702.03.100
Operating instructions
Betriebsanleitung
Mode d'emploi
Manual de instrucciones
Dierential pressure gauge with switch contacts,
model 702.03.100, with component testing
Dierenzdruckmessgerät mit Schaltkontakten,
Typ 702.03.100, mit Bauteilprüfung
Manomètre pour pression diérentielle avec contacts
électriques, type 702.03.100, avec test des composants
Manómetro diferencial con contactos eléctricos,
modelo 702.03.100, con prueba del componente
II 2 GD c
GB
D
F
E
Dierential pressure gauge with two micro switches,
cable terminal box and compression tting with
ferrule option
Operating instructions, dierential pressure gauge
GB
with switch contacts, model 702.03.100 Page 3 - 21
Betriebsanleitung Dierenzdruckmessgerät
D
mit Schaltkontakten, Typ 702.03.100 Seite 22 - 38
Mode d’emploi, manomètre pour pression diérentielle
F
avec contacts électriques, type 702.03.100 Page 39 - 53
Manual de instrucciones para manómetro diferencial
E
con contactos eléctricos, modelo 702.03.100 Página 55 - 85
© 2013 WIKA Alexander Wiegand SE & Co. KG
All rights reserved. / Alle Rechte vorbehalten.
®
WIKA
is a registered trademark in various countries.
®
WIKA
ist eine geschützte Marke in verschiedenen Ländern.
Prior to starting any work, read the operating instructions!
Keep for later use!
Vor Beginn aller Arbeiten Betriebsanleitung lesen!
Zum späteren Gebrauch aufbewahren!
Lire le mode d‘emploi avant de commencer toute opération !
A conserver pour une utilisation ultérieure !
¡Leer el manual de instrucciones antes de comenzar cualquier trabajo!
¡Guardar el manual para una eventual consulta!
2
WIKA operating instructions dierential pressure gauge, model 702.03.100
2367781.03 06/2013 GB/D/F/E
Contents
Contents
1. General information 4
2. Safety 5
3. Specications 8
4. Design and function 9
5. Transport, packaging and storage 10
6. Commissioning, operation 10
7. Options and accessories 15
8. Maintenance 16
9. Dismounting, return and disposal 17
Appendix 1: EC declaration of conformity 18
Appendix 2: Germanischer Lloyd approval 19
GB
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WIKA operating instructions dierential pressure gauge, model 702.03.100 3
1. General information
1. General information
■
GB
The dierential pressure gauge described in the operating instructions
has been designed and manufactured using state-of-the-art technology.
All components are subject to stringent quality and environmental criteria
during production. Our management systems are certied to ISO 9001 and
ISO 14001.
■
These operating instructions contain important information on handling the
instrument. Working safely requires that all safety instructions and work
instructions are observed.
■
Observe the relevant local accident prevention regulations and general safety
regulations for the instrument's range of use.
■
The operating instructions are part of the product and must be kept in the
immediate vicinity of the instrument and readily accessible to skilled personnel
at any time.
■
Skilled personnel must have carefully read and understood the operating
instructions prior to beginning any work.
■
The manufacturer's liability is void in the case of any damage caused by
using the product contrary to its intended use, non-compliance with these
operating instructions, assignment of insuciently qualied skilled personnel
or unauthorised modications to the instrument.
■
The general terms and conditions contained in the sales documentation shall
apply.
■
Subject to technical modications.
■
Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: PV 27.19
Explanation of symbols
WARNING!
... indicates a potentially dangerous situation that can result in
serious injury or death, if not avoided.
Information
... points out useful tips, recommendations and information for
ecient and trouble-free operation.
WIKA operating instructions dierential pressure gauge, model 702.03.1004
2367781.03 06/2013 GB/D/F/E
1. General information / 2. Safety
WARNING!
... indicates a potentially dangerous situation in the hazardous
area that can result in serious injury or death, if not avoided.
