Automated Confining Pressure Controller

The Automated Confining Pressure Controller LEACP series generates and maintains the confining pressure on a core sample during core studies. It holds a fixed confining pressure setpoint, or keeps a constant differential to the pore pressure so that the stress on the sample stays the same while pore pressure changes. Three models cover confining and pore pressures up to 10,000, 15,000 and 20,000 psi.

How it works

A pump cylinder delivers fluid to the confining circuit and adjusts the displaced volume to hold the setpoint, which the controller measures. In differential mode the controller follows the pore pressure and keeps the confining pressure at the set offset from it. Cylinder capacity falls as the pressure rating rises, from 250 cc on the 10,000 psi model to 125 cc at 20,000 psi.

All models need a 100 psi air supply and 110 to 220 VAC power at 50 or 60 Hz. Wetted parts are stainless steel. The controller is a component for building and maintaining coreflood and special core analysis rigs.

What is included

• Pressure controller with pump cylinder, 125 to 250 cc by model
• Confining pressure measurement
• Stainless steel wetted parts
• Tubing connection, 1/8 in LP or 1/4 in HP by model

Specify for your project

• Maximum confining and pore pressure: 10,000, 15,000 or 20,000 psi
• Control mode: fixed setpoint or constant differential to pore pressure
• Source of the pore pressure signal for differential mode
• Confining fluid and volume of the confining circuit
• Tubing connection type
• Air supply at 100 psi and site power, 110 or 220 VAC

This description defines the product family. Guaranteed performance, included hardware, exclusions, interfaces and acceptance criteria are stated only in the project-specific technical proposal and approved datasheet.

LEACP700:

• Confining pressure: up to 10,000 psi
• Pore pressure: up to 10,000 psi
• Pump cylinder capacity: 250 cc
• Air requirement: 100 psi
• Tubing connector: 1/8” LP
• Power: 110-220 VAC 50 or 60 Hz
• Wetted parts: Stainless steel

LEACP1000:

• Confining pressure: up to 15,000 psi
• Pore pressure: up to 15,000 psi
• Pump cylinder capacity: 175 cc
• Air requirement: 100 psi
• Tubing connector: 1/8” LP
• Power: 110-220 VAC 50 or 60 Hz
• Wetted parts: Stainless steel

LEACP1300:

• Confining pressure: up to 20,000 psi
• Pore pressure: up to 20,000 psi
• Pump cylinder capacity: 125 cc
• Air requirement: 100 psi
• Tubing connector: 1/4 HP
• Power: 110-220 VAC 50 or 60 Hz
• Wetted parts: Stainless steel