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Unboxing the Laserbee II 2.0

Seoul_lasers

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Just though I'd show you what can happen when Noob customs agents can't read the word Repair item. This occurred at the Incheon Intl. International Airport customs.

Firstly, I need to make sure everyone understands that in no way did J.Bauer did anything improperly. problem was with Korean Customs = SNAFU


also like to take this opportunity to thank J.Bauer for helping me out, again!



I am posting these pictures to educate what can happen if things don't "smell" right or are suspiciously marked down in value. None of these were the case here. The computer recognized that this item had been imported before and that set off the alarm.

The tax on normal goods coming into ROK is W150,000 = 16% of total value
The tax on normal items coming into ROK from W400,000 =20%


The fine for under declaring is extremely large here. Customs is EXTREMELY strict.
You can't imagine what kinds of things are Prohibited in the mail and that those can get you deported or fined out your a$$.
A simple Porn mag, hustler = fines and deportation. Totally prohibited by law.

Lastly, I am showing my 849-0 ID on the meter. This picture was taken after opening the box. Reason. I have am unsure if the meter was touched in anyway. It looked like nothing was actually opened in the foam. want to make sure.
 

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lasersbee

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The pink anti-static foam wrapping on your Deluxe LaserBee II
enclosure and Thermopile looks like it was not unwrapped by
Customs. Although I can't be 100% sure..

The Calibration Factor of 849 is exactly what is recorded in our
files for your Deluxe LaserBee II's serial number. It has not been
changed.

As to your statements in general about sending items under
declared just to clarify I checked and both times we shipped
the package was declared a value of $400Cnd for the included
Insurance...;)

Glad you finally have it in your hands and the calibration is
as it should be...:beer:


Jerry
 
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Seoul_lasers

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Well, again thanks.
Now I just got to get a new 9v battery as mines showing
7v now and dragging my readings down.

Btw, at a sensor voltage of 810mV what should my
mW be? I figured the equation should be
XmV x 3.33 = x mW? With the low battery it's showing
XmV x 3.17 = x mW .

There is a measurement sag with low voltage? Just curious?
 

lasersbee

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Well, again thanks.
Now I just got to get a new 9v battery as mines showing
7v now and dragging my readings down.

Btw, at a sensor voltage of 810mV what should my
mW be? I figured the equation should be
XmV x 3.33 = x mW? With the low battery it's showing
XmV x 3.17 = x mW .

There is a measurement sag with low voltage? Just curious?
There is an onboard 5Volt LDO regulator on the LaserBee II
PCB that will allow input voltages of as low as a 6Volt before
readings would be affected.

Your battery could possibly drop below 6Volt under load.
We use rechargeable 9Volt NiMH batteries in the Shop.

As to the Sensor's voltage output...

It is to be noted that these Thermopile Sensors are not
calibrated as the Coherent..Scientec...OPHIR...etc sensors
are.
The calibration does not happen in the heads but on the
LaserBee PCB and in Firware...

Every sensor is slightly different. We do not directly measure
and use the Sensor Voltage data for direct calibration. The
firmware calculates the input voltage after an OP amp and
calculates a scaling factor that can be quite different for every
sensor and coating combination.

Because of these variations in Sensor and Coating characteristics
we keep a record of all the Firmware Calculated Calibration Factors
associated with any LaserBee LPM's Serial Number.

I could do a few manual tests and perhaps give you a range of
powers that your 810mV could represent...

Don't forget that the Thermopile Sensors and Coatings are not
100% linear over the quoted range and the Firmware compensates
for the non linearity over that range.


Jerry
 
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Seoul_lasers

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Ok, good to know.
I was just a bit curious about how the
conversion from mV to mW occurred.
Seems like the numbers 3.17 - 3.33
are the conversion factors for the sensor
voltage. At least for my Laserbee.
Sure I'd like to see what you can compare
In the 810mV range. Could be intesting.
 
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lasersbee

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I grabbed 2 random sensors in stock and put 1000mW on each
of them. One measured 326mV and the other measured 344mV.

For me to test over 2W I would need make a new test setup..


Jerry
 

Seoul_lasers

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So by this token your conversion factor is around ~ 2.9 -3.1

interesting stuff.

There is a little play on each thermopile. There just a hair different each. But enough to throw off calibration. Each one is like an individual, sort of..

by your conversion rate 810mV = 2354mW at 2.906 assuming 1W/344mV
810mV = 2484mW at 3.067 assuming 1W/326mV

My biggest laser is a 2700mWpk - 2400mW av (450/455nm) shows a peak voltage of around ~810mV via DMM. The measurement of the laserbee shows an absolute peak of 2167mW and no higher.

by contrast my 400mW rated O-like 405nm laser has come in at 146mV which gives 447mW at 3.067 and 427mW at 2.906. This is about what I expected. The laser is overspec no matter what sensor conversion is used.
 

lasersbee

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We don't use those conversion factors.....

As I stated before... and what must be kept in mind is
that the raw mV output of our Sensors coupled with our
broadband coating results in a non linear output.

That raw output non linearity is corrected in the Firmware.

Why are you measuring the Raw mV out of the Sensor
when you have a recently Calibrated LaserBee II at your
disposal that will show the output of a Laser in milliwatts
correctly...:thinking:


Jerry
 
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Seoul_lasers

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We don't use those conversion factors.....

As I stated before... and what must be kept in mind is
that the raw mV output of our Sensors coupled with our
broadband coating results in a non linear output.

That raw output non linearity is corrected in the Firmware.

Why are you measuring the Raw mV out of the Sensor
when you have a recently Calibrated LaserBee II at your
disposal that will show the output of a Laser in milliwatts
correctly...:thinking:


Jerry
Yes,
I am interested about thermopile technology in general and how mV - mW process is converted inside the LPM.
Curiosity's sake...

:beer: :thinking:
 
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Arayan

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Today is arrived mine, a great LPM with very high sensitivity. I also grateful to Jerry for having solved immediately (in real time) some software problems related to my PC.
As soon as I will have a new laser, I'll surely show my laserbee II deluxe at work ;)
 




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