2. Safety
WARNING!
Before installation, commissioning and operation, ensure that
the appropriate dierential pressure gauge has been selected in
terms of design and specic measuring conditions.
Check the compatibility with the medium of the materials subjected to pressure!
In order to guarantee the measuring accuracy and long-term stability specied, the corresponding load limits must be observed.
Only work on the gauge with the voltage disconnected.
Non-observance can result in serious injury and/or damage to
the equipment.
Further important safety instructions can be found in the individual chapters of these operating instructions.
2.1 Intended use
This dierential pressure gauge is particularly used for the monitoring and control
of dierential pressures in lter systems, pumps and pipeline systems in the
heating, ventilation and air-conditioning sector, technical building equipment and
in the water management industry.
GB
Instruments per directive 94/9/EC (ATEX) are used in hazardous areas of
industrial applications.
The instrument has been designed and built solely for the intended use described
here, and may only be used accordingly.
The manufacturer shall not be liable for claims of any type based on operation
contrary to the intended use.
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WIKA operating instructions dierential pressure gauge, model 702.03.100 5
2. Safety
2.2 Personnel qualication
GB
WARNING!
Risk of injury should qualication be insucient!
Improper handling can result in considerable injury and damage
to equipment.
■
The activities described in these operating instructions
may only be carried out by skilled personnel who have the
qualications described below.
Skilled personnel
Skilled personnel are understood to be personnel who, based on their technical
training, knowledge of measurement and control technology and on their
experience and knowledge of country-specic regulations, current standards
and directives, are capable of carrying out the work described and independently
recognising potential hazards.
2.3 Safety instructions for pressure gauges per ATEX
WARNING!
Non-observance of these instructions and their contents may result
in the loss of explosion protection.
WARNING!
It is imperative that the application conditions and safety requirements of the EC-type examination certicate are followed.
Pressure gauges must be grounded via the process connection!
2.4 Special hazards
WARNING!
Observe the information given in the applicable type examination
certicate and the relevant country-specic regulations for
installation and use in hazardous areas (e.g. IEC 60079-14, NEC,
CEC). Non-observance can result in serious injury and/or damage
to the equipment.
WARNING!
For hazardous media such as oxygen, acetylene, ammable or
toxic gases or liquids, and refrigeration plants, compressors, etc.,
in addition to all standard regulations, the appropriate existing
codes or regulations must also be followed.
WIKA operating instructions dierential pressure gauge, model 702.03.1006
2367781.03 06/2013 GB/D/F/E
2. Safety
WARNING!
Residual media in dismounted measuring instruments can result in
a risk to persons, the environment and equipment. Take sucient
precautionary measures.
2.5 Labelling / safety marks
Product label
GB
Type of
contact
Date of
manufacture
Pin assignment
Explanation of symbols
CE, Communauté Européenne
Instruments bearing this mark comply with the relevant European
directives.
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WIKA operating instructions dierential pressure gauge, model 702.03.100 7
3. Specications
3. Specications
Specications DELTA-comb model 702.03.100
GB
Nominal size mm Dierential pressure indication: Ø 100
mm Working pressure indication: Ø 23
Accuracy class Dierential pressure indication: 2.5
Working pressure indication: 4
Scale ranges per EN 837 bar Dierential pressure: 0 ... 0.25 to 0 ... 6
bar Working pressure: 0 ... 25
Max. working pressure
(stat.)
