Start with 487 for a flowmeter cal and 632 for a valve cal. The dickey john is a fast close system.

Here is a search with alot of pertinent topics.

http://talk.newagtalk.com/search/query.asp?fid=0&action=search&searchforumid=6&keywords=nh3+dickey+john&mode=1&subjects=1&messages=1&author=&collapsethreads=1&days=1&datemode=4&custom-start=01%2F01%2F2008&custom-end=05%2F01%2F2010

Some of them will discuss what the valve cal numbers represent and how to correct flowmeter cals once you have weighed a tank. Basically display reading divided by actual times flowmeter cal equals new cal number.

Edit: I have attached the spreadsheet with the pinouts. Notice there are 2 sheets-31 pin (early) and 37 pin.

GS2_DJ_rate_control_cable_.xls (26KB - 463 downloads)