Level and Pressure
Operating Instruction
VEGASWING 81, 83 fail safe
and signal conditioning instrument VEGATOR 526 Ex
VEGATOR 526 Ex
on
Contents
Safety information ........................................................................ 2
1 Product description
1.1 Function and configuration .................................................. 3
1.2 Approvals ............................................................................. 5
1.3 Recurring test acc. to WHG ................................................. 6
1.4 Technical data and dimensions ........................................... 7
2 Mounting
2.1 VEGASWING ...................................................................... 13
3 Electrical connection
3.1 VEGASWING ...................................................................... 18
3.2 Connection plan VEGATOR 526 Ex ................................... 19
4 Set-up
4.1 VEGASWING 8… W5␣ Ex.C................................................. 22
4.2 Signal conditioning instrument VEGATOR 526 Ex ............ 23
Contents
5 Diagnosis
5.1 Failure removal ................................................................... 26
Safety information
The described module must only be installed
and operated as described in this operating
instruction. Please note that other action can
cause damage for which VEGA does not take
responsibility.
2 VEGASWING 81 W5 Ex.C, 83 W5 Ex.C fail safe
Product description
1 Product description
1.1 Function and configuration
VEGASWING 81␣ W5␣ Ex.C and 83␣ W5␣ Ex.C fail
safe vibrating level switches detect levels of
liquids with a viscosity of 0,2 mPa␣ s to
10.000␣ mPa␣ s and a density ≥␣ 0,5␣ g/cm3. The
modular construction enables the use in
vessels, tanks and pipelines. Typical
applications are overfill protections according
to AK5.
Due to the simple and rugged measuring
system, VEGASWING can be used virtually
unaffected by the chemical and physical
features of the liquid. It operates also under
arduous conditions such as turbulences, air
bubbles, foam generation, build-up and
changing medium.
With the mechanical connections thread and
flange, VEGASWING 81␣ W5␣ Ex.C or
83␣ W5␣ Ex.C can be used in manifold
applications.
For the use in very aggressive products,
Hastelloy C4 and ECTFE (halar), Säkaphen
and enamel-coatings are used for
VEGASWING 81 and 83.
VEGASWING 83 F… can be coated with
enamel or up to 1200 mm and Säkaphen up to
4␣ m tube length.
Function
The tuning fork is piezoelectrically energized
and vibrates at a resonance frequency of
approx. 400␣ Hz. A second piezoelectrical
element measures the resonance frequency of
the tuning fork. When the tuning fork is
covered with the medium, the resonance
frequency changes. This frequency change is
continuously detected by the integral oscillator
and converted into a switching command by
the connected signal conditioning instrument.
With a mode switch you can determine the
switching mode (overfill protection or
protection against dry running of pumps).
Note that VEGASWING 8…␣ W␣ Ex.C only meets
the fail safe requirements in mode A (overfill
protection).
Fail safe / Self-monitoring
A special feature of this instrument
configuration VEGATOR 526␣ Ex with
VEGASWING 81␣ W5␣ Ex.C or 83␣ W5␣ Ex.C is the
integral self-monitoring. It is based on a redundant microcomputer system in the signal
conditioning instrument and includes the
complete measuring chain from the tuning fork
via the oscillator, the two-wire line as well as
the signal conditioning instrument (see also
“1.3 Recurring test acc. to WHG“).
For medium temperatures of more than 100°C
to 130°C VEGASWING 81␣ W5␣ Ex.C and
83␣ W5␣ Ex.C must be equipped with a
temperature adapter.
VEGASWING 81 W5 Ex.C, 83 W5 Ex.C fail safe 3
The self-monitoring includes two routines:
- the permanent monitoring
- the cyclical self-test.
During the permanent monitoring the signal
conditioning instrument induces the oscillator
of the sensor to carry out a test cycle in
960␣ msec-cycle. Hence defined test signals
are transmitted via the two-wire line to the
signal conditioning instrument. Probable errors
in the sensor electronics as well as line break,
shortcircuit and mechanical damages on the
fork are signalled via these test signals.
Product description
During the cyclical self-test safety relevant
components and procedures (e.g. level relay,
CPU) are checked in a very narrow time
pattern in the signal conditioning instrument.
The fault monitoring of the level relay is made
without interruption of the circuit of connected
systems.
