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MAS Instruction Manual
Page 42
where:
F
m
m
m
m
T
T
1
1
1
2
2
=
(
)
(
)
=
(
) (
)
˙
/ ˙
˙
/ ˙
.
and
F
2
ρ
ρ
ρ
ρ
The equivalent value of N is:
N
m
m
N
m
m
N
T
T
=
(
)
+
(
)
˙ / ˙
˙
/ ˙
1
1
2
2
The equivalency relationships for r, 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:
IMPORTANT NOTE ABOUT K-FACTORS:
IMPORTANT NOTE ABOUT K-FACTORS:
IMPORTANT NOTE ABOUT K-FACTORS:
IMPORTANT NOTE ABOUT K-FACTORS:
Please note that if you have a mass flowmeter calibrated for a gas
such as methane and wish to use the K-factors to measure a gas
such as air, that 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 better than
±
5 to 10% accuracies.
It should also be noted that certain gases, in similar “families,” will
work exceptionally well with K-factors; however, those instances
are only true when similar thermal properties of the gas are
present.
Summary of Contents for MAS Series
Page 27: ...MAS Instruction Manual Page 26 APPENDIX A Exploded View of MAS Transducers and Parts Lists...
Page 28: ...MAS Instruction Manual Page 27 Aluminum Assembly High Flow MAS 1100 2100 M82 0022...
Page 30: ...MAS Instruction Manual Page 29 MAS Assembly MAS 1000 2000 M82 0023...
Page 32: ...MAS Instruction Manual Page 31 Electronics Enclosure Sub Assembly MAS M82 0019 XXXX B...
Page 34: ...MAS Instruction Manual Page 33 Sensor Compartment Assembly MAS M82 0020 X B...
Page 47: ...MAS Instruction Manual Page 46...
Page 54: ...MAS Instruction Manual Page 54...