Percent Of Proportional Sampling Rate (Pr) - United States Stove Company 7700 Manual

A-9 Percent of proportional sampling rate (PR)
Equation used
Nomenclature
PR Percent of proportional sampling rate (%)
Total sampling time, min
θ
Time of interval, 10 min
θ
i
V Volume of gas sample measured by the digital mass flow controller, dsm
m
V Volume of gas sample measured by the digital mass flow controller during the i
mi(std)
minutes interval, dsm
V Average gas velocity in the dilution tunnel, ft/min
S
V Average gas velocity in the dilution tunnel during the i
Si
T Absolute average digital mass flow controller temperature, K (R)
m
T Absolute average digital mass flow controller temperature during the i
mi
interval, K (R)
T Absolute average gas temperature in the dilution tunnel, K (R)
S
T Absolute average gas temperature in the dilution tunnel during the i
Si
interval, K (R)
Sample calculation
i = 1
3
(dscf)
3
(dscf)
th
10 minutes interval, ft/min
th
10 minutes
th
10 minutes
th
10