IFM Electronic SB 4 Series User manual

Operating instructions
Mechatronic flow sensor
SBx4xx
80288586 / 00 11 / 2019
UK

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1 Preliminary note
►Instructions
> Reaction, result
→Cross-reference
Important note
Non-compliance may result in malfunction or interference.
Information
Supplementary note.
CAUTION
Warning of personal injury.
Slight reversible injuries may result.
Contents
1 Preliminary note...................................................................................................2
2 Safety instructions ...............................................................................................3
3 Functions and features ........................................................................................3
4 Function...............................................................................................................4
5 Installation............................................................................................................4
5.1 Installation in case of water containing dirt....................................................6
6 Electrical connection............................................................................................6
7 Technical data and scale drawings ......................................................................7
8 Troubleshooting ...................................................................................................7
9 Maintenance, repair and disposal........................................................................8

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2 Safety instructions
• The device described is a subcomponent for integration into a system.
- The manufacturer is responsible for the safety of the system.
- The system manufacturer undertakes to perform a risk assessment and to
create a documentation in accordance with legal and normative requirements
to be provided to the operator and user of the system. This documentation
must contain all necessary information and safety instructions for the operator,
the user and, if applicable, for any service personnel authorised by the manu-
facturer of the system.
• Read this document before setting up the product and keep it during the entire
service life.
• The product must be suitable for the corresponding applications and environ-
mental conditions without any restrictions.
• Only use the product for its intended purpose (→ Functions and features).
• Only use the product for permissible media (→ Technical data).
• If the operating instructions or the technical data are not adhered to, personal
injury and/or damage to property may occur.
• The manufacturer assumes no liability or warranty for any consequences
caused by tampering with the product or incorrect use by the operator.
• Installation, electrical connection, set-up, operation and maintenance of the
product must be carried out by qualified personnel authorised by the machine
operator.
• Protect units and cables against damage.
3 Functions and features
The unit monitors liquid media (water, glycol solutions, industrial oils, coolants). It
detects the volumetric flow using the principle of differential pressure and converts
it into an analogue output signal (4...20 mA).

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4 Function
0
0
1Q [l/min]
1: nal value of the measuring range
The analogue signal for water (20 °C) is linear from 4 mA (= no flow) to 20 mA
(= final value of the measuring range, see Technical Data).
For an output signal > 20 mA the volumetric flow is above the final value of the
measuring range.
5 Installation
CAUTION
During installation or in case of a fault (e.g. housing damage) media
under high pressure or hot media can leak from the system.
►Ensure that the system is free of pressure during installation.
►Ensure that no media can leak at the mounting location during
installation.
► Equip the unit with suitable protection (e.g. cover) to avoid haz-
ard to personnel from leaking media.
Loosening the socket head screw (1) and moving the protective cover do
not change the setting of the sensor. However, moving the protective cover
may be useful to read the label.

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► Insert the unit into the pipe according to the direction of flow (arrow) and
tighten.
IN OUT
1
IN = inlet; OUT = outlet
Calming sections on the sensor's inlet or outlet side are not necessary.
►Avoid major changes of cross section on the inlet side.
►Observe the following minimum distances:
Distance between the sensor and ferromagnetic materials. ≥ 30 mm
Distance between the sensor and constant / alternating fields. ≥ 500 mm
Distance between the sensor axes for side-by-side installation. ≥ 50 mm

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5.1 Installation in case of water containing dirt
In water containing dirt, horizontal installation is recommended.
► Adhere to the inclination angle to the horizontal axis:
± 90°
± 5°
In clean water, installation in vertical pipes is also possible.
6 Electrical connection
The unit must be connected by a qualified electrician.
The national and international regulations for the installation of electrical
equipment must be adhered to.
Voltage supply according to EN 50178, SELV, PELV.
► Disconnect power.
►Connect the unit as follows:
L+
L
1 BN
2 WH
3 BU
Colours to DIN EN 60947-5-2
BN: brown
BU: blue
WH: white
Information about available plugs and sockets at www.ifm.com.

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7 Technical data and scale drawings
Technical data and scale drawing at www.ifm.com.
8 Troubleshooting
If there are dirt particles between the float and the housing the display value of the
sensor does not return to zero in case of flow standstill. In case of dirt the display
value can be up to 30 % of the final value of the measuring range. Corrective
action → 9 Maintenance, repair and disposal.

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9 Maintenance, repair and disposal
If used correctly, no maintenance and repair measures are necessary.
Only the manufacturer is allowed to repair the unit.
After use dispose of the unit in an environmentally friendly way in accordance with
the applicable national regulations.
In case of heavily polluted media:
► Mount a filter in front of the inlet (IN).
Recommendation: use a 200-micron filter.
If measurement errors occur because of an insufficient filtration cleaning may be
required:
► Loosen socket head screw (1) in the protective cover (2) and unscrew.
►Unscrew sensor head.
► Remove float (3) and spring (4).
►Clean the inside of the float, spring and housing, e.g. by means of compressed
air.
► Before re-assembly check O-ring (5) for damage.
If necessary, replace and grease.
►After cleaning install components again.
►Tighten sensor head with a tightening torque of 10 Nm.
► To restore the measurement accuracy, press the float until you feel a stop (7)
using something non magnetic (6), e.g. a finger and hold for at least 2 seconds.
►Screw and align protective cover and tighten socket head screw with a tighten-
ing torque of 0.7 Nm.

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More information at www.ifm.com