I am looking for a process calibrator.  Immediate needs are for 4-20mA
generation.

These are what I shortlisted from ebay:

SAGAS DPC-930
http://tinyurl.com/6mkafd

VC-11
http://tinyurl.com/5awo4b

UNI-T UT712
http://tinyurl.com/5bjq3m

Any advice? recommendation? thinking? for these or other calibrators.

Cheers, Ling SM
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