Appendix A
Series 810 Instruction Manual
The equivalency relationships for
p
, C
p
, and N for mixtures of
more than two gases have a form similar to the dual-gas
relationship given above.
IMPORTANT NOTE ABOUT K-FACTORS:
Please note that if you have a transducer calibrated for a gas such as
methane and wish to use the K-factors to measure a gas such as air,
the inaccuracy of the measurement can range from ±5 to 10%. The
use of K-factors is, at best, only a rough approximation and should
not be used in applications that require a better than ±5 to 10%
accuracy.
It should also be noted that certain gases, in similar “families,”
would work exceptionally well with K-factors; however, those
instances are only true when similar thermal properties of the gas are
present.
A-4
IM-81
