VEGA SON51P User Manual
Operating Instructions
PROF I
BUS
PROCESS FIELD BUS
VEGASON 51P … 53P (Profibus PA)
Level and Pressure
Contents
Safety information ........................................................................ 3
Note Ex area ................................................................................ 3
1 Product description
1.1 Function ................................................................................. 4
1.2 Application features ............................................................. 5
1.3 Profibus output signal .......................................................... 5
1.4 Adjustment ............................................................................ 6
2 Types and Profibus configuration
2.1 Survey................................................................................. 11
2.2 Bus configuration ............................................................... 13
3 Technical data
3.1 Technical data ..................................................................... 16
3.2 Approvals ........................................................................... 19
3.3 Data format of the output signal ........................................ 20
3.4 Dimensions ......................................................................... 21
Contents
4 Mounting and installation
4.1 General installation instructions ........................................ 23
4.2 Measurement of liquids ..................................................... 24
4.3 Measurement of solids ...................................................... 26
4.4 Socket extensions ............................................................. 28
4.5 Flow measurement ............................................................. 29
4.6 False echoes ...................................................................... 30
4.7 Incorrect mounting ............................................................. 32
2 VEGASON 51P … 53P
Contents
5 Electrical connection
5.1 Connection – Connection cable – Screening ................... 35
5.2 Sensor address ................................................................. 38
5.3 Connection of the sensor .................................................. 40
5.4 Connection of the external indicating instrument ............ 41
6 Setup
6.1 Adjustment media .............................................................. 42
6.2 Adjustment with VVO ......................................................... 43
6.3 Sensor adjustment with the adjustment module
MINICOM ............................................................................ 65
7 Diagnostics
7.1 Simulation ............................................................................ 72
7.2 Error codes ........................................................................ 72
8 Function diagram and PA parameters
8.1 Parameter listing ................................................................ 73
8.2 Function diagram ............................................................... 78
Safety information
Please read this manual carefully, and also take
note of country-specific installation standards
(e.g. the VDE regulations in Germany) as well
as all prevailing safety regulations and accident prevention rules.
For safety and warranty reasons, any internal
work on the instruments, apart from that involved in normal installation and electrical connection, must be carried out only by qualified
VEGA personnel.
VEGASON 51P … 53P 3
Note Ex area
Please note the approval documents (yellow
binder), and especially the included safety
data sheet.
1 Product description
Product description
1.1 Function
Continuous level measurement with ultrasonic
sensors is based on the running time measurement of ultrasonic pulses.
Measuring principle
High performance piezoceramic transducers
emit focused 70 kHz ultrasonic pulses which
are reflected by the product surface. The
measurement electronics prepares a precise
image of the environment from the reflected
ultrasonic pulses. The transducers work both
as transmitter and receiver. As receiver, the
transducers are high-sensitivity piezo microphones.
Meas. distance
emission - reflection - reception
The measurement electronics precisely calculates the distance between transducer and
medium from the speed of sound and the
measured running time of the emitted sound
impulse. The distance is then converted into
a level-proportional signal and, in conjunction
with the sensor parameter settings, made
available as a precise, calibrated level value.
Since the speed of sound is subject to temperature influence, the transducer also continuously detects the ambient temperature,
so that the level is precisely measured even
in case of varying ambient temperature.
Output signal
The level-proportional Profibus PA measuring
signal is processed and outputted completely digitally. Digital processing of the
measuring signal ensures an accuracy which
could be never reached by an analogue
measuring signal, as the digital signal is
always transmitted error-free right up to the
last decimal point.
Varying line resistances or tiny leakage currents do not influence the accuracy of digital
technology. The digital signal is always clear
and unambiguous.
The digital signal, mirroring the adjusted
measuring range of the sensor, can be modified by various parameter settings.
Display of measured values
As an option, the series 50 ultrasonic sensors
can be equipped with an indicating instrument for direct, local level survey. The indicating instrument shows the precise level by
means of the analogue bar graph and the
digital number value. In addition to the indication in the sensor, you can have the level
displayed with the VEGADIS 50 external
indicating instrument at a distance of up to
25 m from the sensor. The external display of
measured values operates, like the integrated display, independently of the PA output signal and can be modified through individual parameter settings.
4 VEGASON 51P … 53P
Product description
1.2 Application features
Applications
• Level measurement of all liquids.
• Level measurement of solids (only short
meas. distances) such as e.g. coal, ore,
rocks, rock dust, cement, gravel, crushed
rock, sand, sugar, salt, cereals, flour, granules, powder, dust, sawdust, wood chips.
• Flow measurement on various flumes.
• Gauge measurement, distance measure-
ment, object monitoring and conveyor belt
monitoring
• Display of measured values integrated in
the sensor.
• Optional display separate from sensor.
Two-wire technology
• Supply and output signal on one two-wire
cable.
