Endress+Hauser Silometer FMC 672 Z, Инструкция по установке и эксплуатации

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9.3 Exchanging transmitters, probes and electronic inserts
Transmitter If the Silometer has to be exchanged, the replacement need not be recalibrated. Instead
it is usually sufficient to enter all the matrix values (for linearization in the correct order)
from the old into the new transmitter. The replacement will then measure correctly.
•
In the case of level measurement with a reference probe, however, the
reference probe must be recalibrated, unless the matrix values are
downloaded via the ZA 67
…
computer interface.
Capacitance probes
with EC 37 Z/EC 47 Z Provided the sensor constants were entered before calibration, it is not necessary to
recalibrate the instrument when the electronic insert is replaced. On replacement:
•
the zero frequency (or offset) f
o
and
•
sensitivity S
for the range selected (default Range II) must be entered at V3H5 and V3H6 respectively.
Fig. 2.1 shows where the information is to be found on the EC 37 Z and EC 47 Z inserts.
•
If a different range is selected, the transmitter must be recalibrated.
•
If the constants were not entered a recalibration is necessary.
Procedure
Step Matrix Entry Significance
1 V3H5 e.g. 101 Enter zero frequency (offset) for probe at channel 1
2 - »E« Register entry
3 V3H6 e.g. 1.052 Enter sensitivity for probe at channel 1
4 - »E« Register entry
5 V7H5/V7H6
…
For channel 2, repeat steps 1 to 4 at V7H5 and V7H6
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 672 Z/677 Z transmitter or its probes need to be repaired by
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.
Silometer FMC 672 Z/677 Z Chapter 9: Trouble-Shooting
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