WIKA FLRU-SFI User manual

Operating instructions
Betriebsanleitung
EN
DE
Reed-Füllstandstransmitter zum Anschluss an
WIKA-Funkeinheit, Typ FLRU-SFI
Reed level transmitter for connection to WIKA radio unit,
model FLRU-SFI
FLRU-SFI

2
14609053.01 07/2023 EN/DE
WIKA operating instructions, model FLRU-SFI
EN
DE
© 07/2023 WIKA Alexander Wiegand SE & Co. KG
All rights reserved. / Alle Rechte vorbehalten.
WIKA®is a registered trademark in various countries.
WIKA®ist eine geschützte Marke in verschiedenen Ländern.
Prior to starting any work, read the operating instructions!
Keep for later use!
Vor Beginn aller Arbeiten Betriebsanleitung lesen!
Zum späteren Gebrauch aufbewahren!
Operating instructions model FLRU-SFI Page 3 - 34
Betriebsanleitung Typ FLRU-SFI Page 35 - 66

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Contents
Contents
1. General information 4
2. Design and function 5
2.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Description . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Scope of delivery . . . . . . . . . . . . . . . . . . . . . 6
2.4 Product passport . . . . . . . . . . . . . . . . . . . . . 6
3. Safety 7
3.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . 7
3.2 Intended use . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Improper use . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Responsibility of the operator . . . . . . . . . . . . . . . . . 10
3.5 Personnel qualification . . . . . . . . . . . . . . . . . . . 10
3.6 Personal protective equipment . . . . . . . . . . . . . . . . 11
3.7 Labelling, safety marks . . . . . . . . . . . . . . . . . . .12
3.8 Ex marking . . . . . . . . . . . . . . . . . . . . . . . 13
3.9 Special conditions for installation and operation (X conditions) . . . . . 15
3.10 Specifications and temperature limits . . . . . . . . . . . . . .15
3.11 Certified WIKA radio unit, model NETRIS®3 . . . . . . . . . . . 15
4. Transport, packaging and storage 16
4.1 Transport. . . . . . . . . . . . . . . . . . . . . . . . 16
4.2 Packaging and storage . . . . . . . . . . . . . . . . . . .16
5. Commissioning, operation 17
5.1 Mechanical mounting . . . . . . . . . . . . . . . . . . . 19
5.2 Electrical connection, digital output . . . . . . . . . . . . . . .21
5.3 Commissioning . . . . . . . . . . . . . . . . . . . . . 22
6. Faults 22
7. Maintenance, cleaning and calibration 24
7.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . 24
7.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . .25
8. Dismounting, return and disposal 26
8.1 Dismounting . . . . . . . . . . . . . . . . . . . . . . 26
8.2 Return. . . . . . . . . . . . . . . . . . . . . . . . . 27
8.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . .27
9. Specifications 28
10. Accessories 32
Annex : EU declaration of conformity 33

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1. General information
1. General information
■The instrument described in the operating instructions has been manufactured
using state-of-the-art technology. All components are subject to stringent quality and
environmental criteria during production. Our management systems are certified in
accordance with ISO 9001 and ISO 14001.
■These operating instructions contain important information on handling the instrument.
Working safely requires that all safety instructions and work instructions are observed.
■Observe the relevant local accident prevention regulations and general safety regula-
tions for the instrument's range of use.
■The operating instructions are part of the product and must be kept in the immediate
vicinity of the instrument and readily accessible to skilled personnel at any time. Pass
the operating instructions on to the next operator or owner of the instrument.
■Skilled personnel must have carefully read and understood the operating instructions
prior to beginning any work.
■In case of a different interpretation of the translated and the English operating instruc-
tions, the English wording shall prevail.
■The general terms and conditions contained in the sales documentation shall apply.
■Subject to technical modifications.
■Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: LM 20.13
- Additional documentation: Special documentation LoRaWAN®communication
specification, article number 14622627
- Contact: Tel.: [phone]
[e-mail]
Supplementary documentation:
▶Please follow all the documentation included within the scope of delivery.
Before commissioning the instrument, the operating instructions for the
WIKA model NETRIS®3 radio unit, article number 14521664, must also
be observed!

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2. Design and function
2.1 Overview
1Coupler connector
2Electronic unit
3Mounting thread
4Guide tube
5Float
6Adjusting collar






1. General information / 2. Design and function
Abbreviations, definitions
■Bullet
▶Instruction
1. ... x. Follow the instruction step by step
→See ... cross-references
UWI Unified WIKA Interface

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2.2 Description
Level transmitters work on the float principle with magnetic transmission. A permanent
magnet built into the float triggers, with its magnetic field, the resistance measuring chain
built into the guide tube.The entire assembly corresponds to a 3-wire potentiometer
circuit.The float changes its height with the level of the medium it is monitoring.The
measured resistance signal is proportional to the level.The measurement voltage is very
finely stepped due to the contact separation of the resistance measuring chain and is
thus virtually continuous.
Ex version
The model FLRU-SFI is suitable for use in hazardous areas.
2.3 Scope of delivery
Cross-check scope of delivery with delivery note.
2.4 Product passport
The product passport is a web application where various information about an instrument
can be retrieved by entering the 11-digit alphanumeric serial number. This includes, for
example, instrument configuration, article number, operating instructions and data sheet.
The product passport can be retrieved from the product page or directly from the corre-
sponding web application.
Web application
2. Design and function

