WIKA A-1200 User manual

Operating instructions
Betriebsanleitung
Mode d'emploi
Manual de instrucciones
EN
DE
FR
ES
Drucksensor mit IO-Link, Typ A-1200
Pressure sensor, model A-1200
Pressure sensor, model A-1200
Capteur de pression, type A-1200
Sensor de presión, modelo A-1200

2WIKA operating instructions pressure sensor, model A-1200
EN
DE
FR
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© 02/2019 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!
Betriebsanleitung, Typ A-1200 Seite 29 - 54
Operating instructions, model A-1200 Page 3 - 28
Mode d‘emploi, type A-1200 Page 55 - 80
Manual de instrucciones, modelo A-1200 Página 81 - 107

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Contents
Declarations of conformity can be found online at www.wika.com
Contents
1. General information 4
2. Design and function 5
3. Safety 6
4. Transport, packaging and storage 9
5. Commissioning, operation 9
6. Faults 15
7. Maintenance and cleaning 17
8. Dismounting, return and disposal 17
9. Specifications 20
10. Accessories and spare parts 26
Appendix 1: Default values 28

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1. General information
1. General information
■
The instrument 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 certied 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 on to 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 modications.
■
Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: PE 81.90
- Application consultant: Tel.: [phone]
Fax: [phone]
[e-mail]

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




EN
2. Design and function
2. Design and function
2.1 Scope of delivery
■
Pressure sensor
■
Operating instructions
■
Test report
Cross-check scope of delivery with delivery note.
2.2 Overview
Electrical connection (depending on version)
Three-coloured status display (depending on version)
Case, product label
Process connection, spanner ats
Process connection, thread (depending on version)

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3. Safety
3. Safety
3.1 Explanation of symbols
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 property or the
environment, if not avoided.
WARNING!
... indicates a potentially dangerous situation that can result in burns, caused by hot surfaces or liquids,
if not avoided.
Information
... points out useful tips, recommendations and information for ecient and trouble-free operation.
3.2 Intended use
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.
Intended use
The model A-1200 pressure sensor is used for the switching of circuits as a function of the measured pressure
via a PNP or NPN output signal. In addition, the pressure value can be output to appropriate read-out units as a
standardised digital signal (IO-Link 1.1).The switching conditions can optionally be programmed using IO-Link 1.1
(switch and reset points, switching functions, time response, …) or congured using the teach function (switch point 1,
switching function).

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3. Safety
The model A-1200 has been developed for the pressure measurement of non-hazardous uids, liquids and gases
(classication in accordance with Directive 2014/68/EU Article 13, Regulation (EC) No. 1272/2008, or GHS1) ) which
are mainly used for cooling, lubrication, cleaning or power transmission in industrial machines.
1) Globally Harmonized System of Classication, Labelling and Packaging of Chemicals
Only use the instrument in applications that lie within its technical performance limits.The manufacturer or operator of the
machine or plant in which the product is used must ensure the compatibility of the wetted parts with the medium used.
The pressure should not be used with abrasive or unstable uids, in particular not with hydrogen.
→ For performance limits see chapter 9 “Specications”
Special versions for applications free of oil and grease and for oxygen use are available on request.
The mounting, dismounting, installation, parameterisation and maintenance of the model A-1200 in industrial environ-
ments absolutely requires suitably skilled personnel in accordance with chapter 3.3. “Personnel qualication”.
Technical restrictions
■
Any permanent operation in the overload range is not permitted. Above the operating pressure, up to the overload
limit, the pressure sensor is operating outside its specication. The overload limit is intended to prevent damage to
the pressure sensor, as part of a pressure vessel system, during the pressure containment test.
■
The overload pressure must never be exceeded, even when failures occur in the end-use application. Loads above
the overload safety limit can cause irreversible damage, e.g. permanent measurement errors.
■
Pressure surges below the nominal pressure and shorter than 1 ms can cause measuring errors.
■
For applications where pressure spikes can occur, the use of a restrictor is recommended.The restrictor narrows the
pressure port to 0.6 mm and thus increases the resistance against pressure spikes.
■
With media that could block the pressure port (e.g. through particles), it is recommended to use a wider pressure
port of 6 or 12 mm.
■
It must be ensured that no atomic hydrogen can form in the pressure port of the pressure sensor.
3.3 Personnel qualication
Skilled personnel
Skilled personnel, authorised by the operator, 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-specic regula-
tions, current standards and directives, are capable of carrying out the work described and independently recognising
potential hazards.

