Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
Page 3
Vibracon LVL-B1, LVL-B2
Function and system design
Function and system design
Measuring principleA piezoelectric drive excites the vibrating rod of Vibracon LVL-B1, LVL-B2 to its resonance
frequency. If medium covers the vibrating rod, the rod's vibrating amplitude changes (the vibration
is damped). Vibracon’s electronics compare the actual amplitude with a target value and indicates
whether the vibrating rod is vibrating freely or whether it is covered by medium.
A
t
A = amplitude
Measuring systemVibracon LVL-B* is a compact electronic switch.
Thus, the entire measuring system only consists of:
• Vibracon LVL-B1 or LVL-B2 with FEM 22 (E5) or FEM 24 (WA) electronic insert
• a supply point and
• the connected control systems, switching units, signalling systems (e. g. lamps, horns, PCS,
PLC, etc.)
X
E
A
t
E
X
…
+–
U –
Date of issue09/29/05188839
Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
U –
~
3
Page 4
Cable specifications
Cable specifications
Use a shielded cable in the event of strong electromagnetic radiation.
Immunity to temperature change of connec ti ng cable
The connecting cables must withstand the ambient temperature +15 K.
Cable entriesM20 x 1,5 (cable gland); ½ NPT; G½
Input
Measured variableLevel (according to the mounting location and the overall length)
Vibracon LVL-B1, LVL-B2
Measuring range
(application)
Input signalProbes covered
Measuring frequency700 Hz ... 800 Hz
The measuring range depends on the mounting location of Vibracon LVL-B* and the length of the
pipe extension selected. The pipe extension is available in the following lengths:
500 mm, 1000 mm, 1500 mm, 20 in, 40 in, 60 in.
! small amplitude
Probe not covered
! large amplitude
Output
Galvanic isolationFEM 22 (E5): between sensor and power supply
FEM 24 (WA): between sensor, power supply and load
Switch behaviourbinary
Power-on behaviourWhen switching on the power supply the output is set to "signal on alarm".
After a maximum of 3 s it switches to the correct output signal.
Fail-safe modeMinimum/maximum quiescent current safety can be switched at electronic insert.
Max. = maximum safety:
When the vibrating rod is covered, the output switches in the direction of the signal on alarm.
Used for overfill protection for example.
Min. = minimum safety:
When the vibrating rod becomes exposed, the output switches in the direction of the signal on
alarm.
Used for empty running protection for example.
Switching delay0.5 s when the sensor is covered, 1 s when the sensor is exposed
Ex specificationsFEM 22 (E5), FEM 24 (WA):
Explosion protection for explosive dust-air mixtures: Dust-Ex, DIP
4
Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
Date of issue09/29/05188839
Page 5
Vibracon LVL-B1, LVL-B2
Electronic insert FEM 22 (E5)
Electrical connectionThree-wire direct current connection
Preferred in conjunction with
programmablelogic controllers (PLC),
DI modules as per EN 61131-2.
Positive signal at electronics switch output
(PNP); Output blocked at level limit.
Electronic insert FEM 22 (E5)
FEM 22 (E5)
13
F
0.5 A
2
(+)
R
e. g.
Relay
PLC
–
L+ L–
…
U – 10 V ... 45 V (DC)
Output signal
I
L
< 100 µA
= load current
(switched throuht)
= residual current
(blocked)
Safety
connection
Max.
LevelOutput signalLEDs
L++
1 3
< 100 µA
1 3
= lit
= not lit
Min.
L++
1 3
< 100 µA
1 3
Signal on alarmOutput signal on power failure or in the event of device failure: < 100 µA
Connectable load• Load switched via transistor and separate PNP connection
• Load current: max. 45 V (cyclical overload and short-circuit protection),
continuous max. 350 mA
• Capacitive load: max. 0.5 µF for 45 V, max. 1.0 µF for 24 V
• Residual voltage: < 3 V (for transistor switched through)
green yellow
I
L
I
L
Power supplyDC voltage 10 V … 45 V
Ripple max. 5 V, 0 Hz … 400 Hz
Current consumption max. 15 mA
Power consumption max. 0.68 W
Reverse polarity protection
Separation voltage: 2.2 kV
Overvoltage protection: overvoltage category III
Date of issue09/29/05188839
Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
5
Page 6
Electronic insert FEM 24 (WA)
Electronic insert FEM 24 (WA)
Electrical connectionUniversal current connection with relay output
Power supply:
Please note the different voltage rangesfor AC
and DC.
Output:
When connecting a device withhigh inductance,
provide a spark arresterto protect the relay
contact.
A fine-wire fuse (depending on theload
connected) protects the relaycontact in the event
of a short-circuit.
Both relay contacts switch simultaneously.
DPDT (double pole double throw)
* When jumpered, therelay output works with
NPN logic.
** see below "Connectable load"
F
0.5 A
Vibracon LVL-B1, LVL-B2
FEM 24 (WA)
12345678
*
!
