Vega VEGABAR 14 User manual

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Operating Instructions
VEGABAR 14

2VEGABAR 14
22442-EN-021023
Contents
Contents
1 About this document
1.1 Purpose ..................................................... 4
1.2 Target group .............................................. 4
1.3 Symbolism used ....................................... 4
2 For your safety
2.1 Authorised personnel ................................ 6
2.2 Appropriate use......................................... 6
2.3 Warning about misuse ............................... 6
2.4 General safety instructions ........................ 6
2.5 CE conformity ............................................ 7
2.6 Environmentally responsible behaviour ..... 7
3 Product description
3.1 Configuration ............................................. 8
3.2 Principle of operation ................................. 8
3.3 Adjustment ................................................ 9
3.4 Storage and transport ................................ 9
4 Mounting
4.1 Mounting procedure ................................ 10
4.2 Mounting examples ................................. 12

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Contents
5 Connect power supply
5.1 Prepare connection .................................. 15
5.2 Connection procedure ............................. 16
5.3 Wiring plans ............................................ 17
6 Set-up .............................................................. 18
7 Maintenance and fault rectification
7.1 Maintenance ............................................ 19
7.2 Fault rectification ..................................... 19
8 Dismounting
8.1 Dismounting procedure ........................... 20
8.2 Disposal .................................................. 20
Supplement
Technical data .................................................. 21
Dimensions ....................................................... 25

4VEGABAR 14
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About this document
1 About this document
1.1 Purpose
This operating instructions manual gives you all the
information you need for quick set-up and safe opera-
tion of VEGABAR 17. Please read this manual before
you start set-up.
1.2 Target group
All instructions described in this manual must be
carried out only by trained and authorized personnel.
The contents of this manual should be made avail-
able to this personnel and put into practice by them.
1.3 Symbolism used
Information, tip, note
This symbol indicates helpful additional information.
Caution
This symbol informs you of a possible and danger-
ous situation. Ignoring this cautionary note can impair
the person and/or the instrument.
Ex applications
This symbol indicates special instructions for Ex ap-
plications.

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About this document
List
The dot put in front indicates a list with no implied
sequence.
Action
This arrow indicates a single action.
Sequence
Numbers set in front indicate successive steps in a
procedure.
•
1
–>

6VEGABAR 14
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For your safety
2 For your safety
2.1 Authorised personnel
All operations described in this operating instructions
manual must be carried out only by trained and au-
thorised personnel. For safety and warranty reasons,
any internal work on the instruments must only be
carried out by qualified VEGA personnel.
2.2 Appropriate use
VEGABAR 14 is a process pressure transmitter for
gauge or absolute pressure measurement.
2.3 Warning about misuse
Inappropriate or incorrect use of the instrument can
give rise to application-specific hazards, e.g. vessel
overfill or damage to system parts by wrong mount-
ing or setting.
2.4 General safety instructions
VEGABAR 14 is a high-tech instrument requiring the
strict observance of standard regulations and guide-
lines. The user must take note of the safety instruc-
tions in this operating instructions manual, the coun-
try-specific installation standards (e.g. the VDE
regulations in Germany) as well as prevailing safety
regulations and accident prevention rules.

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2.5 CE conformity
The VEGABAR 14 process pressure transmitter is in
CE conformity with EMC (89/336/EWG) and NSR
(73/23/EWG) and fulfils the Namur recommendations
NE 21.
The conformity has been evaluated acc. to the follow-
ing standards:
EMC emission EN 50081-1: 1992
susceptibility EN 50082-2: 1995
NSR EN 61010: 1993
The VEGABAR 14 is subject to pressure instrument
guideline (97/23/EC) without CE identification.
The max. permissible pressure is 200 bar.
2.6 Environmentally responsible behaviour
Protection of the environment is one of our most im-
portant duties. That is why we have introduced an
environmental management system that focuses on
continuous improvement of company environmental
protection. The environmental management system is
certified acc. to DIN EN ISO 14001.
Please help us fulfil this obligation by observing the
environmental instructions in this manual.
For your safety

