Toshiba LF410/LF600, LF410/LF602 Meter Size, To select the meter size, Calibration Range

LF410/LF600 LF410/LF602

Meter Size

To select the meter size:

See Figure 13 and find meter sizes within the velocity of 0.1 to 10m/s for a specified full-scale (measuring range high limit) flow. Select one that has its full-scale velocity between 1 and 3m/s.

Note: Make sure the full-scale flow rate used for the final planning stage stays within 10m/s in terms of flow velocity.

Flow velocity (m/s)

Flow rate (m3/h)

For SI unit			Unit: m3/h
Meter size		Flow rate
(mm)	0.3 m/s	1 m/s	10 m/s
15	0.1908	0.6361	6.361
25	0.5301	1.767	17.67
40	1.357	4.523	45.23
50	2.120	7.067	70.67
80	5.428	18.09	180.9
100	8.482	28.27	282.7
150	19.08	63.61	636.1
200	33.93	113.1	1131
For English unit			Unit: gal/min
Meter size		Flow rate
(inch)	0.98ft/s	3.28ft/s	32.8ft/s
1/2	0.8401	2.801	28.01
1	2.334	7.780	77.80
1 1/2	5.975	19.91	199.1
2	9.334	31.12	311.2
3	23.90	79.65	796.5
4	37.35	124.5	1,245
6	84.01	280.1	2,801
8	149.4	498.0	4,980

Figure 13. Flow Rate and Flow Velocity

Calibration Range

If the calibration range is not specified, the standard range as shown below will be used. If the range is specified, we will use the specified range for calibration.

Table 1. Standard Flow Range
Meter size	Standard flow range
mm (inch)	Flow rate	Flow velocity	Flow rate
	(m³/h)	(m/s)	(gal/min)
15 (1/2)
	2	3.144	25
25 (1)	6	3.395	75
40 (1 1/2)	15	3.316	175
50 (2)	25	3.537	300
80 (3)	60	3.316	650
100 (4)	100	3.537	1,000
150 (6)	200	3.144	2,500
200 (8)	300	2.653	4,500

Note: The unit of "gal/min" is not exchanged (converted) by "m3/h".

PED matrix in each flange connection.

The following sizes fall under the category for PED in each flange connection when the meter ships to EU. All of them had complied with it from a notified body.

Table 2 PED matrix in each flange connection

Flange standard	Meter size
DIN PN 16 and BS 16	150 to 400mm
	(6 to 16 inch)
DIN PN 10 and BS 10	250 to 400mm
	(10 to 16 inch)
ANSI 150 and JIS10K	6 to 16 inch
	(150 to 400mm)

12