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Posted: Thursday, August 24, 2006
New SNAP High Density Thermocouple Module
The first of many new Opto 22 SNAP analog modules is ready for release. As you may have read in the recent Control magazine Product Exclusive article (which is why we couldn't talk about it until now), we've recently developed a new SNAP thermocouple/millivolt module
for SNAP PAC and SNAP Ethernet I/O systems. As the loyal OptoProduct Blog reader you are, here's a sneak preview of the new module that will be generally released next week to the press.
The datasheet has all the detailed specs, but the short version is the new SNAP-AITM-8 connects up to 8 T/Cs or millivolt inputs, 4X the amount of our standard thermocouple modules. This results in significant panel space savings for those apps with lots of thermocouple inputs. Plus, you'll save over 30% in per-point costs compared to the standard 2-channel version.
In a related story (I've always wanted to say that), Chevron, with the able assistance of Ryan McCollum of IC Engineering in Richmond, CA, has deployed lots of these new mods for their heating process applications. They're used with SNAP high-density digital output modules (released last year), which perform as the control output of a PID loop (the T/C is the PV input). The high-density digital outputs are configured as TPOs—or time-proportional outputs—and the loop logic is solved by the processor in the local Ethernet brain. This configuration allows—get this—up to 96 loops to run on a single processor with a single IP address. Talk about density and distributed control.
(For you system configuration hacks out there, that's one SNAP Ethernet brain or PAC-R, a 16-channel rack, 3 SNAP-ODC-32 digital output modules, 12 of these new SNAP-AITM-8s, plus 3 breakout boards and cables. That nets out at about $88 per loop, list price. Sorry Emerson.)
We want to thank Chevron and Ryan for their helpful assistance and feedback in developing this new module.
Oh, and the first line of this entry indicated "first of many". Stay tuned to this blog for more breaking news...
-Benson
Posted by bhougland at August 24, 2006 5:41 PM
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