5 Watt Laser Power Meter by Nospin



This meter Features a New Real Ophir Thermopile and is very accurate as confirmed and reviewed by

Jayrob Here
LPM with Ophir Sensor from nospin - Awesome!



This meter is capable of accurately measuring all Lasers from 1mw to 5 watts in 1 mw increments. The Ophir OEM thermopile features a large 12mm aperture broadband absorber and has a damage threshold of over 20 watts!

It also features an integrated Ophir designed amplifier that is very sensitive
and requires no zero adjustment control.



The power supply designed into this meter is built for World Wide use
and requires no adapters to use it from 100 up to 240 volts at either 50 or 60 Hz. It incorporates a transformer less design by utilizing all switching
supplies in the power circuit.



The entire meter uses only 60ma in operation and generates no wasted heat
so it can be used with a car adapter or battery pack as described in Jayrobs
review. In which on AAA battery power would run for 20 hours!

Features:
True Ophir Thermopile
1mw to 5 Watt range
>20 Watts damage threshold
large 12mm aperture broadband absorber
World Wide power capability 100 to 240 volts 50 to 60 Hz
Can be used with DC supply
Choice of Red or Blue display color
24" shielded cable on thermopile with detachable DIN connector
Wood grain aluminum enclosure with rubber feet
4" tripod included
1 amp fuse is standard
1 Year parts and labor warranty
In stock and ready to ship!


$399 US for the meter and Thermopile sensor, tripod, Worldwide AC adapter and Priority Mail shipping in the USA


International shipping costs elseware

Send me a PM if interested in purchasing this quality meter

Paypal to: no-spin@comcast.net

I realize that these sensors easily pick up the heat from your hand if you get within a few inches of it. But After you told me that they were sensitive enough to pickup your body heat from a farther distance, I noticed that mine went up to 1mW while sitting on my desk in front of me...

It was about 2' in front of me, and I had it on for a few minutes when I noticed that it went from zero, to 1mW. So I turned it 90 degrees and it went to zero!

It was reading my body 2' away! I tested it a couple of times and this was indeed the case...

So I found that if you have the thermopile turned at a 45 degree angle (away from your body), it won't pick up your body heat from 2' away, and will go to zero...

OMG, that's amazing!

But hopefully the "disturbance factor" from external sources is minimal. It's hard to measure a 1mW LP is you happen to be holding it with your (warm) hand... :-/

Yeah I agree.... that's where the "Auto reset" seems to elude me...

If you are ready to shine a Laser onto the sensor while holding
it.. you would be close to it to be able to hit the exact center of the
12mm sensor. (at a greater distance it would be difficult to hold the
Laser's beam steady).

When I take a measurement... my identical OHIR 20C-A head increases
by 2mW. If I measure a low powered 10mW Laser it shows 2mW higher
than actual.
That is a 20% error on 10mW. I understand that with a 100mW laser..
2mW is only 2%...
But I would still think that a manual Zeroing control would still be a useful
feature...

Jerry

Yeah for sure if your measuring by holding the laser near the sensor with your hand then it will be measuring a couple of mW's higher because of your hand...

Of course you can easily use something else to hold the laser, or even just subtract a couple of mW's...

Jerry

Its no error, When you expose the thermopile to calories of energy its job is to
measure them not differentiate between multiple sources

Send me your sensor and I will calibrate it for free

Jim

5 watts wow closest i have to that is 1/4 watt sweet meter though

Hey Jim...
I'm game.... Thanks...
PM me your Address and I'll send one down to you...

Jerry

Great
I sent you a PM

Jim

Great news I jusy PMed you as well....

Found out that the OHIR Heads we have are all calibrated
differently near Zero... I saw a settling value of 0 to +8mW.
Also found a way of Adjusting to Zero on our Lites....

Thanks for your offer just the same....

Jerry

Good deal Jerry!

They are sweet

Jim

These look great! PM sent.

Please respond to my PM.

Sorry thought it was a duplicate message

Jeff your meter is on its way
Let me know when you get it

Thanks again

I got my meter today! It works great!

It is a great meter
Glad you like it!!

Thanks!!

Hello Everyone,

I got my Nospin meter a few days ago. You've already seen the pictures and the reviews are correct so I won't go into all that stuff.

I like the meter, yes it does look like a clock radio :-) but it works great for the money. The box is pretty good, it's metal and pretty stiff for it's thickness. If the box only came in woodgrain I can see why Nospin used it.

The only thing I can add to whats already been posted about this meter is a video showing it's response.

Here it is reading a 5mw red and a 150mw green. Both lasers are right on spec. The reason I put this up was to show it's repeatability.

YouTube - powermeter.avi

I'll be taking it to a friends place to check it against his Coherent meter later this week but it certainly looks like its working properly.

I made a cover to protect my sensor. If anybody else gets this meter I would suggest you put a cover on it too. It's brand new, you don't want to mess it up.

Nice video...

This shows why I wrote the kind of review that I wrote on this meter...
LPM with Ophir Sensor from nospin - Awesome!

It works very reliably... Jim knows how to check and adjust the sensor if needed. So that when you get it, it is perfectly calibrated.

Mine works perfectly just like yours does...

I am just as impressed that fatboy55's lasers are exactly on spec. Also, I found that a breeze from open windows in the room can skew the measurements +1 or +2 mW. I also found that a very hot room, 80 degrees F or above, will also add 1 or 2 mW to the reading. However, once I moved the LPM into a colder room (about 75 degrees F) with no windows the errors went away. What's weird is that really cold temperatures don't affect the LPM at all while only slightly hot temperatures do. Does anyone else experience the same thing?

The errors are completely understandable though. I know that temperature can affect the resistance of the various electrical components inside the LPM.

So was I. I knew the 5 was and really the 150 isn't. Sometimes it's lower or higher, it's a piece of junk. I just got lucky when I did the video.

I'm sure if I did it 5 min before or after it wouldn't have been 150.

I thought about reshooting it as some people would think I faked it but being on spec is too cool to not post even if it was just luck.

I'll post the results after I compare it to the coherent.

Nice test Video...I would have preferred a red Laser since
they are known to be more stable...
Although I have a few green Labbies that are quite stable
after they warm up.
As was stated... If the OHPIR Head's Internal circuit is
Zeroed at (lets say) 25 deg C... the LPM will drop to zero
around that same calibration temperature almost every time
without ant other external influences...

Jerry

archeometry

Your meter is shipped priority mail today
let me know when you receive it

Thanks again!

Most impressive work, Nospin....KUDOS ! As an FYI (not sure if it is relevant or not) Coherent includes a "customizable sensor cover" with their top-of-the-line meters....IT'S A CAN COOZIE ! Yeah, a "thermal cover" for the sensor is actually a can-blanket. You slide it over the sensor's head and trim it to fit. They couldn't be bothered on their $2000 + meter to trim the freaking cover first. WOW. You MAY wanna try to see if one would prevent the issues with thermal drift ! Post your results, if you have time to try this, thanks ///Greg

does anyone know if he still sells these?