WIKA MH-3 Operating Instructions Manual

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Operating instructions Betriebsanleitung Mode d‘emploi Manual de instrucciones

OEM pressure sensor, model MH-3

OEM-Drucksensor, Typ MH-3

Capteur de pression OEM, type MH-3

Sensor de presión para OEM, modelo MH-3

Examples/Beispiele/Exemples/Ejemplos

Operating instructions model MH-3

Betriebsanleitung Typ MH-3

Page 3 - 22

Seite 23 - 42

Mode d‘emploi

Manual de instrucciones modelo

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!

type MH-3 Page 43 - 62

MH-3 Página 63 - 82

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!

WIKA operating instructions OEM pressure sensor, model MH-3

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Contents

1. General information 4

2. Design and function 5

3. Safety 6

4. Transport, packaging and storage 8

5. Commissioning, operation 9

6. Faults 11

7. Maintenance and cleaning 12

8. Dismounting, return and disposal 13

9. Specifications 15

Declarations of conformity can be found online at www.wika.com

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3WIKA operating instructions, OEM pressure sensor, model MH-3

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 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 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 modifications.

■

Further information:

- Internet address: www.wika.de / www.wika.com

- Relevant data sheet: PE 81.59

- Application consultant:

Tel.: +49 9372 132-0 Fax: +49 9372 132-406 info@wika.com

WIKA operating instructions, OEM pressure sensor, model MH-3

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2. Design and function

2.1 Overview

Electrical connection (depending on version)



Case





Process connection, spanner flats



Process connection, thread









2.2 Signal clamping (not for MH-3-HY)

The output signal of a pressure sensor can be above the nominal maximum signal value, if no signal clamping has been set. Likewise, the output signal can also be below the nominal minimum signal value. This undefined condition can cause an error in the machine (software) of the customer. Signal clamping limits the output signal to a minimum or maximum value which is to be defined by the customer.

2.3 Diagnostic function

By means of the output signal, fault conditions can be detected and evaluated via software. Thus it is possible to differentiate between permanent and temporary faults.

2.4 CDS system

All process connections are available with the CDS system. The diameter of the pressure port is reduced in order to counteract pressure spikes and cavitation.

2.5 Scope of delivery

■

Pressure sensor

■

Operating instructions (for model MH-3-HY)

Cross-check scope of delivery with delivery note.

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5WIKA operating instructions, OEM pressure sensor, model MH-3

3. Safety

3.1 Explanation of symbols

3.2 Intended use

The pressure sensor is used for measuring pressure. The measured pressure is output as an electrical signal.

The pressure sensor model MH-3 is intended for use in mobile working machines.

The MH-3-HY pressure sensor for mobile hydrogen applications is typically used to monitor tank pressure and the pressure after the reducing valve in hydrogen-powered vehicles, especially industrial trucks, utility/municipal vehicles and buses. The exact position of the sensor is therefore dependent upon the customer and application.

Only use the pressure sensor in applications that lie within its technical performance limits (e.g. max. ambient temperature, material compatibility, ...).

→ For performance limits see chapter 9 “Specifications”.

The instrument has been designed and built solely for the intended use described here, and may only be used accordingly.

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.

Information

... points out useful tips, recommendations and information for efficient and trouble-free operation.

The manufacturer shall not be liable for claims of any type based on operation contrary to the intended use.

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 specification. 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 limit must never be exceeded, even when failures occur in the end-use application. Loads above the overload limit can cause irreversible damage, which can lead, for example, to permanent measuring errors.

WIKA operating instructions, OEM pressure sensor, model MH-3

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3. Safety

Specific notes based on the medium hydrogen (model MH-3-HY)

The sensor offered uses the wetted materials 2.4711 and 1.4404. These materials are resistant to hydrogen embrittlement. With a temperature of up to 30 °C, the stability under hydrogen influence is typically 1 %/year, maximum 3 %/year.

Due to hydrogen diffusion into the sensor structures, a signal drift can occur dependent upon the time. The time until the occurrence of a relevant signal drift and the size of the signal drift depends mainly on factors such as the temperature of the hydrogen, hydrogen content in the medium, and the diaphragm thickness of the pressure sensor used.

It is explicitly recommended for the user to test the selected product version for suitability in the intended application(s) with the specified ambient conditions.

