Siemens SITRANS FC330, Руководство по эксплуатации, Страница: 55 / 280

In both cases, insulation can have the unexpected effect of shrouding other attached
components not intended or designed for the process temperatures. When installing an
FCS300 sensor with insulation, observe the following rules:
● Do not cover any part of the transmitter pedestal. The pedestal is designed to separate the
process temperature from the ambient around the DSL or transmitter electronics housing.
● Form a 90° cone around the pedestal.
● Allow free movement of air around the electronics housing to allow temperature equalisation
to occur at all times.
Note
The pedestal has sufficient internal separation from the measuring tubes such that if the main
body of the sensor is insulated, the process medium will not be unduly exposed by the cone
around the pedestal.
4.3 Disassembly
WARNING
Incorrect disassembly
The following risks may result from incorrect disassembly:
- Injury through electric shock
- Risk through emerging media when connected to the process
- Risk of explosion in hazardous area
In order to disassemble correctly, observe the following:
● Before starting work, make sure that you have switched off all physical variables such as
pressure, temperature, electricity etc. or that they have a harmless value.
● If the device contains hazardous media, it must be emptied prior to disassembly. Make
sure that no environmentally hazardous media are released.
● Secure the remaining connections so that no damage can result if the process is started
unintentionally.
Installing/mounting
4.3 Disassembly
SITRANS FC330
Operating Instructions, 01/2019, A5E44030648-AB
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