CPSpro Polygraph Systems

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cpspro polygraph systems

The CPSpro System includes Abdominal and Thoracic mechanical bellow styled pneumograph assemblies, 3 EDA leads (one with Gold-plated finger plates, one with snap leads and one a package of snap Ag/Cl repositionable, disposable gel leads, and one with laboratory style cups with a bottle of gel), cardio cuff assembly, and seat movement sensor.

Foot and arm movement sensors, plethysmograph (PLE), and other additional components can be purchased and added separately.

Contact us for a quote (call: 800-860-9775 or email: polygraph@stoeltingco.com)  

88888 Contact us for pricing and configurations

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Since 1930, Stoelting has been on the forefront of design and manufacture of reliable polygraph instrumentation. Our third generation Computerized Polygraph System (CPS) represents the very latest in state-of-the-art digital technology and innovation.


  • High resolution 24-bit analog-to-digital conversion circuitry
  • Records up to 13 channels
  • Medical grade LEMO and Luer inputs and connectors
  • Use either electronic or pneumatic respiration pneumograph
  • Use either Skin Conductance or Skin Resistance
  • Cardiograph supports up to 200 mm Hg.
  • Plug and Poly via a USB 2.0 connection. No driver installation is required.
  • Use with current easy-to-use, powerful, and feature rich CPS software

CPSpro allows you to quickly, easily and accurately measure:

Thoracic Respiration Channels
Records thoracic respiration using either classic bellow-styled pneumograph or electronic pneumograph

Abdominal Respiration Channels
Records abdominal respiration using either classic bellow-styled pneumograph or electronic pneumograph

Cardio Channels

  • Blood Pressure—Records relative blood pressure and pulse rate. Cardiograph provides continuous digital display of subject’s pulse rate and cuff pressure, eliminating the need for a pressure gauge on the cardio tubing. Optimal cuff pressure is pressure is between 52 and 62 mm Hg for subject comfort. Range is 0 to 200 mm Hg. CPSpro Fusion software implements a continuous digital display on your computer screen of subject’s pulse rate and cuff pressure that eliminates the need of a sphygmomanometer
  • Finger Cuff—Records blood volume and pulse rate from an occlusive finger cuff. Range is 0 to 200 mm Hg.
  • Plethysmograph —Records pulse rate and blood volume changes from the fingertip using a photoelectric sensor.

EDA Channels

  • Skin Conductance—Records electrodermal activity using a low constant voltage circuit (0.5V)
  • Skin Resistance—Records electrodermal activity using a low constant current circuit (2.5µA)
  • Aux 1 (Skin Potential)—Records the electrical activities of the sweat glands themselves, with no external voltage applied to the skin

Miscellaneous Channels

  • Activity Monitor—Records subject body movements from an activity sensor pad for seat, feet and/or arms..
  • Voice Marking Channel—Records the exact moment of question onset and offset (examiner), and the moment of answer (subject).
  • Aux 2—This channel can be configured to record Pupil diameter, Skin Temperature, EKG, continuous blood pressure, or others.

For more details, contact Polygraph@StoeltingCo.com.