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Application area
Product description
3 Product description
3.1 Configuration
The scope of delivery encompasses:
• VEGABAR 14 process pressure transmitter
• angled plug connector and 2 mm screwdriver (for
instruments with connection acc. to DIN 43650)
• connection cable (for instruments with cable out-
let)
• Documentation
– this operating instructions manual
– test protocol.
3.2 Principle of operation
VEGABAR 14 is a process pressure transmitter for
gauge, absolute or vacuum pressure measurement.
The measured media can be gases, vapours and
liquids.
The CERTEC®measuring cell with rugged ceramic
diaphragm is the sensor element. The process pres-
sure causes a capacity change in the measuring cell
(via the ceramic diaphragm) which is converted into a
4... 20 mA signal.
VEGABAR 14 has a two-wire, 4 ... 20 mA electronics
module for power supply with 12 ... 30 V DC.
Scope of delivery
Power supply
Principle of operation

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Product description
3.3 Adjustment
VEGABAR 14 with plug connection is provided with a
potentiometer for zero point correction. VEGABAR 14
with direct cable outlet has no adjustment functions.
3.4 Storage and transport
Your instrument was protected by packaging during
transport. Its capacity to handle normal loads during
transport is assured by a test acc. to DIN 55489.
The packaging consists of carton, is environment-
friendly and can be recycled. Dispose of the packing
material via specialised recycling companies.
Storage and transport temperature:-40 … 1)
Rel. humidity: 20 … 85 %
Packing
Climatic conditions
1) See Supplement, Technical data, Ambient conditions

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Mounting
4 Mounting
4.1 Mounting procedure
VEGABAR 14 functions in any installation position. It
is mounted acc. to the same guidelines as a manom-
eter (DIN EN 839-2)
According to the application, we recommend block-
ing valve or siphons from VEGA’s line of mounting
accessories.
A welded socket is necessary for mounting
VEGABAR 14.
Use the components from the VEGA accessories:
• welded socket G½G, article no. 2.7783
–> Take note of the valid welding standards (seg-
mental welding procedure).
Use the attached seal:
• process fitting GV and GB:
Tesnit 6.2 x 17.5 1, article no. 2.14815, seal in
front of the thread
• process fitting GP:
Klingersil 21 x 30 x 2, article no. 2.5056, seal be-
hind the thread.
Seal the thread with teflon, hemp or a similar resist-
ant seal material:
• process fitting GN.
Select installation position
Socket welding
Sealing/Screwing

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–> Screw VEGABAR into the welded socket.
–> Tighten the hexagon screw on the process fitting.
• jaw span 27 mm.
Mounting
Fig. 1:
Mounting VEGABAR
max. 50 Nm

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Mounting
4.2 Mounting examples
The following examples show the configuration of
typical measurement sites for pressure measure-
ment. The illustrated accessory is recommended.
The function of the accessory can in some cases
also be achieved by other means (e.g. condensate
receptacle instead of siphon).
Fig. 2:
Mounting on blocking valve for measurement in gases. Mount-
ing position above tapping point enables condensation to flow
back.
Measurement in gases

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Mounting
Fig. 3:
Mounting with blocking valve and siphon in U-form for meas-
urement in vapours
Measurement in vapours
Fig. 4:
Mounting with blocking valve and siphon in circular form for
measurement in vapours

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Mounting
Fig. 5:
Mounting on blocking valve with extended effective pressure
line for measurement in hot gases. Mounting position above
tapping point enables condensation to flow back.
Measurement in hot gases

