Endress+Hauser HART Proline Promass 83, Руководство по эксплуатации

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Troubleshooting Proline Promass 83
94 Hauser
474 P: MAX. FLOW
!: # 474 S Maximum flow value entered is
overshot. Reduce the flow value.
!
Note!
Please observe Note in error message No. 471
No. # 7xx
→
Other process errors)
700 P: EMPTY PIPE
!: # 700 S
1)
The process fluid density is outside the
upper or lower limit values set in the
EPD function
Causes:
– Air in the measuring tube
– Partly filled measuring tube
1. Ensure that there is no gas content in the process
liquid.
2. Adapt the values in the EPD function to the
current process conditions.
701 P: EXC. CURR. LIM
!: # 701 S
1)
The maximum current value for the
measuring tube exciter coils has been
reached, since certain process fluid
characteristics are extreme, e.g. high
gas or solid content.
The instrument continues to work
correctly. In particular with outgassing fluids and/or increased
gas content, the following measures are
recommended to increase system pressure:
1. Install the instrument at the outlet side of a pump.
2. Install the instrument at the lowest point of an
ascending pipeline.
3. Install a flow restriction, e.g. reducer or orifice
plate, downstream from the instrument.
702 P: FLUID INHOM.
!: # 702 S
1)
Frequency control is not stable, due to
inhomogeneous process fluid, e.g. gas
or solid content.
703 P: NOISE LIM. CH0
!: # 703 S
1)
Overdriving of the internal analog to
digital converter.
Causes:
– Cavitation
– Extreme pressure pulses
– High gas flow velocity
A continuation of the measurement is
still possible!
Change or improve process conditions, e.g. by
reducing the flow velocity.
704 P: NOISE LIM. CH1
!: # 704 S
1)
705 P: FLOW LIMIT
$
: # 705
S
1)
The mass flow is too high. The
electronics' measuring range will be
exceeded. Reduce flow
731 P: ZERO-ADJ FAIL
!: # 731 M The zero point adjustment is not
possible or has been cancelled. Make sure that zero point adjustment is carried out at
"zero flow" only (v = 0 m/s)
→
79
1) Status signal ist changeable
No. Error message / Type Status signals
(from the
factory,
only HART 7)
Cause Remedy (spare part
→ 
97)