IFM SBT633 User manual

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Operating instructions

Mechatronic flow sensor

SBT633

SBT634

SB0527

80270485 / 00 11 / 2017

UK

2

1 Preliminary note

Technical data, approvals, accessories and further information at

www.ifm.com.

► Instructions

→ Cross-reference

Important note

Non-compliance may result in malfunction or interference.

Information

Supplementary note.

2 Safety instructions

• 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 (→ 3 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 unit

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 liquids (water, glycol solutions).

It detects the flow quantity on the principle of differential pressure and converts it

into an analogue output signal (4...20 mA).

3

UK

4 Function

0

0

1Q [l/min]

1: ﬁ 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 flow quantity is above the final value of the

measuring range.

4

5 Installation

WARNING

Personal injury can occur if the unit and connections become hot or media

under pressure (up to 15 bar) or hot media (up to 180 °C) leak.

► Install the unit according to the applicable rules and regulations.

► 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 hazard to person-

nel from touching the sensor, connections and cables or from leaking media.

► Insert the unit into the R ¾ pipe according to the direction of flow (arrow) and

tighten.

The best precision of the sensor is achieved by horizontal installation in a

horizontal pipe (fig. 1).

Fig. 1: Recommended mounting position

IN OUT

OUT IN

IN = inlet; OUT = outlet

► Do not install the unit on ferromagnetic materials.

(Ferromagnetic materials are all metals exerting an attractive force on test

magnets.)

► Do not operate the unit in the vicinity of magnetic constant and alternating

fields (e.g. welding systems).

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UK

► If the sensors are installed side by side, observe a minimum distance of 50 mm

between the sensor axes.

Baffled pipes on the sensor's inlet or outlet side are not necessary.

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:

BN: brown

BU: blue

WH: white

L+

L

1BN

2WH

3BU

Colours to DIN EN 60947-5-2

7 Technical data and scale drawing

Technical data and scale drawing at www.ifm.com

8 Maintenance, repair, disposal

If used correctly, no maintenance and repair measures are necessary.

In case of strongly polluted media: mount a filter before the inlet (IN).

Recommendation: use a 200-micron filter.

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.