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Tec popped off of Laserbee

While the heat transfer characteristics would change, they would do so consistently.... no? :thinking:

What I mean is after the simple fix, it shouldn't be too difficult to establish, how much of a difference there is based on lasers of known power.

After that you're only dealing with simple arithmetic to correct for the deviation.

For example a known 500mW 405mW now reads 560mW... for 405nm the LPM is off by 12%. Same kind of measurements can be made for the other wavelengths, and I'm sure he has readigs from some of his lasers before.

It's by no means a perfect solution, and re-calibration would be better, but it is a cheaper one.

Possible I'm making some huge mistake in these assumptions, so please correct me if I am.

Edit... looks like Blord beat me by a minute:p
 
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InfinitusEquitas said:
While the heat transfer characteristics would change, they would do so consistently.... no? :thinking:

What I mean is after the simple fix, it shouldn't be too difficult to establish, how much of a difference there is based on lasers of known power.

After that you're only dealing with simple arithmetic to correct for the deviation.

For example a known 500mW 405mW now reads 560mW... for 405nm the LPM is off by 12%. Same kind of measurements can be made for the other wavelengths, and I'm sure he has readigs from some of his lasers before.

It's by no means a perfect solution, and re-calibration would be better, but it is a cheaper one.

Possible I'm making some huge mistake in these assumptions, so please correct me if I am.

Edit... looks like Blord beat me by a minute:p
Click to expand...

What I was kind of suggesting before I was told it wasn't a "simple" fix. How much more complex could it be? I mean if the calibration is an actual reprogramming.... btw, why would one want to build in non-user adjustable calibration into a meter anyways? kind of scratching my head here.
 
Seoul_lasers said:
What I was kind of suggesting before I was told it wasn't a "simple" fix. How much more complex could it be? I mean if the calibration is an actual reprogramming.... btw, why would one want to build in non-user adjustable calibration into a meter anyways? kind of scratching my head here.
Click to expand...

I'm guessing to cut down on production cost. Obviously from a business standpoint you also insure people will come back to you. (Standard practice - just think about how many custom adapters there were for cell phone chargers until recently.)

Would be awesome if it was possible to calibrate via USB/Computer interface itself.
 
Seoul_lasers said:
What I was kind of suggesting before I was told it wasn't a "simple" fix. How much more complex could it be? I mean if the calibration is an actual reprogramming.... btw, why would one want to build in non-user adjustable calibration into a meter anyways? kind of scratching my head here.
Click to expand...

I think he mentioned cost saving.

Cause a who wants to waste 50 cents on a potentiometer. :D
JK

I don't really know, laserbee would have to answer that.
 
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InfinitusEquitas said:
I'm guessing to cut down on production cost. Obviously from a business standpoint you also insure people will come back to you. (Standard practice - just think about how many custom adapters there were for cell phone chargers until recently.)

Would be awesome if it was possible to calibrate via USB/Computer interface itself.
Click to expand...

It is user calibrateable though. :)

Trevor
 
So, since it has to be recalibrated after reaffixing the sensor TEC, and the readings will be somewhat off until then, instead of dealing with off readings we recommend you use the more accurate method of power measurement until your meter is repaired:
Supplies.jpg


Don't worry, it is much better than using an LPM that only gives results that are close to right.
 
He guys I have a nice 445 build for sale
it LPMs at 2500 B/H (that is baloons per hour)
:crackup:
 
Seoul_lasers said:
Ah... I forgot we're talking about a usb device and not the PIC based
Laserbees that use RS232 ports.

as far as putting the TEC back on, sliver epoxy (arctic silver), and or 3M silver epoxy isn't good enough to use?
I though it was some of the best thermo epoxies on the market for sinking?
Just trying to make a suggestion, because the person who bought this LPM doesn't want to spend/invest the money to have someone fix it.
................................. shrug.. shrug ... ????
Click to expand...

Sorry but you are 3 for 3... incorrect again..

The LaserBee 2.5W USB IS a PIC based product and it DOES use
an RS-232 Port that is converted to USB in the unit ...

Seoul_lasers said:
What I was kind of suggesting before I was told it wasn't a "simple" fix. How much more complex could it be? I mean if the calibration is an actual reprogramming.... btw, why would one want to build in non-user adjustable calibration into a meter anyways? kind of scratching my head here.
Click to expand...

As I already stated in post #93 it was to reduce production costs.

If you wanted a Shop Calibration Interface for the budget entry level
LaserBee 2.5W USB we could put one together for you for ~$300.00
if you bought two...