Overpressure safety bar Either side max. 25
Permissible temperature °C Ambient: -10 ... +70
Ingress protection IP 65 per EN 60529/IEC 529
Media chamber wetted GD-AISi 12 (Cu) 3.2982, black lacquered
Process connections wetted 2 x G 1/4 female, lower mount (LM), in-line, centre
Pressure elements wetted Dierential pressure: Compression spring from
Transmission parts wetted Stainless steel 1.4305, FPM/FKM (option: NBR)
Sealings wetted FPM/FKM (option: NBR)
Movement Cu-alloy, wear parts argentan
Dial Dierential pressure indication: Aluminium, blue,
Pointer Dierential pressure indication: Adjustable pointer,
Zero adjustment for
dierential pressure
indication
Case GD-AISi 12 (Cu) 3.2982, black lacquered
Window PMMA
Weight kg approx. 1.4
bar 25
°C Medium: max. +90
distance 26 mm
stainless steel 1.4310 or FD SiCr EN 10270-2
and separating diaphragm from FPM/FKM
fabric-reinforced (option: NBR)
Working pressure: Bourdon tube from Cu-alloy
white lettering
Working pressure indication: Plastic, white, black
lettering
aluminium, white
Working pressure indication: Plastic, black
By means of adjustable pointer
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WIKA operating instructions dierential pressure gauge, model 702.03.1008
3. Specications / 4. Design and function
Electrical contact
Type of contact Micro switch
Contact functions Single (change-over) contact
850.3
Load data Voltage AC Voltage DC
U max. 250 V 30 V
I max. 5 A 0.4 A
P max. 250 VA 10 W
Switch point setting from the outside at assistant scale by means of adjustment
screw(s)
Setting range from 10 % to 100 % of the full scale value
Switch point
reproducibility
Switch hysteresis max. 5 % of the full scale value (option: max. 2.5 %)
Electrical connection via cable gland M20 x 1.5 with 1 m free cable end
≤ 1.6 %
Double (change-over) contact
850.3.3
For further specications see the corresponding product label, WIKA data sheet
and the order documentation.
4. Design and function
4.1 Description
The ⊕ and ⊖ media chambers
are separated by an elastic diaphragm. The dierential pressure leads to an axial deection
of the the diaphragm against
the measuring range spring.
The deection, which is
proportional to the dierential
pressure, is transmitted to
a movement and in addition
to the plungers of the micro
switches via a pressure-tight
and low friction link.
GB
2122740.01
4.2 Scope of delivery
Cross-check scope of delivery with delivery note.
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WIKA operating instructions dierential pressure gauge, model 702.03.100 9
5. Transport, packaging ... / 6. Commissioning, operation
5. Transport, packaging and storage
5.1 Transport
GB
Check the dierential pressure gauge for any damage that may have been
caused by transport. Obvious damage must be reported immediately.
5.2 Packaging
Do not remove packaging until just before mounting.
Keep the packaging as it will provide optimum protection during transport (e.g.
change in installation site, sending for repair).
5.3 Storage
Permissible conditions at the place of storage
Storage temperature: -20 ... +60 °C
In order to prevent damage, the following points should be noted for the
storage of the pressure gauges:
■
Leave the pressure gauges in their original packaging
■
Following any possible removal of the measuring instruments, e.g. for testing,
the instrument should again be stored in its original packaging
Avoid exposure to the following factors:
■
Direct sunlight or proximity to hot objects
■
Mechanical vibration, mechanical shock (putting it down hard)
■
Soot, vapour, dust, humidity and corrosive gases
■
Potentially explosive environments, ammable atmosphere
WARNING!
Before storing the instrument (following operation), any residual
media must be removed. This is of particular importance if the
medium is hazardous to health, e.g. caustic, toxic, carcinogenic,
radioactive, etc.
6. Commissioning, operation
6.1 Mechanical connection
■
In accordance with the general technical regulations for pressure gauges (e.g.
EN 837-2 "Selection and installation recommendations for pressure gauges").
■
Process connections 2 x G 1/4 female, lower mount (LM), in-line, centre
distance 26 mm, operating position NL 90 (nominal position) per DIN 16257
(i.e. vertical dial), design the threads of the pressure connection in accordance
with EN 837-3 (section 7.3.2).
