IFM Electronic Efector160 LI214 Series Bedienungsanleitung

Operating instructions

Binary level sensor

LI214x

704776/00 10/2010

Contents

1 Preliminary note � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3

1�1 Symbols used� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3

2 Safety instructions � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3

3 Functions and features � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4

3�1 Applications � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4

3�2 Restriction of the application area � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4

4 Function � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4

4�1 Measuring principle � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 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 elements � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 7

8 Settings� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8

8�1 Set to the empty vessel � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8

8�2 Set to the full vessel � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8

8�3 Lock / unlock the unit � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8

9 Operation � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 9

10 Maintenance, repair, disposal � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 9

11 Scale drawing � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 10

12 Technical data� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 10

1 Preliminary note

1.1 Symbols used

► Instructions

> Reaction, result

[…] Designation of pushbuttons, buttons or indications

→ Cross-reference

Important note

Non-compliance can result in malfunction or interference�

Information

Supplementary note�

2 Safety instructions

● Please read the product description prior to set-up of the unit� Ensure that 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�

● Installation, electrical connection, set-up, operation and maintenance of the

unit must only be carried out by qualified personnel authorised by the machine

operator�

● The unit complies with the standard EN 61000-6-4� The unit may cause radio

interference in domestic areas� If interference occurs, the user must take ap-

propriate remedial actions�

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�

The unit operates with radial detec-

tion characteristics� Therefore media

below the active zone are not detect-

ed� Despite different electrical proper-

ties media are only detected when

the active zone (A) is covered�



4.2 Features of the unit

● Automatic adjustment function to the medium to be detected by programming

buttons (→ chapter 8 Settings)� This allows reliable 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 of the switching level within the active zone can however change with

build-up�

● Operating and switching status indication via LED ring�

5 Installation

5.1 Installation location / environment

● Installation of the unit: from the top (→ 5�3)�

● The following minimum distances must be adhered to:

– Distance tank bottom - end of the probe: 10 mm�

– Distance metal tank wall - probe: 20 mm�

5.2 Mounting

The unit is mounted using a mounting clamp or an adapter� The following standard

mounting accessories are available:

Order no� Material

E43000 mounting clamp (for non-pressurised tanks)

E43001 flange plate 73-90 with clamp adapter (pressure rating of 0�5 bar)

E43002 welding adapter with clamp adapter (pressure rating of 0�5 bar)

E43003 mounting adapter G¾ with clamp adapter (stainless steel, pressure rating of 0�5 bar)

E43004 mounting adapter G1 with clamp adapter (stainless steel, pressure rating of 0�5 bar)

E43005 flange plate 100-125 with clamp adapter (aluminium, pressure 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 mounting clamp with mounting bracket (for non-pressurised tanks)

E43019 mounting adapter G¾ with clamp adapter (brass, pressure rating of 0�5 bar)

Further accessories on request�

5.3 Set the installation depth

MET

A = response level

H = tank height

L = probe length

L1 = installation depth

L2 = extension length

L3 = installation depth (min�: 60 mm)

M = height mounting adapter

MET = max� immersion depth

(Active zone) = 31 mm

S = height of the connection piece

► Select the installation depth L1 so that the MET zone is covered when the

response level A has been reached, that is:

L1 = (H - A) + MET + S�

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 to EN 50178, SELV, PELV�

► Disconnect power�

► Connect the unit as follows:

L+

Pin1 = L+

Pin4 = switching output/ NC

Pin3 = L-

Core colours of ifm sockets: 1 = BN (brown), 3 = BU (blue), 4 = BK (black)

7 Operating and display elements







1: LED ring green / yellow

● green: max� level reached / output open (OFF)

● yellow: max� level not reached / output closed (ON)

2: programming button OUT OFF

3: programming button OUT ON

8 Settings

Before the first set-up the empty adjustment must be carried out�

8.1 Set to the empty vessel

This adjusts the unit to both the empty vessel and the installation conditions (e�g�

the set installation depth)� Previous settings are deleted�

► Empty the tank until the medium is at least 20 mm below the end of the probe�

► Press the programming button (OUT ON) for at least 2 s�

> The yellow LED flashes slowly (approx� 1 Hz) (= unit is in

the adjustment mode)�

> After the adjustment process 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 (e�g�

oils)� For aqueous media the sensitivity must be optimised by a full adjustment�

The full adjustment does not change the settings of the empty adjustment�

► Fill the tank until the active zone of the unit is covered�

► Press the programming button (OUT OFF), keep it

pressed for at least 6 s�

> The yellow LED flashes, after 6 s rapidly (approx� 2 Hz),

(= device is in the adjustment mode)�

> After adjustment the green LED is lit continuously (unit is

in the operating mode, sensor zone covered)�

8.3 Lock / unlock the unit

The unit can be locked electronically to prevent unintentional settings�

Locking

► Press both setting buttons simultaneously for 10 s in the operating mode�

> The LED flashes green�

> After the time (> 10 s) has elapsed, the colour of the LED changes from green

to yellow (flashing) and the unit is locked�

Unlocking

► Press both setting buttons simultaneously for 10 s in the operating mode�

> The LED continues to indicate the current operating status (no reaction of the

LED)�

> After the time (> 10 s) has elapsed, the LED flashes green and the unit is

unlocked�

On delivery: unlocked�

9 Operation

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 / function

Green unit ready for operation, sensor zone covered (output open (OFF))

Yellow unit ready for operation, sensor zone not covered (output closed (ON))

10 Maintenance, repair, disposal

Recommended maintenance:

► Check the probe for build-up from time to time, clean it in case of strong soiling�

After removal of the unit or a change of media with dielectric constants that

differ greatly (e�g� oil / water) another adjustment should be carried out�

It is not possible to repair the unit�

After use dispose of the unit in an environmentally friendly way in accordance with

the applicable national regulations�

11 Scale drawing







 











Dimensions in mm

1: programming buttons

A: active zone (31 mm)

L: probe length in mm: 132 (LI2141) 273 (LI2142) 481 (LI2143)

12 Technical data

Operating voltage [V] ��10 �� 36 DC

Current rating [mA] ��200

Short-circuit protection (pulsed); protected against reverse polarity and overload

Current consumption [mA] ��< 22

Voltage drop [V] ��< 2�5

Dielectric constant 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 [°C] ��0��65

Medium temperature water and media similar to water [°C] ��0��35

Storage temperature [°C] ��-25 �� 80

Shock resistance [g] �� 12 (DIN EN 60068-2-29, 11 ms)

Vibration resistance [g] ��5 (DIN EN 60068-2-6, 10��2000 Hz)

EMC ��EN 61000-6-2: 2005 + Corr� 2005

��EN 61000-6-4: 2007

1) when mounted using pressure-resistant mounting accessories (→ 5�2)

More information at www�ifm�com

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