Is your diode something like this?
http://www.omega.com/pptst/CY670.html
If you can measure in the 2-wire mode, one of the Arduino boards might
just satisfy your requirements. The Arduino mega2560 has 16 ADC
channels at 10-bit and can communicate readings out the USB connection
without any added hardware shields. We have developed just recently a
simple command/response protocol and Stream support example that seems a
good training example for Stream protocol files.
~$60
http://www.amazon.com/SmartProjects-Mega-Arduino-MEGA-Board/dp/B004A7H3DG
~$30 http://www.amazon.com/OSEPP-Mega-2560-Arduino-Compatible/dp/B005SUXZT0
Requires: EPICS + asyn + USB port + our epicsduino code + linux IOC
Pete
On 8/14/2013 4:39 PM, Arnold, Ned D. wrote:
Hello all -
Has anyone implemented a cost effective solution for monitoring large
quantities (~96) of thermal diodes for cryogenic temperature monitoring
(down to 2K)? The solution proposed here is either the Lakeshore Model
218 or Model 224, both of which are ~$250/channel ... I was hoping to
find something cheaper.
Any proven alternatives?
Thanks -
Ned
PS: I searched tech-talk and only found solutions for RTDs or
thermocouples ...
--
----------------------------------------------------------
Pete R. Jemian, Ph.D. <[email protected]>
Beam line Controls and Data Acquisition, Group Leader
Advanced Photon Source, Argonne National Laboratory
Argonne, IL 60439 630 - 252 - 3189
-----------------------------------------------------------
Education is the one thing for which people
are willing to pay yet not receive.
-----------------------------------------------------------
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