Endress+Hauser Proline Promag 51, Руководство по эксплуатации

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Proline Promag 51 9 Trouble-shooting
Hauser 91
9.4 Process errors without messages
Symptoms Rectification
Remarks:
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, for example, are described in detail in the “Description of
Device Functions” manual.
"
Caution!
For certified instruments, faults can only be corrected by breaking the seal. After repair by an Hauser service
technician (provisional seal), the device must be resealed by the appropriate standards authority.
Flow values are negative, even
though the fluid is flowing
forwards through the pipe. 1. Remote version:
– Switch off the power supply and check the wiring
→
Page 39 ff.
– If necessary, reverse the connections at terminals 41 and 42
2. Change the setting in the “INSTALLATION DIRECTION SENSOR” function
accordingly
Measured value reading fluctu-
ates even though flow is steady. 1. Check grounding and potential equalization
→
Page 47 ff.
2. Check the fluid for presence of gas bubbles.
3. In the “TIME CONSTANT” function (current output)
→
increase the value
4. In the “DISPLAY DAMPING” function
→
increase the value
Measured value reading shown
on display, even though the fluid
is at a standstill and the measur-
ing tube is full. 1. Check grounding and potential equalization
→
Page 47 ff.
2. Check the fluid for presence of gas bubbles.
3. Activate the “LOW FLOW CUTOFF” function, i.e. enter or increase the value
for the switching point (not possible in
custody transfer mode ).
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
→
Page 77
2. Remote version: Check the terminals of the EPD cable
→
Page 39 ff.
3. Fill the measuring tube.
The current output signal is
always 4 mA, irrespective of the
flow signal at any given time. 1. Select the “BUS ADDRESS” function and change the setting to “0”.
2. Value for creepage too high. Reduce corresponding value in the “Low flow cut-
off” functions (not possible in
custody transfer mode ).
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 (Page 11 ff.): order code, serial number
Returning devices to Hauser
The procedures on Page 8 must be carried out before you return a flowmeter
requiring repair or calibration to Hauser.
Always enclose a duly completed “Declaration of Conformity” form with the
flowmeter. You will find a preprinted form at the back of this manual.
Replace transmitter electronics
Components in the measuring electronics defective
→
order spare parts
→
Page 94