Kobold SWK User manual

Operating Instructions
for
Float Flow Meter / Monitor
Model: SWK

SWK
page 2 SWK K12/0224
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 3
3.Instrument Inspection .................................................................................... 3
4.Regulation Use ............................................................................................. 4
5.Operating Principle ........................................................................................ 4
6.Mechanical Connection ................................................................................. 5
7.Electrical Connection .................................................................................... 5
8.Operation / Configuration / Adjustments ....................................................... 6
8.1Adjustment of Limit-Value (SWK-1...) .................................................. 6
8.2Adjustment of Limit-Value (SWK-2...) .................................................. 6
9.Maintenance ................................................................................................. 7
10.Technical Information .................................................................................... 7
11.Order Codes ................................................................................................. 7
12.Dimensions ................................................................................................... 7
13.Disposal ........................................................................................................ 8
14.EU Declaration of Conformance ................................................................... 9
15.UK Declaration of Conformity ...................................................................... 10
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com

SWK
SWK K12/0224 page 3
2. Note
Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you
have purchased. If you need an instruction manual that corresponds to the
purchased product version, you can request it from us free of charge by email
([email protected]) in PDF format, specifying the relevant invoice number and
serial number. If you wish, the operating instructions can also be sent to you by
post in paper form against an applicable postage fee.
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and in accordance with local regulations
applying to Health & Safety and prevention of accidents.
When used in machines, the measuring unit should be used only when the
machines fulfil the EC-machine guidelines.
as per PED 2014/68/EU
In acc. with Article 4 Paragraph (3), "Sound Engineering Practice", of the
PED 2014/68/EU no CE mark.
Diagram 8, Pipe, Group 1 dangerous fluids
3. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
The standard delivery includes:
 Float Flow Meter / Monitor Model: SWK

SWK
page 4 SWK K12/0224
4. Regulation Use
These units, type SWK, are used for the purpose of measuring and monitoring
liquid flow. Only clean, low-viscous and homogeneous liquids may be measured
which do not chemically attack the materials used in the construction of these
units. An attempt to measure high-viscous liquids may lead to considerable
measurement errors.
Large dirt-particles can cause the blockage of float and subsequently turn on
error indications. Also, ferrite particles, which deposit on float (with embedded
magnets), can generate the same effect (we recommend a magnet-filter).
These units are configured in the following manner:
 Housing made of Brass, St. Steel or PVC
 Attached reed contact N/O with 1m PVC cable (Brass version)
 Attached reed contact N/O with 2m PVC cable (PVC/VA version)
 Attached and aligned pointer display (option)
5. Operating Principle
KOBOLD Flow Meter/Monitor of type SWK operates according to the well-known
float principle, however without making use of the generally employed extended
measuring tube. Inside a cylindrical flow-tube a float with aperture moves in the
direction of the flow against the recoiling force of a spring. Within the float, a pair
of magnets is located which trigger a potential-free protective-gas reed contact
and drives a pointer display. The reed contact is mounted on the exterior of the
flow-housing. The springs arrangement allows the unit to be operated without
consideration to mounting position and keeps the installation dimensions to a
minimum. Flow monitors of type SWK generally find application where small
volume flow needs to be measured in a fail-safe manner.

SWK
SWK K12/0224 page 5
6. Mechanical Connection
Before installation:
 Make sure that the permitted maximum operating pressure and the operating
temperature of the device are not exceeded.
 Make sure that the electrical supply for the devices corresponds with the
operational data of the device.
 Make sure that no remains of packing material exist within the device.
 The devices should not be installed within an inductive field.
 If possible, it should be checked, after the mechanical installation whether the
connection joints/ piping is properly sealed.
Attention! A displacement of switching range occurs if the flow takes
place from top to bottom.
7. Electrical Connection
Attention! Make sure that the voltage values of your system
correspond with the voltage values of the measuring unit, mentioned
on type-label.
 Make sure that the supply wires are de-energized.
 The connection of the bistable reed contact succeeds is accomplished through
the cable on the contact housing. The potential-free contact closes on rising
level above the adjusted flow value.