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3.4 Use of accessories and spare parts
It is recommended to use original accessories and original spare parts from WIKA. Using accessories and spare parts
from third parties can lead to damage to the instrument or accidents, due to quality defects or other reasons.
WIKA assumes no liability for damage or accidents caused by a malfunction or unsuitability of accessories and spare
parts which do not originate from WIKA (e.g. non-compliance with the IP ingress protection of connectors). No warranty
claims can be made which arise due to a malfunction or unsuitability of any accessory or spare part from a third party.
3.5 Labelling, safety marks
Product label
If the serial number becomes illegible (e.g. due to mechanical damage or overpainting), traceability will no longer be
possible.
IO-Link (option) Coded date of manufacture
P# Product no. Pin assignment and specications
S# Serial no. Approvals
Measuring range
Symbols
Before mounting and commissioning the instrument, ensure you read the operating instructions!
A-1200
www.wika.com Made in Germany



   
3. Safety

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4. Transport, packaging and storage / 5. Commissioning, operation
4. Transport, packaging and storage
4.1 Transport
Check the pressure sensor for any damage that may have been caused by transport.
Obvious damage must be reported immediately.
4.2 Packaging and storage
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).
Permissible conditions at the place of storage:
■
Storage temperature: -40 ... +70 °C [-40 ... +158 °F]
■
Humidity: 45 ... 75 % relative humidity (no condensation)
5. Commissioning, operation
5.1 Check the instrument
Prior to commissioning, the pressure sensor must be subjected to a visual inspection.
■
Leaking uid is indicative of damage.
■
Only use the pressure sensor if it is in perfect condition with respect to safety.
5.2 Requirements for mounting point
The mounting point must meet the following conditions:
■
Protected from weather inuences. Permanent exposure to UV light/sunlight can lead to a change in the colour of
the plastic parts and a clouding/yellowing of the status display.Therefore, a possible limitation of the visibility of the
status display cannot be excluded. However, this has no eect on the functionality of the instrument.
■
Under corrosive environmental conditions (such as salty, humid air), reductions in the gloss level of the metallic
surfaces, or even corrosion on the instrument, may occur, which make readability of the product label more dicult.
However, this has no eect on the functionality of the instrument.
■
Sealing faces are clean and undamaged.
■
Sucient space for a safe electrical installation.
■
The instrument is vented to the atmosphere.Therefore, no coating or other covering may be applied which might
restrict the venting.
■
For information on tapped holes and welding sockets, see Technical information IN 00.14 at www.wika.com.

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5. Commissioning, operation
■
Permissible ambient and medium temperatures remain within the performance limits. Consider possible restrictions
on the ambient temperature range caused by mating connector used.
→ For performance limits see chapter 9 “Specications”
5.3 Mechanical mounting
The max. torque depends on the mounting point (e.g. material and shape). If you have any questions,
please contact our application consultant.
→ For contact details see chapter 1 “General information” or the back page of the operating instructions.
1. Seal the sealing face (→ see “Sealing variants”).
2
.
At the mounting point, screw the pressure sensor in hand-tight.
3
.
Tighten with a torque spanner using the spanner ats.
Sealing variants
Parallel threads
Seal the sealing face with flat gasket, lens-type
sealing ring or WIKA profile sealing.
per EN 837 per ISO 1179-2 (formerly DIN 3852-E)


Tapered threads
Wrap threads with sealing material
(e.g. PTFE tape).
NPT, R and PT

