WIKA MH-4-CAN User manual

Operating instructions
Betriebsanleitung
Mode d’emploi
Manual de instrucciones
EN
DE
FR
ES
Pressure sensor
Drucksensor, Typ MH-4-CAN Seite 16 - 29
Pressure sensor, model MH-4-CAN Page 2 - 15
Capteur de pression, type MH-4-CAN Page 30 - 43
Sensor de presión, modelo MH-4-CAN Página 44 - 57

2WIKA operating instructions pressure sensor, model MH-4-CAN
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Contents
Contents
1. General information 3
2. Short overview 4
3. Safety 4
4. Mounting 7
5. Faults 9
6. Maintenance 10
7. Dismounting, return and disposal 11
8. Specications 12

3WIKA operating instructions pressure sensor, model MH-4-CAN
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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 instrument.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.com
- Contact: Tel.: [phone]
[email protected]
- Data sheet: PE 83.02
- Declaration of conformity: Online at www.wika.de
- Additional instruction: Special Documentation CANopen
Special Documentation SAE J1939
- Technical information: IN 00.14 “Tapped holes for process connections” at www.wika.com
IN 00.50 “Electrical mounting” at www.wika.com
© 03/2023 WIKA Alexander Wiegand SE & Co. KG
All rights reserved.
WIKA®is a registered trademark in various countries.

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2. Short overview / 3. Safety
2. Short overview
2.1 Overview





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.
Electrical connection (depending on version)
Case, spanner ats
Case
Process connection, spanner ats (option)
Process connection, thread

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3. Safety
Information
The signal word points out useful tips, recommendations and information for ecient and trouble-free
operation.
3.2 Intended use
The pressure sensor 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
sensor, and its media resistance, within the application through proper choice of materials and maintenance cycles.
→ For performance limits, see chapter 8 “Specications”
The mounting, dismounting, installation, parameterisation and maintenance of the pressure sensor in industrial
environments absolutely requires suitably skilled personnel in accordance with chapter 3.4 “Personnel qualication”.
The model MH-4-CAN 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.
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.
3.3 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 sensor
■Use in hazardous areas
■Use with abrasive and viscous media
■Use for refrigeration and air-conditioning applications
■Use in water pumps

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3. Safety
3.4 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
regulations, current standards and directives, must be capable of carrying out the work described and independently
recognising potential hazards.
3.5 Labelling, safety marks
Product label (example)
Article number Output signal Selectable additional text
Digital serial number Auxiliary power Pin assignment
Serial number Approvals 11 Maximum current supply
Measuring range Coded date of manufacture
Before mounting and commissioning the instrument, ensure you read the operating instructions!
DC voltage
Do not dispose of with household waste. Ensure a proper disposal in accordance with national regula-
tions.

   
  


11


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4. Mounting
4. Mounting
4.1 Mechanical mounting
Only use the pressure transmitter if it is in perfect condition with respect to safety.
Prior to commissioning, the pressure transmitter must be subjected to a visual inspection.
■Leaking liquid is indicative of damage.
■Obvious damage must be reported immediately.
Mounting the instrument
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 faces.
2.At the mounting point, screw the pressure sensor in hand-tight.
3.Tighten with a torque wrench using the spanner ats.
■Hexagon at the case, spanner width 22 mm:
- Open-ended spanner: 30 Nm ±5 %
- Socket wrench: 50 Nm ±5 %
■Optional hexagon at the process connection, spanner width 27 mm:
- Open-ended spanner: 50 Nm ±5 %
- Socket wrench: 50 Nm ±5 %
Operation with vented electrical output
Hexagon (SW 22) integrated
into case
≈35
[1.38]
⬡22
Additional hexagon (SW 27)
above the process connection
≈55
[2.17]
⬡27

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4. Mounting
The instruments must not be sealed at the venting, e.g. painted over, otherwise the pressure compensation to the
environment is not guaranteed and the accuracy cannot be maintained.
The following must be observed when using the vented electrical connection: Avoid contact of the electrical connection
with diesel fuel.The installation conditions for the pressure sensor must be selected so that contact with salty ambient
conditions (air, liquids) is avoided.
For information on tapped holes and welding sockets, see technical information IN 00.14 at www.wika.com
4.2 Electrical mounting
Voltage supply
For instruments without UL, CSA or cURus approval:
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 recom-
mended, 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 9.4 of UL/EN/IEC 61010-1 or UL/EN/IEC 60950-1 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 sensor be used at this altitude.
Shielding and grounding
The pressure sensor shall be included in the equipotential bonding / grounding of the application via the process
connection.