Note!
Please note the different voltage ranges for
direct and alternating current.
U ~ 19 V ... 253 V (AC)
Output signal
= relay energised
Safety
connection
= relay de-energised
= lit
Max.
= not lit
Min.
Signal on alarmOutput signal in event of power failure: relay de-energised
NO
C
a
u
L1
NL–PE
L+
(Ground)
…
LevelOutput signalLEDs
**
U – 19 V ... 55 V (DC)
435768
435768
435768
435768
NC
r
…
NO
C
a
u
**
green yellow
NC
r
Connectable load• Loads switched via 2 floating change-over contacts.
• I~ max. 6 A, U~ max. 253 V; P~ max. 1500 VA, cos ϕ = 1, P~ max. 750 VA, cos ϕ > 0.7;
• I– max. 6 A to 30 V, I– max. 0.2 A to 125 V.
• The following applies when connecting a functional extra-low voltage circuit with double
insulation as per IEC 1010: sum of voltages of relay output and power supply max. 300 V
Power supplyAlternating voltage 19 V… 253 V, 50/60 Hz or DC voltage 19 V … 55 V
Power consumption max. 1.3 W
Reverse polarity protection
Separation voltage: 2.2 kV
Overvoltage protection: overvoltage category III
6
Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
Date of issue09/29/05188839
Page 7
Vibracon LVL-B1, LVL-B2
Operating conditions
Installation instructionsMounting location
e. g. storage or buffer container
Orientation
Operating conditions
*
**
Horizontal installation/vertical installation
*with protective cover (to be provided by customer)
** with protecting tube (to be provided by customer)
Environment
Ambient temperature
range
Storage temperature-40 °C ... 85 °C (233 K ... 358 K)
Climate classClimatic protection as per DIN IEC 68 part 2-38, fig. 2a
Degree of protectionIP66/IP67, Nema 4x
Vibration resistanceDIN 60068-2-27/IEC 68-2-27: shock 30 g, vibration 0.01 g
Electrical safetyIEC 61010, CSA 1010.1-92, FM3600
Electromagnetic
compatibility
-40 °C ... 70 °C (233 K ... 343 K)
Interference emission to EN 61326, Electrical Equipment Class B
Interference immunity to EN 61326, annex A (Industrial)
2
/Hz
Date of issue09/29/05188839
Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
7
Page 8
Process
Vibracon LVL-B1, LVL-B2
Process
EnvironmentPermitted ambient temperature T
container:
T
a
T
p
Thermal shock resistancemax. 120 K
Limiting medium pressure
range
-1 bar ... 25 bar
Maximum working pressure (MWP)
25 bar
Burst pressure
100 bar
at housing depending on the medium temperature Tp in the
Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
Page 11
Vibracon LVL-B1, LVL-B2
Display elements
!
Human interface
Human interface
Note!
The switch settings in the following graphics are in the as-delivered state.
FEM 22 (E5)
Operating elements of
electronic inserts
One green LED: operation
One yellow LED: electronic switch closed
FEM 24 (WA)
One green LED: operation
One yellow LED: contact closed
(relay energised or fed with current)
MAX
MIN
U 10...45V DC
I m ax : 350 mA
-
L+L
123
~
U
–
19... 55V DC
19... 253V AC
L1 N
12
FEM22
DC PNP
MAX
MIN
1
3
MAX
MIN
35
4
345678
FEM24
347568
(Factory setting)
one switch for safety mode
MAX – overfill protection
MIN – dry running protection
one switch for bulk density/density setting
" 400 g/l (high bulk density)
# 200 g/l (low bulk density)
Sediment detectionDetection of solids under water
HO
2
The system does not detect coverage by liquids
similar to water.
Date of issue09/29/05188839
Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
11
Page 12
Certificates and approvals
Certificates and approvals
Vibracon LVL-B1, LVL-B2
CE mark, declaration of
conformity
Ex approvalATEX approval in preparation
Type of protectionSee "Ordering information" as of page 13 and "Supplementary documentation" on page 15.
Other standards and
guidelines
The instrument is designed to meet state-of-the-art safety requirements, has been tested and left
the factory in a condition in which it is safe to operate.
The instrument complies with the applicable standards and regulations as listed in the EC
declaration of conformity and thus complies with the statutory requirements of the EG directives.
Pepperl+Fuchs confirms the successful testing of the instrument by affixing to it the CE mark.
Your Pepperl+Fuchs sales centre can provide you with information on the Ex versions which can
currently be delivered.
All explosion protection data are given in a separate documentation (see "Supplementary
documentation") which is available upon request.