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5. Commissioning, operation
5.4 Electrical mounting
5.4.1 Requirements for voltage supply
→ For power supply see product label
The power supply for the pressure sensor must be made via an energy-limited electric circuit in accordance with
section 9.4 of UL/EN/IEC 61010-1, or an LPS per UL/EN/IEC 60950-1 / CSA C22.2 no. 60950-1, or class 2 in
accordance with UL1310/UL1585 (NEC or CEC). The voltage supply must be suitable for operation above 2,000 m
should the pressure sensor be used at this altitude.
5.4.2 Requirements for electrical connection
■
Ingress protection of the mating connector corresponds to the ingress protection of the pressure sensor.
■
Cable diameter matches the cable bushing of the mating connector.
■
Cable gland and seals of the mating connector are correctly seated.
■
No humidity can ingress at the cable end.
5.4.3 Requirement for shielding and grounding
The pressure sensor must be shielded and grounded in accordance with the grounding concept of the application.
Take measures to prevent electrostatic discharge on the connection terminals, as a discharge could lead to temporary
corruption of the measured value.
5.4.4 Connecting the instrument
1. Assemble the mating connector or cable outlet.
→ Pin assignment, see product label
2
.
Establish the plug connection.

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5.5 Teach function (optional)
With the teach function, the instrument can be congured by short-circuiting the teach pin with U-.
Setting the switch point and window values
To adopt the prevailing process pressure as a new switch point or high value (window).
Short-circuit the teach pin with U- for 2 ... 5 seconds.
▶
Blinking yellow:Teach mode for switch point active, remove short-circuit.
▶
Blinking green: New switch point adopted.
▶
Blinking red:Teach pin not short-circuited for long enough or error in teach process.
The reset point and the low value for the window function will be corrected automatically.The previously
set hysteresis (for default value, see appendix 1 “Default values”) or the dierence between the window
high and window low will be restored. In the event that the prevailing pressure is below 5 % of the
measuring range end value, no teach process will be carried out. Should the prevailing pressure be less
than the set hysteresis or the set window band, the reset point or the low value of the window function
will be set to the start of measuring range.
Setting the switching function
To change the switching function between normally open and normally closed.
Short-circuit the teach pin with U- for 10 ... 20 seconds.
▶
2 ... 5 seconds: Blinking yellow:Teach mode for switch point active, do not remove short-circuit.
▶
5 ... 10 seconds: Permanently lit yellow:Teach mode changes to switching function, do not remove short-circuit.
▶
10 ... 20 seconds: Blinking yellow:Teach mode for switching function active, remove short-circuit.
▶
> 20 seconds: Permanently lit yellow, teach process failed.
▶
Blinking green: Switching function changed.
▶
Blinking red:Teach pin not short-circuited for long enough or error in teach process.
5. Commissioning, operation

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5. Commissioning, operation
5.6 Colour codes of status display
Colour Interval Description
Green Lit permanently Instrument is ready for operation, no error
Blinking (5 seconds) Teach successful
Yellow Blinking (continuously) Temporary error, operation outside of the specication (e.g. under- or overpressure,
under- or overtemperature).
Lit permanently Time exceeded, teach signal applied longer than 20 s
Blinking (during teach) Instrument blinks so long as the teach is running
Red Blinking (continuously) “Locate me” function active or permanent error; In case of a permanent error a replace-
ment of the instrument is required
Blinking (5 seconds) Teach failed
5.7 Switching functions
Hysteresis function (congurable via teach function or IO-Link)
If the system pressure uctuates around the set point, the hysteresis keeps the
switching status of the outputs stable.With increasing system pressure, the
output switches when reaching the switch point (SP).
■
Normally open contact (HNO): Active
■
Contact normally closed (HNC): Inactive
With system pressure falling again, the output will not switch back before the reset
point (RP) is reached.
■
Normally open contact (HNO): Inactive
■
Contact normally closed (HNC): Active Fig.: Hysteresis function