The integral fault monitoring detects:
- interruption of the connection line to the
piezoelements
- strong abrasion on the tuning fork
- break or damage of the tuning fork
- vibration failure
- all safety relevant components (sensor and
signal conditioning instrument) are
permanently monitored (drift, component
failure, time failure etc.)
- meets requirement class 5 (AK5) acc. to
DIN␣ V␣ 19␣ 250
- two-wire line on line break and shortcircuit.
Overfill protection with VEGASWING 83 W5 Ex.C
If a so called failure is determined or in case
of voltage failure, the electronics takes a
defined switching condition, i.e. the failure is
signalled via a defined current to the
connected signal conditioning instrument
VEGATOR 526␣ Ex and the level and fail safe
relays de-energize.
Configuration
A measuring system consists of:
- a VEGASWING with oscillator
SWING␣ E86␣ Ex
- a signal conditioning instrument VEGATOR
526 Ex
- external instruments switched by VEGATOR
(signallers, horns etc.).
Ex-Zone 1
VEGASWING
Two-wire line
4 VEGASWING 81 W5 Ex.C, 83 W5 Ex.C fail safe
(intrinsically
safe circuit)
Not Ex-area
VEGATOR 526 Ex
VEGATOR 526 W Ex
on
Relay for
max. signal
Relay for fault
!
signal
Product description
1.2 Approvals
VEGASWING 81 W5␣ Ex.C and 83␣ W5␣ Ex.C fail
safe are certified acc. to CENELEC Exprotective regulations. An approval for the use
in PTB Zone 0 in the scope of ElexV
(Germany) is available.
VEGASWING 81␣ W5␣ Ex.C and 83␣ W5␣ Ex.C fail
safe are approved as part of an overfill
protection acc. to Water Resources Law
(WHG).
Overfill protection acc. to Water Resources Law (WHG)
Level detection with fault monitoring
Instrument Oscillator Level switch General type
VEGASWING SWING E86 Ex 526 Ex Z-65.11-31
81 W5 Ex.C,
83 W5 Ex.C
Level measuring instruments for the use in hazardous areas PTB Zone 0 (Germany)
Level detection with fault monitoring
Instrument Oscillator Conformity Level switch Conformity
certificate VEGATOR certificate
PTB-no. VEGATOR BVS-no.
For these applications, the appropriate legal
documents must be noted (general type
approval and conformity certificates). These
are supplied with the appropriate instrument.
DIN
The overfill protection meets requirement
class 5 (AK5) acc. to DIN␣ V␣ 19␣ 250.
VEGATOR approval
VEGASWING SWING Ex-97.D.2046 526 Ex 93.C.2015 X
81 W5 Ex, E86 Ex
83 W5 Ex
Level measuring instruments acc. to CENELEC for the use in hazardous areas
Level detection with fault monitoring
Instrument Oscillator Conformity Level switch Conformity
VEGASWING SWING Ex-97.D.2046 526 Ex 93.C.2015 X
81 W5 Ex, E86 Ex
83 W5 Ex
VEGASWING 81 W5 Ex.C, 83 W5 Ex.C fail safe 5
certificate VEGATOR certificate
PTB-no. BVS-no.
Product description
1.3 Recurring test acc. to WHG
Acc. to the general type approval Z-65.11-31 the sensor must neither be removed nor controlled
for the annual recurring test acc. to WHG.
Due to the certified fail-safe condition of the overfill protection (AK5 acc. to DIN␣ V 19␣ 250) the
recurring test for the instrument and the transmitter (signal conditioning instrument) is not
required. Hence the test of the overfill protection is reduced to the function test of the
connected system parts. This can be made, e.g. by interruption of the circuit to the signal or
control system.
Note the instruction under “3.4 Connection plan VEGATOR 526 Ex“.
