1. CO / CO2 LEVEL INDICATOR The Team, S V Ravi Tej, 06881A0438 C Sri Harsha, 06881A0449 P Sai Raghav, 06881A0441

2. CO / CO2 LEVEL INDICATOR

4. Abstract

5. Block diagram

6. Components

7. Flow Chart

8. Operation

9. Applications

10. Advantages

11. Disadvantages

12. Conclusion

14. Abstract

15. Block diagram

16. Components

17. Flow Chart

18. Operation

19. Applications

20. Advantages

21. Disadvantages

22. Conclusion

24. The pollution level in an area should be indicated which became the primary goal of the project.

27. Abstract

28. Block diagram

29. Components

30. Flow Chart

31. Operation

32. Applications

33. Advantages

34. Disadvantages

35. Conclusion

37. Internal Block Diagram

39. Abstract

40. Block diagram

41. Components

42. Flow Chart

43. Operation

44. Applications

45. Advantages

46. Disadvantages

47. Conclusion

49. COMponents (Components in block I) MOC70P3 The MOC70P3 consists of an infrared light emitting diodecoupled to an NPN silicon phototransistor.

51. 5 mm gap

52. .040” aperture

53. Low profile

54. PCB mount

56. Bar or dot display mode externally selectable by user

57. Expandable to displays of 100 steps

58. Internal voltage reference from 1.2V to 12V

59. Operates with single supply of less than 3V

60. Output current programmable from 2 mA to 30 mA

61. No multiplex switching or interaction between outputs

62. Input withstands ±35V without damage or false outputs

65. Abstract

66. Block diagram

67. Components

68. Flow Chart

69. Operation

70. Applications

71. Advantages

72. Disadvantages

73. Conclusion

76. Abstract

77. Block diagram

78. Components

79. Flow Chart

80. Operation

81. Applications

82. Advantages

83. Disadvantages

84. Conclusion

86. Circuit diagram( Block I )

87. Circuit diagram( Block Ii )

89. The signal is amplified using the power amplifier (Darlington Pair)

92. Abstract

93. Block diagram

94. Components

95. Flow Chart

96. Operation

97. Applications

98. Advantages

99. Disadvantages

100. Conclusion

102. Applications Alcohol Sensor Alcohol Sensor for use in Breathalyser's or in an alarm unit, to detect the presence of alcohol vapours. This sensor unit offers very high sensitivity, combined with a fast response time. The unit will work with a simple drive circuit and offers excellent stability with long life. Features • High Sensitivity • Detection Range: 10 - 1,000 ppm Alcohol • Fast Response Time: <10s • Heater Voltage: 5.0V • Dimensions: 16mm Diameter, 10mm High excluding pins, Pins - 6mm High

103. Applications High-Accuracy Alcohol Sensor Hot-wire High Accuracy Alcohol Sensor, for use with breathalyser units. Low power consumption, makes this sensor ideal for battery powered units. Wide operating temperature range with little or no adjustment required for temperature and humidity Features • High Sensitivity • Detection Range: 0 - 1,000 ppm Alcohol • Fast Response Time: <20s • Working Voltage: 3.0V • Working Current: ~120mA • Dimensions: 16mm Diameter, 10mm High excluding pins, Pins - 6mm High

104. Applications LPG Sensor Ideal sensor for use to detect the presence of a dangerous LPG leak in your car or in a service station, storage tank environment. This unit can be easily incorporated into an alarm unit, to sound an alarm or give a visual indication of the LPG concentration. The sensor has excellent sensitivity combined with a quick repsonse time. The sensor can also sense iso-butane, propane, LNG and cigarette smoke. Features • High Sensitivity • Detection Range: 100 - 10,000 ppmiso-butane propane • Fast Response Time: <10s • Heater Voltage: 5.0V • Dimensions: 18mm Diameter, 17mm High excluding pins, Pins - 6mm High

105. Applications Carbon Monoxide (CO) Sensor Carbon Monoxide sensor for use in industrial or mining applications. This unit offers excellent long life performance with stable sensing characteristics. Features • High Sensitivity • Detection Range: 10 - 1,000 ppm CO • Response Time: <150s • Heater Voltage: 5.0V • Dimensions: 16mm Diameter, 10mm High excluding pins, Pins - 6mm High

106. Applications Natural Gas Sensor Detect dangerous gas leaks in the kitchen or near the gas heater. This unit detects 300 to 5000ppm of Natural Gas. Ideal to detect dangerous gas leaks in the kitchen. Sensor can be easily configured as an alarm unit. The sensor can also sense LPG and Coal Gas. Features • High Sensitivity• Detection Range: 300 - 50,000 ppm Natural Gas• Fast Response Time: <10s• Heater Voltage: 5.0V• Dimensions: 18mm Diameter, 17mm High excluding pins, Pins - 6mm High

108. Abstract

109. Block diagram

110. Components

111. Flow Chart

112. Operation

113. Applications

114. Advantages and Disadvantages

115. Conclusion

117. Circuit is Flexible

119. Abstract

120. Block diagram

121. Components

122. Flow Chart

123. Operation

124. Applications

125. Advantages

126. Disadvantages

127. Conclusion

129. Pollution Indicating Mechanism.2.Pollution Sensor – Senses Pollutants. Pollution Indicator - Indicates Pollutant Level. 3.Just by replacing the sensor a new pollutant indicator is created.

131. Abstract

132. Block diagram

133. Components

134. Flow Chart

135. Operation

136. Applications

137. Advantages

138. Disadvantages

139. Conclusion

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