• Output signal and signal processing completely digital, therefore maximum accuracy.
• Profibus profile 3 – sensor.
Rugged and precise
• Measurement unaffected by substance
properties such as density, conductivity,
dielectric constant…
• Suitable for corrosive substances
• Measuring ranges 0.25 m … 15 m.
1.3 Profibus output signal
PRO
cess FIeld
sult of a joint project of thirteen companies
and five universities. The companies Bosch,
Klöckner-Möller and Siemens played a decisive role. The specifications of the bus are
described in the protocol layers 1, 2 and 7 of
the ISO/OSI reference model and are available from the PNO (Profibus user organisation). Layers 3 … 5 have not yet been
developed as a standard, leaving Profibus
with far-reaching perspectives for the future.
Today approx. 600 companies make use of
Profibus technology and belong to the PNO.
Profibus
Specification, Profibus DP for Decentralise
Periphery and Profibus PA for Process Automation.
As a process automation bus, Profibus PA
enables power supply over the bus. Up to 32
sensors can be operated on a shielded twowire cable that carries both power supply
and measuring signal. In Ex areas, up to ten
sensors can be connected from the PA level
to one two-wire cable (EEx ia).
Bus structure
BUS
(PROFIBUS) is the re-
FMS
stands for Fieldbus Messaging
Adjustment
• With adjustment software VEGA Visual
Operating (VVO) on the PC
• With detachable adjustment module
MINICOM
• With Simatic-PDM adjustment program.
Connection to any process
• G 11/2 A, 11/2“ NPT.
• G 2 A, 2“ NPT.
• Compression flange DN 100, ANSI 4“
Approvals
• CENELEC, ATEX, PTB, FM, CSA, ABS,
LRS, GL, LR, FCC.
VEGASON 51P … 53P 5
The DP and PA bus consists of up to 126
master and slave participants. Data are always exchanged from point to point, with the
data traffic being exclusively controlled and
checked by master devices. Communication
is carried out according to the Token-Passing
procedure. This means that the master owning the Token, can contact the slaves, give
instructions, enquire data and cause the
slaves to receive and transmit data. After the
work is done or after a predetermined time
interval, the Token is passed on by the master to the next master.
Product description
Master-Class 1
is the actual automation system, i.e. the process control computer or the PLC enquires
and processes all measured values.
Master-Class 2
One or several Master-Class 2 can operate in
a Profibus network. As a rule, Master-Class 2
devices are engineering, adjustment or visualisation stations. The VEGA adjustment software VVO (VEGA Visual Operating) operates
as Master-Class 2 participant on the DP bus
and can work on an engineering PC, on an
adjustment PC or on the process control
computer and can access any VEGA sensor
on the PA level.
Instrument master file
A so-called GSD file is attached to a VEGASON Profibus sensor. This file is necessary
for integrating the sensor into the bus system. The GSD file (instrument master file)
contains, beside the sensor name and the
manufacturer, the sensor-specific communication parameters which are necessary for a
stable integration of the sensor in the bus.
Load the GSD file belonging to the sensor
into your bus configuration program. If the
GSD file is not available, it can be loaded
from the VEGA homepage: http://
www.vega.com.
Do not mix up the GSD file with the EDD
(Electronic Device Description) necessary for
the PDM environment (this can be also found
on the VEGA homepage).
1.4 Adjustment
Each measuring situation is unique. For that
reason, every ultrasonic sensor needs some
basic information on the application and the
environment, e.g. which level means "empty“
and which level "full“. Beside this "empty and
full adjustment“, many other settings and
adjustments are possible with VEGASON
ultrasonic sensors. The output of echo
curves or the calculation of vessel linearisation curves by means of vessel dimensions
are only two examples.
Profibus adjustment structure
In the Profibus environment there are different adjustment concepts and adjustment
tools which often differ considerably from
manufacturer to manufacturer. From the user’s point of view, a manufacturer-independent adjustment program which could be
directly operated on the Profibus DP, but also
from a central point (e.g. the engineering
station or the process control) would be
ideal.
In the past, only the program "SIMATIC
PDM“, based on the HART® adjustment structure, could fulfill this wish. However, this program also has the same limitation as HART®.
As with HART®, an instrument-specific database is required for comprehensive adjustment with PDM (Process Device Managing).
Without this, only basic instrument functions,
such as live adjustment, are available. In the
PDM environment, this instrument-specific
database is called EDD (Electronic Device
Description). Completely analogous to the
HART® environment, the PDM environment
also requires a DD (Device Description) for
each (with the exception of VEGA HART
instruments) sensor.
