40 C.F.R. § 53 app Table B-5 to Subpart B of Part 53

Current through November 30, 2024

Appendix Table B-5 to Subpart B of Part 53 - Symbols and Abbreviations

B_L -Analyzer reading at the specified LDL test concentration for the LDL test.

B_Z -analyzer reading at 0 concentration for the LDL test.

DM -Digital meter.

C_max -Maximum analyzer reading during the 12 ZD test period.

C_min -Minimum analyzer reading during the 12 ZD test period.

i -Subscript indicating the i -th quantity in a series.

IE -Interference equivalent.

L₁ -First analyzer zero reading for the 24 ZD test.

L₂ -Second analyzer zero reading for the 24 ZD test.

n -Subscript indicating the test day number.

P -Analyzer reading for the span drift and precision tests.

P_i -The i -th analyzer reading for the span drift and precision tests.

P₂₀ -Precision at 20 percent of URL.

P₈₀ -Precision at 80 percent of URL.

ppb-Parts per billion of pollutant gas (usually in air), by volume.

ppm-Parts per million of pollutant gas (usually in air), by volume.

R -Analyzer reading of pollutant alone for the IE test.

R₁ -Analyzer reading with interferent added for the IE test.

r_i -the i -th analyzer or DM reading for the noise test.

S -Standard deviation of the noise test readings.

S₀ -Noise value ( S ) measured at 0 concentration.

S₈₀ -Noise value ( S ) measured at 80 percent of the URL.

S_n -Average of P₇ . . . P₁₂ for the n-th test day of the SD test.

S'_n -Adjusted span reading on the n -th test day.

SD-Span drift

URL -Upper range limit of the analyzer's measurement range.

Z -Average of L₁ and L₂ readings for the 24ZD test.

Z_n -Average of L₁ and L₂ readings on the n -th test day for the 24ZD test.

Z'_n -Adjusted analyzer zero reading on the n -the test day for the 24ZD test.

ZD -Zero drift.

12 ZD -12-hour zero drift.

24 ZD -24-hour zero drift.

40C.F.R. 53 app Table B-5 to Subpart B of Part 53