RMG TME400-VMF - Measuring Ranges; Measuring Accuracy

1 Introduction
Manual TME400-VMF · EN02 · 2018 September 6th
30
1.4.2.8.
Measuring ranges
Type TME400 turbine meters have measuring ranges of at least 1:20 at atmospheric
pressure (see chapter 1.4.2.9 Measuring accuracy). At a higher pressure, the meas-
uring range can be expanded to 1:50. The measuring ranges are between 2.5 and
25,000 m3/h (operating conditions), depending on meter size.
1.4.2.9.
Measuring accuracy
The following error limits apply within the permissible measuring range:
Measurement deviation in the range of
DN
Qmin
[m³/h]
Qmax
[m³/h]
MR
Qmin-0,2 x Qmax
[%]
0,2 x Qmax-Qmax
[%]
25
2.5
25
1:10
3
2
40
6
70
1:12
3
1.5
80
13
160
1:12
3
1.0
50
6
100
1:16
3
1.5
80
16
250
1:16
3
1.0
25
400
1:16
3
1.0
100
25
400
1:16
2
1.0
40
650
1:16
2
1.0
80
13
250
1:20
3
1.5
20
400
1:20
3
1.5
100
20
400
1:20
3
1.5
32
650
1:20
3
1.5
Note
With a slightly smaller measuring range of 1:16, turbine meters are also
available in nominal diameters DN 80 and DN 100, which have an increased
accuracy with a deviation of max. ±1% in the range of 0.2 x Q
max
-Q
max
.
150
32
650
1:20
2
1
50
1000
1:20
2
1
80
1600
1:20
2
1
200
80
1600
1:20
2
1
125
2500
1:20
2
1
250
125
2500
1:20
2
1