3...
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405nm PHR-805T UniqueFire A10-B 100ma mogasm linear
405nm 600mw S06J C6 cree
445nm A140 1.35A 1.7W guidesman with G2
445nm 2.5W+ G-2 H1600 in a copper axis 1800ma Mogasm linear 2x AR16340's in a guidesman
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
638nm mits500 WF-501B 1150mw
638nm mits500 C2 1450ma X-drive 1100mw
685nm 29ma mogasm linear 17mw C6 Cree Aurora
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Old 06-14-2012, 01:54 PM #48
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Default Re: DIY Laser Power Meter Projects...

Yeah, I bought the .3 version because it was still new in packaging and I liked the idea of being comfortable with it not having been abused beforehand. But I doubt it matters much. It looks like yours is working just fine!
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445nm Survival Laser @ 1.25W - GIFTED
445nm Stainless Steel Monster with H140 diode @1.62A - 2.15W!
450nm rhd single mode @ 190mW

532nm O-like 50 mW pen from Cajun Lasers - small dot, tight beam!
532nm O-like Crown, rated @ 400mW, metered @ ~450mW with AW battery!
532nm O-like Crown rated @ 500mW, not yet tested
532nm RPL-165 @ 204mW
532nm RPL-375 @ 427mW

635nm rhd Lipstick Tube @ ~485+ mW
638nm Fat Boy @ 825mW - custom build

650nm Bolly BL-8006 @ 319mW

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