SL CONTENT Page No 1 Devices Used 3

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2 SL CONTENT Page No 1 Devices Used 3 1 Aerocet-531 Mass Particle Counter/Dust Monitor 3 2 Isokinetic Probe 3 3 Temperature and Humidity Sensing device 4 4 Hygrometer 4 5 Ball Flow Meter 4 2 Flow Rate Study 5 3 Experimental Analysis Inside System Lab Under ground: CeNSE Campus Near Sprinkler, CeNSE Campus Vehicle Exhaust D-Gate Inside D- Gate Out Side Centenary Visitors House IISc Main Building Old Hostel Building New Hostel Construction Site Near SERC Inside C.V. Raman Gate C.V. Raman Circle CISTUP On Moving Vehicle At 30km/h X-Ray Laboratory, Health Centre 4 Temperature-Humidity Table 17 5 Summary

3 1. Aerocet-531 Mass Particle Counter/Dust Monitor Counts individual particles using scattered laser light and calculates the equivalent mass concentration using a proprietary algorithm. This unit provides both particle counts or mass PM measurements as stored data logged values, realtime networked data, or printed results. All five important mass size ranges (PM1, PM2.5, PM7, PM10, and ) are displayed in mass mode as well as two popular cumulative particle sizes ( 0.5 and 5.0 microns) in particle mode.. Applications for a Handheld Laser Particle Counter: Maintaining cleanroom standards Filter performance testing Pharmaceutical production Mould testing Computer hard drive disc production Automotive spray paint operations Surgical rooms Aerospace Semiconductor Industry Controlled Environments Indoor/outdoor Air Quality Hospitals & Clinics Process Control HVAC Applications Filter Testing Mining & Ore Processing Emission Sourcing Remote Sampling 2. Isokinetic Probe This is a probe which reduces the count errors related to the sample flow velocity and the aerodynamics of small particles. 3

4 3. Temperature and Humidity Sensing device The following instrument is attached to the Handheld Laser Particle Mass Counter for Measuring the temperature and humidity. 4. Hygrometer A hygrometer is an instrument used for measuring the moisture content in the environmental air, or humidity. Most measurement devices usually rely on measurements of some other quantity such as temperature, pressure, mass or a mechanical or electrical change in a substance as moisture is absorbed. From calculations based on physical principles, or especially by calibration with a reference standard, these measured quantities can lead to a measurement of humidity. In this particular we have used the below hygrometer, considering its reading as standard. There are two thermometers in which one of them is made wet to absorb the moisture. The two thermometer readings are noted down and the humidity is calculated using the hygrometric table. 5. Ball Flow Meter Ball Flow Meter is basically a measuring instrument used to measure the flow of air passing into the PMC. 4

5 Date :3 rd April 2012 This Flow Rate Experiment was conducted inside system lab, CeNSE. Here the change in Temperature and Humidity is observed to be minimal and hence Temperature and Humidity are assumed to be static throughout the experiment. Time : 11:15:05 Temperature: 25 0 C Humidity : 42-44% The graph is plotted by taking flow rate values on X-axis and Particle Mass/Count Value on Y-axis. 5

6 Serial No Flow Rate (Litre/min) PM PM 10.0

7 Number of Particles Serial No Flow Rate (Litre/min) 0.5u 0.5u /Liter /Liter /Liter , 61 3, , , , , , 75 4, , , /Liter

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9 Location -1 Inside System Lab PM , DATE : 4 th April 2012 TIME : 9:51:42 Location -2 Under ground: CeNSE Campus PM , DATE : 4 th April 2012 TIME : 10:09:36

10 Location -3 Near Sprinkler, CeNSE Campus PM , DATE : 4 th April 2012 TIME : 10:22:22 Location -4 Vehicle Exhaust PM , DATE : 4 th April 2012 TIME : 10:37:04

11 Location -5 D-Gate Inside PM , DATE : 4 th April 2012 TIME : 10:46:42 Location -6 D- Gate Out Side PM , DATE : 4 th April 2012 TIME : 10:51:17

12 Location -7 Centenary Visitors House PM , DATE : 4 th April 2012 TIME : 11:02:26 Location -8 IISc Main Building PM , DATE : 4 th April 2012 TIME : 11:15:22

13 Location -9 Old Hostel Building PM DATE : 4 th April 2012 TIME : 11:29:49 Location -10 New Hostel Construction Site PM ,82,415 1,28,289 DATE : 4 th April 2012 TIME : 11:34:07

14 Location -11 Near SERC PM ,556 7,019 DATE : 4 th April 2012 TIME : 11:46:30 Location -12 Inside C.V. Raman Gate PM , DATE : 4 th April 2012 TIME : 12:09:05

15 Location -13 C.V. Raman Circle PM ,085 1,403 DATE : 4 th April 2012 TIME : 12:15:04 Location -14 CISTUP PM , DATE : 4 th April 2012 TIME : 12:32:20

16 Location -15 On Moving Vehicle At 30km/h PM , DATE : 4 th April 2012 TIME : 12:47:43 Location -16 X-Ray Laboratory, Health Centre PM , DATE : 4 th April 2012 TIME : 13:45:55

17 Temperature ( 0 C) Humidity(%) Hygrometer PMC Error Hygrometer PMC Error Sl No Location 1 Inside System Lab Under ground: CeNSE Campus Near Sprinkler, CeNSE Campus Vehicle Exhaust D-Gate Inside D- Gate Out Side Centenary Visitors House IISc Main Building Old Hostel Building New Hostel Construction Site Near SERC Inside C.V. Raman Gate C.V. Raman Circle CISTUP On Moving Vehicle At 30km/h X-Ray Laboratory, Health Centre

18 The Maximum temperature error observed was C. The variation is small. Hence the RH/temp meter is reliable to calculate temp in most of the cases. The maximum Humidity error is found out to be 37%. The difference is large and may lead to errors where humidity is an important factor. The large error may be due to sudden variations in the local humidity to which the instrument have slow response. Also, there are some cases where the error is low sometimes even zero. Hence, an additional more accurate humidity meter should be considered for the calculation purposes. From analysis the number of particle.5u/liter : 1. At outdoor environments where the temp varies from C the particle count is normally Near the exhaust of a vehicle the count varies within At construction site where the dust is maximum the count reached In air conditioned environments like Systems Lab, Cense the count is less than The above results may vary depending on locations and the range may change due the randomness in the environment. 18