®
6 VEGASON 51P … 53P
Product description
We are aware of the disadvantages of the
HART® environment: for each sensor/participant an individual DD must be loaded which,
in addition, must always be the latest and
most up-to-date DD. Special adjustment
options such as e.g., the output of an echo
curve, are available neither with HART® nor
with PDM. The SIMATIC-PDM adjustment
concept was tailored more to the basic adjustment functions. Intelligent, communicative
sensors, however, make much more additional information available to the measurement loop and open up completely new adjustment possibilities. PDM was not
conceived with such things in mind. Really
user-friendly adjustment is out of the question. That’s history now.
The legitimate wish of many Profibus users
for a manufacturer-independent adjustment
tool without EDD has now been realised with
PACTware
TM 1)
. An association of a number of
process technology companies developed
PACTwareTM: a Process Automation Configuration Tool, running different manufacturer
software tools under a standardized user
interface and adjustment structure. Specialists call this technology Field Device Transcription. Just as different as Windows
printer drivers enable operation of completely
different printers under one user interface,
PACTware
TM
enables operation of all field
instruments under one user interface. Instrument-specific databases (EDD), like those
required for SIMATIC PDM, are not necessary.
Adjustment with the adjustment program VVO - VEGA Visual Operating
Setup and adjustment of the ultrasonic sensors is generally done on the PC with the
adjustment program VEGA Visual Operating
(VVO) under Windows®. The program leads
quickly through adjustment and parameter
setting by means of pictures, graphics and
process visualisations.
The VEGA adjustment software VVO (VEGA
Visual Operating) operates either as a
subprogram of the host program PACTware
(according to the FDT concept) or as an
independent adjustment program on any PC,
engineering station or process control computer.
The adjustment program recognises the sensor type
TM
As a result of this development, three adjustment media are now available for VEGAProfibus sensors:
- adjustment with the PC and the adjustment
program VVO (VEGA Visual Operating) as
a stand-alone tool which can, however, also
run as a subprogram of PACTware
TM
- adjustment with the detachable adjustment
module MINICOM in the sensor
- adjustment with the SIMATIC PDM adjust-
ment program (requires EDD instrument
Visualised input of a vessel linearisation curve
databases for advanced adjustment)
1)
presumably available until end of 2000
VEGASON 51P … 53P 7
Product description
The VEGA adjustment program VVO can
access the entire spectrum of adjustment
options of VEGA sensors and, if necessary,
can update the complete sensor software. To
do this, the adjustment program must be
installed on a PC which is equipped with a
Profibus-Master-Class 2 interface card
(Softing) (see diagram on following page).
The PC with the Profibus interface card can
be connected directly at any point on the DP
bus with the standard RS 485 Profibus cable.
The adjustment and parameter data can be
saved with the adjustment software on the
PC and protected by passwords. If necessary, the adjustments can be transferred
quickly to other sensors.
In practice, the adjustment program VVO is
often installed as a tool on an engineering
station or an adjustment station. VVO then
accesses via the Profibus interface card
(e.g. from Softing) as Master-Class 2 directly
via the bus, from the DP level via the segment coupler on PA level and finally to the
individual sensor, all VEGA sensors.
No DD necessary for adjustment with VVO
In addition to the instrument master file
(GSD), with which a sensor is logged into the
Profibus system, the majority of all Profibus
sensors also requires along with the specific
adjustment software a so-called EDD (Electronic Device Description). This is not the
case with VVO. The adjustment software
VVO can communicate at any time with all
VEGA sensors without requiring a special
database. Of course, all other VEGA sensors
can be adjusted with the adjustment software
as well (4 … 20 mA sensors or VBUS sen-
sors). With VEGA sensors, it is not necessary to go looking for the latest EDD. This is
the essential requirement of a manufacturerindependent adjustment program anticipated
by many users.
The above mentioned program PACTwareTM is
such a manufacturer-independent automation/configuration tool through which access
to instruments of different manufacturers
(Krohne, Pepperl + Fuchs, VEGA, VIKABürkert…) is possible. The VEGA adjustment
software VVO works as an independent tool
or as a subprogram of PACTwareTM. Depending on the sensor/instrument currently being
accessed, PACTwareTM activates the necessary menu options.
8 VEGASON 51P … 53P
Product description
Adr. 21
SPS
Adr. 22
VVO
3
PA-
Adr. 23
Master-Class 1
Adr. 1
DP-Bus
Adr. 24
DP interface card as Master
Class 2 (e.g. Softing)
Adr. 10
3
Adr. 57
Segment coupler
Adr. 25 … 56
2
(max. 32 participants)
Adr. 58
Adr. 60
Adr. 59
Adr. 26
Adr. 25
Adr. 27
Adr. 28
Adr. 29
Adjustment of the VEGASON ultrasonic sensors from the process control via a Profibus interface card in the
process control computer or in an additional PC. The adjustment software VEGA Visual Operating (VVO) accesses the sensors bidirectionally via the interface (interface card).
