Proline Promag 55 FOUNDATION Fieldbus
Troubleshooting
Hauser
91
9.3
Process errors without a message
Symptoms
Rectification
!
Note!
You may have to change or correct certain settings in functions in the function matrix in order to rectify the fault. The functions outlined below, such as DISPLAY
DAMPING, are described in detail in the "Description of Device Functions" manual.
Flow values are negative, even though
the fluid is flowing forwards through
the pipe.
Change the sign of the flow rate variable.
1.
FF: "Flow" Transducer Block (base index: 1400)
→
"Sys. – Install.Direction Sensor" parameter
2.
Local display: HOME
→
BASIC FUNCTION
→
SYSTEM PARAMETER
→
CONFIGURATION
→
INSTALLATION DIRECTION SENSOR
Measured value reading fluctuates even
though flow is steady.
1.
Check grounding and potential equalization
2.
The medium is too inhomogeneous. Check the following medium characteristics:
– Gas bubble percentage too high?
– Solids percentage too high?
– Conductivity fluctuations too high?
3.
Increase the value for system damping:
– FF: Analog Input function block
→
PV_FTIME parameter
– FF: "Flow" Transducer Block (base index: 1400)
→
"Sys. – Flow Damping" parameter
– Local display: HOME
→
BASIC FUNCTION
→
SYSTEM PARAMETER
→
CONFIGURATION
→
SYSTEM DAMPING
4.
Increase the value for display damping:
– FF: "Display" Transducer Block (base index: 1800)
→
"Config. – Display Damping" parameter
– Local display: HOME
→
USER INTERFACE
→
CONTROL
→
BASIC CONFIG.
→
DISPLAY DAMPING
Measured-value reading or measured-
value output pulsates or fluctuates, e.g.
because of reciprocating pump,
peristaltic pump, diaphragm pump or
pump with similar delivery
characteristic.
1.
Increase the value for system damping:
– FF: Analog Input function block
→
PV_FTIME parameter
– FF: "Flow" Transducer Block (base index: 1400)
→
"Sys. – Flow Damping" parameter
– Local display: HOME
→
BASIC FUNCTION
→
SYSTEM PARAMETER
→
CONFIGURATION
→
SYSTEM DAMPING
2.
Increase the value for display damping:
– FF: "Display" Transducer Block (base index: 1800)
→
"Config. – Display Damping" parameter
– Local display: HOME
→
USER INTERFACE
→
CONTROL
→
BASIC CONFIG.
→
DISPLAY DAMPING
Measured value reading shown on
display, even though the fluid is at a
standstill and the measuring tube is
full?
1.
Check grounding and potential equalization
2.
Check the fluid for presence of gas bubbles.
3.
Enter or increase the value (>0) for the switching point of low flow cutoff:
– FF: "Flow" Transducer Block (base index: 1400)
→
"Low Flow Cut Off – On Value" parameter
– Local display: HOME
→
BASIC FUNCTION
→
PROCESS PARAMETER
→
CONFIGURATION
→
ON VALUE LF CUT OFF
Measured-value reading on display,
even though measuring tube is empty.
1.
Perform empty pipe/full pipe adjustment and then switch on empty pipe detection
2.
Fill the measuring tube.
The fault cannot be rectified or some
other fault not described above has
arisen.
In these instances, please contact your
Hauser service organization.
The following options are available for tackling problems of this nature:
•
Request the services of an Hauser service technician
If you contact our service organization to have a service technician sent out, please be ready to quote the following
information:
– Brief description of the fault
– Nameplate specifications: order code and serial number
•
Returning devices to Hauser
The necessary procedures must be carried out before you return a flowmeter requiring repair or calibration to
Hauser
98.
Always enclose a duly completed "Declaration of Contamination" form with the flowmeter. You will find a preprinted
"Declaration of Contamination" form at the back of this manual.
•
Replace transmitter electronics
Components in the measuring electronics defective
→
Order spare parts
