Fluid Components International GF90_GF92 - Manual (Page 69)

Doc. No. 06EN003229 Rev. H 65 GF Series Flow Meter Models GF90/GF92
FLUID COMPONENTS INTERNATIONAL LLC http://www.fluidcomponents.com
CAUTION: To avoid hazards to personnel, ensure that all environmental isolation seals are properly
maintained.
ALERT: The flow transmitter contains electrostatic discharge (ESD) sensitive devices. Use
standard ESD precautions when handling the flow transmitter. See Chapter 3 Installation
for ESD details.
The FCI instrument requires little maintenance. There are no moving parts or mechanical parts subject
to wear in the instrument. The sensor assembly which is exposed to the process media is all stainless
steel construction.
Without detailed knowledge of the environmental parameters of the application surroundings and
process media, FCI cannot make specific recommendations for periodic inspection, cleaning, or testing
procedures. However, some suggested general guidelines for maintenance steps are offered below. Use
operating experience to establish the frequency of each type of maintenance.
Calibration
Periodically verify the calibration of the output and recalibrate if necessary. See Chapter
6 - Troubleshooting. FCI recommends every 18 months at a minimum.
Electrical Connections
Periodically inspect cable connections on terminal strips and terminal blocks. Verify that terminal
connections are tight and physically sound with no sign of corrosion.
Remote Enclosure
Verify that the moisture barriers and seals protecting the electronics in the local and remote enclosures
are adequate and that no moisture is entering those enclosures.
Electrical Wiring
FCI recommends occasional inspection of the system’s interconnecting cable, power wiring and flow
element wiring on a “common sense” basis related to the application environment. Periodically the
conductors should be inspected for corrosion and the cable insulation checked for signs of deterioration.
Flow Element Connections
Verify that all seals are performing properly and that there is no leakage of the process media. Check
for deterioration of the gaskets and environmental seals used.
Flow Element Assembly
Periodically remove the flow element for inspection based on historical evidence of debris, foreign
matter, or scale build-up and appropriate plant shutdown schedules and procedures. Check for
corrosion, stress cracking, and/or build-up of oxides, salts, or foreign substances. The thermowells
must be free of excessive contaminants and be physically intact. Any debris or residue build-up could
cause inaccurate switching. Clean the flow element, as necessary, with a soft brush and available
solvents (compatible with Stainless Steel).
5. Maintenance
Maintenance