WIKA PSD-4 User manual

Operating instructions
Betriebsanleitung
Mode d'emploi
Manual de instrucciones
EN
DE
FR
ES
Pressure switch, model PSD-4
Druckschalter, Typ PSD-4 Seite 21 - 39
Pressure switch, model PSD-4 Page 2 - 20
Pressostat, type PSD-4 Page 40 - 58
Presostato, modelo PSD-4 Página 59 - 77

2WIKA operating instructions pressure switch, model PSD-4
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© 07/2017 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.
1. General information
1. General information
Prior to starting any work, read the operating instructions! Keep for later use!
■These operating instructions contain important information on handling the pressure switch.Working safely
requires that all safety instructions and work instructions are observed.
■The general terms and conditions of WIKA Alexander Wiegand SE & Co. KG shall apply.
■Further information:
- Internet address: www.wika.de / www.wika.com
- Contact: Tel.: [phone]
[email protected]
- Data sheet: PE 81.86
- Test report: Included in delivery
- Tapped holes for process connections: Technical information IN 00.14 at www.wika.com
- Electrical mounting: Technical information IN 00.50 at www.wika.com
- Declaration of conformity: Online at www.wika.de

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2. Short overview
2. Short overview
2.1 Overview







Conrmation button
INFO button
Digital display
Status display, switching outputs
MENU button
Electrical connection
Process connection, spanner ats
Process connection, thread

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2.2 Display and operating unit
4-digit LED display
■Display of pressure value
■Display of menu item
■Display of parameter
Status of switching output 1
Status of switching output 2 (optional)
Display mode
▶Short press
Display of unit
▶Long press
For display of the set parameters, see
chapter 5.3 “Overview of parameters”
Programming mode
▶Short press
Menu up
Parameter value up (step-wise)
▶Long press
Menu up
Parameter value up (fast)
Display mode
▶Short press
Display of unit
▶Long press
Jumping into the programming mode
Programming mode
▶Short press
Menu down
Parameter value down (step-wise)
▶Long press
Menu down
Parameter value down (fast)
Display mode
▶Short press
Display of unit
Programming mode
▶Short press
Selection of menu item
Conrmation of input
2. Short overview

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3. Safety
3. Safety
3.1 Explanation of symbols and terms
WARNING!
The signal word indicates a hazard with a medium degree of risk which, if not avoided, may result in
death or serious injury.
CAUTION!
The signal word indicates a hazard with a low degree of risk which, if not avoided, may result in a minor
or moderate injury.
Information
The signal word points out useful tips, recommendations and information for ecient and trouble-free
operation.
1.1 Intended use
The pressure switch may only be used in such applications as are within its technical performance limits, in particular
with regard to its material resistance limit, leakage rate limits and permissible temperature and pressure limits.
It is the sole responsibility of the manufacturer or operator of a machine or plant to ensure the suitability of the pressure
switch, and its media resistance, within the application through proper choice of materials and maintenance cycles. For
performance limits, see chapter 9 “Specications”.
Special versions for oil and grease-free applications, as well as for use with oxygen (dangerous uid in accordance
with Directive 2014/68/EU Article 13, Regulation (EC) No. 1272/2008, or GHS 1)), are available on request.
The mounting, dismounting, installation, parameterisation and maintenance of the pressure switch in industrial
environments absolutely requires suitably skilled personnel in accordance with chapter 3.2 “Personnel qualication”.
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.
1) Globally Harmonized System of Classification, Labelling and Packaging of Chemicals

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3. Safety
Improper use
Any use beyond or dierent to the intended use is considered as improper use.
The following points, in particular, count as improper use and are not permissible:
■Use of this instrument in safety or emergency shutdown devices
■Unauthorised modications to the pressure switch
■Use in hazardous areas
■Use with abrasive or unstable uids, in particular hydrogen
3.2 Personnel qualification
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
regulations, current standards and directives, must be capable of carrying out the work described and independently
recognising potential hazards.
3.3 Labelling, safety marks
Product (example)
Approvals and conformities Serial number
QR code to WIKA serial number application Article number
Coded date of manufacture Measuring range
Pin assignment and specications IO-Link version (option)
Before mounting and commissioning the instrument, ensure you read the operating instructions!