3.3 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-specific regulations, current standards and directives, are capable of carrying out the work described and independently recognising potential hazards.

3.4 Personal protective equipment

The personal protective equipment is designed to protect the skilled personnel from hazards that could impair their safety or health during work. When carrying out the various tasks on and with the instrument, the skilled personnel must wear personal protective equipment.

Follow the instructions displayed in the work area regarding personal protective equipment!

The requisite personal protective equipment must be provided by the operating company.

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7WIKA operating instructions, OEM pressure sensor, model MH-3

3. Safety/4. Transport, packaging and storage

3.5 Labelling, safety marks

Product labels

wika.com

MH-3

1 Product no. 3 Coded date of manufacture 2 Serial no. 4 Measuring range

1 Product no. 4 Specifications 2 Approvals 5 Coded date of manufacture 3 Nominal working pressure (NWP)

The nominal working pressure per 79/2009/EC corresponds to a nominal working pressure at 15 °C

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 see chapter 9 “Specifications”

■

Humidity: 67 % relative humidity (no condensation)

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

■

Hazardous environments, flammable atmospheres

WIKA operating instructions, OEM pressure sensor, model MH-3

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4.Transport, .../5. Commissioning, operation

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. Wrap the instrument in an antistatic plastic film.

2. Place the instrument, along with shock-absorbent material, in the packaging.

3. If stored for a prolonged period of time (more than 30 days), place a bag containing a desiccant inside the packaging.

5. Commissioning, operation

5.1 Mounting the instrument

Requirements for mounting point

The mounting point must meet the following conditions:

■

Sufficient space for a safe electrical installation.

■

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 “Specifications”

Sealing variants

Parallel threads

Seal the sealing face  with flat gasket, lens-type sealing ring or WIKA profile sealing.

Tapered threads

Wrap threads with sealing material (e.g. PTFE tape).

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per EN 837

NPT, R and PT



per ISO 1179-2

(formerly DIN 3852-E)

9WIKA operating instructions, OEM pressure sensor, model MH-3

5. Commissioning, operation

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.

1. Seal the sealing face (→ see “Sealing variants”).

At the mounting point, screw the pressure sensor in hand-tight.

Tighten with a torque spanner using the spanner flats.

5.2 Connecting the instrument to the electric system

Requirements for voltage supply

Supply voltage see chapter 9 „Specifications“.

Requirements for electrical connection

■

Cable diameter matches the cable bushing of the mating connector.

■

Cable gland and seals of the mating connector are correctly seated.

■

With cable outlets, no humidity can ingress at the cable end.

Requirement for shielding and grounding

■

The pressure sensor must be grounded via the process connection (model MH-3).

■

The connection is made in the vehicle with a suitable power supply/control unit that complies with regulation 10. (MH-3-HY).

■

The connection to vehicle ground is made via the process connection (MH-3-HY).

→ For contact details see chapter 1 “General information” or the back

page of the operating instructions.

In accordance with EN 61326-1, in case of outdoor installations, faults caused by surge voltages must be considered. To protect the instrument, it must be connected using a shielded cable. The shield of the cable must be connected on at least one side to ground or a suitable reference potential. Optionally, a suitable external measure can be taken to ensure protection against surge voltages.

Connecting the instrument

1. Assemble the mating connector or cable outlet.

→ See “Pin assignments”

Establish the plug connection.

Pin assignments

See chapter 9 “Specifications”.

WIKA operating instructions, OEM pressure sensor, model MH-3

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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 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 8.2

“Return”.

WARNING! Physical injuries and damage to property and the environment caused by hazardous media

Upon contact with hazardous media (e.g. oxygen, acetylene, flammable or toxic substances), harmful media (e.g. corrosive, toxic, carcinogenic, radioactive), 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, aggressive 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 (see chapter 3.4 “Personal protective equipment”).

For contact details see chapter 1 “General information” or the back page

of the operating instructions.

Faults Causes Measures

Plastic has faded UV irradiation No measures required

No output signal Cable break Check the continuity, and if

No/wrong supply voltage Rectify the supply voltage No/wrong output signal Constant output signal upon

change in pressure

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Wiring error Rectify the wiring

Mechanical overload caused

by overpressure

Discolouration is harmless

necessary exchange the cable

Replace instrument; if it fails repeatedly, contact the manufacturer.