WIKA operating instructions dierential pressure gauge, model 702.03.10010
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6. Commissioning, operation
■
Prior to the installation of the pressure gauge, clean the measuring lines
thoroughly by tapping and blowing or rinsing
■
Protect measuring instruments from contamination and high temperature
changes!
■
The pressure gauge must be mounted free from vibration and should be
aligned so that it is easy to read. It is recommended that an isolation device is
interposed between the pressure tapping point and the pressure gauge, which
will enable the replacement of the pressure gauge and a zero point check while
the plant is running. The instruments should be protected against coarse dirt
and wide uctuations in ambient temperature.
■
Correct sealing of the connections must be made using suitable at gaskets,
sealing rings or WIKA prole sealings. In order to orientate the gauge so that
the on-site display can be read as well as possible, a clamp socket or union nut
should be used. When screwing on and unscrewing the pressure gauges they
should not be gripped by the case, but rather only on the spanner ats of the
connection!
Wall mounting
Mounting using three integrally cast mounting lugs
GB
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WIKA operating instructions dierential pressure gauge, model 702.03.100 11
2123541.01
6. Commissioning, operation
Measuring assemblies
The preferred measuring assemblies for various possible applications are
specied in DIN 19216.
GB
The following schematic diagram shows a recommended assembly for liquid
media. As throttling devices, dierential pressure transducers should be provided
in accordance with DIN 1952 (issue 07.82), now replaced by EN 5167/1.
The dierential pressure lines must be made from metal, their bore must not
be less than 4 mm and the eective length between the valve manifold and the
dierential pressure gauge must be at least 500 mm.
In addition, the length and the bore of
the pressure lines should be such that,
with cold lines, the response time of
the pressure gauge is not more than 5
seconds.
The connections of the dierential
Dierential pressure
transducer
(throttling device in the
process line)
Dierential pressure
line
pressure lines must be welded, brazed or
screwed using metal sealing elements.
Shut-o valves
Shut-o valves in dierential pressure
(valve manifold)
lines must only be operated using tools.
Dierential pressure
instrument
(Dierential pressure
gauge DELTA-comb)
6.2 Electrical connection
■
The electrical connection must only be made by qualied skilled personnel.
■
Connection details and switching functions are given on the product label.
Connection terminals and earth terminal are appropriately marked.
■
The mains connection lines to be provided must be dimensioned for maximum
instrument power consumption and comply with IEC 227 or IEC 245.
■
The instruments must be connected to the equipotential bonding of the plant.
Performance data (see „Specications“)
WIKA operating instructions dierential pressure gauge, model 702.03.10012
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6. Commissioning, operation
Safety instructions for installation
■
Follow the installation and safety instructions within the
operating instructions.
■
Install instruments in accordance with the manufacturer's
instructions and the valid standards and regulations.
■
The instruments do not provide for incorporated overcurrent protectors!
■
In order to prevent the contacts from welding through overload, suitable
protection systems must be implemented by the operator!
Precise wiring schemes can be seen in the following connection diagram. In
addition both the pin assignment and the required power supply are stated on
the product label of the case circumference.
Electrical connection via:
■
Terminal box or angular connector per DIN 43651
GB
2157306.0X2123568.0X
850.33 2nd contact
850.3 1st contact
M20 x 1.5
Cable terminal box
or electrical connection via:
■
Cable gland and cable
Cable gland M20 x 1.5
with 1 m cable
850.3 1st
contact
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WIKA operating instructions dierential pressure gauge, model 702.03.100 13
850.33
2nd
contact
2162679.01
2162679.0X
6. Commissioning, operation
Information
For the safety circuit, which will switch o the heating if the
GB
6.3 Switch point setting and zero point test
The switch points are set at the factory when the set points are given.
The adjustment of the switch point is made by the adjustment screws accessible
from the front. An assistant scale over 270 ∢° enables a relatively accurate
adjustment of the switch points and indicates the set point that is currently
adjusted.
For contact adjustment, the vent plugs in the snap-in disc should be removed. By
turning the contact adjustment screws using a screwdriver the desired switch point
can be set.
