nospin
0
- Joined
- Feb 13, 2010
- Messages
- 182
- Points
- 0
Kenom
I'm not trying to copy anything, I got a great deal on a lot of these Ophir Thermopiles
and came up with smartly designed supporting hardware to get the most out of these superb heads and the power needed to run it.
And a metal enclosure
As for how it zeros out
I'm an honest man and I've been involved in electronics since the sixty's
and built my first laser in 1982 and it still works!
This is a great and well built meter and I would never try to copy some others
achievements.
I built this unit without seeing any other hobbyist LPM's
I have the highest respect for you Ken!
Jim
I'm not trying to copy anything, I got a great deal on a lot of these Ophir Thermopiles
and came up with smartly designed supporting hardware to get the most out of these superb heads and the power needed to run it.
And a metal enclosure
As for how it zeros out
04-28-2010, 08:03 AM
Here is what its doing
when you touch the heat sink or heat the sensor disc you are speeding up the equalization of temperature
difference between the sensor disc and the sink by changing the temperature of one of the junction sides
It doesn't effect the final value, that is achieved with a fine calibration adjustment.
Whether you touch it or not when you stop effecting the difference between the two
sides it will eventually settle to the calibration setting.
Jim
I'm an honest man and I've been involved in electronics since the sixty's
and built my first laser in 1982 and it still works!
This is a great and well built meter and I would never try to copy some others
achievements.
I built this unit without seeing any other hobbyist LPM's
I have the highest respect for you Ken!
Jim