RMG ERZ2000-NG, Operating Manual

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6 Flow meters
Manual ERZ 2000-NG · EN07 · 2019, May 13th
189
and 3). With synchronization errors, a warning message is
triggered and a switchover to the plausible input takes place.
Vo, HF2-ch. X/Y Vm is calculated from Vo, HF inputs are used for compari-
son, checking for synchronization and calculation of the flow
rate (selection 1 of 3). With synchronization errors, an alarm
is triggered and a switchover to the plausible input takes
place.
LF1-ch., Vo Vm is calculated from the input signal, Vo is only used for
comparison and the check for synchronization and, other-
wise, is only displayed and registered. An alarm is triggered
in case of synchronization errors, then no changeover to Vo
takes place. A flow rate with reduced accuracy is deter-
mined from the LF signal.
HF1-ch., Vo Vm is calculated from the input signal, Vo is used for com-
parison only. An alarm is triggered in case of synchroniza-
tion errors.
HF2-ch. 1/1, Vo Vm is calculated from the input signal, Vo is used for com-
parison and the check for synchronization (selection 1 of 3)
and, otherwise, is only displayed and registered. An alarm is
triggered in case of synchronization errors, then no change-
over to Vo takes place.
HF2-ch. X/Y, Vo Vm is calculated from the input signal, Vo is used for com-
parison and the check for synchronization (selection 1 of 3)
and, otherwise, is only displayed and registered. An alarm is
triggered in case of synchronization errors, then no change-
over to Vo takes place.
USZ Vm is delivered via DZU protocol.
Connection of an ultrasonic gas meter (USZ08 or USM-
GT400) with main totalizer function, transmission of totalizer
statuses and flow rates with the DZU protocol. Information
about the protocol is available in menu
LO DZU Protocol
IGM Activate integrated ultrasonic controller
Sensor data is delivered from the ultrasonic measuring head
Orifice plate An orifice plate is used for volume calculation (for ERZ2014,
ERZ2114, ERZ2012, ERZ2112)
Delta-p transducers are connected, wherein up to 3 stepped
transducers can be accommodated. In the process, monitor-
ing of the overlapping ranges takes place during run-up and
after-run.
4-20mA Processing of an analog signal proportional to the flow rate.
A current input must be selected as source with
AQ 4-20mA
flow . The assignment takes place:
4 mA = 0 m³/h, 20 mA = Qb,max ( GB06
)
.
sim. turbine freq. If no real volume transmitter is available, a turbine can be