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5. Commissioning, operation
Window function (congurable via teach function or IO-Link)
The window function allows for the control of a dened range.
When the system pressure is between window high (FH) and window low (FL),
the output switches on.
■
Normally open contact (FNO): Active
■
Contact normally closed (FNC): Inactive
When the system pressure is outside window high (FH) and window low (FL), the
output does not switch on.
■
Normally open contact (FNO): Inactive
■
Contact normally closed (FNC): Active
Delay times (0 … 65 s) (congurable via IO-Link)
This makes it possible to lter out unwanted pressure peaks of a short duration or
a high frequency.
The pressure must be present for at least a certain pre-set time for the output to
switch on.The output does not immediately change its status when it reaches the
switching event (SP), but rather only after the pre-set delay time (DS).
If the switching event is no longer present after the delay time, the switch output
does not change.
The output only switches back when the system pressure has fallen down to the
reset point (PR) and stays at or below the reset point (RP) for at least the pre-set
delay time (DR).
If the switching event is no longer present after the delay time, the switch output
does not change.
Fig.: Window function
Fig.: Delay times

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5. Commissioning, operation / 6. Faults
5.8 Damping function (congurable via IO-Link)
The time constant “x” species the time duration which the switching output
requires to approach the nal value with a deviation of ± 1 % following a change in
measured value. After a duration of 2 times “x”, the output value has reached 100 %
with a deviation of ± 0.01 % of the prevailing pressure.
5.9 Zero point setting
A zero point oset can be reset with the 0SET parameter via IO-Link. Only carry out
zero point setting for gauge and vacuum pressure measuring ranges at the start of
the measuring range.
Carry out the zero point setting of absolute pressure measuring ranges at 0 bar absolute (vacuum).
Since appropriate references are required for this, we recommend that this is only carried out by the
manufacturer.
5.10 Description of the IO-Link functionality (optional)
IO-Link is a point-to-point connection for the communication of the instrument with an IO-Link master.
IO-Link specication: Version 1.1
A detailed description of the IO-Link functionality and the device description le (IODD) can be found online on the
product details page at www.wika.de.
6. Faults
CAUTION!
Physical injuries and damage to property and the environment
If faults cannot be eliminated by means of the listed measures, the pressure sensor must be taken out of
operation immediately.
▶
Ensure that pressure or signal is no longer present and protect against accidental commissioning. I
▶
Contact the manufacturer.
▶
If a return is needed, please follow the instructions given in chapter 8.2 “Return”.
Fig.: Damping function
100 %
0x
Zeit
Time

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6. Faults
WARNING!
Physical injuries and damage to property and the environment caused by hazardous media
Upon contact with hazardous media (e.g. oxygen) and also with refrigeration plants and compressors,
there is a danger of physical injuries and damage to property and the environment.
▶
Should a failure occur media with extremely high temperature and under high pressure or vacuum
may be present at the instrument.
▶
For these media, in addition to all standard regulations, the appropriate existing codes or regulations
must also be followed.
▶
Wear the requisite protective equipment.
For contact details see chapter 1 “General information” or the back page of the operating instructions.
In the event of any faults, rst check whether the pressure sensor is mounted correctly, mechanically and electrically.
If complaint is unjustied, the handling costs will be charged.
Fault Possible cause Measure
No output signal Cable break Check the continuity
No output signal No/wrong power supply Rectify the power supply
No/wrong output signal Wiring error or switching of switching logic Observe the pin assignment
Check the output conguration
Constant output signal upon change in
pressure
Mechanical overload caused by overpres-
sure
Replace instrument; if it fails repeatedly,
contact the manufacturer
Deviating zero point signal Overload safety exceeded Observe the permissible overload safety
Signal span too small Mechanical overload caused by overpres-
sure
Replace instrument; if it fails repeatedly,
contact the manufacturer
Signal span too small Power supply too high/low Rectify the power supply
Signal span drops Moisture has entered Fit the cable correctly