11WIKA operating instructions, OEM pressure sensor, model MH-3

6. Faults/7. Maintenance and cleaning

Faults Causes Measures

Signal span too small/drops Mechanical overload caused

by overpressure

Signal span varies/inaccurate

Deviating zero point signal Operating temperature too

Diaphragm damaged, e.g. due to impacts, abrasive/aggressive medium; corrosion at diaphragm or process connection; transmission medium missing

Sealing/sealing face damaged or soiled, sealing does not have a tight fit, threads jammed

EMC interference sources in the environment; e.g. frequency converter

Operating temperature too high/low

Instrument not grounded Ground the instrument Strongly fluctuating pressure of

the process medium

high/low Other mounting position Adjust the zero point Overpressure limit exceeded Reduce the pressure

If complaint is unjustified, we will charge you the complaint processing fees.

Replace instrument; if it fails repeatedly, contact the manufacturer.

Clean the sealing/sealing face, replace sealing if applicable

Shield instrument; cable shield; remove source of interference

Lower/increase the temperature

Dampening; consulting by the manufacturer

Lower/increase the temperature

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.

WIKA operating instructions, OEM pressure sensor, model MH-3

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7. .../8. Dismounting, return and disposal

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.

8. Dismounting, return and disposal

8.1 Dismounting

WARNING! Physical injuries and damage to property and the environment caused by hazardous media

▶

Should a failure occur, aggressive media with extremely high temperature and under high pressure or vacuum may be present at the instrument.

▶

Wear the requisite protective equipment (see chapter 3.4 “Personal protective equipment”).

Dismounting the instrument

1. Disconnect the instrument from the mains.

Disconnect the electrical connection.

Unscrew the instrument with a spanner using the spanner flats.

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13WIKA operating instructions, OEM pressure sensor, model MH-3

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-specific waste disposal regulations.

Do not dispose of with household waste. Ensure a proper disposal in accordance with national regulations.

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WIKA operating instructions, OEM pressure sensor, model MH-3

9. Specifications

9.1 Measuring ranges

Gauge pressure MH-3 MH-3-HY

bar 0 ... 6 x -

0 ... 10 x 0 ... 16 x 0 ... 20 - x 0 ... 25 x x 0 ... 40 x x 0 ... 60 x x 0 ... 100 x x 0 ... 160 x x 0 ... 250 x x 0 ... 400 x x 0 ... 600 x x

psi 0 … 100 x -

0 … 160 x 0 … 200 x 0 ... 300 x x 0 ... 500 x x 0 ... 1,000 x x 0 ... 1,500 x x 0 ... 2,000 x x 0 ... 3,000 x x 0 ... 5,000 x x 0 ... 8,000 x x

MPa (1 bar = 0.1 MPa)

Overload safety: 2 times (deviating for individual psi measuring ranges of model MH-3-HY) Vacuum tightness: Yes

9.2 Output signals

Signal type Signal MH-3 MH-3-HY

Current (2-wire) 4 ... 20 mA x x Voltage (3-wire) DC 0 ... 10 V x -

DC 1 ... 5 V x DC 1 ... 6 V x -

Ratiometric DC 0.5 ... 4.5 V x x

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15WIKA operating instructions, OEM pressure sensor, model MH-3

9. Specifications

Load

■

4 ... 20 mA: ≤ (power supply - 10 V)/0.02 A

■

DC 0 ... 10 V: > 5 kΩ

■

DC 1 ... 5 V: > 2.5 kΩ

■

DC 1 ... 6 V: > 5 kΩ

■

DC 0.5 ... 4.5 V: > 4.5 kΩ

9.3 Voltage supply

Supply voltage

The power supply depends on the selected output signal.

■

4 ... 20 mA: DC 10 ... 36 V

■

DC 0 ... 10 V: DC 14 ... 36 V

■

DC 1 ... 5 V: DC 8 ... 36 V

■

DC 1 ... 6 V: DC 9 ... 36 V

■

DC 0.5 ... 4.5 V: DC 4.5 ... 5.5 V

Current supply

The current supply depends on the selected output signal.

■

4 ... 20 mA < 30 mA

■

DC 0 ... 10 V < 10 mA

■

DC 1 ... 5 V < 10 mA

■

DC 1 ... 6 V < 10 mA

■

DC 0.5 ... 4.5 V < 10 mA

9.4 Reference conditions (per IEC 61298-1)

Temperature: 15 ... 25 °C [59 ... 77 °F] Atmospheric pressure: 860 ... 1,060 mbar [12.5 ... 15.4 psi] Air humidity: 45 ... 75 % r. h. Supply voltage: DC 24 V Mounting position: Calibrated in vertical mounting position with pressure connection facing downwards.

