
6 Flow meters
Manual ERZ 2000-NG · EN07 · 2019, May 13th
188
Note
It is not possible to operate two independent volume measurements with
two volume transmitters.
Available for selection in GB16:
LF1-ch.
Single-channel operation with LF input
only counting, no flow rate,
there is no lower shut-off limit (leak flow volume)
HF1-ch.
Single -channel operation with HF input
HF2-ch. 1/1
Two-channel operation with HF inputs
Same significance. The input pulses are applied with shifted
phase. The difference formation compares the alternating
measurement and comparison pulse. Any deviation is
counted in the pulse disturbance counter. An alarm is gen-
erated if the adjusted limit value is exceeded (
GB18 Miss-
ing pulses
= e.g. 10 pulses). If the limit value is not ex-
ceeded within an adjustable period (
GB19 Reference puls-
es
= e.g. 10000 pulses), the pulse disturbance totalizer is
set to zero. The Vm progress and flow rate are calculated
from the "better" HF input.
HF2-ch. X/Y
Two-channel operation with HF inputs
Different significance. The difference formation and compar-
ison take place in the software only. An alarm is generated
in case of a deviation. The Vm progress and flow rate are
calculated from the "better" HF input.
HF LF
Two-channel operation with HF input (measuring channel)
and LF input (comparison channel)
The difference formation and comparison take place in the
software only. An alarm is generated in case of a deviation.
With a changeover to the comparison channel (e.g. in case
of an error, only a flow rate with reduced accuracy can be
calculated.
Vo
Vm is calculated from Vo, ENCO counter delivers data via
protocol
Vo, LF1-ch.
Vm is calculated from Vo, LF input is used for comparison
Vo, HF1-ch.
Vm is calculated from Vo, HF input is used for comparison.
An alarm is triggered in case of synchronization errors.
Vo, HF2-ch. 1/1
Vm is calculated from Vo,
The HF inputs are used for comparison and for checking for
synchronization and calculation of the flow rate (selection 1
Содержание ERZ2000-NG
Страница 10: ......
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...