WIKA WUD-20 User manual

Operating instructions
Betriebsanleitung
EN
DE
Model WUD-20 Model WUD-25 Model WUD-26
Ultra High Purity Transducer, Typ WUD-2x
Ultra High Purity transducer, model WUD-2x

2WIKA operating instructions Ultra High Purity transducer, model WUD-2x
EN
DE
11611057.05 08/2021 EN/DE
Operating instructions model WUD-2x Page 1 - 36
Betriebsanleitung Typ WUD-2x Seite 37 - 71
© 11/2013 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!

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1. General information........................................................................4
2. Design and function .......................................................................5
2.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Description ..............................................................................6
2.3 Scope of delivery .........................................................................6
3. Safety....................................................................................6
3.1 Explanation of symbols .................................................................... 6
3.2 Intended use ............................................................................7
3.3 Improper use ............................................................................8
3.4 Personnel qualification ....................................................................8
3.5 Labelling, safety markings..................................................................9
3.6 Ex marking .............................................................................10
4. Transport, packaging and storage...........................................................11
4.1 Transport. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Packaging and storage ...................................................................11
5. Commissioning, operation .................................................................12
5.1 Mechanical mounting ....................................................................13
5.2 Electrical mounting ......................................................................14
5.3 Menu navigation, operation................................................................19
5.4 Setting the zero point.....................................................................25
6. Faults...................................................................................25
7. Maintenance and cleaning .................................................................28
7.1 Maintenance ...........................................................................28
7.2 Cleaning ...............................................................................29
8. Dismounting, return and disposal...........................................................30
8.1 Dismounting ............................................................................30
8.2 Return.................................................................................31
8.3 Disposal ...............................................................................31
9. Specifications............................................................................32
Appendix 1: EC Declaration of conformity model WUD-2x ..........................................70
Appendix 2: Control drawing 14097836 ..........................................................71
Contents
Contents

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1. General information
■The transducer 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 certified 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. Pass the operating instructions
onto the next operator or owner of the instrument.
■Skilled personnel must have carefully read and understood the operating instructions prior to
beginning any work.
■The general terms and conditions contained in the sales documentation shall apply.
■Subject to technical modifications.
■Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: PE 87.08
- Application consultant: Tel.: [phone]
Fax: [phone]
[e-mail]
1. General information

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2. Design and function
2.1 Overview
Display Spanner flats Main key
Zero point adjustment Process connection (depending on version) Down key
Product label Status LEDs Up key






 

2. Design and function

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2. Design and function / 3. Safety
2.2 Description
The transducer is an electronic pressure measuring instrument with a digital display.The applied
pressure is converted into an analogue electrical output signal. The analogue output signal is picked up
through a plug connection. Using the digital display, the pressure can be read directly from the pressure
measuring instrument.
Optionally 2 settable switching outputs are available.
Functions
■Analogue output signal
■2 switching outputs (optional)
■Display
■Switching functions (hysteresis, delay (damping)
■Zero point adjustment
2.3 Scope of delivery
■Transducer
■Protection cap for process connection
■Operating instructions
Cross-check scope of delivery with delivery note.
3. Safety
3.1 Explanation of symbols
DANGER!
... indicates a potentially dangerous situation in the hazardous area that results in serious
injury or death, if not avoided.

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WARNING!
... indicates a potentially dangerous situation that can result in serious injury or death, if not
avoided.
CAUTION!
... indicates a potentially dangerous situation that can result in light injuries or damage to
equipment or the environment, if not avoided.
Information
... points out useful tips, recommendations and information for efficient and trouble-free
operation.
3.2 Intended use
The transducer is an electronic pressure measuring instrument for indoor use.The areas of use are
industrial applications within clean rooms. Gaseous or liquid media can be measured.
Only use the transducer in applications that lie within its technical performance limits. Compatibility of
the media and the materials must be checked by the operator.
→ Performance limits see chapter 9 “Specifications”.
For applications in hazardous areas
Within Class 1 Division 2 hazardous areas, only install and operate transducers with FM marking.
For marking, see chapter 3.5 “Labelling, safety markings”.
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.
3. Safety

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3.3 Improper use
WARNING!
Injuries through improper use
Improper use of the instrument can lead to hazardous situations and injuries.
▶Refrain from unauthorised modifications to the instrument.
▶Do not use the instrument within hazardous areas, if it is not correspondingly marked.
Any use beyond or different to the intended use is considered as improper use.
3.4 Personnel qualification
WARNING!
Risk of injury should qualification be insufficient
Improper handling can result in considerable injury and damage to equipment.
▶The activities described in these operating instructions may only be carried out by
personnel who have the qualifications described below.
Skilled electrical personnel
Skilled electrical personnel are understood to be personnel who, based on their technical training,
know-how and experience as well as their knowledge of country-specific regulations, current standards
and directives, are capable of carrying out work on electrical systems and independently recognising
and avoiding potential hazards.The skilled electrical personnel have been specifically trained for the
work environment they are working in and know the relevant standards and regulations.The skilled
electrical personnel must comply with current legal accident prevention regulations.
Special knowledge for working with instruments for hazardous areas:
The skilled electrical personnel must have knowledge of ignition protection types, regulations and provi-
sions for equipment in hazardous areas.
Special operating conditions require further appropriate knowledge, e.g. of aggressive media.
3. Safety