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Since the electrical connection is made of plastic, it is necessary to use a cable with the following shield connection:
Pin assignment
→For pin assignments, see chapter 3.5 “Labelling, safety marks”
→For auxiliary power, see chapter 3.5 “Labelling, safety marks”
5. 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.
▶Contact the manufacturer.
▶If a return is needed, please follow the instructions given in chapter 7.2 “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 sensor is mounted correctly, mechanically and electrically.
4. Mounting / 5. Faults

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Faults Causes Measures
Plastic has faded UV irradiation No measures required
Discolouration is harmless
No output signal Cable break Check the continuity, and if necessary exchange
the cable
No/wrong auxiliary power Correct the auxiliary power
No/wrong output signal Wiring error Rectify the wiring
Constant output signal upon
change in pressure
Mechanical overload caused by overpressure Replace instrument; if it fails repeatedly, contact
the manufacturer.
Signal span too small/drops Mechanical overload caused by overpressure Replace instrument; if it fails repeatedly, contact
the manufacturer.
Sealing/sealing face damaged or soiled,
sealing does not have a tight t, threads
jammed
Clean the sealing/sealing face, replace sealing
if applicable
Signal span varies/inaccurate EMC interference sources in the environment,
e.g., frequency converter
Shield instrument; cable shield; remove source
of interference
Operating temperature too high/low Lower/increase the temperature
Instrument not grounded Ground the instrument
Strongly uctuating pressure of the process
medium
Damping; consulting by the manufacturer
Deviating zero point signal Operating temperature too high/low Lower/increase the temperature
Other mounting position Adjust the zero point
Overpressure limit exceeded Reduce the pressure
5. Faults

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6. Maintenance / 7. Dismounting, return and disposal
6. Maintenance
6.1 Maintenance
This pressure sensor is maintenance-free.
Repairs must only be carried out by the manufacturer.
6.2 Cleaning
Only use commercially available and solvent-free cleaning agents.
7. Dismounting, return and disposal
7.1 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 sensor before dismounting it.
7.2 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.

12 WIKA operating instructions pressure sensor, model MH-4-CAN
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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 regula-
tions.
8. Specications
Depending on the selected instrument version (e.g. sealings), 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 83.02.
Specications
Measuring range →See product label
Max. measured error per IEC 62828-1 1 % of span
Maximum working pressure →Corresponds to the upper measuring range value / measuring range full scale value
Overpressure limit per IEC 62828-1 1)
Measuring range ≤ 400 bar
[≤ 5.000 psi]
3 times
Measuring range 600 bar [8,000 psi] 2 times
Total probable error per IEC 62828-2 →See below
8.Specications

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8.Specications
Specications
Vacuum resistance Yes
Output signal →See product label
Auxiliary power →See product label
Current supply →See product label
Short-circuit resistance CAN-High/CAN-Low vs. U+/U- (U+: ≤ DC 24 V)
Pin assignment →See product label
Reverse polarity protection U+ vs. U- (no reverse polarity protection with ratiometric output signal)
Insulation voltage DC 500 V
Material (wetted) Stainless steel 304L, PH grade steel
Medium temperature limit -40 ... +100 °C [-40 ... +212 °F]
Ambient temperature limit -40 ... +85 °C [-40 ... +185 °F]
Storage temperature limit -40 ... +70 °C [-40 ... +158 °F]
Service life > 100 million load cycles
1) The overpressure limit is based on the sensor element used. Depending on the selected process connection and sealing, restrictions in overpressure limit can
result.
8.Specications

14 WIKA operating instructions pressure sensor, model MH-4-CAN
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Total probable error
Including non-linearity 1), hysteresis, non-repeatability, zero point and end value deviation, temperature error, tempera-
ture hysteresis and error through atmospheric pressure uctuations
-3
-2,5
-2
-1,5
-1
-0,5
0
0,5
1
1,5
2
2,5
3
-40 -20 0 20 40 60 80
Measuring ranges ≥ 160 bar
Measuring ranges < 160 bar
Temperature range [°C]
Total probable error [% of span]
-3
-2,5
-2
-1,5
-1
-0,5
0
0,5
1
1,5
2
2,5
3
-40 -20 0 20 40 60 80 100
]napsfo%[BETdnaBrorrElatoT
Temperature Range [°C]
1) Applies to SAE J1939 with zero point +0.5 % to end value -0.5 %.
8.Specications

15WIKA operating instructions pressure sensor, model MH-4-CAN
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8.1 Dimensions in mm [in]
Circular connector M12 x 1, 5-pin
Weight: 80 g [0.18 lbs]
8.Specications

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Inhalt
Inhalt
1. Allgemeines 17
2. Kurzübersicht 18
3. Sicherheit 18
4. Montage 21
5. Störungen 23
6. Wartung 24
7. Demontage, Rücksendung und Entsorgung 25
8. Technische Daten 26

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1. Allgemeines
1. Allgemeines
Vor Beginn aller Arbeiten Betriebsanleitung lesen! Zum späteren Gebrauch aufbewahren!
■Diese Betriebsanleitung gibt wichtige Hinweise zum Umgang mit dem Druckmessgerät. Voraussetzung für sicheres
Arbeiten ist die Einhaltung aller angegebenen Sicherheitshinweise und Handlungsanweisungen.
■Es gelten die allgemeinen Geschäftsbedingungen der WIKA Alexander Wiegand SE & Co. KG.
■Weitere Informationen:
- Internet-Adresse: www.wika.de / www.wika.com
- Kontakt: Tel.: [phone]
[email protected]
- Datenblatt: PE 83.02
- Konformitätserklärung: Online unter www.wika.de
- Zusatzinformation: Special Documentation CANopen
Special Documentation SAE J1939
- Technische Information: IN 00.14 „Einschraublöcher für Prozessanschlüsse“ unter www.wika.de
IN 00.50 „Elektrische Montage“ unter www.wika.de
© 03/2023 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.

