Hamamatsu thermopiles

[George Herold]

So on this science listserve, I said that Hamamatsu makes cheap
thermopiles, like these,
https://www.hamamatsu.com/resources/pdf/ssd/t11262-01_kird1112e.pdf

Reading the fine print these all come with 3-5 um AR coating
or even narrower BP at 4.5 um. They plot the response of the tp
out to 20 um and I wonder if they sell a version with no IR AR.
Or if you can decap one.. (or is that a death warrant?)

George H.

 

[Phil Hobbs]

On 2020-02-24 15:21, George Herold wrote:

So on this science listserve, I said that Hamamatsu makes cheap
thermopiles, like these,
https://www.hamamatsu.com/resources/pdf/ssd/t11262-01_kird1112e.pdf

Reading the fine print these all come with 3-5 um AR coating
or even narrower BP at 4.5 um. They plot the response of the tp
out to 20 um and I wonder if they sell a version with no IR AR.
Or if you can decap one.. (or is that a death warrant?)

George H.

Dunno. We use the wideband ones in some of our fire detection gizmos,
and they work great.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[George Herold]

On Monday, February 24, 2020 at 6:01:39 PM UTC-5, Phil Hobbs wrote:

On 2020-02-24 17:57, George Herold wrote:
On Monday, February 24, 2020 at 3:27:18 PM UTC-5, Phil Hobbs wrote:
On 2020-02-24 15:21, George Herold wrote:
So on this science listserve, I said that Hamamatsu makes cheap
thermopiles, like these,
https://www.hamamatsu.com/resources/pdf/ssd/t11262-01_kird1112e.pdf

Reading the fine print these all come with 3-5 um AR coating
or even narrower BP at 4.5 um. They plot the response of the tp
out to 20 um and I wonder if they sell a version with no IR AR.
Or if you can decap one.. (or is that a death warrant?)

George H.


Dunno. We use the wideband ones in some of our fire detection gizmos,
and they work great.

OK are they like ~$50. There was a link to 'klinger' thermo-
pile that cost $1.5k! And then someone said you need a spendy
electrometer to read it... 18 second response time!


Nah, thermopiles are low-Z. Just use a cheap noninverting amp. Don't
try combining the thermopile and thermistor in analogue--that's much
better done digitally.

Right sorry.. (there's a lot of physics types that only 1/2
know what they are talking about...) here's the klinger thing
https://www.klingereducational.com/product/55736-moll-s-thermopile/

150 ohms.

George H.

Cheers

Phil Hobbs


--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[George Herold]

On Monday, February 24, 2020 at 3:27:18 PM UTC-5, Phil Hobbs wrote:

On 2020-02-24 15:21, George Herold wrote:
So on this science listserve, I said that Hamamatsu makes cheap
thermopiles, like these,
https://www.hamamatsu.com/resources/pdf/ssd/t11262-01_kird1112e.pdf

Reading the fine print these all come with 3-5 um AR coating
or even narrower BP at 4.5 um. They plot the response of the tp
out to 20 um and I wonder if they sell a version with no IR AR.
Or if you can decap one.. (or is that a death warrant?)

George H.


Dunno. We use the wideband ones in some of our fire detection gizmos,
and they work great.

OK are they like ~$50. There was a link to 'klinger' thermo-
pile that cost $1.5k! And then someone said you need a spendy
electrometer to read it... 18 second response time!

George h.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[Phil Hobbs]

On 2020-02-24 17:57, George Herold wrote:

On Monday, February 24, 2020 at 3:27:18 PM UTC-5, Phil Hobbs wrote:
On 2020-02-24 15:21, George Herold wrote:
So on this science listserve, I said that Hamamatsu makes cheap
thermopiles, like these,
https://www.hamamatsu.com/resources/pdf/ssd/t11262-01_kird1112e.pdf

Reading the fine print these all come with 3-5 um AR coating
or even narrower BP at 4.5 um. They plot the response of the tp
out to 20 um and I wonder if they sell a version with no IR AR.
Or if you can decap one.. (or is that a death warrant?)

George H.


Dunno. We use the wideband ones in some of our fire detection gizmos,
and they work great.

OK are they like ~$50. There was a link to 'klinger' thermo-
pile that cost $1.5k! And then someone said you need a spendy
electrometer to read it... 18 second response time!

Nah, thermopiles are low-Z. Just use a cheap noninverting amp. Don't
try combining the thermopile and thermistor in analogue--that's much
better done digitally.

Cheers

Phil Hobbs


--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com