The document outlines calibration frequencies for parts in a high-volume sampler and stack monitoring kit. For the high-volume sampler, the blower, rotameter, and time totalizer should be calibrated once every six months or when replaced. For the stack monitoring kit, the pitot tube, rotameters, pyrometer, stop watch, pressure gauge, thermometer should be calibrated after every 10-15 uses to ensure accurate flow and concentration measurements. If the parts are not properly calibrated, the measured flow and concentration results will not be correct.

1. Frequency of Calibration
1 HIGH - VOLUME SAMPLER
Parts Calibration Frequency
Blower By orifice calibrator Once in six months or
whenever . the blower is
replaced or reminded
Rotameter By soap bubble method Once in six months
Time Totalizer By calibrated clock Once in six months.
STACK MONITORING KIT
Pitot Tube Against STD. Pitot tube
with the help of wind tunnel
After every 10-15
monitoring
Rotameter ( Particulate ) (1) By STD. Rotameter
(2) Water Displacement
o y b i o i 11
(3) Calibrated dry gas
meter
After every 10-15
monitoring
Rotameter ( Gases ) By soap bubble method After every 10-15
monitoring
Pyrometer By Calibrated Pyrometer &
thermocouple
After every 10-15
Monitoring
Stop Watch
i
By Calibrated Clock After every 10-15
Monitoring
I Pressure Gauge By Calibrated Gauge After every 10-15
Monitoring
| Thermometer
|
By Calibrated thermometer After every 10-15
Monitoring
If the parts are not calibrated then the flow measured will not be correct and
subsequently the measured concentration will not be actual representative
concentrations.
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