VEGASON 51P … 53P 9
Product description
Adjustment with adjustment module
MINICOM
With the small (3.2 cm x 6.7 cm) 6-key adjustment module with display in the sensor,
the sensor-relevant adjustments can be carried out directly on the sensor.
Tank 1
m (d)
12.345
Detachable adjustment module MINICOM
The adjustment module can be plugged into
the ultrasonic sensor or into the optional,
external indicating instrument.
ESC
+
-
Tank 1
m (d)
OK
12.345
ESC
+
-
OK
Adjustment with the SIMA TIC PDM adjustment program
To adjust all essential functions of the VEGA
sensor with the adjustment station SIMATIC
PDM from Siemens, a so-called EDD is required. Without this EDD, only the basic functions, such as min./max. live adjustment or
the integration time, can be adjusted with the
PDM adjustment program. Further important
adjustment functions, such as the input of the
"
Meas. environment
false echo storage are not available without
EDD. After integration of the EDD files into the
Simatic PDM adjustment software, all important adjustment functions are accessible. If
the file is not on hand, the obligatory GSD
(instrument master file) as well as the EDD
(Electronic Device Description) necessary for
PDM can be downloaded from the VEGA
Homepage (http://www.vega.com).
“, a dry adjustment or a
2
PA-Bus
ESC
+
-
Tank 1
m (d)
OK
12.345
4
max. 2.5 m
Adjustment with detachable adjustment module. The
adjustment module can be plugged into the ultrasonic
sensor or the external indicating instrument VEGADIS
50.
With the adjustment module MINICOM, the
sensor can be adjusted to the actual measuring conditions, and the basic functions can
be set. In addition to the measuring conditions and simulation mode, the Profibus address can be adjusted and a false echo
storage can be carried out, see "6.3 Adjustment with MINICOM“.
10 VEGASON 51P … 53P
Types and Profibus configuration
2 Types and Profibus
configuration
VEGASON series 50 sensors are a newly
developed generation of extremely compact
ultrasonic sensors. With very modest space
requirements, they were developed for
measuring distances of 0 … 15 m and for
standard applications such as storage vessels, gauge measurement and buffer tanks.
Thanks to their diminutive housing dimensions and process fittings, the compact sensors are an inconspicuous and cost-effective
solution to your level measurement applica-
2.1 Survey
Short overview of sensor features
• Application preferably for solids and liquids.
• Measuring range 0.25 … 15 m.
• Ex approved in Zone 1 (IEC) or Zone 1 (ATEX) classification mark
EEx ia [ia] IIC T6.
• Integrated display of measured values.
tions. With the integrated display and a remarkable sensor intelligence, they can be
used for applications in which the advantages of non-contact measurement could
never before be realized.
VEGASON 50 ultrasonic sensors are perfectly suited to two-wire technology. The
supply voltage and the output signal are
transmitted via one two-wire cable. As output
or measuring signal, the instruments produce
a digital output signal (Profibus PA).
Overview
Signal output
– digital meas. signal (PA) •••
Voltage supply
– PA-two-wire technology (voltage
supply and signal output
via one two-wire cable) •••
Process connection
– G11/2 A; 11/2“ NPT •––
– G 2 A; 2“ NPT –•–
– DN 100 compression flange ––•
Adjustment with
– PC with adjustment software VVO •••
– adjustment module in the sensor •••
– adjustment module in external indicating
instrument •••
– SIMATIC-PDM •••
– PACTwareTM (VVO runs as
subprogram •••
Meas. range in m
– liquid 0.25 … 4 0.4 … 7 0.6 … 15
– solid
VEGASON 51P … 53P 11
VEGASON 51P 52P 53P
Type code
Types and Profibus configuration
VEGASON 52 P EX.XX X X X X X
K Plastic housing PBT, M20 x 1.5 cable entry
N Plastic housing PBT,
1
/2“ NPT cable entry
A Aluminium housing, M20 x 1.5 cable entry
A - DN 100 compression flange (PPH)
B - DN 100 compression flange (.14571)
C - Mounting strap 1.401
G - Process connection G 2 A
N - Process connection 2“ NPT
Y - Other process connections
X - without display
A - with integrated display
X - without adjustment module MINICOM
B - with adjustment module MINICOM (mounted)
A - 20 … 72 V DC; 20 … 250 V AC; 4 … 20 mA (four-wire)
B - 20 … 72 V DC; 20 … 250 V AC; 4 … 20 mA, HART
®
(four-wire)
C - Two-wire (loop powered), 4 … 20 mA
D - Two-wire (loop powered), 4 … 20 mA, HART
®
E - Supply via signal conditioning instrument
G - Segment coupler for Profibus PA
P - 90 … 250 V AC (only in USA)
N - 20 … 36 V DC, 24 V AC (only in USA)
Z - Supply via signal conditioning instrument (only in USA)
.X - without Ex approval
EX.X - Use in Ex-Zone 1 (only for two-wire sensors)
EX0.X - Use in Ex-Zone 0 (only for two-wire sensors)
K - Analogue 4 … 20 mA output signal (two-wire or
four-wire technology)
V - Digital output signal (two-wire technology) VBUS
P - Digital output signal Profibus PA
Type 51: Meas. range 0.25 … 4 m
Type 52: Meas. range 0.4 … 7 m
Type 53: Meas. range 0.6 … 15 m
Meas. technology (SON for ultrasonic)
12 VEGASON 51P … 53P
Types and Profibus configuration
2.2 Bus configuration
The type of ultrasonic sensor you use depends on the process requirements and the
mounting conditions, as well as on the requirements of your control, regulative, or
process management system.
