Parameterization
88 FSM4000 D184B140U02
7.4 Additional information regarding use of enhanced diagnostic functions
Additional diagnostic functions are available for flowmeters sensor SE41F, SE21 and SE21F
are available for meter sizes DN 8 and larger. The following section describes how to determine
individual values.
7.4.1 Determining measurement values for diagnostics
7.4.1.1 Determining the coil alternating current or coil alternating voltage
I
?
U ?
G00578a
For detecting changes in the coil circuit.
The current and voltage are measured directly. These do not
influence the flow measurements.
To perform the measurement, it is necessary to switch on one
of the relevant errors or warnings in the submenu
"Diagnostics/Alarm Settings" (see page 80).
7.4.1.2 Determining the coil DC resistance
I-
U-
G00578b
For monitoring changes in the coil circuit, e.g., fine short of coil.
When measuring the coil DC resistance, a DC field excitation of
approx. 1 sec is used as a test signal. Because the incoming
test signal prevents flow measurement, the most recent value is
retained.
To perform this test, it is necessary to switch on one of the
relevant errors or warnings in the submenu "Diagnostics/Alarm
Settings" (see page 80).
Coil
R =
Coil
Coil
I
U
Important
To ensure information is displayed properly, the cable length must be entered in the submenu
"Dia
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