WIKA PGT15 User Manual [en, de, es, fr]
Operating Instructions
Betriebsanleitung
Mode d´emploi
Manual de instrucciones
Bourdon Tube Pressure Gauges with Stepped Electrical
Output Signal, Model PGT15 (LOG-1x)
Rohrfederdruckmessgeräte mit gestuftem elektrischem
Ausgangssignal, Typ PGT15 (LOG-1x)
Manomètre à tube manométrique avec signal de sortie
électrique échelonné, Type PGT15 (LOG-1x)
Manómetro con muelle tubular con señal eléctrica de
salida escalonada, Modelo PGT15 (LOG-1x)
1
E
110 R-000154
intelliGAUGE Typ PGT15 (LOG-1x)
GB
D
F
E
Operating instructions intelliGAUGE
GB
Model PGT15 (LOG-1x)
Betriebsanleitung intelliGAUGE
D
Typ PGT15 (LOG-1x)
Mode d´emploi intelliGAUGE
F
Type PGT15 (LOG-1x)
Manual de instrucciones intelliGAUGE
E
Modelo PGT15 (LOG-1x)
Page 3-10
Seite 11-18
Page 19-26
Página 27-34
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Contents
Contents
Contents
1. Safety instructions 4
2. Operating principle 4
3. Installation instruction 5
4. Installation and commissioning 6
5. Measuring arrangements 7
6. Electrical connection 8
7. Servicing / Maintenance / Cleaning / Repairing 9
8. Storage 9
9. Troubleshooting 10
10. Technical data 10
Information
This symbol provides you with information, notes and tips.
Warning!
This symbol warns you against actions that can cause
injury to people or damage to the instrument.
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1. Safety instructions / 2. Operating principle
1. Safety instructions
The appropriate national safety regulations (e.g. EN 837-2
"Selection and installation recommendations for pressure
gauges") must be observed when installing, commissioning and operating these devices.
Serious injuries and / or damage may occur should the appropriate
regulations not be observed.
Only appropriately qualified personnel should work on these
instruments.
The effective maximum surface temperature is not dependant upon
the device, but mainly on the temperature of the respective pressure medium! In the case of gaseous substances, the temperature
may increase due to compression warming. In these cases it may
be necessary to throttle the rate of change of pressure or reduce
the permissible temperature of the pressure medium.
2. Operating principle
Bourdon tubes are widely used as measuring elements for technical
pressure measurement due to their robustness and ease-of-use. Under
the influence of pressure these measuring elements will deform within
their elastic range.
This movement is converted into a rotary motion by means of a mechanical movement (gear). A "masking element", mounted on the pointer,
rotates with the instrument pointer in direct linear proportion to the pocess
pressure. The electronics, placed opposite the pointer, are equipped with
an infrared LED and infrared photodiodes.
When there is no pressure, the "masking element" on the pointer prevents
the light from the LED reaching the photodiodes. When the pressure increases, the pointer rotates, and with it, the „masking element“. Thus, as the
pressure rises, successively more photodiodes are illuminated by the light
emmitted from the LED, and this is converted into an electrical signal.
Through the electronics, the signals from the photodiodes which are
proportional to the pointer position are converted into a stepped electrical
output sigal.
An intelliGAUGE line pressure gauge with electrical output signal
combines all the advantages of an on-site display without the need for an
external power supply, with the demands of modern electronic measurement for electrical signal transmission.
3. Installation instructions
3. Installation instructions
Installation
Nominal position acc. EN 873-3 / 9.6.6 figure 7: 0° or 90°
Pressure connector bottom or rearside
Permissible vibration load at the mounting point
The instrument should always be installed in locations free of vibration.
If necessary, it is possible to isolate the instrument from the mounting
point by installing a flexible connection line between the measuring
point and the pressure gauge and mounting the instrument on a
suitable bracket.
If this is not possible, the following limit values must not be exceeded:
Frequency range 10 … 150 Hz
Accelaration < 0.5 g (5.0 m/s
Test connector
At certain use cases (e.g. steam vessels) isolating devices have to
have a test connector, so that the instrument can be checked without
dismounting.
Mounting provisions
If the line for the pressure gauge is not rigid enough for vibration-free
installation, fasten the instrument using appropriate fastening elements for
wall and / or pipe mounting, and, if necessary, by means of a capillary line.
Measuring system damping
If it is not possible to avoid vibration by means of appropriate mounting,
use pressure gauges with liquid filling.
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3. Installation instructions
Effects of temperature
The mounting of the pressure instrument has to be done in a way that the
operating temperature is neither exceeded nor falls below the permissible
operating temperature, even in consideration of thermal convection and
thermal radiation. Tailpipes of a suitable length or syphons may be used
to protect the pressure instrument and the isolating device.
The influence of the temperature onto the accuracy of indication and of
measurement has to be noticed.
Diaphragm seal / protective barrier
In case of aggressive, hot, highly viscous, contaminated or crystallizing
pressure media, which must not be allowed to intrude the measurign
element, diaphragm seals have to be used as separating barrier. A
neutral transmission fluid, used to transmit the pressure to the measuring
element, should be selected in consideration of the measuring range, the
temperature and its compatibility with the pressure media.
The connection between the pressure gauge and the diaphragm seal
must not be released by no means.
Protection of the measuring element against overload
If the pressure media is subject to rapid pressure changes or pressure
impulses may be expected, these must not act directly upon the measuring element. The effect of pressure impulses must be damped, e.g. by
installing an integrated restrictor screw (reduction of the cross section
in the pressure channel) or by connecting an adjustable throttle device
in series.