VEGASON 51P … 53P Profibus ultrasonic
sensors are instruments for use in the Profibus PA environment. Profile 3 has been implemented in the sensors. A measuring
system consists of one or several sensors,
one or several segment couplers and one DP
master computer, such as e.g. a S7 PLC with
Profibus interface or a process control system with Profibus DP-Master-Slot. The
processing unit, e.g. the PLC, evaluates the
level-proportional, digital measuring signals
in a number of evaluation routines and puts
them to use process-specifically.
On the following two pages, you will find a
schematic diagram of the bus configuration.
The automation system as Master-Class 1
takes complete control of the bus. It reads
out all signals cyclically and, if necessary,
gives instructions to the participants (e.g.
sensors). In addition, further master systems
(e.g. visualisation systems or adjustment
tools) can be connected to the DP bus.
These systems operate as so-called MasterClass 2 participants. Like the Master-Class 1
system, they can read out signals, give instructions and operate in the acyclical mode.
A DP bus does not allow power supply via
the signal cable, whereas the PA bus does.
Both DP and PA require at least one
screened two-wire cable. The DP bus can
additionally have up to 8 cores (screened),
through which supply cables can also be led.
Each participant on the bus must have an
address. The addressing covers both bus
levels. A Profibus DP system can have max.
126 participants, including all participants on
the PA level. In practice, each Master-Class 1
computer gets address 1 and the MasterClass 2 computers address 10 … 20. As a
rule, the slaves or participants get the addresses 21 … 126. On the Profibus PA level,
max. 32 sensors are possible on one PA
segment coupler.
Ex environment
In Ex environment, intrinsically safe (EEx ia)
PA sensors are used with Ex segment couplers. Generally, the number of PA sensors
on a segment coupler (Ex or non Ex) depends on the current supplied by the sensors and from the current offered by the
segment coupler. Segment couplers for
EEx ia environment provide 90 … 110 mA.
The number of sensors results from the sum
of:
- the basic power consumption of all sensors
- plus 9 mA communication signal
- plus the leakage currents of all sensors
- plus a recommended current reserve
(approx. 10 mA)
The min. basic current has been set at 10 mA
according to the Profibus specification.
VEGA Profibus sensors draw a constant
basic current of 10 mA and operate without
leakage current requirement. This allows up
to 10 VEGA sensors in Ex environment to be
operated on one segment coupler.
VEGASON 51P … 53P 13
Adresse 1
Types and Profibus configuration
2…8
Segment
coupler
PLC/DCS
Master-Class 1
Adresse
21...52
3
2
Profibus PA
21 22 52
1 … 32 sensors
(Ex: 1 … 10)
Master-Class 2
Master-Class 2
interface card
14 VEGASON 51P … 53P
Adresse 10
Types and Profibus configuration
Profibus DP
Segment
coupler
Adresse
53...84
M
Adresse
85
3~M
Adresse
86
2
Profibus PA
53 54 84
Adresse
87
1 … 32 sensors
VEGASON 51P … 53P 15
Technical data
3 Technical data
3.1 Technical data
Power supply
Supply voltage 9 … 32 V DC
Power consumption constant 10 mA (no leakage current output)
Output voltage UO of the segment coupler,
(depending on the segment coupler used)
see PA specification e.g.
