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
Summary of Contents for ERZ2000-NG
Page 10: ......
Page 68: ...2 Introduction Manual ERZ 2000 NG EN07 2019 May 13th 58 Figure 44 Menu LA Overview...
Page 69: ...2 Introduction Manual ERZ 2000 NG EN07 2019 May 13th 59 Figure 45 Menu LB Totalizer BM1...
Page 77: ...2 Introduction Manual ERZ 2000 NG EN07 2019 May 13th 67 Figure 51 Overview System sub menu...
Page 241: ...6 Flow meters Manual ERZ 2000 NG EN07 2019 May 13th 231 Figure 167 Interface module C34...
Page 340: ...8 Overview Coordinates Manual ERZ 2000 NG EN07 2019 May 13th 330 8 5 6 TSV export...
Page 453: ...Certificates Manual ERZ 2000 NG EN07 2019 May 13th 443...