electronic expansion valves

[bill1983]

http://www.carel.com/carelcom/web/download?nome_file=/carelcom/web/@extsrc/@eng/@catalogo/@documenti/@manuali/030220811.pdf

click on the link for a good document on electronic expansion valves, or superheat control devices, it explains "gain integral and derivative" terminology as used mainly on elm and rdm controllers, but also on many others. its a must read for those new to this type of technology.:cool:

[Brian_UK]

Thanks Bill, good link.

[matt.yelland]

Nice link.... Thanks for sharing

[Colin G]

will be printing this off, cheers for that. I have a document somewhere for checking resistance on the motor windings will see if i can upload it somehow

[supermarketguy]

Thanks for that Bill,

Better than talking to the Wife :o

[moideen]

thanks to bill,useful link

Moideen-dubai