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2. Kurzübersicht / 3. Sicherheit
2. Kurzübersicht
2.1 Übersicht





3. Sicherheit
3.1 Symbol-undBegriserklärung
WARNUNG!
Das Signalwort bezeichnet eine Gefährdung mit einem mittleren Risikograd, die, wenn sie nicht
vermieden wird, den Tod oder eine schwere Verletzung zur Folge haben kann.
VORSICHT!
Das Signalwort bezeichnet eine Gefährdung mit einem niedrigen Risikograd, die, wenn sie nicht
vermieden wird, eine geringfügige oder mäßige Verletzung zur Folge haben kann.
Elektrischer Anschluss (je nach Ausführung)
Gehäuse, Schlüsseläche
Gehäuse
Prozessanschluss, Schlüsseläche (Option)
Prozessanschluss, Gewinde

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3. Sicherheit
Information
Das Signalwort hebt nützliche Tipps und Empfehlungen sowie Informationen für einen ezienten und
störungsfreien Betrieb hervor.
3.2 BestimmungsgemäßeVerwendung
Der Drucksensor darf nur in solchen Anwendungen verwendet werden, die innerhalb seiner technischen Leistungs-
grenzen, insbesondere hinsichtlich dessen Materialbeständigkeitsgrenze, Grenzleckagerate sowie zulässigen Tempe-
ratur- und Druckgrenzwerten liegen.
Es obliegt allein der Verantwortung des Herstellers bzw. Betreibers einer Maschine oder Anlage die Eignung des
Drucksensors und dessen Medienbeständigkeit in der Anwendung durch korrekte Materialwahl und Wartungszyklen
sicherzustellen.
→ Leistungsgrenzen siehe Kapitel 8 „Technische Daten“
Die Montage, Demontage, Installation, Parametrierung und Wartung des Drucksensors im industriellen Umfeld erfor-
dert unbedingt geeignetes Fachpersonal gemäß Kapitel 3.4 „Personnel qualication“.
Der Typ MH-4-CAN wurde für die Druckmessung nicht gefährlicher Fluide, Flüssigkeiten und Gase entwickelt (Einstu-
fung gemäß Richtlinie 2014/68/EU Artikel 13, Verordnung (EG) Nr. 1272/2008, bzw. GHS1)), die v. a. in der Kühlung,
Schmierung, Reinigung oder Kraftübertragung in industriellen Maschinen eingesetzt werden.
Das Gerät ist ausschließlich für den hier beschriebenen bestimmungsgemäßen Verwendungszweck konzipiert und
konstruiert und darf nur dementsprechend verwendet werden.
Ansprüche jeglicher Art aufgrund von nicht bestimmungsgemäßer Verwendung sind ausgeschlossen.
3.3 Fehlgebrauch
Jede über die bestimmungsgemäße Verwendung hinausgehende oder andersartige Benutzung gilt als Fehlgebrauch.
Folgende Punkte gelten insbesondere als Fehlgebrauch und sind nicht zulässig:
■Einsatz in Sicherheits- oder in Not-Aus-Einrichtungen
■Eigenmächtige Umbauten am Drucksensor
■Einsatz in explosionsgefährdeten Bereichen
■Einsatz mit abrasiven und viskosen Messstoen
■Einsatz in Kälte- und Klimatechnik
■Einsatz in Wasserpumpen

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3. Sicherheit
3.4 Personalqualikation
Fachpersonal
Das vom Betreiber autorisierte Fachpersonal muss aufgrund seiner fachlichen Ausbildung, seiner Kenntnisse der
Mess- und Regelungstechnik und seiner Erfahrungen sowie Kenntnis der landesspezischen Vorschriften, geltenden
Normen und Richtlinien in der Lage sein, die beschriebenen Arbeiten auszuführen und mögliche Gefahren selbststän-
dig zu erkennen.
3.5 Beschilderung, Sicherheitskennzeichnungen
Typenschild (Beispiel)
Artikelnummer Ausgangssignal Wählbarer Zusatztext
Digitale Seriennummer Hilfsenergie Anschlussbelegung
Seriennummer Zulassungen 11 Maximale Stromaufnahme
Messbereich Kodiertes Herstelldatum
Vor Montage und Inbetriebnahme des Gerätes unbedingt die Betriebsanleitung lesen!
Gleichspannung
Nicht mit dem Hausmüll entsorgen. Für eine geordnete Entsorgung gemäß nationaler Vorgaben
sorgen.


   
  


11