Ambient Air quality Monitoring Guidlines. - Maharashtra Pollution ...

15.0 OPERATIONAL CHECKS
15.1 Zero and Span Settings - If the required zero and span corrections performed in
accordance with clause 14.2 are greater than 80% of the range, have the
analyser serviced.
15.2 Sample Flow Rate - If the sample flow rate has changed by more than + 20% of
the initial value, check the particulate filter for blockage, and the sample pump for
proper operation. Check the filter monthly by measuring the flow rate with and
without the filter in place. Replace the filter if the drop is more than 5%.
15.3 Temperature Control - Check the temperature of the shelter or room in which
the analyser is located. If, it has changed by more than + 5 o C, have the heatingcooling
system serviced.
15.4 Analog Recording System - Check the strip chart recorder for the following :
(a) Chart speed setting
(b) Gain control setting
(c) Ink supply
(d) Paper supply
(e) Excessive noise
(f) Proper operation of analyser
(g) Time-mark, sign and date the record
15.5 Digital Recorder - Perform the checks in accordance with the manufacturer's
instructions.
16.0 REFERENCES
1. Dechant, R.F. and Mueller, P.K., "Performance of Continuous NDIR Carbon
Monoxide Analyser", Report No. 57, Air and Industrial Hygiene Laboratory,
Department of Public Health, Berkeley, CA, USA, June 1969.
2. Jacobs, M.B., Braverman, M.M. and Hochheiser, S., "Continuous Determination
of Carbon Monoxide and Hydrocarbons in Air by a Modified Infrared
Spectrometer", J. Air Pollution Control Assoc., 9, 1959, pp. 110-114.
3. Moore, M.A., "Critical Evaluation of the Analysis of Carbon Monoxide with
Nondispersive Infrared, NDIR", presented at the Ninth Conference on Methods in
Air Pollution and Industrial Hygiene Studies, Passadena, CA, USA, Feb. 7-9,
1968.
4. McKee, H.C. and Childers, R.E., "Collaborative Study of Reference Method for
the Continuous Measurement of Carbon Monoxide in the Atmosphere
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