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3. Safety
3.1 Explanation of symbols
DANGER!
... indicates a directly dangerous situation resulting 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.
WARNING!
... indicates a potentially dangerous situation that can result in burns, caused
by hot surfaces or liquids, if not avoided.
DANGER!
... indicates a potentially dangerous situation in the hazardous area that can
result in serious injury or death, if not avoided.
Information
... points out useful tips, recommendations and information for efficient and
trouble-free operation.
3. Safety

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3.2 Intended use
The model FLRU-SFI features an integrated transmitter with electronic signal process-
ing and is prepared for connection to the WIKA model NETRIS®3 radio unit.The instru-
ment is used for measuring the level in hazardous areas of industrial applications. Level
transmitters of this model series can be mounted directly into the process.The instru-
ment offers many application possibilities for liquid, aggressive media that are not highly
viscous or crystallising. All electrical components are protected against humidity and
designed to be vibration-resistant.The electrical connection is made via an M12 x 1
circular connector.
The model FLRU-SFI level transmitter in combination with the model NETRIS®3 radio
unit is used wherever web-based remote monitoring of the fill level is desired in addition
to on-site indication.
Only use the instrument in applications that lie within its technical performance limits. A
change in the ambient temperature can lead to a fault in the instrument function due to
the formation of condensation. Before putting it back into operation, wait for the instru-
ment temperature and the room temperature to equalise.
The operator of the plant in which the product is used must ensure the compatibility of the
materials of the wetted parts with the medium used.
The instrument must only be used with media which are not harmful to the wetted parts
over the entire range of use of the instrument.
Any change in the state of the matter or any decomposition of unstable media is not
permitted.
Do not operate the instrument in the direct vicinity of ferromagnetic environments (min.
clearance 50 mm [1.96 in]).
The instrument has been designed and built solely for the intended use described here,
and may only be used accordingly.
The technical specifications of the enclosed operating instructions and the operating
instructions for the NETRIS®3 radio unit must be observed. Improper handling or opera-
tion 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,
see chapter 9 “Specifications”. The manufacturer shall not be liable for claims of any type
based on operation contrary to the intended use.
Certificates and applied standards
EU-type examination certificate Certificate IECEx
BVS 23 ATEX E 012 X
EN IEC 60079-0:2018
IEC 60079-11:2023
IEC 60079-26:2021
IECEx BVS 23.0006X
IEC 60079-11:2017 (7th edition)
IEC 60079-11:2023 (7th edition)
IEC 60079-26:2021(4th edition)
3. Safety

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Assembly
For the application limits of the assembly, compliance with the specifications of the WIKA
radio unit and the specifications of the model FLRU-SFI is required.The permissible
ambient temperature range of the assembly is determined by the instrument with the
lowest temperature range.
DANGER!
Injuries through improper use
Failure to follow instructions for the assembly can result in death or serious
injury.
▶Assessment of operability by skilled personnel.
The remote monitoring of the level via radio transmission is only suitable for non-critical
and non-safety-relevant applications.
The remote monitoring function must not be used for control purposes, as it
cannot be guaranteed that data packets won't be lost during radio transmis-
sion.
3.3 Improper use
WARNING!
Changes to the instrument
Changes to the instrument can lead to hazardous situations and injuries.
▶Refrain from unauthorised modifications or changes to the instrument.
▶The instrument must only be used for the usage described here.
▶Only use the approved radio unit, see chapter
3.11 “Certified WIKA radio unit, model NETRIS®3”.
▶The maximum cable length of 3 m [9.8 ft] to the radio unit must be
observed.
WARNING!
Injuries through improper use
Improper use of the instrument can lead to hazardous situations and injuries.
▶Once the instrument has been assembled, do not carry it by the radio unit.
▶Do not use the instrument for abrasive and highly viscous or crystallising
media.
The instrument must not be used as part of a safety or emergency shutdown device
(safety accessory).
Protection against external impact
Avoid any kind of external impact. External impacts can generate sparks through friction
processes between different materials.
3. Safety

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Explosive atmosphere consisting of hybrid mixtures
The instruments must not be used in areas in which an atmosphere consisting of explo-
sive hybrid mixtures (dusts mixed with gases) can occur.
Handling of materials
Avoid exposing the instrument to any substances or ambient conditions that could
negatively affect the instrument and the materials used. Avoid handling substances that
are liable to spontaneous combustion. For a list of the materials used, see chapter 9
“Specifications”.
3.4 Responsibility of the operator
The instrument is used in the industrial sector.The operator is therefore responsible for
legal obligations regarding safety at work.
The safety instructions within these operating instructions, as well as the safety, accident
prevention and environmental protection regulations for the application area must be
maintained.
The operator is obliged to maintain the product label in a legible condition.The legibility of
the marking must be observed during time in use but at least during inspection periods of
three years. If any harm of the legibility is found please contact the manufacturer to renew
the marking.
To ensure safe working on the instrument, the operating company must ensure
■that suitable first-aid equipment is available and aid is provided whenever required.
■that the operating personnel are regularly instructed in all topics regarding work safety,
first aid and environmental protection and know the operating instructions and, in
particular, the safety instructions contained therein.
■that the instrument is suitable for the particular application in accordance with its
intended use.
■that personal protective equipment is available.
Any use beyond or different to the intended use is considered as improper use.
3.5 Personnel qualification
WARNING!
Risk of injury should qualification be insufficient
Improper handling can result in considerable injury and damage to property.
▶The activities described in these operating instructions may only be
carried out by skilled personnel who have the qualifications described
below.
▶Keep unqualified personnel away from hazardous areas.
3. Safety