Chapter 3 — Maintenance and Troubleshooting
13
Chapter 3 — Maintenance and
Troubleshooting
This section shows how to verify that the system is operating properly and
identify parts of the system that are not working properly.
The 3300 XL Transducer System (probe, cable and Proximitor® Sensor), when
correctly installed and verified, does not need calibration or verification at
regular intervals. If the monitor OK light (green) indicates a NOTOK condition
(light is
not
illuminated), either a fault has occurred in the field wiring/transducer
system/power source and/or probe is too close to target or detecting other
material than target.
Bently Nevada recommends the following practices to assure continued
satisfactory operation:
Verify operation by using the scale factor verification method on the following
page, if:
•
Any of the system components (probe, cable or Proximitor® Sensor) are
replaced.
•
Any of the components are removed and reinstalled or moved and
remounted.
•
Any of the components appear to be damaged.
•
Whenever the machine being monitored is over-hauled.
Please note that a step change in the output of the transducer system, or other
output that is not consistent with the associated machinery’s trended data is, in
most instances, not a transducer problem but a machinery problem. Verification
of the transducer system under these conditions can be done at the user’s
discretion.
Under harsh operating conditions some users prefer to verify all transducers at a
regular interval. As noted above, this is not required with the 3300 XL
Transducer System. Users who wish to verify the system on a regular interval
should use an interval consistent with their own practices and procedures, which
may or may not be based upon ISO 10012-1 “Quality Assurance Requirements
for Measuring Equipment” (section 4.11).
For target materials other than AISI 4140 steel and for other special applications,
contact your local Bently Nevada office.
Note: Hazardous Locations
Area must be free of hazardous material before any
maintenance or troubleshooting can be performed.
The scale factor verification requires the following instruments and equipment:
Digital multimeter
spindle micrometer
fixed resistor, 10 k
Ω
1%
power supply (-24Vdc
±
1)
Proximitor and Probes
