Toshiba LF414 - Manual (Page 47)

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Flow and calibration velocity range:
It calibration by standard Range shown in the table below when Range is not specified.
It calibration when there is specification by flowing quantity Range in which the customer is
specified. Is this specification Range flowing quantity of Figure 9.1. Please confirm becoming
in the upper bound value from the flow velocity chart.
Standard Flow rate Meter size
(mm) Volume (m
3
/h) Velocity (m/s)
15 2 3.144
25 6 3.395
40 15 3.316
50 25 3.537
80 60 3.316
100 100 3.537
150 200 3.144
200 300 2.653
To select the meter size: See Figure 9.2 and find meter sizes within the velocity of 0.1 to 10 m/s for a specified
full-scale (measuring range high limit) flow. Select one that has its full-scale velocity
between 1 and 3 m/s.
Make sure the full-scale flow rate used for the final planning stage stays
within 10 m/s in terms of flow velocity.
流
速
〔m/s〕
10 15 25 40 50 80 150 mm
10 4 10 3 10 2 10 1 1 10 -1
0.1
0.3
1
流量〔m 3 /h〕
10 -2
100
200
Figure 9.2 Flow velocity vs. flow volume
Flow velocity range Flow volume
Meter size 0.1m/s 0.3m/s 1m/s 10m/s
15mm 0.0631m
3
/h 0.1908m
3
/h 0.6361m
3
/h 6.361m
3
/h
25mm 0.1767m
3
/h 0.5301m
3
/h 1.767m
3
/h 17.67m
3
/h
40mm 0.4523m
3
/h 1.357m
3
/h 4.523m
3
/h 45.23m
3
/h
50mm 0.7067m
3
/h 2.120m
3
/h 7.067m
3
/h 70.67m
3
/h
80mm 1.809m
3
/h 5.428m
3
/h 18.09m
3
/h 180.9m
3
/h
100mm 2.827m
3
/h 8.482m
3
/h 28.27m
3
/h 282.7m
3
/h
150mm 6.361m
3
/h 19.08m
3
/h 63.61m
3
/h 636.1m
3
/h
200mm 11.31m
3
/h 33.93m
3
/h 113.1m
3
/h 1131m
3
/h
Flow volume (m
3
/h)
Flow velocit
y
(
m/s
)
SI Unit