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3. Safety
3.5 Labelling, safety markings
P # Product number
S # Serial number
Supply voltage
Output signal
Model Accuracy
Zero point setting Approvals
Pin assignment Coded manufacture date
Measuring range
Symbols
Before mounting and commissioning the instrument, ensure you read the operating
instructions!
Instruments bearing this mark comply with the relevant European directives.
FM, Factory Mutual
The instrument was inspected and certied by FM Approvals.
Instruments bearing this mark comply with the applicable US standards on safety
(including explosion protection).
Made in Germany
WIKA Alexander Wiegand SE & Co. KG 63911 Klingenberg








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3. Safety
3.6 Ex marking
DANGER!
Danger to life due to loss of explosion protection
Non-observance of these instructions and their contents may result in the loss of explosion
protection.
▶Observe the safety instructions in this chapter and further explosionprotective instruc-
tions in these operating instructions.
▶Observe the information given in the applicable type examination certificate and the
relevant country-specific regulations for installation and use in hazardous areas (e.g.
IEC 60079-14, NEC, CEC).
Check whether the classification is suitable for the application. Observe the relevant national regulations.
NI CL I DIV 2 Grp A, B, C, D
Marking Designation Significance
NI Non-incendive Non-incendive
CL I Class 1 Explosive gases, vapours
DIV 2 Divison 2 Temporarily hazardous
Grp A, B, C, D Explosion groups A, B, C, D All gases and vapours
Temperature class Maximum permissible ambient temperature
T4 -10 ... +60 °C [14 ... 140 °F]
T5 -10 ... +60 °C [14 ... 140 °F]
T6 -10 ... +40 °C [14 ... 104 °F]

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4. Transport, packaging and storage
4.1 Transport
CAUTION!
Damage through improper transport
With improper transport, damage to property can occur.
▶When unloading packed goods upon delivery as well as during internal transport,
proceed carefully and observe the symbols on the packaging.
▶With internal transport, observe the instructions in chapter 4.2 “Packaging and storage”.
Before transport
1. Place the protection cap onto the process connection.
2. Pack the transducer in accordance with clean room specifications.
3. Protect against impacts and dropping.
After transport
▶Check the transducer for any damage that may have been caused by transport.
Obvious damage must be reported immediately.
▶If the instrument is transported from a cold into a warm environment, the formation of condensation
may result in instrument malfunction. Before putting it back into operation, wait for the instrument
temperature and the room temperature to equalise.
4.2 Packaging and storage
Do not remove packaging until within the clean room and just before mounting.
Keep the packaging as it will provide optimum protection during transport (e.g. change in installation
site, sending for repair).
Permissible conditions at the place of storage:
Storage temperature: -10 ... +60 °C [14 ... 140 °F]
Humidity: 35 ... 85 % relative humidity (no condensation)
4. Transport, packaging and storage

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Avoid exposure to the following factors:
■Direct sunlight or proximity to hot objects
■Mechanical vibration, mechanical shock (putting it down hard)
■Soot, vapour, dust and corrosive gases
Store the instrument in its original packaging in a location that fulfils the conditions listed above. If the
original packaging is not available, pack and store the instrument as described below:
1. Place the protection cap onto the process connection.
2. Pack the instrument in an antistatic plastic film in accordance with clean room specifications.
3. Place the instrument, along with the shock-absorbent material, in the packaging.
4. If stored for a prolonged period of time (more than 30 days), place a bag containing a desiccant inside
the packaging.
5. Commissioning, operation
DANGER!
Potentially explosive atmosphere
Explosion
▶Only use transmitters which are marked as suitable for use in hazardous areas.
▶Before commissioning, ensure that the surrounding environment is free from any
hazardous atmosphere.
▶If there is any doubt, obtain a hot-working permit.
4. Transport, packaging and storage / 5. Commissioning, operation

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5.1 Mechanical mounting
CAUTION!
Improper mounting
Transducer is damaged.
▶Remove the protection cap not until shortly before mounting.
▶Protect the case from any forces being applied (e.g. lever force).
▶Do not cross the threads.
Tools required
■Flats 16 and flats 19 open-ended spanner
■Screwdriver 1 ... 1.5 mm
■Scissors
■Set of hexagon wrench keys (for WUD-26)
Model WUD-20, single end
▶Tighten the transducer using the spanner flats.
The correct torque depends on the dimensions of the process connection and the gasket used
(form/material). Observe the manufacturer‘s instructions for the connections.
Model WUD-25, flow through
1.Tighten the union nut hand-tight and align the instrument.
2.Tighten the union nut.
Welding Connections (only WUD-20, WUD-25)
The weld needs to be fully penetrating, but amperage and heat need to be minimised. We recommend
flowing Argon gas through the transducer during welding.This will help to cool the transducer. Prior to
welding tubing to the transducer, it is recommended that a few test welds be made.
5. Commissioning, operation