9.5 Accuracy specifications

Accuracy at reference conditions

≤ ±1 % of span for measuring ranges ≥ 40 bar [≥ 500 psi] ≤ ±2 % of span for measuring ranges < 40 bar [< 500 psi]

Including non-linearity, hysteresis, zero offset and end value deviation (corresponds to measured error per IEC 61298-2).

Non-linearity (per IEC 61298-2)

≤ ±0.25 % of span for measuring ranges ≥ 40 bar [≥ 500 psi] ≤ ±0.40 % of span for measuring ranges < 40 bar [< 500 psi]

WIKA operating instructions, OEM pressure sensor, model MH-3

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9. Specifications

Temperature error at -40 ... +100 °C [-40 ... +212 °F]

Mean temperature coefficient of zero point:

≤ ±0.15 % of span/10 K for measuring ranges ≥ 40 bar [≥ 500 psi]

For measuring ranges < 40 bar [< 500 psi]: On request

Mean temperature coefficient of span: ≤ ±0.08 % of span/10 K

Settling time

≤ 2 ms

Long-term stability

≤ ±0.2 % of span/year for measuring ranges ≥ 40 bar [≥ 500 psi] ≤ ±0.3 % of span/year for measuring ranges < 40 bar [< 500 psi]

For model MH-3-HY: Medium temperature range -40 ... +30 °C [-40 ... +86 °F]:

typ. ≤ ±1 %/max. ≤ ±3 % of span/year

It is explicitly recommended for the user to test the selected product version for suitability in the intended application(s) with the specified ambient conditions.

9.6 Operating conditions

Ingress protection (per IEC 60529)

The ingress protection depends on the type of electrical connection.

Electrical connection Ingress protection 1)MH-3 MH-3-HY

Deutsch DT04-3P (3-pin) IP67 x Delphi connector Metri-Pack

series 150, 3-pin Circular connector M12 x 1 (4-pin) IP67 x AMP Superseal connector 1.5 series,

3-pin Cable outlet (0.5/1/2.5 m), 2-pin IP6K9K x Cable outlet (0.5/1/2.5 m), 3-pin IP6K9K x

1) The stated ingress protection only applies when plugged in using mating connectors that have the appropriate ingress protection.

IP67 x x

Vibration resistance

20 g (per IEC 60068-2-6)

Shock resistance

500 g (per IEC 60068-2-27)

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17WIKA operating instructions, OEM pressure sensor, model MH-3

9. Specifications

Permissible temperature ranges

MH-3 MH-3-HY

Ambient -40 ... +100 °C

Medium -40 ... +125 °C

Storage -40 ... +100 °C

[-40 ... +212 °F]

[-40 ... +257 °F]

[-40 ... +212 °F]

9.7 Electrical connections

Short-circuit resistance: S+ to U

Reverse polarity protection: U+ to U- (no reverse polarity protection with ratiometric output signal) Insulation voltage: DC 500 V

Connection diagrams

Circular connector M12 x 1 (4-pin) 2-wire 3-wire

1 1

3 3

- 4

-40 ... +85 °C [-40 ... +185 °F]

Metri-Pack series 150 (3-pin) 2-wire 3-wire

B B

A A

- C

AMP Superseal 1.5 (3-pin) 2-wire 3-wire

3 3

1 1

- 2

Deutsch DT04-3P (3-pin) 2-wire 3-wire

WIKA operating instructions, OEM pressure sensor, model MH-3

A A

B B

- C

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9. Specifications

Cable outlet 2-wire 3-wire

Wire cross-section 0.75 mm

(with end splices) Cable diameter 6.6 mm Cable length 0.5 m or 2 m

Legend

Positive power supply terminal

U-Negative power supply terminal

Analogue output

9.8 Process connections

brown brown

green green

- white

Standard Thread

size

Max. nominal pressure

MH-3 MH-3-HY Sealing and temperature

range Standard

Option (MH-3)

(MH-3)

EN 837 G ¼ B 600 bar

[8,000 psi]

DIN EN ISO 1179-2 (formerly DIN 3852-E)

DIN EN ISO 9974-2 (formerly DIN 3852-E)

ISO 6149-2 M14 x 1.5 600 bar

SAE J514 Fig.34B 7/16-20

ANSI/ASME B1.20.1 ¼ NPT 600 bar

1) Details must be tested separately in the respective application. The specified values for the max. nominal pressure serve only as a rough orientation. The values depend on the temperature, the seals used, the selected torque, the type and the material of the mating thread and the prevailing operating conditions.