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Warnings and errors
Via the three-coloured status display, internal instrument warnings (yellow) and errors (red) are shown, see chapter 5.6
“Colour codes of status display”. An extended error diagnosis is possible via IO-Link.
7. Maintenance and cleaning
7.1 Maintenance
This pressure sensor is maintenance-free.
Repairs must only be carried out by the manufacturer.
Regular inspection of the sealing by the operator is necessary.
7.2 Cleaning
CAUTION!
Unsuitable cleaning agents
Cleaning with unsuitable cleaning agents may damage the instrument and the product label.
▶
Do not use any aggressive cleaning agents.
▶
Do not use any hard or pointed objects.
▶
Do not use any abrasive cloths or sponges.
Suitable cleaning agents
■
Water
■
Conventional dishwashing detergent
Cleaning the instrument
Wipe the instrument surface using a soft, damp cloth.
6. Faults / 7. Maintenance and cleaning

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8. Dismounting, return and disposal
8. Dismounting, return and disposal
8.1 Dismounting
WARNING!
Physical injuries and damage to property and the environment caused by hazardous media
Upon contact with hazardous media (e.g. oxygen) and also with refrigeration plants and compressors,
there is a danger of physical injuries and damage to property and the environment.
▶
Should a failure occur media with extremely high temperature and under high pressure or vacuum
may be present at the instrument.
▶
Wear the requisite protective equipment.
WARNING!
Risk of burns
During dismounting there is a risk of dangerously hot media escaping.
The pressure sensor may have heated up severely due to hot media.
▶
Let the instrument cool down sufficiently before dismounting it.
▶
Wear the requisite protective equipment.
Dismounting the instrument
1. Depressurise and de-energise the pressure sensor.
2
.
Disconnect the electrical connection.
3
.
Unscrew the pressure sensor with a spanner using the spanner ats.

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8. Dismounting, return and disposal
8.2 Return
Strictly observe the following when shipping the instrument:
All instruments delivered to WIKA must be free from any kind of hazardous substances (acids, bases, solutions, etc.)
and must therefore be cleaned before being returned.
WARNING!
Physical injuries and damage to property and the environment through residual media
Residual media in the dismounted instrument can result in a risk to persons, the environment and
equipment.
▶
With hazardous substances, include the material safety data sheet for the corresponding medium.
▶
Clean the instrument, see chapter 7.2 “Cleaning”.
When returning the instrument, use the original packaging or a suitable transport packaging.
Information on returns can be found under the heading “Service” on our local website.
8.3 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-specic waste disposal regulations.
Do not dispose of with household waste. Ensure a proper disposal in accordance with national regulations.

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9. Specifications
Specications
Measuring range
Measuring range see product label
Overload safety The overload safety is based on the sensor element used. Depending on the selected process
connection and sealing, restrictions in overload safety can result.
Measuring ranges ≤ 600 bar (< 8,000 psi): 2 times
Measuring ranges up to 1,000 bar (≥ 8,000 psi): 1.5 times
Increased overload safety
(option)
With increased overload safety there are deviations in temperature error, signal noise and long-
term stability.
Vacuum-tight Yes
LED status display (option)
Visibility 360°
Status display see chapter 5.6 “Colour codes of status display”
Average service life Average service life of the LEDs at 105 °C in continuous operation over 50,000 h : L501)/B502)
1) 50 % of the initial luminous ux available after 50,000 hours
2) 50 % of the LEDs fail after 50,000 hours
Output signal
Output signal see product label
IO-Link
Revision 1.1
Transmission rate 38.4 kBaud (COM2)
Min. cycle time 2.3 ms
Master port class A
Adjustment of zero point oset max. 3 % of span (via IO-Link)
Damping of switching outputs 0 ms ... 65 s (adjustable via IO-Link)
Switch-on time 1 s
Switching thresholds Switch point 1 and switch point 2 are individually adjustable via IO-Link.
Switch point 1 can be set to the prevailing pressure value using the teach function.
9. Specications