Other standards and guidelines that were taken into consideration in designing and developing
Vibracon LVL-B1, LVL-B2:
• Low Voltage Directive (73/23/EEC)
• DIN EN 61010 part 1, 2001
Protection Measures for Electrical Equipment for Measurement, Control, Regulation and
Laboratory Procedures
Part 1: general requirements
• EN 61326
Electrical Equipment for Measurement, Control and Laboratory Use
EMC requirements
12
Date of issue09/29/05188839
Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
Page 13
Vibracon LVL-B1, LVL-B2
Ordering information
Product structure LVL-B1
LVL–B1–––
Electrical output
B3 FEM 20 B, AS-interface-Bus
E5 FEM 22, PNP 3-wire, 10 V DC ... 45 V DC
WA FEM 24, relay, DPDT, 19 V AC ... 253 V AC, 19 V DC ... 55 V DC
Housing, cable entry
A6 aluminium housing F18, IP66/IP67, Nema 4x, cable gland M20
A7 aluminium housing F18, IP66/IP67, Nema 4x, ¾ NPT
A8 aluminium housing F18, IP66/IP67, Nema 4x, entry G½A
Cpolyester housing F16, IP66/IP67, Nema 4x, cable gland M20
Qpolyester housing F16, IP66/IP67, Nema 4x, ½ NPT
Process connection
N3thread 1¼ NPT, ANSI, 1.4435/316L
N5thread 1½ NPT, ANSI, 1.4435/316L
R3thread R1, DIN 2999, 1.4435/316L
R5thread R1½, DIN 2999, 1.4435/316L
Design
B1 compact design
XXspecial version
Ppolyester housing F16, IP66/IP67, Nema 4x, entry G½A
Certificates
NA version for non-hazardous areas
EX ¬ II 1/3 D
FS FM, DIP + CSA DIP, CI. II, III, Div. 1 + 2, Gr. E–G
CG CSA, General Purpose
Optional equipment
Awith optional equipment
Ordering information
Product structure LVL-B2
LVL–B2––
Electrical output
B3 FEM 20 B, AS-interface-Bus
E5 FEM 22, PNP 3-wire, 10 V DC ... 45 V DC
WA FEM 24, relay, DPDT, 19 V AC ... 253 V AC, 19 V DC ... 55 V DC
Housing, cable entry
A6 aluminium housing F18, IP66/IP67, Nema 4x, cable gland M20
A7 aluminium housing F18, IP66/IP67, Nema 4x, ¾ NPT
A8 aluminium housing F18, IP66/IP67, Nema 4x, entry G½A
Cpolyester housing F16, IP66/IP67, Nema 4x, cable gland M20
Qpolyester housing F16, IP66/IP67, Nema 4x, ½ NPT
Ppolyester housing F16, IP66/IP67, Nema 4x, entry G½A
Sensor length
2500 mm
31000 mm
41.500 mm
620 in
740 in
860 in
Process connection
N3thread 1¼ NPT, ANSI, 1.4435/316L
N5thread 1½ NPT, ANSI, 1.4435/316L
R3thread R1, DIN 2999, 1.4435/316L
R5thread R1½, DIN 2999, 1.4435/316L
• Emitted interference to EN 61326, class B equipment
• Interference immunity to EN 61326, annex A (industrial sector) and NAMUR EMC
recommendation (NE 21)
Directive 94/9/EC (ATEX)
Directive 73/23/EC (Low Voltage Directive) EN 61010-1
Supplementary documentation
Supplementary
informations
EC-Type Examination Certificate, Statement of Conformity, Declaration of Conformity and
instructions have to be observed. For information see www.pepperl-fuchs.com.
Date of issue09/29/05188839
Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49 621 776-0 • USA +1 330 4253555 • Singapore +65 67799091 • Internet http://www.pepperl-fuchs.com
15
Page 16
Notes
Vibracon LVL-B1, LVL-B2
16
Date of issue09/29/05188839
Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
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Page 17
Vibracon LVL-B1, LVL-B2
Notes
Date of issue09/29/05188839
Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
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17
Page 18
Notes
Vibracon LVL-B1, LVL-B2
18
Date of issue09/29/05188839
Subject to reasonable modifications due to technical advances.Copyright Pepperl+Fuchs, Printed in Germany
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Page 19
With regard to the supply of products, the current issue of the following document is applicable: The General Terms of
Delivery for Products and Services of the Electrical Industry, published by the Central Association of the
"Elektrotechnik und Elektroindustrie (ZVEI) e.V." including the supplementary clause: "Erweiterter Eigentumsvorbehalt".
We at Pepperl+Fuchs recognize a duty to make a contribution to the future,
For this reason, this printed matter is produced on paper bleached without the use of chlorine.
Page 20
PROCESS AUTOMATION
SIGNALS FOR THE WORLD OF AUTOMATION
For half a century Pepperl+Fuchs has continually provided new impetus to the world of automation. We develop, manufacture and market electronic sensors and interface modules through our worldwide network. Our global presence and
highly flexible production and service organisations enable us to offer you complete individual solutions – right where you
need us! We know what we’re talking about – because today Pepperl+Fuchs is the company with the largest selection of
industrial sensors technology in the World – serving a very broad spectrum of applications. Our signals move the World.