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Connect power supply
Note safety instructions
Select voltage supply
5 Connect power supply
5.1 Prepare connection
Always observe the following safety instructions:
• Connect only in the complete absence of line volt-
age
• If overvoltages are expected, VEGA overvoltage
arresters should be installed.
Provide a reliable separation between the supply
circuit and the mains circuits acc. to DIN VDE 0106
part 101. The VEGA power supply units VEGATRENN
149AEx, VEGASTAB 690, VEGADIS 371 as well as all
VEGAMETs meet this requirement. When using one
of these instruments, protection class III is ensured
for VEGABAR 14.
Bear in mind the following factors relating to the sup-
ply voltage:
• Reduction of the output voltage of the power sup-
ply unit under nominal load
• Influence of additional instruments in the circuit
(see Technical data).
VEGABAR 14 is connected with standard two-wire
cable. An outer diameter of 5 ... 9 mm ensures the
seal effect of the cable entry.
Select connection cable

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Connect via angle plug
connector acc. to DIN
43650
5.2 Connection procedure
Proceed as follows:
1 Loosen the screw on the rear of the plug connec-
tor
2 Remove plug connector and seal from VEGABAR
3 Lever the plug insert out of the plug housing
Cable entry
Plug housing
Plug insert
Cable entry
Plug housing
Plug insert
Connect power supply
Fig. 6:
Loosen the plug insert
4 Dismantle the connection cable by approx. 5 cm,
strip the wire ends approx. 1 cm
5 Lead the cable through the cable entry and into
the plug housing
6 Connect the wire ends to the screw terminals acc.
to the wiring plan
Fig. 7:
Connection to the screw terminals

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Connect power supply
7 Snap the plug insert into the plug housing and
insert the sensor seal
8 Plug the plug connector onto VEGABAR and
tighten the screw.
The electrical connection is finished.
5.3 Wiring plans
Angle plug connector acc.
to DIN 43560
2
1
3
-
+
Power supply
12 … 30 V DC
Cable outlet
+
+
+
–
–
–
RL
Power supply
12 … 30 V DC
Cable screen
Fig. 8:
Wiring plan for angle plug connector acc. to DIN 43560
Fig. 9:
Wiring plan for direct cable outlet

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Set-up
6 Set-up
After mounting and electrical connection, VEGABAR
14 is ready for operation.
–> Switch on power supply
VEGABAR 14 delivers a current of 4 ... 20 mA ac-
cording to the actual process pressure.
Further settings are not necessary.
Proceed as follows:
1 Loosen the screw on the rear of the plug connec-
tor
2 Remove plug connector and screw
3 Plug the plug connector back in without screw
4 Insert 2 mm screwdriver approx. 45 mm into the
hole of the screw
You will reach this way a small potentiometer
5 Adjust zero point 4 mA ± 1 mA with the variable
potentiometer 1). If necessacry, connect a
handheld in the appropriate measuring range.
Fig. 10:
Adjustment of zero point
6 Tighten the plug screw
1) Always observe: if you set
the zero point to approx.
4.5 mA the sensor con-
sumes at nominal pressure
a current of 20.5 mA
(operating range shift)
Correct zero point

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Maintenance and fault rectification
7 Maintenance and fault rectification
7.1 Maintenance
VEGABAR 14 process pressure transmitters are
maintenance-free
7.2 Fault rectification
Fault Possible reason Rectifying
measure
4 … 20 mA no atmospheric Check pressure
signal pressure compensation compensation with-
transient in the plug or via
capillaries
4 … 20 mA Incorrect connection Check connection
signal is to power supply acc. to chapter 5.3
missing and correct acc. to
chapter 5.2 if
necessary
No power supply Check on line break
and repair if
necessary
Supply voltage too low Check, adapt if
or load resistance too necessary
high
Current signal Electronics module Exchange instru-
23 mA or meas. cell defect ment or return for
repair

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Dismounting
8 Dismounting
8.1 Dismounting procedure
Take note of chapters “4 Mounting“ and “5 Connect
power supply“ and carry out the listed steps in re-
verse order.
8.2 Disposal
VEGABAR 14 consists of materials which can be
recycled by specialised recycling companies. We
have purposely designed the electronic modules to
be easily separable. Mark the instrument as scrap
and dispose of it according to government regula-
tions.
Materials: see technical data
If you cannot dispose of the instrument correctly,
please contact us concerning disposal methods or
return.