1 Introduction
MANUAL TME400-VCF · EN04 · 2019 March 26th
33
200
4000
1:20
2
1
300
200
4000
1:20
2
1
325
6500
1:20
2
1
400
325
6500
1:20
2
1
500
10000
1:20
2
1
500
500
10000
1:20
2
1
800
16000
1:20
2
1
600
800
16000
1:20
2
1
1250
25000
1:20
2
1
1.4.2.10.
Pressure loss
The measuring points for determining pressure loss are 1 x DN upstream and down-
stream of the meter. The pressure loss is calculated according to the following for-
mula:
4
2
m
p
DN
Q
Z
p
=
where:
p pressure loss
[mbar]
Z
p
coefficient of pressure loss
[-]
operating density
[kg/m³]
Q
m
volume flow at measurement conditions
[m³/h]
DN nominal meter diameter
[mm]
Device type
Z
p
Turbine meter TME400
5040
Perforated plate straightener L1 according to ISO/DIN
3150
Perforate plate straightener L2 according to ISO/DIN
6300
Perforated plate straightener L3 according to ISO/DIN
9450
Perforated plate straightener LP-35 RMG standard
1260
Bend straightener RB 19 according to ISO/DIN
1260
The values for Z
p
are rough averages. The exact value is calculated from the pres-
sure loss, which is determined when testing the meter.
Summary of Contents for TME400-VC
Page 6: ......
Page 47: ...2 Installation MANUAL TME400 VCF EN04 2019 March 26th 41 Ex version...
Page 48: ...2 Installation MANUAL TME400 VCF EN04 2019 March 26th 42 Ex version with current module...
Page 49: ...2 Installation MANUAL TME400 VCF EN04 2019 March 26th 43 Non Ex version...
