Deltapilot SProvided a »dry« calibration was made or the sensor constants were entered before
calibration, it is not necessary to recalibrate the instrument when the electronic insert is
replaced. The measurement can be taken up again as soon as the new constants have
been entered in the matrix.
• If the old sensor constants were not entered, the system must be recalibrated.
The Deltapilot probe constants are dependent on the measuring points.
• f
o
is the zero frequency (offset)
•∆f is the sensitivity
For the Deltapilot, the zero frequency may also be read from V0H8 when the probe is
unpressurized. This value gives slightly better accuracy, since it accounts for the
orientation of the probe.
Procedure
Step Matrix Entry Significance
1 V3H5 e.g. 101 Enter zero frequency (offset)
2 - »E« Register entry
3 V3H6 e.g. 1.052 Enter sensitivity
4 - »E« Register entry
Liquiphant/SoliphantThere is no need for calibration when vibration sensors are replaced.
9.4 Repairs
Check the condition of the probes during regular maintenance inspections. If necessary,
free them of build-up. Remember that all probes are sensitive instruments and must be
treated accordingly.
Should the Silometer FMC 671 Z/676 Z transmitter or its probes need to be repaired by
Endress+Hauser, please send it to your nearest Service Centre with a note containing
the following information:
• An exact description of the application for which it was used.
• The physical and chemical properties of the product measured.
• A short description of the fault.
Caution!
• Special precautions must be observed when sending probes for repair:
• Remove all visible traces of product from the probe.
• If the product can impair health, i.e. is corrosive, poisonous, carcinogenic,
radioactive etc., please check that the probe is thoroughly decontaminated.
• If the last traces of dangerous products cannot be removed, e.g. product has
penetrated into fissures or diffused into plastic parts, we kindly ask you not to
send the probe for repair.
Cell
type
Electronic insert FEB 17/FEB 17 P
Range f
0
∆
f
Range f
0
∆
f
0.1 bar BA 0
…
100 mbar 200 10 DA -100
…
100 mbar 200 5
0.4 bar BB 0
…
400 mbar 200 2,5 DB -400
…
400 mbar 200 1,25
1.2 bar BC 0
…
1200 mbar 200 0,833 DC -900
…
1200 mbar 200 0,476
4.0 bar BD 0
…
4000 mbar 200 0,25 DD -900
…
4000 mbar 200 0,204
Tabelle 9.3:
Measuring ranges and
probe constants of the
Deltapilot S DB 5x
Silometer FMC 671 Z/676 Z Chapter 9: Trouble-Shooting
55
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