WIKA PSD-4 User manual

EN
DE
FR
ES
Operating instructions
Betriebsanleitung
Mode d'emploi
Manual de instrucciones
Druckschalter Typ PSA-31 für die sterile Verfahrenstechnik
Pressure switch model PSA-31
Pressure switch model PSA-31 for sanitary applications
Pressostat type PSA-31 pour applications stériles
Presostato modelo PSA-31 para procesos estériles
®
Replacement
model: PSD-4

2WIKA operating instructions pressure switch model PSA-31
EN
DE
14018458.03 11/2021 EN/DE/FR/ES
FR
ES
© 2010 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 posterior!
Betriebsanleitung Typ PSA-31 Seite 33 - 61
Operating instructions model PSA-31 Page 3 - 31
Mode d'emploi type PSA-31 Page 63 - 91
Manual de instrucciones modelo PSA-31 Página 93 - 121

3WIKA operating instructions pressure switch model PSA-31 for sanitary applications
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14018458.03 11/2021 EN/DE/FR/ES
Contents
Declarations of conformity can be found online at www.wika.com.
Contents
1. General information 4
2. Safety 6
3. Specifications 9
4. Design and function 15
5. Transport, packaging and storage 15
6. Commissioning, operation 16
7. Maintenance and cleaning 28
8. Faults 29
9. Dismounting, return and disposal 30

4WIKA operating instructions pressure switch model PSA-31 for sanitary applications
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14018458.03 11/2021 EN/DE/FR/ES
1. General information
■
The pressure switch 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.
■
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 insuciently
qualied skilled personnel or unauthorised modications to the instrument.
■
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 81.85
- Application consultant: Tel.: [phone]
Fax: [phone]
E-mail: [e-mail]
1. General information

5WIKA operating instructions pressure switch model PSA-31 for sanitary applications
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14018458.03 11/2021 EN/DE/FR/ES
Explanation of symbols
WARNING!
... indicates a potentially dangerous situation which can result in serious injury or death if not
avoided.
CAUTION!
... indicates a potentially dangerous situation which can result in light injuries or damage to
the equipment or the environment if not avoided.
Information
… points out useful tips, recommendations and information for ecient and trouble-free
operation.
Abbreviations
U+Positive power terminal
U-Negative power terminal
S+Analogue output
SP1 Switch point 1
SP2 Switch point 2
C Communication with IO-Link
MBA Start of measuring range
MBE End of measuring range
1. General information

6WIKA operating instructions pressure switch model PSA-31 for sanitary applications
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2. Safety
WARNING!
Before installation, commissioning and operation, ensure that the appropriate pressure
switch has been selected in terms of measuring range, design and specic measuring
conditions.
Non-observance can result in serious injury and/or damage to the equipment.
WARNING!
■
Open the connections only after the system has been depressurised.
■
Observe the working conditions in accordance with Chapter 3 "Specications".
■
Always operate the pressure switch within the overpressure safety range!
Further important safety instructions can be found in the individual chapters of these
operating instructions.
2.1 Intended use
The pressure switch is used to convert pressure into an electrical signal indoors and outdoors.
The instrument has been designed and built solely for the intended use described here, and may only
be used accordingly.
The technical specications contained in these operating instructions must be observed. Improper
handling or operation of the instrument outside of its technical specications requires the instrument to
be taken out of service immediately and inspected by an authorised WIKA service engineer.
The manufacturer shall not be liable for claims of any type based on operation contrary to the intended
use.
2. Safety

7WIKA operating instructions pressure switch model PSA-31 for sanitary applications
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14018458.03 11/2021 EN/DE/FR/ES
2.2 Personnel qualication
WARNING!
Risk of injury if qualication is insucient!
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 qualications 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-specic
regulations, current standards and directives, are capable of carrying out the work described and
independently recognising potential hazards.
Special operating conditions require further appropriate knowledge, e.g. of aggressive media.
2.3 Special hazards
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.
WARNING!
Residual media in dismounted pressure switches can result in a risk to persons, the
environment and equipment.
Take sucient precautionary measures.
2. Safety

8WIKA operating instructions pressure switch model PSA-31 for sanitary applications
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14018458.03 11/2021 EN/DE/FR/ES
2.4 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.
Explanation of symbols
3-A Sanitary Standards, Inc.
This instrument is 3-A marked based on a third party verication for conformance to the 3-A
standard 74-07.
Measuring range
Power supply
P# Product No.
S# Serial No. Analogue signal Switching output 1 Switching output 2
®
2. Safety

9WIKA operating instructions pressure switch model PSA-31 for sanitary applications
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14018458.03 11/2021 EN/DE/FR/ES
3. Specications
3. Specications
3.1 Measuring ranges
Absolute pressure
bar 0 ... 1 0 ... 1.6 0 ... 2.5 0 ... 4 0 ... 6 0 ... 10 0 ... 16 0 ... 25
psi 0 ... 15 0 ... 25 0 ... 301) 0 ... 50 0 ... 100 0 ... 160 0 ... 200 0 ... 300
Vacuum and +/- measuring range
bar -1 ... 0 -1 ... +1.5 -1 ... +3 -1 ... +5 -1 ... +9 -1 ... +15 -1 ... +24
psi -14.5 ... 0 -14.5 ... +30 -14.5 ... +50 -14.5 ... +100 -14.5 ... +160 -14.5 ... +200 -14.5 ... +300
The given measuring ranges are also available in kg/cm2and MPa.
Overpressure limit
2 times
3.2 Display
14-segment LED, red, 4-digit, 9 mm character size
Display can be turned electronically through 180°
Update
100, 200, 500, 1,000 ms (adjustable)

10 WIKA operating instructions pressure switch model PSA-31 for sanitary applications
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3. Specications
3.3 Output signal
Switching output 1 Switching output 2 Analogue signal
PNP - 4 ... 20 mA
PNP - DC 0 ... 10 V
PNP PNP 4 ... 20 mA
PNP PNP DC 0 ... 10 V
Alternatively also available with an NPN instead of a PNP switching output.
With the IO-Link option, switching output 1 is always PNP.
Zero oset adjustment
maximum 3 % of span
Analogue signal
Current output load: ≤ 0.5 kΩ
Voltage output load: > 10 kΩ
Settling time: 3 ms
Switching output
Switch point 1 and switch point 2 are individually adjustable.
Normally-open and normally-closed function: freely adjustable
Window and hysteresis function: freely adjustable
Switching voltage: Power supply - 1 V
Switching current: maximum 250 mA
maximum 100 mA with IO-Link option
Settling time: ≤ 10 ms