- non Ex e.g. 22 V DC (nominal voltage of the segment
- Ex 13.5 V DC nominal voltage of the segment
Cable load dependent on the segment coupler, see
Measuring range (reference plane is the transducer end)
VEGASON 51 0.25 … 4 m 0.3 … 2 m
VEGASON 52 0.4 … 7 m 0.5 … 3.5 m
VEGASON 53 0.6 … 15 m 0.75 … 7 m
Output signal (see also "3.3 Data format of the output signal“)
digital (Profibus) the digital output signal (meas. signal) is
Integration time 0 … 999 seconds (adjustable)
coupler) max. 32 sensors on one two-wire
cable
coupler max. 10 sensors on one two-wire
cable (typically 8 sensors)
technical data of the segment couplers and
Profibus specification
Liquids Solids
modulated onto the power supply and further
processed in the PLC or in the process management system
Adjustment
- adjustment software VEGA Visual Operating on Master-Class 2 PC
- adjustment module MINICOM in the sensor or in the external indicating instrument (optional)
- process adjustment interface PACTwareTM (VVO as subprogram)
- SIMATIC PDM in conjunction with Electronic Device Description (EDD)
16 VEGASON 51P … 53P
Technical data
Display of measured value (optional)
Liquid crystal display
- in the sensor scalable output of measured value as graph and
as numerical value
- external, powered by the sensor scalable output of measured value as graph and
as numerical value, display can be separated
up to 25 m from the sensor
Accuracy
1)
(typical values under reference conditions, all information relates to the nominal measuring
range)
Characteristics linear
Deviation in characteristics including
linearity, reproducibility and
hysteresis (determined acc. to the
limit point method) < 0.1 %
Linearity better than 0.05 %
Average temperature coefficient of the
zero signal 0.06 %/10 K
Resolution general max. 1 mm
Resolution of the output signal 0.005 % or 1 mm
Characteristics
1)
(typical values under reference conditions, all information relates to the nominal measuring
range)
Min. span between
full and empty > 20 mm (recommended > 50 mm)
Ultrasonic frequency (at 20°C)
- VEGASON 51 70 kHz
- VEGASON 52 55 kHz
- VEGASON 53 34 kHz
Meas. intervals 1.0 s
Beam angle (at –3 dB acoustic power)
- VEGASON 51 5.5°
- VEGASON 52 5.5°
- VEGASON 53 3°
Influence of the ambient temperature negligible, is compensated by a dynamic
temperature detection integrated in the
transducer. The ambient temperature error
without temperature compensation is 0.18 %/K
Influence of the process pressure negligible within the approved sensor pressures
Adjustment time
2)
> 2 s (depending on the parameter adjustment)
1)
Similar to DIN 16 086, reference conditions according to IEC 770, e.g.
temperature 15°C … 35°C; moisture 45 % … 75 %; pressure 860 mbar … 1060 mbar
3)
The adjustment time (also actuating time, response time or adjustment period) is the time the sensor
requires to output the correct level (with max. 10% deviation) after a quick level change.
VEGASON 51P … 53P 17
Ambient conditions
Ambient temperature on the housing -40°C … +80°C
Process temperature (transducer) -40°C … +80°C (StEx: -20°C … +75°C)
Storage and transport temperature -40°C … +80°C
Vessel pressure
- VEGASON 51, 52 -0.4 … 2.0 bar (absolute 3 bar)
- VEGASON 53 -0.4 … 1.5 bar (absolute 2.5 bar)
Protection
- sensor IP 67
- transducer, process IP 68
Protection class II
Overvoltage category III
Self-heating at 40°C
ambient temperature to
- sensor 45°C
- transducer, process 55°C
Ex technical data
Comprehensive data included in the attached approval documents (yellow binder)
Classification ia intrinsically safe
Classification mark II 1G EEx ia IIC T6 or II 2G EEx ia IIC T6
Ex approved Zone 0, Zone 1 (ATEX)
Zone 0, Zone 1 (CENELEC, PTB, IEC)
Permissible ambient temperature
on the housing
- T6 -40°C … +42°C
- T5 -40°C … +58°C
- T4, T3 -40°C … +60°C
Permissible ambient temperature
on the transducer when used
in Ex areas
-T6 45°C
-T5 60°C
-T4 60°C
-T3 60°C
Technical data
Process connections
VEGASON 51 G11/2 A, 11/2“ NPT
VEGASON 52 G 2 A, 2“ NPT
VEGASON 52 DN 100 compression flange or mounting loop
Connection cables
Power supply supply and signal via one two-wire cable
Electrical connection spring terminals (max. 2.5 mm2)
Cable entry 2 x M20 x 1.5 (cable diameter 5 … 9 mm)
or 2 x 1/2“ NPT (cable diameter
Ground connection max. 4 mm
3.6 … 8.7 mm or 0.12 … 0.34 inch)
18 VEGASON 51P … 53P
2
Technical data
Materials
Housing PBT (Valox) or
Process connection
- VEGASON 51, 52 PVDF (thread)
- VEGASON 53 PP or 1.4571 (compression flange)
Transducer
- VEGASON 51, 52 PVDF
- VEGASON 53 UP
Transducer diaphragm
- VEGASON 51, 52 PVDF
- VEGASON 53 1.4571
Weights
VEGASON 51 1.2 kg
VEGASON 52 1.6 kg
VEGASON 53 2.3 kg
CE conformity
VEGASON 51 … 53 ultrasonic sensors meet the protective regulations of EMC (89/336/
EWG) and NSR (73/23/EWG). Conformity has been judged acc. to the following standards:
EMC Emission EN 50 081 - 1: 1993
Susceptibility EN 50 082 - 2: 1995
NSR EN 61 010 - 1: 1993
Aluminium die casting (GD-AlSi 10 Mg)
1.4301 (mounting loop)
EN 61 326 - 1: 1997/A1: 1998
3.2 Approvals
When using ultrasonic sensors in Ex areas or
on ships, the instruments must be suitable
and approved for the explosion zones and
applications.
