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3  Functions and features

The unit monitors the level of liquids in tanks�

3.1  Applications

 

● Water, hydrous media, oils, coolant emulsions�

3.2  Restriction of the application area

 

● The unit is not suitable for acids, alkalis, granulates, bulk materials�

 

● It is not suitable for hygienic areas� 

 

● Highly conductive foam can trigger a switching operation� Check the conse-

quences by performing a test in your application! 

 

● Maximum tank pressure: ± 0�5 bar (when mounted using the appropriate 

mounting accessories; → chapter 5�2 Installation procedure)�

4  Function

4.1  Measuring principle

The unit operates to the capacitive measuring principle� By direct contact with the 

medium the unit detects whether the maximum level (limit level) is reached and 

indicates this by a switched signal�

Max� level reached

output open (OFF)

Max� level not reached

output closed (ON)

The dielectric constant of a medium is important for its detection� Media with a 

dielectric constant > 1�8 are safely detected�

Dielectric constants of common liquids
Mineral oil

≈ 2

Coolant emulsion

≈ 25���75

Glycol

≈ 37

Water

≈ 80

Water, demineralised

≈ 30

Electrically conductive and non conductive media are detected�

Summary of Contents for efector160 LI214 Series

Page 1: ...Operating instructions Binary level sensor LI214x 704776 00 10 2010 UK...

Page 2: ...rinciple 4 4 2 Features of the unit 5 5 Installation 5 5 1 Installation location environment 5 5 2 Mounting 6 5 3 Set the installation depth 6 6 Electrical connection 7 7 Operating and display element...

Page 3: ...t the product is suitable for your application without any restrictions If the operating instructions or the technical data are not adhered to personal injury and or damage to property can occur Insta...

Page 4: ...te mounting accessories chapter 5 2 Installation procedure 4 Function 4 1 Measuring principle The unit operates to the capacitive measuring principle By direct contact with the medium the unit detects...

Page 5: ...le detection of media with a very low dielectric constant e g oil The installation depth determines the level 5 3 The unit is virtually immune to almost any kind of build up on the probe The position...

Page 6: ...ssure rating of 0 5 bar E43006 flange plate 65 80 with clamp adapter aluminium pressure rating of 0 5 bar E43007 flange plate 54 52x52 with clamp adapter aluminium pressure rating of 0 5 bar E43016 mo...

Page 7: ...age supply to EN 50178 SELV PELV Disconnect power Connect the unit as follows 3 1 4 2 L L 1 4 3 Pin1 L Pin4 switching output NC Pin3 L Core colours of ifm sockets 1 BN brown 3 BU blue 4 BK black 7 Ope...

Page 8: ...rocess the yellow LED is lit con tinuously unit is in the operating mode sensor zone not covered 8 2 Set to the full vessel The empty adjustment is sufficient for media with a low dielectric constant...

Page 9: ...ation When the supply voltage has been applied the unit is in the operating mode It carries out its measurement and evaluation functions and switches the output Operation indication by LED LED Status...

Page 10: ...nstant medium 1 8 Max tank pressure bar 0 51 Housing materials PP GF orange TPE U Materials wetted parts PP Protection IP 65 IP 67 Protection class II Ambient temperature C 0 60 Medium temperature oil...

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