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No access to any LPM owner; what's the most accurate and easiest to make DIY LPM?

Richie89

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May 9, 2015
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I thought about making one from a DIY post but I'd rather just save a little and get an accurate and reliable one from Lasersbee or Hyperion.
 

astralist

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Mar 27, 2011
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Actually the TEC/peltier in the seebeck configuration
is not used as a temperature sensor for LPMs.
It is used as a differential voltage sensor between the
front and rear plate's differential temperatures. :)

Jerry
I am sure that the terms of "temperature sensor" would be more understandable for a beginner :D
 

lasersbee

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I am sure that the terms of "temperature sensor" would be more understandable for a beginner :D
It will only confuse a beginner into thinking
a thermometer is a Laser Power Meter Sensor
which it is not...:yh:

Jerry
 
Last edited:

Benm

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Aug 16, 2007
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Well, it essentially is, at least when it measures the difference in temperature across a known thermal resistance, very similar how you would use a voltmeter with a shunt of known electrical resistance to measure current.

The problem is mostly that 'known thermal resistance' which you cannot purchase like a know electrical resistor you can use as a shunt to measure current by looking at the voltage across it.
 




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