Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

Lpm

blakegriffin

blakegriffin

0
Joined
Aug 10, 2011
Messages
250
Points
0
Hi every one, my new lpm should be arriving tomorrow or the next day. I have a question on an lpm. Does it tell you the power by reading the heat that your laser makes? Also how should I focus the laser beam in the censor should it be to a pinpoint?
 





joshshermannn1

joshshermannn1

0
Joined
May 29, 2011
Messages
532
Points
18
what LPM did you get? there are different kinds of sensors, DONT focus it a pinpoint. it will ruin your lpm...
 
Last edited:
joshshermannn1

joshshermannn1

0
Joined
May 29, 2011
Messages
532
Points
18
nice! i want one of those... to be honest i would direct you to laserbee, he knows way more than anyone about LPM's. thermophile sensors are heat sensers IIRC.
 
lasersbee

lasersbee

0
Joined
Sep 20, 2008
Messages
17,622
Points
113
blakegriffin said:
Hi every one, my new lpm should be arriving tomorrow or the next day. I have a question on an lpm. Does it tell you the power by reading the heat that your laser makes? Also how should I focus the laser beam in the censor should it be to a pinpoint?
Click to expand...

That information should be detailed in the User Instructions
that should be supplied with your LPM..

joshshermannn1 said:
nice! i want one of those... to be honest i would direct you to laserbee, he knows way more than anyone about LPM's. thermophile sensors are heat sensers IIRC.
Click to expand...

Thermopiles actually measure heat differentials...
That's not the same as a thermometer...;)

Jerry
 
Last edited:
MarioMaster

MarioMaster

0
Joined
Jul 27, 2007
Messages
3,642
Points
63
Right. The meter works by measuring the heat flow from the sensor face to the heatsink.

Do NOT focus your laser to a pinpoint. Doing so will likely burn the coating and damage the sensor. Focus the laser either to infinity (small dot on a far wall) or expand it slightly. Make sure the entire dot is hitting the sensor.
 
DTR

DTR

0
Joined
Jun 24, 2010
Messages
5,684
Points
113
Here this should help you keep from burning your sensor. Just because it is not focused to a pinpoint on the wall 5 feet away does not mean it wont be if you put it on your sensor. Focus the laser past Infinity(using that term lightly).:beer:

focusw.png
 
lasersbee

lasersbee

0
Joined
Sep 20, 2008
Messages
17,622
Points
113
A trick we use in the Shop is to have a 2nd non Sensor
mounted Radiator beside the Thermopile sensor and
adjust the Laser's beam on it.
Then when the diameter of the Laser's beam is within
specs stated in our User Instructions we move the beam
over to the Thermopile Sensor.

@ DTR..
Good way of showing the possible wrong focus on a sensor
by using the focusing at a distance method... :gj:


Jerry
 
Last edited:
You must log in or register to reply here.




Top