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3. Safety / 4. Mounting
Do not dispose of with household waste. Ensure a proper disposal in accordance with national
regulations.
4. Mounting
4.1 Mechanical mounting
Only use the pressure switch if it is in perfect condition with respect to safety.
Prior to commissioning, the pressure switch must be subjected to a visual inspection.
■Leaking liquid is indicative of damage.
■Obvious damage must be reported immediately.
■With a high ambient temperature and a high UV irradiation, the pressure switch must be installed with additional
covering in order to avoid damage to the digital indicator and buttons.
For information on tapped holes and welding sockets, see Technical information IN 00.14 at www.wika.com
Mounting instructions for process connections G 1 hygienic and TRI-CLAMP®
■Never loosen sealed lling screws on the measuring instrument.
■For installation, in accordance with the tting and ange standards the appropriate fastenings, such as screws, nuts
or clamp rings, must be used.
■For ange mounting, only use sealings with a suciently large inner diameter and centre them. Contact with the
diaphragm leads to measuring deviations.
■When using a welding socket, position this so that the hole for leakage detection points downwards.Weld the
welding socket ush with the inner wall of the vessel and grind down. The surface roughness of the ground surfaces
must be Ra ≤ 0.8 μm. To comply with 3-A guidelines, always provide a leakage hole of min. 2.38 mm (0.09 in) at the
lowest position.
■When using soft or PTFE sealings, observe the instructions of the sealing manufacturer, particularly with regard to
tightening torque and load cycles.
G 1 hygienic
■Wetted seals from EPDM or FKM
■Suitable for WIKA adapter system model 910.61; see WIKA data sheet AC 09.20
■For dimensions of the appropriate process adapters and welding sockets, see WIKA data sheet AC 09.20

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4. Mounting
TRI-CLAMP®
EHEDG conformity with clamp connection only in combination with a T-ring seal from Combit Metaalbewerking B.V.
Additional mounting instructions for process connections with EHEDG and 3-A approvals
Observe the following instructions, especially for EHEDG-certied and 3-A-compliant instruments.
■To maintain the EHEDG certication, one of the EHEDG-recommended process connections must be used. These
are marked with the logo in the data sheet.
■For an EHEDG-compliant connection, seals in accordance with the current EHEDG policy document must be used.
■To maintain the conformity to the 3-A standard, a 3-A-compliant process connection must be used.These are
marked with the logo in the data sheet.
■Mount the process connection with minimal dead space and able to be cleaned easily.
■The mounting position must not form a draining point or cause a basin to be formed.
4.2 Electrical mounting
Electrical connection to the voltage supply
→For supply voltage, see product label or connection diagram
Pin assignment
→ For pin assignments, see product label or connection diagram
Circular connector M12 x 1 (4-pin) Circular connector M12 x 1 (5-pin)
U+ 1 U+ 1
U- 3 U- 3
S+ 2 S+ 5
SP1/C 1) 4 SP1/C 4
SP2 2 SP2 2
1) Depending on the configuration of the output signals
Legend:
U+ Positive power supply terminal SP1 Switching output 1
U- Negative power supply terminal SP2 Switching output 2
S+ Analogue output C Communication with IO-Link

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For instruments without North American certication
This equipment is intended for operation with low voltages which are separated from the AC 230 V (50 Hz) mains
voltage or voltages greater than AC 50 V or DC 120 V for dry environments. A connection to an SELV circuit is
recommended, or alternatively to circuits with a dierent protective measure in accordance with IEC 60364-4-41
installation standard.
For instruments with North American certication per UL/CSA IEC 61010-1
The power supply for the pressure sensor must be made via an energy-limited electric circuit in accordance with
section 9.3 of UL/EN/IEC 61010-1 or an LPS per UL/EN/IEC 62368-1 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 switch be used at
this altitude.
Include the pressure switch in the equipotential bonding via the process connection or connect it to ground (earth).
5. Commissioning
Only use original parts and accessories, see data sheet PE 81.86 under “Accessories”.
5.1 Adjustability of zero point
Check the indicated zero point on the digital display during commissioning. Should a zero point oset be displayed as
a result of installation, this can be reset in programming mode with the 0SET parameter.
Only carry out the setting for gauge and vacuum pressure measuring ranges in a depressurised state.
For absolute pressure measuring ranges, the setting must be carried out at 0 bar absolute (vacuum).
Since appropriate references are required for this, we recommend that this is only carried out by the
manufacturer.
5.2 Operating modes
Mode Description
System start Digital display is fully activated for 1 sec.
When the pressure switch is powered up within the range of the hysteresis, the output switch is set to
“not active” by default.
4. Mounting / 5. Commissioning