If an even more accurate switch point setting is required, a reference standard
should be used for the adjustment.
Afterwards, the vent plugs should be pressed back into the snap-in disc.
Following the setting and the testing of the switch point in the equipment, the
instrument must be sealed and the set value marked on the instrument.
Zero point test
By opening a pressure compensating valve (see point 7.1 on page 15) a zero
point check during the running process is possible.
The medium ows from the higher-pressure side towards the opposite side and
the dierential pressure at the gauge drops to zero.
steam generator falls below the minimum ow, only the normally
open contact of the changeover switch should be connected (i.e.
with Δp = 0 open circuit)!
By opening the pressure compensating valve, the dierential pressure indicator
must drop to zero, i.e. into the area of the zero-point tolerance bar. The instrument
function is thus in order. With possible deviations, which are outside the tolerance
bar, a zero adjustment can be made using the standard built-in adjustable pointer.
To do this the snap-in disc should be lifted o,
using a screwdriver in the appropriate impression/
recess.
The zero adjustment is achieved by turning the
slotted screw on the adjustable pointer.
Afterwards, the snap-in disc should replaced on
the case.
The dierential pressure will be displayed again
Slotted screw
as soon as the pressure compensating valve is
closed once more.
WIKA operating instructions dierential pressure gauge, model 702.03.10014
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6. Commissioning, operation / 7. Options and accessories
Commissioning
During the commissioning process pressure surges must be avoided at all costs.
Open the shut-o valves slowly.
7. Options and accessories
7.1 4-way valve manifold
■
Isolation of the ⊕ and ⊖ process lines for removing or testing the measuring
instrument without interrupting the running process operation.
Protection of the unit against excessive
overpressure loading, such as in pressure
tests and undened operating conditions
(including intermittent shutdown).
Pressure compensating valve
GB
■
Pressure compensation for zero point
checking with running processes, and avoid-
Shut-o valve
⊕ side
ing one-sided overpressure loading during
start-up and operation phases (with opened
pressure compensating valve).
■
Venting the measuring lines with liquid media and ushing of the measuring lines, in
order to remove contamination.
Shut-o valve
⊖ side
Vent valve
Specications for handling
■
Sequence of operations to start measurement
1. Open the pressure compensating valve (middle valve spindle)
2. Open the shut-o valve for the negative media chamber (⊖, right-hand valve)
and the positive media chamber (⊕, left-hand valve)
3. Close the pressure compensating valve
■
Sequence of operations to ush/vent the measuring lines
1. Start: Open the shut-o valve for the ⊕ and ⊖ media chamber, open the
pressure compensating valve and vent valve
2. Finish: Close the pressure compensating valve and vent valve
■
Sequence of operations to nish measurement (also temporary shutdown)
1. Open the pressure compensating valve
2. Close the shut-o valve for the ⊕ and ⊖ media chamber
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WIKA operating instructions dierential pressure gauge, model 702.03.100 15
7. Options and accessories / 8. Maintenance
■
Sequence of operations to dismount the measuring instrument with a
running process
GB
1. Open the pressure compensating valve
2. Close the shut-o valve for the ⊕ and ⊖ media chamber
3. Open the vent valve
7.2 Panel mounting ange
Cutout
Panel
8. Maintenance
2123649.0X
The instruments are maintenance-free.
The indicator and switching function should be checked once or twice every year.
For this the instrument must be disconnected from the process to check with a
pressure testing device.
Repairs must only be carried out by the manufacturer.
WIKA operating instructions dierential pressure gauge, model 702.03.10016
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9. Dismounting, return and disposal
9. Dismounting, return and disposal
WARNING!
Residual media in dismounted measuring instruments can result
in a risk to persons, the environment and equipment.
Take sucient precautionary measures.
9.1 Dismounting
Only disconnect the measuring instrument once the system has been depressurised and the power disconnected!
