Safety; Explanation Of Symbols; Intended Use - WIKA DMSU21SA Mode D'emploi

3. Safety

3. Safety

3.1 Explanation of symbols

EN
DANGER!
... indicates a potentially dangerous situation in the hazardous area that can
result in serious injury or death, if not avoided.
WARNING!
... indicates a potentially dangerous situation that can result in serious injury
or death, if not avoided.
CAUTION!
... indicates a potentially dangerous situation that can result in light injuries or
damage to property or the environment, if not avoided.
DANGER!
... identifies hazards caused by electrical power. Should the safety instructions
not be observed, there is a risk of serious or fatal injury.
Information
... points out useful tips, recommendations and information for efficient and
trouble-free operation.

3.2 Intended use

The diaphragm monitoring system described here is an instrument for measuring
pressure and, in addition, for monitoring the diaphragm condition.
Depending on the selected measuring range, the instrument can be used for measuring
gauge pressure/vacuum or absolute pressure. The physical quantity pressure is
converted into an electrical output signal. Depending on the selected version, the output
signal is "4 ... 20 mA with HART
A double-diaphragm system ensures the separation of the process and the pressure
measuring instrument. In the event of a diaphragm rupture, the pressure monitored in
the intermediate space increases. As soon as the display of the monitoring element
exceeds the predefined set point, the alarm signal for a diaphragm rupture is transmitted.
Depending on the version, the alarm signal is output either via the HART
an error signal on the current loop.
The measuring technology of the instrument withstands the process pressure despite
the diaphragm rupture. The measuring function of the process transmitter is maintained
without restrictions.
10
®
signal" or a "4 ... 20 mA" current loop.
WIKA operating instructions, model DMSU21A
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protocol or as