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5. Commissioning
Mode Description
Programming mode
(setting the parameters)
Activating the programming mode
Keep the “MENU” button pressed for approx. 2 sec. If the password is set to ≠ 0000, a password will be
requested. If authentication is successful, then it enters the programming mode, otherwise it reverts to
display mode.
Timeout
If, during the setting of a parameter, no button is pressed for 60 s, the instrument returns to the display
mode with the value unchanged.
Display mode
(normal operation, display
of pressure value)
Returning to the display mode
Simultaneous pressing of “INFO” and “MENU”
5.3 Overview of parameters
Menu item Description Parameter Factory setting
SP1/SP2 Hysteresis function:
Switch point (switching output 1/2)
0.25 ... 100 % of measuring range Nominal pressure
FH1/FH2 Window function:
Window high (switching output 1/2)
0.25 ... 100 % of measuring range Nominal pressure
RP1/RP2 Hysteresis function: Reset point,
switching output (1 or 2)
0 ... (switch point - 0.25 % of measuring
range)
Nominal pressure -
10 %
FL1/FL2 Window function:Window low switch
output (1 or 2)
0 ... (window high - 0.25 % of measuring
range)
Nominal pressure -
10 %
EF Extended programming functions
RES Return the set parameters to the factory
settings
Yes/No
DS1/DS2 Switching delay time, which must occur
without interruption before any electrical
signal change occurs (SP1, if applicable
SP2)
0.00 ... 65.00 s 0.00 s
DR1/DR2 Reset delay time, which must occur
without interruption before any electrical
signal change occurs (RP1, if applicable
RP2)
0.00 ... 65.00 s 0.00 s

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Menu item Description Parameter Factory setting
OU1/OU2 Switching function (switching output 1/2) HNO = hysteresis function, normally open
HNC = hysteresis function, normally closed
FNO = window function, normally open
FNC = window function, normally closed
HNO
OU3 Output signal switching I = 4 ... 20 mA
U = DC 0 ... 10 V
I
POL1/POL2 Switching logic (switching output 1/2) PNP, NPN PNP
ALOW Measuring range scaling/turndown
(analogue value, start value)
corresponding to analogue output Start of measuring
range
AHGH Measuring range scaling/turndown
(analogue value, end value)
corresponding to analogue output End of measuring range
AVGD Damping (digital display) 0.00 ... 65.00 s 0.20 s
AVG1/AVG2 Damping (switching output 1/2) 0.00 ... 65.00 s 0.00 s
AVG3 Damping (analogue signal) 0.00 ... 65.00 s 0.00 s
UNIT Unit switching BAR, mBAR, MPA, KPA, PSI, KGcm (kg/cm²),
%
Order-related
0SET Adjustability of the zero point/execution
of “Autozero” (max. ±3 % of span)
Yes/No
DISM Display value in display mode ACT = current system pressure
LOW, HIGH = min/max system pressure
OFF = display o
SP1/FH1 = set switching value
RP1/FL1 = set switching value
SP2/FH2 = set switching value
RP2/FL2 = set switching value
ACT
DISU Refresh rate (digital display) 1, 2, 5, 10 updates/second 5
DISR Rotate the indication by 180° (digital
display)
Yes/No
5. Commissioning

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Menu item Description Parameter Factory setting
DRES Resolution (digital display) OPT = optimised (stable measured value
display with rounding factors for the last digit
optimised to the measuring range)
FULL = maximum (nest resolution, if
required, for a stable display of measured
values a damping must be set for the digital
display)
OPT
RHL Clear memory (min/max system
pressure)
Yes/No
PAS Password entry 0000 = no password
Password input digit by digit
0000
TAG Measuring instrument name (TAG) Up to 32 characters (A-Z ‚0 ... 9; - ‚SPACE)
(2 spaces in sequence terminate the input
and lead to the deletion of this and the
underlying characters)
Without
5.4 Menu tree
Certain menu items (light grey) are only displayed if the pressure switch features the respective option.
Programming mode
SP1/FH1 Value Switch point/window high (switching output 1)
RP1/FL1 Value Reset point/window low (switching output 1)
SP2/FH2 Value Switch point/window high (switching output 2)
RP2/FL2 Value Reset point/window low (switching output 2)
EF RES Yes/No Reset to factory settings
END DS1 Value Switching delay (switching output 1)
DR1 Value Reset delay (switching output 1)
DS2 Value Switching delay (switching output 2)
DR2 Value Reset delay (switching output 2)
5. Commissioning

