Universal Flow Computer UR06
Operating Manual
Page 36 of 55
Subject to changes
A-EN-08728-URRev.B
Bopp & Reuther
Messtechnik GmbH
17.6 Primary transmitter / Secondary transmitter
The secondary transmitter basically has the same menu items as the primary transmitter. Only the
parameters “leak flow mode”, “calibration threshold”, “residence time”, “total pulses”, “error pulses” and
“min measuring period” are used for both the primary and the secondary transmitter.
17.6.1 Transmitter selection
Selection of the volume / mass transmitter.
Selection:
Orifice dp 0/4-20mA
Volume pulse
Vol. Dual pulse
Volume 0/4-20mA
Mass pulse
Mass dual pulse
Mass 0/4-20mA
17.6.2 Input
Electrical assignment of the transmitter to the input. If an orifice is selected as the transmitter,
assignment takes place via the differential pressure input. Select a current input for volume / mass
transmitters with current signal (I1 ... I4), a digital input for transmitters with a pulse (DI1 ... DI2) and a
double pulse input for transmitters with a dual pulse (DI1/2).
Range:
I1, I2, I3, I4, DI1, DI2, DI1/2
17.6.3 Nominal flow
The nominal flow determines the measuring range (maximum value) of the connected volume / mass
transmitter. It is the 100% point for calculating the leak flow shut-off and flow-dependent linearization.
If the transmitter is a volume transmitter, the unit is m3/h. If the transmitter is a mass transmitter or an
orifice, the unit is kg/h.
Range:
0.001 m3/h ... 1e9 m3/h (or kg/h)
17.6.4 Pipe diameter
Internal diameter of the supply pipe. The input of the correct diameter is required for orifices. With
other volume transmitters, the pipe diameter is only used to calculate the Reynolds number. (Input of
the pipe diameter is also required if linearization via Reynolds number is selected.)
Range:
10 ... 1,500 mm
17.6.5 Leak flow
Set the leak flow shut-off in % of the nominal flow rate. The flow rate and the resulting parameters are
set to 0 below the leak flow. Depending on the “leak flow mode” settings, volumes are, if necessary,
added up. Leak flow operation is activated when the flow rate is below the set percentage of the
nominal flow rate (e.g. 3.0%); it is deactivated when the flow rate is at least 1.2 times the set
percentage of the nominal flow rate (e.g. 3.6%).
Range:
0.1 ... 10%
17.6.6 Place of installation
In energy mode, the volume / mass transmitters can be installed in the supply and return. In flow meter
mode (no energy), “Warm” is automatically set as the place of installation.
Selection: Cold,
Warm
17.6.7 Event counters
Additional counters (event counters) which are activated in the case of an event – error, threshold,
control signal. Threshold dependent switching occurs via threshold 2 and threshold 3 for the primary
transmitter and the secondary transmitter respectively.
Selection:
Without
Saturated steam
D2 inv.
Error
Sum/Sat. steam
Threshold 2 (3)
Sum/Error
D2
Threshold 2 (3) inv.
