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CDi3.FTe Submersible, Universal Gas-Field Controller
Keller Digital Pressure Transducers/Transmitters
Burkert Solenoid Modifications
PDL/CDi History: Pembina Lake Erie Datalogger
LD Series Pressure Transmitters
CDi.P5.FTe Submersible Natural Gas Flowmeter
Long Range RF Link (900MHz)
CDiComm Remote Monitoring and Control Software
CDi.P5.Sw Submersible Natural Gas Flowmeter and Intermitter
CDi3.FTe Submersible, Universal, Gas Field Controller
ZDL5 Simple Submersible Flowmeter
CDi.P5.Sw Submersible Natural Gas Flowmeter and Intermitter
CDi.P5.Sw Submersible Natural Gas Flowmeter and Intermitter
  • Obsolete (new ones can no longer be made), but still in use.
  • Originally built from 2006 to 2008 with NPT cylinders and VR (Variable Reluctance) pressure measurement.
  • All Keller pressure measurement, running in analog mode, universal gas-field controller, 11"x11"x11" cube.
  • Designed to be perfectly comfortable at the bottom of Lake Erie, can be used as a line controller, plunger lift, intermitter, etc.
  • Fully-on, fully-off type of controller. Wakes up, reads everything, stores everything, operates the switch if it has to, and goes back to sleep 6.2 seconds later.
  • Programmable interval from 1 minute to 12 hours, with one minute resolution. Due to this operating mode, it can run without recharge for years.
  • State-of-the-art PA10LHX singles and PD10LHX differential Kellers, all Hastelloy C276 construction, sourced from Keller in Switzerland.
  • Field-replaceable differential and switching cylinders, pressure transmitters.

Routine installation example @ lake bottom.
Typical plot output from a group intermitter recorded over the 2011-2012 winter. There is about 2 miles of upstream pipeline behind this one. Significant line pressure reductions have been achieved...
Reading (Differential) Cylinder
316L Differential Cylinder with Hastelloy Differential Keller (PD10) Housing
Switching Cylinder
316L Switching Cylinder with Burkert Solenoid
  • 316L cylinder contains a latching type of solenoid, sourced from Burkert in Germany and a 10,000psi penetrator originally sourced from Impulse in California (now a Teledyne Company).
  • The solenoid can switch at pressures of up to 140psi, so it is meant to be supplied through a pressure regulator. The lake operation has had a 20-year period of successfully using these 6V, low-power, media-isolated, latching type of valves.
  • Waterproof, quick connectors allow very fast change-out of the entire cylinder in the field.
  • The solenoid is used as a pilot valve to operate a pneumatic actuator which in turn does the actual well switching.
Keller Digital Singles
Keller Singles, Submersible Version
  • Keller PA10 series, 0.05%FS-class-over-temperature pressure transducer, coupled with a Xemics XE8805A-based (now Semtech) board.
  • Hastelloy C276 business end, all other metal 316L, 4-wire connection, 2 committed to power, the other 2 for either digital communication or analog output, mechanical pdf drawing here.
  • See this page for more info on the Kellers.
PVC Frame
PVC Frame by Steve-O-Meister
  • Supporting frame made of PVC stock with 316 SS hardware, original design by Adam-Meister of the Welland Meister Club, perfected and built like a tank by Steve-O-Meister of the Port Colborne Meister Club.Top
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