v4

• PNEUMOGRAPH COMPONENT

  • It is designed to detect changes in respiration of the subject. Its major components are the pneumograph chest assembly and the recording unit.​
• PNEUMOGRAPH COMPONENT​

  • Rubber convoluted tub​
  • Beaded chain​
  • The pneumograph recording unit​
• Rubber convoluted tube - which is ten inches in length corrugated rubber attached to the chest and abdominal area of the subject. One end of the tube is sealed and the other end is connected to the instrument by a rather thick walled rubber tube considerably larger in diameter than the pneumograph tube itself, it expands and contracts as the subject breathes.
• The beaded chain - another component of the pnuemograph assembly is used to fix in place the rubber convoluted tube.
• GALVANOGRAPH COMPONENT

  • Its primary function is to detect changes or alterations in skin resistance of the subject. It is made up of the following components: ​
• GALVANOGRAPH COMPONENT: ​

  • Finger electrode​
  •  Recording pen unit ​
  •  Amplifier unit​
• GALVANOGRAPH COMPONENT:

  • Finger electrode assembly which has a finger electrode and retainer bond attached to the left index and ring finger of the subject. And a connecting plug designed to fasten the system to the polygraph machine. ​
• GALVANOGRAPH COMPONENT:

  • Recording pen unit which is usually 7 inches in length. 
• GALVANOGRAPH COMPONENT:

  • Amplifier unit which is made to support the galvanometer in converting electrical to mechanical current.​
• KYMOGRAPH COMPONENT:​

  • Its primarily serves as the paper feed mechanism of the polygraph machine.
  • It is the device that records the different tracings by driving the paper out under a recording pen unit.
  • It pulls or drives the chart paper under a recording pen unit. It pulls or drives the chart paper under a recording pen simultaneously at the rate of 6 to 12 inches per minute. The chart must travel at a uniform speed to facilitate valid interpretations.
• KYMOGRAPH COMPONENT:​

  • Chart Paper is driven past the recoding pen shaft at a uniform speed six (6) inches per minute. Chart rolls are approximately 100 ft. Holes spaced ½ inch apart. The paper is imprinted with horizontal lines at ¼ inch interval twenty divisions and vertical lines at 1/10 inch intervals with heavy lines at ½ inch divisions across the paper which represents five (5) seconds of time​
• KYMOGRAPH COMPONENT:​

  • Pulse rate per minute may be computed by multiplying the number of beats counted in one divisions by twelve (12) its major parts are as follows: ​
• Chart which is rolled graph paper composed of twelve (12) divisions in sixty (60) seconds run designed to measure the rate of various body functions.
• KYMOGRAPH COMPONENT:​

  • Rubber roller which pulls the paper out of the machine.  ​
  • Paper rail guide which serves to secure or ensure the chart paper’s forward movement without shaking. ​