VEGA TROL10Ex1 User Manual
VEGATROL 10 Ex 1
VEGATOR 526W Ex
on
TIB • Technical Information • Operating Instructions
Fail safe overfill
protection for
pressurized vessels
storing liquid gas
Approved acc. to the
VdTÜV-information
"Overfill protection" 100
no. TÜV.ÜS.94-32
liquid gas PN 25
Corresponds to the
requirements to
component tested overfill
protections of TRB 801,
no. 25
Corresponds to the
requirements of
DIN V 19250 AK 5
Conformity certificates
PTB-no. Ex-93.C.4015
BVS-no. 93.C.2015 X
VEGA Grieshaber KG
Postfach 11 42
D-77757 Schiltach
Phone 0 78 36 / 50 - 0
Fax 0 78 36 / 50 201
Contents
1 Introduction
1.1 Contents of the instruction manual .....................................................................................................................3
1.2 Safety information ...............................................................................................................................................3
1.3 Approvals ............................................................................................................................................................3
2 Technical Information
2.1 Product description .............................................................................................................................................4
2.2 Configuration of an overfill protection..................................................................................................................5
2.3 Technical data .....................................................................................................................................................6
2.3.1 Signal conditioning instrument VEGA TOR 526 W Ex ..............................................................................6
2.3.2 Sensor VEGASWING 83 W5 Ex with oscillator E86 Ex...........................................................................8
2.4 Dimensional drawings ......................................................................................................................................... 8
2.4.1 VEGASWING 83 W5 Ex .......................................................................................................................... 8
2.4.2 Flanges .................................................................................................................................................... 9
2.4.3 Signal conditioning instrument VEGA TOR 526 W Ex ..............................................................................9
2.5 Electrical connection ......................................................................................................................................... 10
2.5.1 Signal conditioning instrument VEGA TOR 526 W Ex ............................................................................10
2.5.2 Connection examples for overvoltage arresters.....................................................................................11
2.6 Mounting instructions and regulations .............................................................................................................. 12
Contents
3 Mounting and set-up
3.1 Mounting ........................................................................................................................................................... 13
3.2 Set-up................................................................................................................................................................13
3.3 Operation .......................................................................................................................................................... 14
4 Supplement
4.1 Fault signals ......................................................................................................................................................14
4.2 Calculation information for sensor length..........................................................................................................15
4.3 General instructions for the use of overfill protection ........................................................................................16
2
VEGATROL 10 Ex 1
1 Introduction
1 Introduction
1.1 Contents of the instruction manual
This Technical Information / Operating Instructions
(T.I.B.) contains information for correct
- installation
- connection
- set-up
for the fail-safe-protection VEGATROL 10 Ex 1.
This TIB is supplied as part of the order. Knowledge of the
contents is important for correct operation of the
instrument. This TIB accompanies the product and is
addressed to technical staff which is trained or has
knowledge of the use of level measurement and control
equipment.
1.2 Safety information
The instrument must only be operated as described in this
TIB. Please note that other action can cause damage for
which VEGA does not take liability.
1.3 Approvals
Ex-Zone 1
The system sensor VEGATROL 10 is approved for the use
in hazardous areas zone 1. In such cases the regulations
and special conditions of the conformity certificate PTB-no.
Ex-93.C.4015 and BVS-no. 93.C.2015 X must be
observed.
VdTÜV
VEGATROL 10 is approved acc. to VdTÜV-information
"Overfill protection" 100 as overfill protection in stationary
storage vessels in liquid gas plants of groups A, B, C and
D (approval no. TÜV.ÜS.94-32).
This approval is also valid for storage vessels in
distribution plants.
DIN
The overfill protection of VEGATROL 10 corresponds to
the requirements of DIN V 19250, class 5.
TRB
VEGATROL 10 corresponds to the requirements on
component tested overfill protections acc. to TRB 801,
no. 25.
Overfill protection in vessels up from group C
Also in case where TRB 801, no. 25, item 6.1.4.2 requires
two independent overfill protections, one VEGATROL 10
is sufficient to meet with this requirement.
VEGATROL 10 Ex 1
3
2 Technical Information
2 T echnical Information
2.1 Product description
General
The described fail-safe overfill protection VEGA TROL 10
consists of a VEGASWING 83 W5 Ex vibrating level switch
and VEGA TOR 526 W Ex signal conditioning instrument.
The application range comprises stationary vessels acc. to
the pressure vessel regulations for storing liquid gas acc.
to DIN 51 622:
- in individual vessel plants
- in liquid gas plants
- in distribution plants
- in plants with several vessels
each of group A, B, C and D.
When used in distribution plants up from group C min.
separate overfill protections must be installed acc. to the
requirement of TRB 801, no. 25. Even in these cases
VEGATROL 10 is sufficient due to the VdTÜV-approval to
meet with the TRB-requirement.
In plants with several vessels VEGA TROL 10 can be used
as continuous monitoring and locking system.
Function
The level is detected by a vibrating level switch
VEGASWING. Its tuning fork is piezoelectrically energized
and vibrates at its mechanical resonance frequency. A
second piezoelectric element measures this resonance
frequency. If the tuning fork is covered by the liquid gas,
the resonance frequency changes proportional to the
degree of covering. The oscillator in VEGASWING detects
continuously the resonance frequency and converts the
value into a current to the signal conditioning instrument.
When the switch point is reached an erratic increase of the
current signal is triggered. The level relay in the signal
conditioning instrument de-energizes.
two
one
Fail-safe / Self-monitoring
A special feature of the overfill protection of VEGATROL
10 is the integral self-monitoring. It is based on a redundant microprocessor system in the signal conditioning
instrument and includes the whole measuring chain from
the tuning fork via the oscillator, the two-wire line as well
as the signal conditioning instrument.
The self-monitoring includes two routines:
- the permanent monitoring
- the cyclical selftest.
During the permanent monitoring the signal conditioning
instrument causes the oscillator of the sensor to trigger a
test cycle in 960 msec. cycle. Defined test signals are
transmitted via the two-wire line to the signal conditioning
instrument. Possible failures in the sensor electronics as
well as line break, short-circuit and mechanical damage on
the tuning fork are signalled via these test signals. During
the cyclical selftest security relevant components and
procedures (e.g. level relay, CPU, memory, time reaction)
are checked in the signal conditioning instrument in a very
tough time pattern. The function test of the level relays is
made without interruption of the circuit of connected
systems.
If during the self-monitoring a failure is detected, the level
relays and the fail safe relay de-energize.
Due to the above mentioned measures a reliable and
correct function of the overfill protection is ensured without
any staff involved for control tasks.
4
VEGATROL 10 Ex 1
2 Technical Information
2.2 Configuration of an overfill protection
Storage vessels in liquid gas plants of group A, B, C and D
The overfill protection VEGATROL 10 for a storage vessel consists of:
- VEGASWING 83 W5 Ex level switch with integral oscillator E86 Ex
- VEGATOR 526 W Ex signal conditioning instrument
Additional instruments:
- continuous level measuring system
- overvoltage arresters etc. acc. to the requirements of the system.
Version I: cylindrical tank
VEGASWING
Ex-Zone 1
Version II: spherical tank
VEGASWING
Ex-Zone 1
two-wire line
(intrinscially safe
circuit)
two-wire line
(intrinsically safe
VEGATOR 526 W Ex
VEGATOR 526 W Ex
on
!
circuit)
Not Ex-area
Overifll
protection
VEGATOR 526 W Ex
VEGATOR 526 W Ex
on
!
Overfill
protection
VEGATROL 10 Ex 1
Not Ex-area
5
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