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Translation of the original instructions

1Further applicable documents

All available documents for the product www.festo.com/pk.è

2Safety

2.1Intended use

The SFTE is intended for detecting the flow of gaseous media in piping systems or

terminals in the industry sector.

WARNING!

Risk of injury from prohibited media.

Use of the product in combination with prohibited media can result in personal

injury.

•Do not use the product with flammable or corrosive gases.

NOTICE!

Product damage due to incorrect air quality class.

Condensation water, oil mist, foreign matter and other dirt in the compressed air

can damage the product and cause incorrect measurements and malfunctions.

•Adhere to the specified air quality class for the operating medium.

2.2General safety instructions

•The product may only be used in its original status without unauthorised

modifications.

•Only use the product if it is in perfect technical condition.

•Take into consideration the ambient conditions at the location of use.

•Comply with all applicable national and international regulations.

•Do not use the product in combination with inflammable, caustic, vapour-

emitting or other hazardous media.

•Check the operating medium to determine compatibility with the materials it

contacts.

•Observe the specifications on the product labelling.

•Remove all transport packaging. Recycle packaging material.

3Service

•If you have technical questions, contact the regional Festo contact at

èwww.festo.com.

4Accessories

Accessories www.festo.com/catalogue.è

5Product overview

5.1Design

1

Pneumatic connection (inlet)

2

Electrical connection

3

Pneumatic connection (outlet)

Fig. 1

5.2Product variants and type code

FeatureValueDescription

TypeSFTEFlow transmitter

-1Max. 1 l/min

-2Max. 2l/min

-5Max. 5 l/min

Flow measuring range

-10Max. 10 l/min

Flow inputrUnidirectional

-Q3Push-in connector 3mm

-Q4Push-in connector 4mm

Pneumatic connection

-M5M5

NoneThread type

FFemale thread

-B1…5 VElectrical output

-V0…10 V

-2.5KCable 2.5 m, open endElectrical connection

-0.3M8Cable 0.3 m, with plug connect-

or M8

Tab. 1

6Function

The SFTE detects the flow rate (standard flow rate, mass flow rate) with the aid of

a thermal procedure. Measurements are carried out using a micromechanical

sensor element with a downstream electronic evaluation unit. The connection to

higher-level systems is implemented through a non-linearized analogue output.

The analogue output is calibrated at zero point and at the maximum flow rate

è 12 Technical data. The characteristic curve of the analogue output results from

the raw signal of the sensor element. In addition to a fast response time, the non-

linearized characteristic has the advantage of high sensitivity in the lower flow

range.

NOTICE!

Damage as a result of overflow.

Strong overflow can destroy the sensor element.

•Do not exceed the maximum overflow 12 Technical data.è

•Avoid rapid changes in pressure, which cause impermissible overflow.

6.1Characteristic curve

The following figures show the typical characteristic curve.

8035274

SFTE

Flow Transmitter

8035274

2018-06

[8035276]

Instructions|Operating

Festo SE & Co. KG

Ruiter Straße 82

73734 Esslingen

Germany

+49 711 347-0

www.festo.com

Produktspecifikationer