6 VEGASWING 81 W5 Ex.C, 83 W5 Ex.C fail safe
Product description
1.4 Technical data and dimensions
VEGASWING 81 W5 Ex.C and 83 W5 Ex.C
Housing
Housing material PBT (Polyester)
Protection IP 66
Cable entry 1 x Pg 13,5
Terminals max. 1 x 1,5 mm
Mechanical connection
Thread G 1 A or 1“ NPT
- material 1.4571 (V4A) or Hastelloy C4 (2.4610)
Flanges DIN and ANSI from DN 50
- material 1.4571, 1.4571 with Hastelloy C4 plated
DN 50 PN 40 steel enamelled
Tuning fork
Material 1.4581, Hastelloy C4, Hastelloy C4 enamelled
1.4581 with Säkaphen or ECTFE plated
Extension tube (VEGASWING 83 W5 Ex)
Material 1.4571, Hastelloy C4, Hastelloy C4 enamelled
1.4571 with Säkaphen or ECTFE plated
Length
- 1.4571, Hastelloy C4 200 mm … 4000 mm
- Hastelloy C4 enamelled 200 mm … 1200 mm
- 1.4571, Halar 200 mm … 1200 mm
- 1.4571, Säkaphen 200 mm … 4000 mm
2
Weight
Plastic housing approx. 1,5 kg
Tube extension approx. 0,11 kg/m (VEGASWING 83 W5 Ex.C)
Ambient conditions
Ambient temperature on housing -40°C … +65°C
Storage and transport temperature -40°C … +70°C
Medium temperature -40°C … +100°C
Medium temperature with temperature
adapter of 1.4571 (option) -40°C … +130°C
Operating pressure
Operating pressure max. 25 bar
(VEGASWING 83 W5 Ex.C: with locking
ARV2EX0.C… to 4 bar, otherwise unpressurized)
Test pressure max. 40 bar
VEGASWING 81 W5 Ex.C, 83 W5 Ex.C fail safe 7
Product description
Medium
Viscosity
- dynamic 0,2 … 10.000 mm2/s
Density 0,5 or 1,0 g/cm3 changeable
Function
Mode A/B-mode via signal conditioning instrument
Integration time approx. 0,5 s
Meas. frequency approx. 400 Hz
CE-conformity
VEGASWING 81 W5 Ex.C and 83 W5 Ex.C vibrating level switches meet the protective
regulations of EMVG (89/336/EWG) and NSR (73/23/EWG). The conformity has been judged
acc. to the following standards:
EMVG Emission EN 50 081 - 1: 1992
Susceptibility EN 50 082 - 2: 1992
NSR EN 61 010: 1993
A: Max. detection, overfill protecion
(fail␣ safe)
B: Min. detection, dry run protection
(not fail safe)
Approvals VEGASWING 8… W5 Ex.C
Water Resources Law (WHG)
Approval as overfill protection acc. to WHG
Ambient temperature on the housing -40°C … +65°C
Medium temperature -40°C … +100°C
- with temperature adapter to 130°C
Operating pressure max. 25 bar
(general type approval Z-65.11-31)
Oscillator
Two-wire output (SWING E86 Ex)
Supply voltage 12 … 18,9 V DC (via VEGA-signal conditioning
Output two-wire output
Required signal conditioning instrument VEGATOR 526 Ex
Current consumption 4 … 25 mA
Protection class II
Overvoltage category II
Modes definition via signal conditioning instrument
Classification EEx ia IIC T4
8 VEGASWING 81 W5 Ex.C, 83 W5 Ex.C fail safe
instrument VEGATOR 526 Ex)
Product description
Signal conditioning instrument VEGATOR 526 Ex
General
Series module unit for carrier BGT 596 Ex
Dimensions W = 50,8 mm (10 TE), H = 128,4 mm, D = 162 mm
Weight approx. 440 g
Ambient conditions
Ambient temperature -20°C … +60°C
Storage and transport temperature -40°C … +70°C
Power supply
Operating voltage UN = 24 V AC (20 … 28 V AC); 50/60 Hz
Power consumption approx. 11 VA or 8 W
Electrical connection multipoint connector DIN 41 612,
Electrical protective measures
Protection class II (in housing type 589-10 Ex)
Overvoltage category II
Protection
- mounted in housing type 589… IP 30
Protection
(mounted into carrier
BGT 596 Ex with Ex-module)
- front side (completely equipped) IP 30
- upper and lower side IP 20
- wiring side IP 00
UN = 24 V DC (16 … 60 V DC
series F (d, z) 32-pole
Inputs
Number 1
Data transmission analogue, 4 … 20 mA
Current limitation 24 mA (permanently shortcircuit proof)
Sensor supply voltage approx. 15 … 18 V DC
Connection line 2-wire (screened)
Resistance per conductor max. 35 Ω
Function
Integration time
- switch on delay 0,5 s
- switch off delay 1,0 s
VEGASWING 81 W5 Ex.C, 83 W5 Ex.C fail safe 9
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