Thermo Scientific Sarasota FD910, User Manual

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Thermo Fisher Scientific Sarasota FD910, FD950, & FD960 User Guide 5-1
Chapter 5
Maintenance & Service
Note
The frequency version (F option) of the density meter has no user
serviceable parts and cannot be dismantled. It should be returned to the
factory for service. Consult Thermo Fisher. The headmounted electronics
version (H option) has exchangeable PCBs. Reference to service exchange
of these parts is found in the HME900 manual.

Note
Where solid deposit buildup occurs in the pipeline and density
meter, the accuracy of the density measurements will be degraded.

The density meters have been designed so that, in general, no maintenance
is required. Maintenance is limited to periodically checking the accuracy of
the meter via sample fluids, checking the PRT output, and cleaning the
meter.
If cleaning is required, remove the meter from the line and flush through
with a suitable cleaning fluid. Cleaning fluids should be compatible with
the wetted materials. The maximum temperature of the instrument
(180°C/356°F) should not be exceeded during cleaning. The sensor tubes
may be carefully cleaned using the manufacturer’s cleaning brush.
Caution
If using the manufacturer’s cleaning brush, pass the brush through
the sensor tubes carefully and as straight through as possible to avoid
damaging (scratching) the sensor tubes.

“Clean in place” procedures may be employed if required.