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1.3
Recommended sample flow rate
Use the smallest acceptable flow rate for the process gas passing through the meter. This
ensures a sample gas flow rate that is representative of the main flow with regard to the
proportions of different gas constituents.
Micro Motion recommends a gas flow rate of 5 ±1 l/hr (0.176 ±0.35 ft
rate between 1 to 10 l/hr (0.035 to 0.35 ft
At flow rates greater than 10 l/hr (0.35 ft
unstable and may introduce a small density error. For natural gas with a typical application
density of approximately 0.06 g/cm
1.66 mbar (0.67 in WC) is required to maintain a flow rate of 5 l/hr (0.176 ft
Figure 1-1:
Installation Manual
3
Pressure drop through the meter
Volume of gas in meter = 40 cm
3.5
3
Recommended
2.5
operating
2
flow rate
1.5
1
.5
0
0
2
Volume of gas in meter = 2.44 in
1.2
Recommended
1.0
operating
flow rate
.8
.6
.4
.2
0
0
0.05
0.1
3
/hr) is acceptable.
3
/hr), the density reading can become slightly
3
(60 kg/m
), a pressure differential of approximately
4
6
Flowrate (lt/hr)
0.15
0.2
3
Flowrate (ft
/hr)
Planning
3
/hr), although a flow
3
/hr) .
3
8
10
3
0.25
0.3
0.35
3
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