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3. Safety
3. Safety
3.1 Intended use
The inline process transmitter, model DMSU22SA, is used to measure relative pressure,
absolute pressure or vacuum and +/- measuring ranges in food production and in
pharmaceutical plants. 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
signal" or a "4 ... 20 mA" current loop.
The instrument has integrated sensor monitoring that can detect a leakage in the sensor
tube and transmit the resulting alarm status. The alarm signal is output either via the
HART
protocol or as an error signal on the current loop.
Only use the instrument in applications that lie within its technical performance limits (e.g.
max. ambient temperature, material compatibility, ...). Only operate the instrument with
media that cannot damage the wetted parts or diffuse through them. Only use the instru-
ment in compliance with chapter 5.2.1 "Installation regulations for self-draining".
→ For performance limits, see chapter 15 "Specifications".
Instrument versions without Ex marking are not approved for use in hazardous areas!
With versions for hazardous areas, also follow the additional operating instructions, article
number 14600275!
The instrument has been designed and built solely for the intended use described here,
and may only be used accordingly.
The technical specifications contained in these operating instructions must be observed.
Improper handling or operation of the instrument outside of its technical specifications
requires the instrument to be taken out of service immediately and inspected by an
authorised WIKA service engineer.
The manufacturer shall not be liable for claims of any type based on operation contrary to
the intended use.
Should the operating instructions not be observed or complied with, approvals
(e.g. EHEDG) can become invalid.
WIKA operating instructions, model DMSU22SA
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