2) Model MH-3-HY is delivered without sealing. Depending on the process connection and measuring range, including overload safety, an appropriate sealing has to be selected.

G ¼ A 600 bar

[8,000 psi]

M14 x 1.5 600 bar

[8,000 psi]

600 bar

UNF-2A

[8,000 psi]

x x Copper

-40 ... +125 °C [-40 ... +257 °F]

x - NBR

-40 ... +100 °C [-40 ... +212 °F]

x - - -

x x - -

Stainless steel

-40 ... +125 °C [-40 ... +257 °F]

FPM/FKM

-40 ... +125 °C [-40 ... +257 °F]

The sealings listed under “Standard” are included in the delivery (only for model MH-3).

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19WIKA operating instructions, OEM pressure sensor, model MH-3

9. Specifications

CDS system

All process connections are available with the CDS system. The diameter of the pressure port is reduced in order to counteract pressure spikes and cavitation (see fig.1).

Illustration of the CDS system

9.9 Materials

Wetted parts

MH-3: Stainless steel MH-3-HY: Stainless steel, 2.4711

Non-wetted parts

Highly resistant glass-fibre reinforced plastic (PBT)

9.10 Dimensions in mm

with M12 x 1 circular connector with Metri-Pack series 150 with Deutsch DT04-3P

WIKA operating instructions, OEM pressure sensor, model MH-3

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9. Specifications

with AMP Superseal 1.5

with cable outlet

G L1

G ¼ B 13 [0.51]

G L1

¼ NPT 13 [0.51]

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G L1

M14 x 1.5 13.5 [0.53]

G L1

G ¼ A 14 [0.55] M14 x 1.5 14 [0.55]

G L1

7/16-20 UNF 12 [0.47]

21WIKA operating instructions, OEM pressure sensor, model MH-3

9. Specifications

9.11 Approvals

Logo Description Country MH-3 MH-3-HY

EU declaration of conformity

■

EMC directive, EN 61326 emission (group 1, class B) and immunity (industrial application)

■

Pressure equipment directive

■

RoHS directive

EAC

EMC directive

GOST

Metrology, measurement technology

MTSCHS

Permission for commissioning

MazInMetr

Metrology, measurement technology

EC79/2009

Type approval for hydrogen-powered vehicles

Manufacturer‘s information and certificates

Logo Description

- MTTF: > 100 years (only applies to model MH-3)

European Union x x

Eurasian Economic Community

Russia x -

Kazakhstan x -

European Union - x

x -

Approvals and certificates, see website

For information on tapped holes and welding sockets, see technical information IN 00.14 at www.wika.com.

For special models MH-30000 other technical specifications apply. Please note the specifications stated on the order confirmation and the delivery note.

For further specifications see WIKA data sheet PE 81.59 and the order documentation.

WIKA operating instructions, OEM pressure sensor, model MH-3

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Inhalt

1. Allgemeines 24

2. Aufbau und Funktion 25

3. Sicherheit 26

4. Transport, Verpackung und Lagerung 28

5. Inbetriebnahme, Betrieb 29

6. Störungen 31

7. Wartung und Reinigung 32

8. Demontage, Rücksendung und Entsorgung 33

9. Technische Daten 35

Konformitätserklärungen finden Sie online unter www.wika.de

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23WIKA Betriebsanleitung OEM-Drucksensor, Typ MH-3

1. Allgemeines

■

Das in der Betriebsanleitung beschriebene Gerät wird nach dem aktuellen Stand der Technik konstruiert und gefertigt. Alle Komponenten unterliegen während der Fertigung strengen Qualitäts- und Umweltkriterien. Unsere Managementsysteme sind

nach ISO 9001 und ISO 14001 zertifiziert.

■

Diese Betriebsanleitung gibt wichtige Hinweise zum Umgang mit dem Gerät. Voraussetzung für sicheres Arbeiten ist die Einhaltung aller angegebenen Sicherheitshinweise und Handlungsanweisungen.

