6 Flow meters
Manual ERZ 2000-NG · EN07 · 2019, May 13th
185
Like pressure and temperature, the data of the gas meter which is used must be
communicated to the computer and parameters such as type / manufacturer / serial
number, etc. must be entered in the chapter Meters / flow rate parameters. This data
will then appear automatically in the type plate display. Then, the essential physical
values for operation of a flow rate measurement device in menu
GB Flow rate pa-
rameters
. First, the measuring range Qb,min to Qb,max must be adjusted under Op-
erating conditions in coordinates
GB04
/
GB05
and
GB06
.
Note
Some measurement techniques for volume flow rate detection permit use of a
larger measuring range if the flow rate measurement takes place under higher
pressure.
This option can be selected in coordinate
GB03 High-pressure ext.
. Then,
–
with
high pressure
–
the minimum permissible volume flow can be decreased. Since the
density is correlated with the pressure, there are three setting options: "no", "via
pressure" and "via density".
Comment
The density of a gas is increasingly less frequently determined via a direct density
transmitter, so the third variant only applies in isolated cases.
The minimum permissible measurable volume flow must be entered in coordinates
GB04 Qb,min
and
GB05 Qb,min (HD)
. "Qb,min (HD)" includes the minimum flow
rate under high-pressure conditions.
Note
If you operate your flow rate meter under high-pressure conditions, inquire
with the manufacturer of the flow meter device whether your volume transmit-
ter offers an expanded flow rate measuring range.
The values in coordinates
GB07 Pe,min
and
GB08 Pe,max
describe the permissible
limits of the pressure range in which the measuring device should be operated. The
values in coordinates
GB09 Rho,min
and
GB10 Rho,max
describe the permissible
limits of the density range in which the measuring device should be operated.
Содержание ERZ2000-NG
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Страница 43: ...2 Introduction Manual ERZ 2000 NG EN07 2019 May 13th 33 Figure 17 Display of the ERZ2000 NG in the browser...
Страница 68: ...2 Introduction Manual ERZ 2000 NG EN07 2019 May 13th 58 Figure 44 Menu LA Overview...
Страница 69: ...2 Introduction Manual ERZ 2000 NG EN07 2019 May 13th 59 Figure 45 Menu LB Totalizer BM1...
Страница 77: ...2 Introduction Manual ERZ 2000 NG EN07 2019 May 13th 67 Figure 51 Overview System sub menu...
Страница 109: ...3 Electrical connections Manual ERZ 2000 NG EN07 2019 May 13th 99 Figure 81 Menu EH Module assembly...
Страница 111: ...3 Electrical connections Manual ERZ 2000 NG EN07 2019 May 13th 101 Figure 83 Menu EI Configuration...
Страница 241: ...6 Flow meters Manual ERZ 2000 NG EN07 2019 May 13th 231 Figure 167 Interface module C34...
Страница 261: ...6 Flow meters Manual ERZ 2000 NG EN07 2019 May 13th 251 6 5 2 AP diff pressure Figure 184 Menu AP differential pressure...
Страница 340: ...8 Overview Coordinates Manual ERZ 2000 NG EN07 2019 May 13th 330 8 5 6 TSV export...
Страница 345: ...9 Faults Manual ERZ 2000 NG EN07 2019 May 13th 335 9 1 2 JB Message register Figure 249 Menu JB Message register...
Страница 347: ...9 Faults Manual ERZ 2000 NG EN07 2019 May 13th 337 9 1 4 JD Debugging Figure 251 Menu JD Debugging...
Страница 448: ...Appendix Manual ERZ 2000 NG EN07 2019 May 13th 438 K 18 T Trend TA Trend block See chapter 2 5 8 Trend...
Страница 453: ...Certificates Manual ERZ 2000 NG EN07 2019 May 13th 443...