Single Channel Pneumatic Pressure Controller (APCP)

The Pro-Series Single Channel Pneumatic Pressure Controller (APCP) is an Air pressure controller that utilises a compressed air supply for use in soil laboratory testing. It can be used either to instantly react to water pressure changes in Dynamic tests through an air/water bladder or to control the pore air pressure in Unsaturated tests.

The Air Inlet has an integrated filter to protect the device from moisture ingress. The Single Channel Pneumatic Pressure Controller can control air pressures up to 2,000 kPa through a single-channel control. Additionally, the device includes one auxiliary channel for the connection of an extra analogue transducer.

  • Compact design (small footprint).
  • One independent channel with Pressure control and feedback.
  • Dual point and Single factor calibration options.
  • Pressure channel linearisation with up to 20 points.
  • Ghost calibration option (multiple sensor calibration can be stored in a single channel – Requires connection to Clisp studio).
  • Standalone use via touchscreen display.
  • Fast closed-loop pressure control with internal PID adjustment options as required.
  • High Speed sensor conversion (24 bit, up to 5000 samples/sec).
  • One additional channel for external sensor which can be used for feedback control.
  • Built-in auto protection for sensor limits.
  • Automatic DAC calibration for even faster pressure adjustments.
  • Multiple APCs can be controlled from single PC via a LAN or Ethernet/USB hub.
Clean, Dry Air
Maximum Pressure (MPa)
1 or 2
Input Pressure Required
10 or 22 bar
Number of Pressure Outlets
Pressure Accuracy
0.15% FRO
Pressure Resolution
0.1 kPa
Computer Interface
USB or Ethernet
Local Control via Touchscreen
Power Supply
DC Adaptor (Output 24VDC, Input 90-240V, 50/60Hz, 1ph)
Dimensions (W x D x H)
270 x 250 x 240 mm
Weight (kg)
Test Performed

Triaxial Tests (UU, CU, CD)
Advanced Triaxial and Cyclic Triaxial Tests
Resilient Modulus Tests
Unsaturated Triaxial Tests
Soil Water Characteristic Curve (SWCC)
Unsaturated Direct Shear & Residual Shear Tests

APC Water & Air Distribution Panel

Assists users fill/empty their Pressure Controllers, Triaxial Cells and other pressure chambers. A variety of sizes panels are available to connect multiple devices. Can be supplied with or without a mechanical pressure gauge; which can act as an independent reference point.

Air compressor

Provides compressed air supply to APCP

Air/Water bladder

Used to utilise air pressure for controlling water pressure

Air filter (for APCP)

For filtering the compressed air inlet to APCP


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