The suitability is checked by the approval
authorities and is certified in approval documents.
Please note the attached approval documents when using a sensor in Ex area.
VEGASON 51P … 53P 19
Test and approval authorities
- PTB
(Physikalisch Technische Bundesanstalt Physical Technical Approval Authority)
- FM
(Factory Mutual Research)
- ABS
(American Bureau of Shipping)
- LRS
(Lloyds Register of Shipping)
- GL
(German Lloyd)
- CSA
(Canadian Standards Association)
Technical data
3.3 Data format of the output signal
Byte4 Byte3 Byte2 Byte1 Byte0
Status Meas. value (IEEE-754 format, see below)
Status byte:
The status byte corresponds to the profile 3.0 "Profibus PA Profile for Process Control Devices“ coded. The status "Meas. value OK“ is coded as 80 (hex) (Bit7 = 1, Bit 6 … 0 = 0).
Meas. value:
The meas. value is transferred as a 32 Bit floating point number in IEEE-754 format.
Byte n Byte n+1
Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit
7654321076543210
VZ 27262524232221202-12-22-32-42-52-62
Sign
Exponent Mantissa
Byte n+2 Byte n+3
Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit
7654321076543210
2-82-92
-102-112-122-132-142-152-162-172-182-192-202-212-222-23
-7
Mantissa Mantissa
Formula: Meas. value = (-1)VZ • 2
Examples: 41 70 00 00 (hex) = 0100 0001 0111 0000 0000 0000 0000 0000 (bin)
Meas. value = (-1)0 • 2
(Exponent - 127)
(130 - 127)
• (1 + Mantissa)
• (1 + 2-1 + 2-2 + 2-3)
= 1 • 23 • (1 + 0.5 + 0.25 + 0.125)
= 1 • 8 • 1.875
= 15.0
20 VEGASON 51P … 53P
Technical data
3.4 Dimensions
VEGASON 51
95
152
VEGASON 52
206
202
22
65
2 x M20x1.5
Pipe thread G 11/2 A or
11/2“ NPT
Reference plane
ø39
ø60
85
95
Min. distance
to the medium
152
0,25 m
Pipe thread G 2 A or
2" NPT
22
61
ø50
ø72
85
SW 60
Min. distance
to the medium
Reference plane
0,4 m
VEGASON 51P … 53P 21
Technical data
VEGASON 53
ø12
95
247
193
120
12
M8x10
ø148
ø158
External indicating instrument VEGADIS 50
38
ø5
48
10
118
108
135
82
Mounting loop
ø12
152
Min. distance
suitable for compression
flange DN 100
to the medium
Note:
The diameter of the connection cable should
be at least 5 mm and max. 9 mm.
85
Otherwise the seal effect of the cable entry
may not be ensured.
0,6 m
Pg 13,5
Mounting on carrier rail 35 x 7.5 acc. to EN 50 022 or flat
screwed
Adjustment module MINICOM
Tank 1
m (d)
12.345
67,5
22 VEGASON 51P … 53P
ESC
+
-
32,5
OK
Adjustment module for insertion into series 50
sensors or into the external indicating instrument VEGADIS 50
74
Mounting and installation
4 Mounting and installation
4.1 General installation instructions
transducer end or for instruments in flange
version, the instrument flange. Please note
Measuring range
the information on the reference plane in
chapter "3.3 Dimensions“. The max. filling
Beside other criteria, you select your instrument according to the required measuring
range. The reference planes for the min. and
max. distance to the liquid or solid is the
Type 51
Min.
distance
0.25 m 0.4 m
Min. distance, max. measuring range and span (example VEGASON 51, 52 and 53)
Full
1m
max. meas. range
Max. meas. distance: 4 m (type 51), 7 m (type 52), 15 m (type 53)
Empty
Min.
distance
0.75 m
depends on the required min. distance of the
instrument used (0.25 m up to 0.75 m) and
the mounting location of the instrument or the
transducer.
Type 53 Type 52
Reference plane
Span
Min.
distance
Beam angle and false echoes
At greater distances, the energy of the ultrasonic impulses distributes over a large area,
The ultrasonic impulses are focused by the
transducers. The impulses leave the transducer in conical form similar to the beam
pattern of a spotlight. The beam angle is 5.5°
thus causing weaker echoes from obstructing surfaces. The interfering signals are
therefore less critical than those at close
range.