■

Die für den Einsatzbereich des Gerätes geltenden örtlichen Unfallverhütungsvorschriften und allgemeinen Sicherheitsbestimmungen einhalten.

■

Die Betriebsanleitung ist Produktbestandteil und muss in unmittelbarer Nähe des Gerätes für das Fachpersonal jederzeit zugänglich aufbewahrt werden. Betriebsanleitung an nachfolgende Benutzer oder Besitzer des Gerätes weitergeben.

■

Das Fachpersonal muss die Betriebsanleitung vor Beginn aller Arbeiten sorgfältig durchgelesen und verstanden haben.

■

Es gelten die allgemeinen Geschäftsbedingungen in den Verkaufsunterlagen.

■

Technische Änderungen vorbehalten.

■

Weitere Informationen:

- Internet-Adresse: www.wika.de / www.wika.com

- Zugehöriges Datenblatt: PE 81.59

- Anwendungsberater:

Tel.: +49 9372 132-0 Fax: +49 9372 132-406 info@wika.com

WIKA Betriebsanleitung OEM-Drucksensor, Typ MH-3

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2. Aufbau und Funktion

2.1 Überblick

Elektrischer Anschluss (je nach Ausführung)



Gehäuse





Prozessanschluss, Schlüsselfläche

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Prozessanschluss, Gewinde

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2.2 Signalbegrenzung (nicht für MH-3-HY)

Das Ausgangssignal eines Drucksensors kann über dem nominellen maximalen Signalwert liegen, sofern keine Signalbegrenzung eingestellt ist. Ebenso kann das Ausgangssignal unter dem nominellen minimalen Signalwert liegen. Dieser undefinierte Zustand kann einen Fehler in der Maschine (Software) des Kunden verursachen. Die Signalbegrenzung beschränkt das Ausgangssignal auf einen vom Kunden zu definierenden Minimal- bzw. Maximalwert.

2.3 Diagnosefunktion

Anhand des Ausgangssignales lassen sich Fehlerzustände erkennen und mittels Software bewerten. Somit können permanente und temporäre Fehler unterschieden werden.

2.4 CDS-System

Alle Prozessanschlüsse verfügen über das CDS-System. Der Durchmesser des Druckkanals ist verringert, um Druckspitzen und Kavitation entgegenzuwirken

2.5 Lieferumfang

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Drucksensor

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Betriebsanleitung (bei Typ MH-3-HY)

Lieferumfang mit dem Lieferschein abgleichen.

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25WIKA Betriebsanleitung OEM-Drucksensor, Typ MH-3

3. Sicherheit

3.1 Symbolerklärung

WARNUNG!

... weist auf eine möglicherweise gefährliche Situation hin, die zum Tod

3.2 Bestimmungsgemäße Verwendung

Der Drucksensor dient der Messung von Druck. Der gemessene Druck wird als elektrisches Signal ausgegeben.

Der Drucksensor Typ MH-3 ist für den Einsatz in mobilen Arbeitsmaschinen bestimmt.

oder zu schweren Verletzungen führen kann, wenn sie nicht gemieden wird.

VORSICHT!

... weist auf eine möglicherweise gefährliche Situation hin, die zu geringfügigen oder leichten Verletzungen bzw. Sach- und Umweltschäden führen kann, wenn sie nicht gemieden wird.

Information

... hebt nützliche Tipps und Empfehlungen sowie Informationen für einen effizienten und störungsfreien Betrieb hervor.

Der Drucksensor MH-3-HY für mobile Wasserstoffanwendungen dient üblicherweise zur Überwachung des Tankdruckes und des Druckes nach dem Reduzierventil in wasserstoffbetriebenen Fahrzeugen, speziell Flurförderfahrzeugen, Nutz-/Kommunalfahrzeugen und Bussen. Die genaue Position des Sensors ist dabei Kunden- und Applikationsabhängig.

Den Drucksensor nur in Anwendungen verwenden, die innerhalb seiner technischen Leistungsgrenzen liegen (z. B. max. Umgebungstemperatur, Materialverträglichkeit, ...).

→ Leistungsgrenzen siehe Kapitel 9 „Technische Daten“

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.

WIKA Betriebsanleitung OEM-Drucksensor, Typ MH-3

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