LEFM 3xxCi User Manual
IB1406 Rev 12
Section 2
Page 17
August 2017
•
By following the recommended installation practices detailed below, the LEFM 380Ci has been
approved by NMi (certificate number T10504 pipe sizes 6 inches to 42 inches).
•
The meter meets the performance requirements of OIML R137 Class 0.5 and ISO 17089 Class 1.
•
The accuracy specifications for the meter following calibration are as follows:
Linearized meter factor less than or equal to +/- 0.1% of measured value relative to calibration
facility (between Q
t
and Q
max
)
Linearized meter factor less than or equal to +/- 0.2% of measured value relative to calibration
facility (between Q
min
and Q
t
)
Table 2.2 Flow Ranges for the 3xxCi Meter
Pipe Size
In.
DN
Q
max
(cfh)
Q
overrange
(cfh)
Q
t
(cfh)
Q
min
(cfh)
Q
ma
x
(m
3
/hr)
Q
overrange
(m3/hr)
Q
t
(m3/hr)
Q
min
(m3/hr)
4
100
28,700
34,440
2,870
574
813
975
81
16
6
150
65,200
78,240
6,520
1,304
1,850
2,216
185
37
8
200
114,000
136,800
11,400
2,280
3,230
3,874
323
65
10
250
180,000
216,000
18,000
3,600
5,100
6,116
510
102
12
300
254,000
304,800
25,400
5,080
7,190
8,631
719
144
14
350
307,000
368,400
30,700
6,140
8,690
10,432
869
174
16
400
402,000
482,400
40,200
8,040
11,400
13,660
1,138
228
18
450
510,000
612,000
51,000
10,200
14,400
17,330
1,444
289
20
500
632,000
758,400
63,200
12,640
17,900
21,475
1,790
358
24
600
913,000
1,095,600
91,300
18,260
25,900
31,024
2,585
517
26
650
1,203,000
1,443,600
120,300
24,060
34,100
40,878
3,407
681
28
700
1,405,000
1,686,000
140,500
28,100
39,800
47,742
3,979
796
30
750
1,623,000
1,947,600
162,300
32,460
46,000
55,150
4,596
919
32
800
1,857,000
2,228,400
185,700
37,140
52,600
63,101
5,258
1,052
34
850
2,106,000
2,527,200
210,600
42,120
59,600
71,562
5,964
1,193
36
900
2,371,000
2,845,200
237,100
47,420
67,100
80,567
6,714
1,343
