2.4
Monitoring and safety features
Safety features
The transmitter is protected against external
influences and damage by the following
design measures:
• Rugged housing
• Degree of protection provided by
enclosure: IP 65 (CUM 253)
• UV resistance
Monitoring features
In the event of a system error or power failure,
an alarm condition is signalled via a fail-safe
fault signalling contact.
2.5
Immunity to interference
This instrument has been tested according to
the applicable European standards for
industrial applications with regard to
electromagnetic compatibility. It is carefully
protected against electromagnetic
interference by constructive design measures.
Warning:
The specified immunity to
interference only applies for devices
connected as outlined in these
operating instructions.
2.6
Declaration of conformity
The transmitter CUM 223/253 has been
developed and manufactured in accordance
with currently valid European standards and
directives..
E+H certifies the compliance with the
standards by using the
4
sign.
UM253E02.CHP
Liquisys M CUM 223 / 253
Safety instructions
Hauser
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