(VEGASON 51/5) or 3° (VEGASON 53) at
-3 dB emitted power.
If possible, orient the sensor axis perpendicularly to the product surface and avoid
Any object, e.g. tubes or struts inside this
emission cone will cause a large false echo.
vessel installations (e.g. pipes and struts)
within the 100 % area of the emission cone.
Especially within the first few meters of the
emission cone, pipes, struts, or other installations can interfere with the measurement. At a
distance of 6 m, the false echo of a strut has
an amplitude nine times greater than at a
The following illustration of the ultrasonic
beams is simplified and represents only the
main beam - a number of additional weaker
beams exists.
distance of 18 m.
VEGASON 51P … 53P 23
Therefore, in practical application, the transducer has to be oriented so that lowest possible false echo signal strength is achieved.
Only giving attention to the size of the useful
echo is usually not adequate under difficult
measuring conditions. In most cases, a low
false echo level enables the sensor to reliably
pick up the useful echo. With the adjustment
software VVO on the PC, you can view the
echo image (see chapter "6.2 Adjustment
with VVO – Sensor optimisation – Echo
curve“).
Mounting and installation
On flat vessels, mounting is usually done on
a very short DIN socket piece. Reference
plane for flange versions is the instrument
flange. The transducer should protrude out
of the flange tube.
Meas. distance
0 m
4 m
7 m
Meas. distance
0 m
VEGASON 51/52
0,4
0
VEGASON 53
0,4
3
8
50 %
50 %
emitted power
100 %
emitted power
1,21,2
emitted power
Reference plane
£ 60 mm
Flange version on very short DIN socket piece
A mounting location directly on the vessel top
is ideal. A round opening in the vessel top is
sufficient to fasten the VEGASON 53 sensor
with a compression flange.
m
Min.
distance
0.6 m
Reference plane
emitted power
100 %
Flange version (compression flange) on flat vessel
top
It is also possible to mount sensors with 11/2“
or 2“ thread to short socket pieces.
15 m
0,4
1,2
0,4
0
24 VEGASON 51P … 53P
m
1,2
Mounting and installation
£ 60 mm
Reference plane
Mounting on short 11/2“ or 2“ socket piece
Dished tank ceiling
On dished tank ceilings, please do not mount
the instrument in the centre, but approx. 1/
vessel radius from the centre. Dished tank
ceilings can act as paraboloidal reflectors. If
the transducer is placed at the focal point of
the parabolic ceiling, the transducer receives
amplified false echoes. The transducer
should be mounted outside the focal point.
Amplified echoes caused by parabolic surfaces are thereby avoided.
£ 60 mm
Reference plane
2
Reference
plane
£ 60 mm
1
/2 vessel radius
Flange on dished vessel ceiling
Open vessels
On open vessels, use of instruments on an
extended mounting bracket is recommended. Mount the low-weight sensor onto
such a bracket and ensure a sufficient distance from the vessel wall.
Reference plane
Min. meas.
distance
Type 51: 0.25 m
Type 52: 0.4 m
1
/2 vessel radius
Mounting boss on dished tank ceiling
Open vessels
VEGASON 51P … 53P 25
Mounting and installation
Pump shaft
Narrow, uneven shafts, wells and vessel
openings with very rough walls and shoulders make ultrasonic measurement extremely difficult due to strong false echoes.
This problem can be overcome by using an
extended socket piece or a complete measuring tube (see chapter "4.5 Socket extension“).
see “4.4 Socket extension“
Socket piece
Shaft pump
Example of a socket extension or measuring tube in a
shaft
Very good measuring results can be attained
with a measuring tube in continuous narrow
shafts, see figure. The applied measuring
tube must have smooth walls inside (e.g. PE
sewage pipe) and a diameter ³ 200 mm. This
arrangement works well as long as the inside
of the measuring tube collects no dirt or
buildup (cleaning necessary). You might
want to consider using hydrostatic pressure
transmitters or capacitive measuring probes.
Either the measuring tube should never be
immersed in the medium, or it must always
be immersed, so that the measurement is
carried out exclusively in the tube.
³ 100 mm
Measuring tube
Shaft pump
min.
distance
Meas. range
4.3 Measurement of solids
Flange mounting
As with applications for liquids, the instrument
can be mounted on a short DIN socket connection on vessels for solids. The transducer
axis should only point to the vessel outlet or
should be directed perpendicular to the
product surface and must be very short
(< 100 mm).
Reference plane
Min. distance
VEGASON 53 on vessel flange
Swivelling holder
A swivelling holder enables not only correct
orientation to the product surface but also
minimisation of possible false echoes.
Our line of accessories contains a swivelling
holder (mounting loop) for mounting VEGASON 53. It enables optimum orientation of
the sensor to the product surface.
26 VEGASON 51P … 53P
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