InfinitusEquitas said:
I'm guessing to cut down on production cost.
Click to expand...

Exactly............. The LaserBee 2.5W USB is a budget entry level
LPM. This was one of the ways to bring the costs down.

Trevor said:
It is user calibrateable though. :)

Trevor
Click to expand...

It is Shop calibrateable.....:)

BShanahan14rulz said:
So, since it has to be recalibrated after reaffixing the sensor TEC, and the readings will be somewhat off until then, instead of dealing with off readings we recommend you use the more accurate method of power measurement until your meter is repaired:
Supplies.jpg


Don't worry, it is much better than using an LPM that only gives results that are close to right.
Click to expand...

:crackup::crackup::crackup:.... I like how you think....:eg:


Jerry

You can contact us at any time on our Website: J.BAUER Electronics
 
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lasersbee said:
Sorry but you are 3 for 3... incorrect again..

The LaserBee 2.5W USB IS a PIC based product and it DOES use
an RS-232 Port that is converted to USB in the unit ...



As I already stated in post #93 it was to reduce production costs.

If you wanted a Shop Calibration Interface for the budget entry level
LaserBee 2.5W USB we could put one together for you for ~$300.00
if you bought two...



Exactly............. The LaserBee 2.5W USB is a budget entry level
LPM. This was one of the ways to bring the costs down.



It is Shop calibrateable.....:)



:crackup::crackup::crackup:.... I like how you think....:eg:


Jerry
Click to expand...

Ok, so it is pic based. Great.
Again I fail to see why calibration can't happen in the software? Not totally understanding this.
 
justinjja said:
Yay, 95$ + shipping to fix an lpm I bought for 90$ :undecided:
Click to expand...

well, do you have any lasers that you just measured right before it broke?

reattach the tec and see if it measures the same.

you have to pay for the repair anyways, so why not fix it till it's broke :D
 
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Mohrenberg said:
well, do you have any lasers that you just measured right before it broke?
reattach the tec and see if it measures the same.
you have to pay for the repair anyways, so why not fix it till it's broke :D
Click to expand...

It is "broke" it doesn't measure correctly... :rolleyes:
He said he already re-attached it and it is reading low..

To apply the Sensor correctly it needs pressure on the Sensor which
means the Coating may have been compromised. We coat our Sensor
after they are attached. It is also very important to have a thin layer
of Thermal Epoxy between the Sensor and Heatsink...

The Thermopile head is a sensitive accurate measuring device when
assembled correctly.

In the mean time as was already suggested a few times... the OP
can compare the readings with earlier measurements (he did have
the LPM for 4 months before he broke it) and use that difference on
any measurements after his re-attachment.

It would not be accurate but in the ballpark...

Seoul_lasers said:
Ok, so it is pic based. Great.
Again I fail to see why calibration can't happen in the software? Not totally understanding this.
Click to expand...

As has been stated numerous time already... It DOES happen in
Software/Firmware but you need a Shop Interface to be able to
do any calibration to keep the production costs down...

When you design... manufacture and sell your own products YOU
can decide the way you will do things... ;)


Jerry

You can contact us at any time on our Website: J.BAUER Electronics
 
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lasersbee said:
It is "broke" it doesn't measure correctly... :rolleyes:
He said he already re-attached it and it is reading low..

To apply the Sensor correctly it needs pressure on the Sensor which
means the Coating may have been compromised. We coat our Sensor
after they are attached. It is also very important to have a thin layer
of Thermal Epoxy between the Sensor and Heatsink...

The Thermopile head is a sensitive accurate measuring device when
assembled correctly.

In the mean time as was already suggested a few times... the OP
can compare the readings with earlier measurements (he did have
the LPM for 4 months before he broke it) and use that difference on
any measurements after his re-attachment.

It would not be accurate but in the ballpark...



As has been stated numerous time already... It DOES happen in
Software/Firmware but you need a Shop Interface to be able to
do any calibration to keep the production costs down...

When you design... manufacture and sell your own products YOU
can decide the way you will do things... ;)


Jerry
Click to expand...

hey, I was only asking for clarification. No need to shoot the messanger. You're not under attack by the Rabid Kenometer clan.. I'm just a bystandard.
 
I am a human LPM. You can rent me for $25/hr.

Just shine the laser on the wall next to me, and i'll hold up a piece of paper with the output :beer:

Guaranteed accurate +/-500mW
 
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