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OIE 12en Edition 2019-02
Operating Instructions
Menu 4: K-factors Volumeter A
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3.19 Address Modbus
The transfer of data by means of the Modbus is
possible via the serial interface. The address can
be set here.
Note:
Data exchange via the bus connection is
not password-protected! Write access deletes
existing values. Therefore we only recommend
reading of the data.
Menu 4: K-factors Volumeter A
The K-factors of Volumeter A are entered in
menu 4 "K-factors Volumeter A" with rising
frequency. This maps the linearization
characteristic of Volumeter A.
Examples:
Note:
The number of linearization points is
limited by the input of the frequency "0". Ensure
that the K-factor and frequency of Q
rated
are
entered respectively on the preceding page.
The linearization is extended to "0" or to
∞
Hz via
the first or last two linearization points resp. and
mirrored into negative values.
The K-factors and the corresponding frequencies
are located on the calibration certificate of the
volumeter. The resulting K-factor is listed
additionally on the rating plate of the volumeter.
4.01 Volumeter A Point 1
4.02 Volumeter A Point 2
The pages of the K-factors Volumeter A, Point 3
to 7 are displayed consecutively by repeated
pressing of the key ARROW UP.
Menu 5: K-factors Volumeter B
The K-factors of Volumeter B are entered in
menu 5 "K-factors Volumeter B" with rising
frequency. This maps the linearization
characteristic of Volumeter B.
The K-factors and frequencies are entered
analog to menu 4.
5.01 Volumeter B Point 1
The pages of the K-factors Volumeter B, Point 2
to 7 are displayed consecutively by repeated
pressing of the key ARROW UP.
Menu 6: Density table 1/Density
determination
Up to 10 temperature and density values of a
density table can be entered in ascending order
in menu 6 "Density table 1". This allows a
temperature compensation and the mass
calculation of the flow rate values. The density
table can be requested from the supplier of the
fluid.
Linearization
Input
None
□
Page 4.01: Resulting K-
factor and frequency at
Q
rated
□
Page 4.02: Frequency "0"
Linearization
with 2 points
□
Page 4.01: Any K-factor
and associated frequency
□
Page 4.02: K-factor and
frequency at Q
rated
□
Page 4.03: Frequency "0"
Linearization
with 3 points
□
Page 4.01: Any K-factor
and associated frequency
□
Page 4.02: K-factor and
associated frequency in
ascending order
□
Page 4.03: K-factor and
frequency at Q
rated
□
Page 4.04: Frequency "0"
3.19 Setting
Address
Modbus:
1
4.01 K-factor
Volumeter A Point 1
f: 15,68 Hz
K: 470,52 P/l
4.02 K-factor
Volumeter A Point 2
f: 30,73 Hz
K: 471,58 P/l
5.01 K-factor
Volumeter B Point 1
f: 76,82 Hz
K: 471,85 P/l