If necessary, the measuring line must have strain relief. For pressure gauges with
diaphragm pressure elements, the clamping bolts of the upper and lower ange
must not be loosened.
9.2 Return
Wash or clean the dismounted measuring instrument before returning it, in order
to protect personnel and the environment from exposure to residual media.
9.3 Disposal
Incorrect disposal can put the environment at risk. Dispose of instrument
components and packaging materials in an environmentally compatible way and
in accordance with the country-specic waste disposal regulations.
GB
2367781.03 06/2013 GB/D/F/E
WIKA operating instructions dierential pressure gauge, model 702.03.100 17
Appendix 1: EC declaration of conformity
GB
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WIKA operating instructions dierential pressure gauge, model 702.03.10018
Appendix 2: Germanischer Lloyd approval
GB
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WIKA operating instructions dierential pressure gauge, model 702.03.100 19
Appendix 2: Germanischer Lloyd approval
GB
2367781.03 06/2013 GB/D/F/E
WIKA operating instructions dierential pressure gauge, model 702.03.10020
Inhalt
Inhalt
1. Allgemeines 22
2. Sicherheit 23
3. Technische Daten 26
4. Aufbau und Funktion 27
5. Transport, Verpackung und Lagerung 28
6. Inbetriebnahme, Betrieb 28
7. Optionen und Zubehör 33
8. Wartung 34
9. Demontage, Rücksendung und Entsorgung 35
Anlage 1: EG-Konformitätserklärung 36
Anlage 2: Zulassung Germanischer Lloyd 37
D
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WIKA Betriebsanleitung Dierenzdruckmessgerät, Typ 702.03.100 21
1. Allgemeines
1. Allgemeines
■
Das in der Betriebsanleitung beschriebene Dierenzdruckmessgerät wird nach
dem aktuellen Stand der Technik konstruiert und gefertigt.
Alle Komponenten unterliegen während der Fertigung strengen Qualitätsund Umweltkriterien. Unsere Managementsysteme sind nach ISO 9001 und
D
ISO 14001 zertiziert.
■
Diese Betriebsanleitung gibt wichtige Hinweise zum Umgang mit dem Gerät.
Voraussetzung für sicheres Arbeiten ist die Einhaltung aller angegebenen
Sicherheitshinweise und Handlungsanweisungen.
■
Die für den Einsatzbereich des Gerätes geltenden örtlichen Unfallverhütungsvorschriften und allgemeinen Sicherheitsbestimmungen einhalten.
■
Die Betriebsanleitung ist Produktbestandteil und muss in unmittelbarer Nähe
des Gerätes für das Fachpersonal jederzeit zugänglich aufbewahrt werden.
■
Das Fachpersonal muss die Betriebsanleitung vor Beginn aller Arbeiten sorgfältig durchgelesen und verstanden haben.
■
Die Haftung des Herstellers erlischt bei Schäden durch bestimmungswidrige
Verwendung, Nichtbeachten dieser Betriebsanleitung, Einsatz ungenügend
qualizierten Fachpersonals sowie eigenmächtiger Veränderung am Gerät.
■
Es gelten die allgemeinen Geschäftsbedingungen in den Verkaufsunterlagen.
■
Technische Änderungen vorbehalten.
■
Weitere Informationen:
- Internet-Adresse: www.wika.de / www.wika.com
- zugehöriges Datenblatt: PV 27.19
Symbolerklärung
WARNUNG!
… weist auf eine möglicherweise gefährliche Situation hin, die
zum Tod oder zu schweren Verletzungen führen kann, wenn sie
nicht gemieden wird.
Information
… hebt nützliche Tipps und Empfehlungen sowie Informationen
für einen ezienten und störungsfreien Betrieb hervor.
WIKA Betriebsanleitung Dierenzdruckmessgerät, Typ 702.03.10022
2367781.03 06/2013 GB/D/F/E
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