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Dinel, s.r.o. RFLS–28
The level sensor is equipped with protection against electric shock on the electrode, reverse polarity,
output current overload, short circuit and against current overload on output.
Protection against dangerous contact is provided by low safety voltage according to HD 60364-4-
41. Electromagnetic compatibility is provided by conformity with standards EN 55011 / B, EN 61326-
1, EN 61000-4-2 to -6 and -8.
A declaration of conformity was issued for this device in the wording of Act No. 90/2016 Coll., as
amended. Supplied electrical equipment matches the requirements of valid European directives for
safety and electromagnetic compatibility.
13 . Safety, protection and compatibility
The level meter does not require any personnel for its operation. Maintenance of this equipment
consists in verification of integrity of the level meter and of the supply cable. Cleaning or sterilization
of the sensor (CIP / SIP) is possible under the conditions specified in the technical specifications.
The high-frequency level sensors RFLS-35 meet the safety integrity level requirements according
to standard EN 61508. The sensors are intended for level height detection applications of liquid and
pasty media with increased safety demands in modes:
•
Overfill protection
•
Dry run protection
In both modes, the sensors meet the requirements for functional safety at level SIL 2.
The sensor electronics have 1oo1 architecture (according to the output variant single-channel with
-
out P (R) diagnostics, or single-channel with PD diagnostics).
It is recommended to perform a function test of the sensor's safety function 1 per year.
15 . Use, manipulation, and maintenance
14 . Functional safety
It is forbidden to make any changes or interventions to the RFLS–28 sensor without the
consent of the producer. Any repairs must only be carried out by the producer or authorized
service organisations.
Assembly, installation, commissioning, service and maintenance of the RFLS–28 level sensor
must be carried out in accordance with this manual and the provisions of valid standards for
the installation of electrical equipment must be complied with.