Pressure test connection
The pressure test connection, with a sufficiently large bore size (≥ 6 mm
diameter), should be arranged, as far as possible, over a shut-off device,
in a position where the accuracy of the reading will not be affected by the
flow of the media being measured. The pipe between the pressure test
connection and the pressure instrument should have an inner diameter
large enough to avoid blockages or delays in pressure transmission. Also
it should not have any sharp bends. It is recommended that it is mounted
with a steep incline of approx. 1:15.
Piping
The piping should be arranged and fitted so that it can withstand the
stresses caused by expansion, vibration and the influence of heat. When
the media is gaseous, a water drain point should be provided at the
lowest point. For liquid pressure media, an air bleed should be provided
at the highest point.
4. Installation and commissioning
4. Installation and commissioning
To acchieve a correct sealing of pressure connections suitable sealing
rings, sealing washers or WIKA profile seals have to be used. In order
to get the pressure instrument into an orientation that allows to read the
on-site indicator the best, a connector with an adjusting nut or an union
nut is recommended. When mounting and dismounting it is not allowed to
tighten the pressure instruments by using the housing, but on the spanner
flats of the stem, only.
Installation with
spanner
If the pressure instrument is positioned lower than the pressure test
connection, the tailpipe has to be rinsed thoroughly prior to fitting the
gauge to remove all foreign substances.
Once the pressure and electrical connections have been made, the
transmitter is ready for immediate use.
Before dismounting the pressure instrument the measuring element has to
be depressurized. Eventually the stress of the pipe has to be relieved.
Residual pressure medium remaining within the pressure
element may cause harm to men, facilities and environment.
Therefore sufficient precautionary measures have to be
taken.
Pressure connector
In accordance with the general technical regulations for pressure gauges
(e.g. EN 837-2 „Selection and installation recommendations for pressure
gauges“).
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5. Measuring arrangements / 6. Electrical connection
5. Measuring arrangements
Proven measuring arrangements for various types of media.
Contents of
tailpipe
Typically
Pressure
instrument
higher than
tapping point
Pressure instrument lower
than tapping
point
6. Electrical connection
The electrical connection of pressure gauges with an electrical output
signal is made via a cable with a model JST XH, 3-pin connector fitted to
it. The correct terminal connections can be seen in the table below.
Additionally the terminal assignment, output signal and necessary supply
voltage are written on the product label.
3-pin connector, model JST XH
Pin Signal
1 U
2 GND
3 U
Liquid media Gaseous media
Liquid Liquid
Condensate
B+
SIG+
with
vapour
Boiling
liquid
Vapour
Gas only Wet gas Liquid
only
Liquefied
Dry air Moist air,
gas
Flue gas
gas condensate
Steam
7. Maintenance, Servicing, Cleaning, Repairing / 8. Storage
7. Maintenance, Servicing, Cleaning, Repairing
Always open isolating devices gently, never abruptly, since this may
generate sudden pressure surges that may damage the gauge.
Pressure instruments with an electrical output signal require no maintenance and offer a long service life, if handled and operated properly. If the
zero point drifts, it means that the instrument has been overloaded.
Clean the instrument with a moistened cloth. If badly soiled, moisten the
cloth thoroughly with soapy water.
Repairs should be only be carried out by the manufacturer or by appropriately trained staff.
8. Storage
Before the system is stored, all traces of any medium
residue must be removed. This is particularly important,
if the media is a health hazard such as corrosive, toxic,
carcinogenic, radioactice, etc.
Before installation, in order to prevent damage to the pressure instrument, the following points should be observed:
The pressure instrument should be left in its original packaging until
installation.
After taking the instrument out (e.g. for test), reuse the original
packaging material.
The storage temperature should not be less than -40 °C or more
than +90 °C
Avoid the following influences:
Direct sunlight or vicinity to hot objects
Mechanical vibration
Sot, steam, dust, humidity and corrosive gasses
Potentially explosive environment, inflammable atmospheres
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9. Trouble shooting / 10. Technical data
9. Trouble shooting
Malfunction Possible cause Measure
GB
No output signal
Steady signal despite
pressure changes
Excessively high,
steady signal despite
pressure changes
Full span reading
too low
Zero signal too low /
troo high
10. Technical data
For technical data please refer to the technical data sheet.
PV 11.04
Model PGT15 (LOG-1x),
intelliGAUGE, Bourdon Tube Pressure Gauges with
Stepped Electrical Output Signal
WIKA Operating instructions intelliGAUGE Model PGT15 (LOG-1x)
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Failure of power supply
or wiring interrupted
Electronic defect
through incorrect
supply voltage or
external voltage
Pressure entry blocked Check tailpipes and
Electronic defect
through incorrect
supply voltage or
external voltage
Supply voltage too low Adjust supply voltage
Load impedance
too high
Zero point shifted Return instrument to
Zero point shifted Return instrument to
, NS 50
Check power supply and
wiring; replace defective
components
Return instrument to
manufacturer for repair
pressure entry bore, if necessary clean it carefully
Return instrument to
manufacturer for repair
Consider max. permissible load
manufacturer for repair
manufacturer for repair
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Inhalt
Inhalt
Inhalt
1. Sicherheitshinweise 12
2. Funktionsprinzip 12
3. Montagehinweise 13
4. Montage und Inbetriebnahme 15
5. Messanordnung 15
6. Elektrischer Anschluss 16
7. Bedienung / Wartung / Reinigung / Reparatur 17
8.
Lagerung 17
9. Maßnahmen bei Störungen 18
10. Technische Daten 18
Information
Dieses Zeichen gibt Ihnen Informationen, Hinweise oder
Tipps.
Warnung!
Dieses Symbol warnt Sie vor Handlungen, die Schäden an
11412101 09/2009 GB/D/F/E
Personen oder am Gerät verursachen können.
WIKA Betriebsanleitung intelliGAUGE Typ PGT15 (LOG-1x)
D
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