The equipment was designed and proven in the field over a 25 year period starting in 1994, so here are both the bland PDL/CDi History v1.0 and the spicy PDL/CDi History v2.0 versions of the same history. The equipment implements the functionality requirements as outlined in an August, 2000 gas production optimization paper written by Dan Sparkes. Extremely low power consumption rates have been achieved, active battery life is approaching battery shelf life, all calibration is now obsolete, most routine maintenance is eliminated by using state-of-the-art digital pressure transmitters supplied by Keller in Switzerland, and because of the new assembly method *6Z the boards are now potted for life, "life" meaning at least twenty years. The extremely low power consumption rates are due to interval-based recording and switching, the controllers are "asleep" most of the time, sleep current across all devices is around 5μA or 0.000005A. The technical roadmap is an outline of where the equipment has come from and where it is going.

The CDi3 machine class not only survived the legal mumbo-jumbo, the "Corvette" evolved into the "Ferrari" because of the legal mumbo-jumbo. So the CDi3 class now exists in two classifications: 1) Primary/Ferrari, meant only for group intermitters AKA programmable chokes for groups of wells and 2) Secondary/Corvette, meant for simple flow meters, plunger lifts with or without plungers, and backup switchers. As such, there are three distinct price levels, 1) Secondary Flow Meter, 2) Secondary Switcher, and 3) Primary Switcher.

• We treat equipment built before August 15, 2017 the same way the former "owners" treated it after August 15, 2017: scrap. Examples: pile 1, pile 2, pile 3, pile 4, pile 5, pile 6, and pile 7. There are only two exceptions still under former DELP control and these will be treated as spare parts: Switchers #115 and #116, both a subset of the original five digital prototypes of 2010, which had already been converted to CDi3-class switchers in October 2016. Since these two were not built with assembly method *6Z they will not be supported, however, they could be firmware-updated to be compatible with CDiDemo, in which case they would be subject to pricing level 2. The other three, #117, #118, and #119 are already in the *6Z pipeline, all five seemingly purchased by the incoming Dundee in 2010 but actually paid for by the outgoing TLM.
• Regardless of procurement costs, all offshore devices built with assembly method *6Z incur a monthly usage charge based on device operational mode, primary/secondary, since the latest assembly method all but eliminates maintenance. The suggested charges are based on the fact an average ILOT currently costs around $200 while an average visit costs around $2,000. So a flow meter costs $200/month and a switcher $300/month in addition to whatever procurement costs.