SWK
page 6 SWK K12/0224
8. Operation / Configuration / Adjustments
The commissioning of these units is prohibited in machines (as long as the
guidelines 2006/42/EC remain enforced), which do not comply with these
guidelines.
The unit is supplied in 'ready for operation' condition. The switching point is
adjusted on the lowest scale value.
8.1 Adjustment of Limit-Value (SWK-1...)
 Loosen the knurled nut on the reed contact.
 Adjust the marking on the contact for the desired value on the scale. In once
positioned the knurled nut should be tightly screwed.
8.2 Adjustment of Limit-Value (SWK-2...)
 Loosen the knurled nut on the reed contact.
 Connect a suitable continuity-tester on cable ends.
 Case 1: On an installed unit
 Open the supply line, and let the flow-medium enter slowly, till the pointer
display shows the desired flow value- at which the rising flow should operate
the switch (the value for the decreasing flow lies below due to the hysteresis).
 Case 2: On an uninstalled unit the adjustment may be performed by lifting
the float with a suitable tool.
 Switch-housing is repositioned from top to bottom, till the reed contact just
closes (electrical continuity). In this position, secure the contact by tightening
the knurled nut.
The unit is now adjusted and ready for operation.
On correct adjustment, the limit-value contact performs bistable action. That
means, even after on crossing above the adjusted limit-values, the contact
remains closed.
Hysteresis
Hysteresis is an indication of difference between switch-on (rising float) and
switch-off (falling float) points of a contact. The average hysteresis corresponds
to a float-centre movement of about 3 mm.

SWK
SWK K12/0224 page 7
9. Maintenance
As long as the medium to be measured is not contaminated, the device SWK is
almost maintenance-free. With lime or such depositions within inner sections
the device should be cleaned regularly.
Attention! Before the commencement of maintenance work, make sure
that the supply wires are de-energized.
10. Technical Information
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com
11. Order Codes
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com
12. Dimensions
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com

SWK
page 8 SWK K12/0224
13. Disposal
Note!
 Avoid environmental damage caused by media-contaminated parts
 Dispose of the device and packaging in an environmentally friendly
manner
 Comply with applicable national and international disposal regulations and
environmental regulations.
Batteries
Batteries containing pollutants are marked with a sign consisting of a crossed-out
garbage can and the chemical symbol (Cd, Hg, Li or Pb) of the heavy metal that
is decisive for the classification as containing pollutants:
Cd1 Hg2 Pb3 Li4
1. „Cd" stands for cadmium
2. „Hg" stands for mercury
3. „Pb" stands for lead
4. „Li" stands for lithium
Electrical and electronic equipment

SWK
SWK K12/0224 page 9
14. EU Declaration of Conformance
We, KOBOLD Messring GmbH, Nordring 22-24, 65719 Hofheim, Germany,
declare under our sole responsibility that the product:
Float Flow Meter / Monitor Model: SWK...
to which this declaration relates is in conformity with the following EU directives
stated below:
2014/35/EU Low Voltage Directive
2011/65/EU RoHS (category 9)
2015/863/EU Delegated Directive (RoHS III)
Also, the following standards are fulfilled:
EN 61010-1:2010 + A1:2019 + A1:2019/AC:2019 Safety requirements for
electrical equipment for measurement, control and laboratory use - Part 1:
General requirements
EN 60529:2014 Protection through housing (IP-Code)
EN IEC 63000:2018 Technical documentation for the assessment of electrical
and electronic products with respect to the restriction of hazardous substances
Hofheim, 28 Feb. 2024
H. Volz J. Burke
General Manager Compliance Manager

SWK
page 10 SWK K12/0224
15. UK Declaration of Conformity
We, KOBOLD Messring GmbH, Nordring 22-24, 65719 Hofheim, Germany,
declare under our sole responsibility that the product:
Low Volume Variable Area Flowmeters/Monitors for liquids
model: SWK -...
to which this declaration relates is in conformity with the following UK directives
stated below:
S.I. 2016/1101 Electrical Equipment (Safety) Regulations 2016
S.I. 2012/3032 The Restriction of the Use of Certain Hazardous Substances in
Electrical and Electronic Equipment Regulations 2012
Also, the following standards are fulfilled:
BS EN 61010-1:2010+A1:2019 Safety requirements for electrical equipment
for measurement, control, and laboratory use. General requirements
BS EN 60529:1992+A2:2013 Degrees of protection provided by enclosures
(IP Code)
BS EN IEC 63000:2018 Technical documentation for the assessment of
electrical and electronic products with respect to the restriction of hazardous
substances.
Hofheim, 28 Feb. 2024
H. Volz J. Burke
General Manager Compliance Manager