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SIGMA Manual Number 41018
Revision AR
The percent variation of mean flow rate accuracy over a specific observation period may be quanti-
fied with the use of a trumpet graph. Using the rationale for development of a statistical trumpet
graph as defined in IEC 60601-2-24, a presentation of the SIGMA Spectrum mean flow over a spe-
cific measurement interval is provided.
Startup Graph, First Two Hours
Set Rate 25 mL/hr
F
lo
w
R
a
te
(
m
L
/h
r
)
Q
i
Time (min)