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For Sale: Gentec TPM-310 Laser Power Meter

FrothyChimp

FrothyChimp

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SOLD

The last of our old power meters is on the block. The meter is a Gentec TPM-310 power meter with thermopile detector. This system will measure from 400-1100nm up to 10 watts selectable. The unit is used with some blemishes but works great. It is battery powered, operating on four 9V batteries.

Price: $200.00
Shipping: About $10.00 or less USPS Priority

If you are interested send a PM. Payment can be made via PayPal. First PM gets first right of refusal. The picture below is the actual unit. What you see is what you get.

Gentec_TPM.jpg
 





MarioMaster

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lol @ four 9v batteries, but the unit im sure is very nice for anyone that needs a power meter (free bump)
 
FrothyChimp

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There are four slots behind the back cover plate that fit each battery. They must be in parallel because it's been over a year since the batteries have been replaced and it's still going strong.
 
TheMonk

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400nm-1100nm can it measure blu-ray properly since 405nm is on the edge? :cool:
Is the meter calibrated? :p
 
FrothyChimp

FrothyChimp

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I cannot say about 405nm. This was used in a production environment. We don't do anything with 405nm. The meter is not calibrated since it was purchased but is dead nut on as we compare the readings from time to time against our Ophir/Spiricon system which is calibrated. Thermopile heads are very consistent in their output to the meter. As long as you don't start turning adjustment screws inside the meter or abusing it, it will remain accurate.

If someone were willing to loan us their 405nm for testing I could see what the response is to that wavelength versus the response on a calibrated thermopile system.
 
Kenom

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FrothyChimp said:
I cannot say about 405nm. This was used in a production environment. We don't do anything with 405nm. The meter is not calibrated since it was purchased but is dead nut on as we compare the readings from time to time against our Ophir/Spiricon system which is calibrated. Thermopile heads are very consistent in their output to the meter. As long as you don't start turning adjustment screws inside the meter or abusing it, it will remain accurate.

If someone were willing to loan us their 405nm for testing I could see what the response is to that wavelength versus the response on a calibrated thermopile system.
Click to expand...

I would be willing to ship you one of my krytons with a 405nm.
 
FrothyChimp

FrothyChimp

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Kenom was kind enough to loan me a 405nm Kryton for testing with the Gentec. Well the results are in. The Gentec measured 132mW @ 405nm and the calibrated Ophir system measured the output at 130mW.

Also, that diode is freakin' stable! It jumped up to a max of 132mW, there was some jitter for five seconds or so then locked in at 130mW for the rest of the 1 minute test. Albeit it was a 1 minute test but if there was feedback into a cooling system I bet you could lock it in where it never varied. Most diodes are pretty consistent about a central output power varying only a little based on changes from the feedback but you usually don't see a perfectly flat line.

kryton_405.jpg
 
Kenom

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That is one of the advantages of the Kryton laser barrel and the Flexdrive is you see stable operation thanks to the efficiency of the heads design.  The flexdrive continues to output the exact same current throughout the batteries life until it drops below the operating voltage.  I'd have to say that this meter is right on for bluray.

I'm curious what you used to graph this with.  Is it software that this meter comes with or is it something else.  I know that any potential buyers would like to know this as well. Heck if I had the $$ I'd snatch this right up. My Scientech AD30 and AC2500 is 100mw off at 300mw.
 
FrothyChimp

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The graph was not done with the Gentec. The Gentec is a purely analog meter. The graph was generated by an Ophir-Spiricon USBI-1 and a 30A-SH-V1 thermopile detector head.
 
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