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WARNING!
■Make sure the transducer is not connected to any other device, prior to arc welding.
■Disconnect the transducer from any electrical device.
■The operator is responsible for the material compatibility as well as correct handling,
operation and maintenance.
Prepare the transducer for use
1. Adjust the zero point (please refer to chapter Zero Adjustment).
2.Verify integrity of the weld or seal by appropriate helium leak-testing procedures.
3.Turn the gas flow ON then OFF, 10 times to remove any particles generated during installation. (The
flow rate used should at least equal the process flow specifications.)
MSM, Modular Surface Mount (only WUD-26)
Please observe the corresponding technical specifications, such as torques and mounting position of the
contact components.
5.2 Electrical mounting
WARNING!
Insufficient equipotential bonding
Explosion
▶The transducer must be grounded via the process connection.
For guidance on US installations, see ANSI/ISA-RP12.06.01 “Installation of Intrinsically Safe Systems
for Hazardous (Classified) Locations”.
Installations in the US shall comply with the relevant requirements of the National Electrical Code®
(ANSI/NFPA-70 (NEC®).
5. Commissioning, operation

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5.2.1 Setting up a voltage supply
WARNING!
Incorrect voltage supply
Explosion
▶Follow the specifications in accordance with control drawing 14097836 (see appendix).
▶Do not exceed a power supply of DC 30 V.
Power supply U+
DC 10 ... 30 V with output signal 4 ... 20 mA / DC 0 ... 5 V
DC 14 ... 30 V with output signal DC 0 ... 10 V
Maximum current Imax
50 mA (without switching outputs)
250 mA (with switching outputs)
Additionally for operation in hazardous areas
Ci = 42 nF (+0.3 nF/m with cable outlet)
Li = 10 μH (+2 μH/m with cable outlet)
5. Commissioning, operation

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Relationship between power supply and load (RA)
Current output (3-wire)
4 ... 20 mA:
RA ≤ (U+ – 10 V) / 0.02 A
Voltage output (3-wire)
DC 0 ... 5 V: RA > 5 kΩ
DC 0 ... 10 V: RA > 10 kΩ
with RA in Ω and U+ in Volt
permissible range
U+
4 ... 20 mA, 3-wire
5.2.2 Making the electrical connection
▶Screw the connector in hand-tight.The ingress protection is only ensured if the installation
instructions for the seals are followed.
▶Ensure that no moisture can enter at the cable end.
▶The transducer must be grounded via the process connection.
▶Use a shielded cable, if the line is longer than 30 m or leaves the building.
▶Do not connect the cable shield on the instrument side.
5. Commissioning, operation

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5. Commissioning, operation
Pin assignment
Bayonet circular
connector
4-pin
Circular connector
M12 x 1
4-pin
Circular connector
M12 x 1
5-pin
43
12
43
12
3-wire U+ = A U- = D S+ = B U+ = 1 U- = 3 S+ = 4 U+ = 1 U- = 3 S+ = 4
Switch points - SP1 = 2 SP1 = 2
SP2 = 5
Wire cross-section - -
Cable diameter - -
Ingress protection per
EN/IEC 60529
IP67 IP67 IP67
Ingress protection only applies when plugged in using mating connectors that have the
appropriate ingress protection.

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Sub-D HD connector
15-pin
Sub-D connector
9-pin
Cable outlet
3-wire U+ = 7 U- = 5
U- = 12
S+ = 2 U+ = 4 U- = 8
U- = 9
S+ = 1 U+ = red U- = black S+ = brown
Switch points SP1 = 14
SP2 = 13
SP1 = 3
SP2 = 6
SP1 = blue
SP2 = white
Wire cross-section - - 0.22 mm² (AWG 24)
Cable diameter - - 4.8 mm
Ingress protection per
EN/IEC 60529
IP20 IP20 IP65
Ingress protection only applies when plugged in using mating connectors that have the
appropriate ingress protection.
U+ Positive power supply terminal
U- Negative power supply terminal
S+ Signal output
SP1 Switching output 1
SP2 Switching output 2
5. Commissioning, operation

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5.3 Menu navigation, operation
5.3.1 Instrument version with one key
If no key is pressed during one minute, then the transducer reverts back to operating mode.
Operating mode
dISu short press
long press, con-
firms the value
Switch the
value
short
press
long press
very long
press (10 s)
Unit switching
Rotate display
by 180°
dISu = display update
0.2
0.5
1
5
10
60
5. Commissioning, operation

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5.3.2 Instrument version with three keys
Operating mode Programming mode
Main key short press
- Select menu item
- Confirm setting
long press
Rotate display by 180°
long press
- Select menu item
- Confirm setting
Down key short press
- Scroll the menu downwards
- Reduce parameter value
long press
Switch to programming mode
long press
- Scroll the menu downwards
- Reduce parameter value
Up key short press
- Scroll the menu upwards
- Increase parameter value
long press
- Scroll the menu upwards
- Increase parameter value
Up and down keys short press (both keys simultaneously):
Switch to operating mode
5. Commissioning, operation