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OU1 PARA Switching function (switching output 1)
OU2 PARA Switching function (switching output 2)
OU3 PARA Output signal switching (analogue signal)
POL1 PARA Switching logic (switching output 1)
POL2 PARA Switching logic (switching output 2)
ALOW Value Measuring range scaling/turndown (analogue output, start value)
AHGH Value Measuring range scaling/turndown (analogue output, end value)
AVGD Value Damping (digital display)
AVG1 Value Damping (switching output 1)
AVG2 Value Damping (switching output 2)
AVG3 Value Damping (analogue output)
UNIT Unit Unit switching
0SET Yes/No Adjustability of zero point
DISM PARA Display value in display mode
DISU Value Refresh rate (digital display)
DISR Yes/No Rotate the indication by 180° (digital display)
DRES PARA Resolution (digital display)
RHL Yes/No Clear Min/Max memory
PAS Value Password entry
TAG Value Measuring instrument name (TAG)
END
5. Commissioning

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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 switch must be taken out
of operation immediately.
▶Ensure that pressure or signal is no longer present and protect against accidental commissioning.
▶Contact the manufacturer.
▶If a return is needed, please follow the instructions given in chapter 8.2 “Return”.
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 switch is mounted correctly, mechanically and electrically.
Fault Possible cause Measure
No output signal Cable break Check the continuity
No output signal No/wrong supply voltage Rectify the supply voltage
No/wrong output signal Wiring error or switching of switching logic/
analogue signal
Observe the pin assignment
Check the output conguration
Constant output signal upon change
in pressure
Mechanical overload caused by
overpressure
Replace instrument; if it fails repeatedly,
contact the manufacturer
Deviating zero point signal Overpressure limit exceeded Maintain permissible overpressure limit
Signal span too small Mechanical overload caused by
overpressure
Replace instrument; if it fails repeatedly,
contact the manufacturer
Signal span too small Supply voltage too high/low Rectify the supply voltage
Signal span drops Moisture has entered Mount the cable correctly
Signal span drops/too small Diaphragm damaged, e.g. due to impacts,
abrasive/aggressive medium; corrosion at
diaphragm/process connection
Contact manufacturer and replace instrument
6. Faults

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Warnings and errors
Via the digital display, the instrument's internal warnings and errors are output.The instrument continues to measure,
even when a warning exists.The output signal and the switching outputs are still output.
The following table shows the codes and their meaning.
Warning Description
ATT1 On changing the switch point, the reset point of the instrument is automatically reduced to the smallest hysteresis
of 0.25 %.
ATT2 Adjustability of zero point, current pressure is outside the limits
ATT3 Password entered for menu access is incorrect
ATT4 Unit cannot be displayed on digital display, previous unit is used
ATT5 Maximum turndown exceeded
ILOC Menu locked over IO-Link
OL Overpressure, measuring range exceeded > approx. 3.125 % (digital display ashing)
PAS Prompt for password input
UL Vacuum, below measuring range < approx. 3.125 % (digital display ashing)
Error Description
ERR Internal error (restarting the instrument or resetting to factory settings can provide a solution)
The analogue output controls the alarm signal ≤ 3.6 mA (4 ... 20 mA output signal) or ≥ 11 V (0 ... 10 V output
signal) in accordance with NAMUR43
The switching outputs keep the current switching state (output open or closed)
ERR1 Instrument temperature exceeded/too low or supply voltage too low
The analogue output is output. There are restrictions with respect to accuracy (temperature inuence) and
maximum analogue value (supply voltage too low)
The switching outputs keep the current switching state (output open or closed)
6. Faults

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Error Description
ERR2 Sensor defect detected, check whether high overpressure is present (can be detected as sensor defect), if
necessary, restart instrument or exchange of instrument is needed
The analogue output controls the alarm signal ≤ 3.6 mA (4 ... 20 mA output signal) or ≥ 11 V (0 ... 10 V output
signal) in accordance with NAMUR43
The switching outputs keep the current switching state (output open or closed)
SC Short-circuit detected at switching output 1 or 2
The switching output aected is inactive so long as the short-circuit is present
Acknowledge warnings and errors with conrmation button.
7. Maintenance and cleaning
7.1 Maintenance
This pressure switch is maintenance-free.
Repairs must only be carried out by the manufacturer.
7.2 Cleaning
Only use commercially available and solvent-free cleaning agents.
7.3 Cleaning in place (CIP) cleaning process
The following instructions are valid only for instruments which have been marked as suitable for CIP in the data sheet.
■When cleaning from outside (“wash down”), observe the permissible temperature and ingress protection.
■Only use cleaning agents which are suitable for the seals used.
■Cleaning agents must not be abrasive nor corrosively attack the materials of the wetted parts.
■Avoid thermal shocks or fast changes in the temperature. The temperature dierence between the cleaning agent
and rinsing with clear water should be as low as possible. Negative example: Cleaning with 80 °C [176 °F] and
rinsing at 4 °C [39 °F] with cold water.
6. Faults / 7. Maintenance and cleaning

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8. Dismounting, return and disposal
8.1 Dismounting
WARNING!
Hazardous media
▶Should a failure occur, aggressive media with extremely high temperature and under high pressure
or vacuum may be present at the instrument.
▶Depressurise and de-energise the pressure switch before dismounting it.
8.2 Return
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.
▶In case of hazardous substances, enclose the material safety data sheet for the corresponding
medium.
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.
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.
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.
8. Dismounting, return and disposal

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9. Specifications
Depending on the selected instrument version (e.g. seals), the specication may deviate from the specications listed
here. The specications in the order documentation are denitive.
For further specications, see WIKA data sheet PE 81.86 and the order documentation.
Specifications
Measuring range →See product label
Maximum working pressure →Equals the upper range value / full scale value
Overpressure limit 1)
Measuring ranges ≤ 600 bar [≤ 7,500 psi] 2 times
Measuring range 1,000 bar [14,500 psi] 1.48 times
Max. measured error per IEC 61298-2 ≤ ±0.5 % of span
Accuracy of the switch point ≤ ±0.5 % of span
Switching current Max. 250 mA per switching output
Switching voltage Supply voltage - 1 V
Temperature error at 0 ... 80 °C [32 ... 176 °F]
For all process connections with pressure port ≤ ±1.5 % of span
With increased overpressure limit and process
connection G ½ B ush
≤ ±2.5 % of span
For process connections G 1 hygienic and
TRI-CLAMP®1 ½" and 2"
≤ ±3.5 % of span
Vacuum resistance Yes
Output signal →See product label
Supply voltage DC 15 ... 35 V
Current supply Max. 600 mA including switching current
Pin assignment →See product label and connection diagram in chapter 4.2 “Electrical mounting”
Short-circuit resistance S+ / SP1 / SP2 vs. U-
Reverse polarity protection U+ vs. U-
Insulation voltage DC 500 V
Material (wetted)
Measuring ranges < 10 bar [150 psi] Stainless steel 316L
Stainless steel 1.4435/316L with G 1 hygienic and TRI-CLAMP®1 ½" and 2"
process connections
9. Specications

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9. Specications
Specifications
Measuring ranges ≥ 10 bar [150 psi] Stainless steel 316L, PH grade steel
Stainless steel 1.4435/316L with G 1 hygienic and TRI-CLAMP®1 ½" and 2"
process connections
Pressure transmission medium
For all gauge pressure measuring ranges
< 10 bar [150 psi] 1), all absolute pressure
measuring ranges and G ½ ush
Synthetic oil
With G 1 hygienic and TRI-CLAMP®1 ½" and 2"
process connections
KN92 medicinal white mineral oil, FDA-compliant per CFR 172.878 and 21 CFR
178.3620(a); conform to USP, EP and JP
Surface roughness of wetted parts Process connection G 1 hygienic Ra ≤ 0.8 µm (except for weld seam)
Process connection TRI-CLAMP®
1 ½" and 2"
Ra ≤ 0.76 μm per ASME BPE SF3
(except for weld seam)
Options for specic media
Oil- and grease-free Residual hydrocarbon < 1,000 mg/m²
Oxygen, oil- and grease-free Residual hydrocarbon < 200 mg/m²
Max. permissible temperature -20 ... +60 °C [-4 ... +140 °F]
Medium temperature limit
Process connections with pressure port and
G ½ B ush
-20 ... +85 °C [-4 ... +185 °F]
Process connection G 1 hygienic ■-20 ... +100 °C [-4 … +212 °F] (+135 °C [+275 °F] max. 1h)
■-20 ... +125 °C [-4 … +257 °F] (+150 °C [+302 °F] max. 1h) (option)
Process connections TRI-CLAMP®1 ½" and 2" -20 ... +100 °C [-4 … +212 °F] (+135 °C [+275 °F] max. 1h)
Ambient temperature limit -20 ... +80 °C [-4 ... +176 °F]
Storage temperature limit -20 ... +70 °C [-4 ... +158 °F]
Service life
Switching cycles 100 million
Load cycle (mechanical) 2) 100 million or 10 million for measuring ranges > 600 bar/7,500 psi
1) The overpressure limit is based on the sensor element used. Depending on the selected process connection and seal, restrictions in overpressure limit can result.
2) Not valid for G 1 hygienic and TRI-CLAMP®1 ½" and 2"

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Dimensions in mm [in]
Pressure switch with circular connector M12 x 1 (4-pin and 5-pin)
Weight: approx. 220 g [7.76 oz]
[∅1.50]
[∅1.38]
[1.42][1.02]
[0.79] [2.83]
[∅1.16]
[1.06]
9. Specications