WIKA MH-4 User manual

Operating instructions
Betriebsanleitung
Mode d'emploi
Manual de instrucciones
EN
DE
FR
ES
Pressure sensor, model MH-4
Drucksensor, Typ MH-4
Capteur de pression, Type MH-4
Sensor de presión, modelo MH-4
Pressure sensor, model MH-4

2
14170805.01 06/2020 EN/DE/FR/ES
WIKA operating instructions pressure sensor, model MH-4
EN
DE
FR
ES
Operating instructions model MH-4 Page 3 - 24
Betriebsanleitung Typ MH-4 Seite 25 - 46
Mode d'emploi type MH-4 Page 47 - 68
Manual de instrucciones modelo MH-4 Página 69 - 90
© 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.
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!

3WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
Contents
Declarations of conformity can be found online at www.wika.com.
Contents
1. General information 4
2. Design and functionn 5
2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Signal clamping . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Diagnostic function. . . . . . . . . . . . . . . . . . . . . . . 5
2.4 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . 5
3. Safety 6
3.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . 6
3.2 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3 Improper use. . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4 Personnel qualification . . . . . . . . . . . . . . . . . . . . . 8
3.5 Personal protective equipment. . . . . . . . . . . . . . . . . . . 8
3.6 Labelling, safety marks . . . . . . . . . . . . . . . . . . . . . 9
4. Transport, packaging and storage 9
4.1 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2 Packaging and storage . . . . . . . . . . . . . . . . . . . . . 9
5. Commissioning, operation 10
5.1 Mounting the instrument . . . . . . . . . . . . . . . . . . . . . 10
5.2 Connecting the instrument to the electric system . . . . . . . . . . . . 11
6. Faults 12
7. Maintenance and cleaning 14
7.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8. Dismounting, return and disposal 14
8.1 Dismounting . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.2 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9. Specications 16

4WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
1. General information
■The pressure sensor 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 81.63
- Application consultant: Tel.: [phone]
Fax: [phone]
[e-mail]
1. General information

5WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
2. Design and function
2. Design and functionn
2.1 Overview
Electrical connection (depending on version)
Case, spanner flats
Case
Process connection, spanner flats (option)
Process connection, thread





2.2 Signal clamping
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 Scope of delivery
■Pressure sensor
■Operating instructions
Cross-check scope of delivery with delivery note.

6WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
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.
Information
... points out useful tips, recommendations and information for efficient
and trouble-free operation.
3.2 Intended use
The pressure sensor is used for measuring pressure.The measured pressure is
output as an electrical signal.The pressure sensor is intended for use in mobile
working machines.The instrument is not suitable for applications in refrigeration and
air-conditioning technology nor for use in water pumps.
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”.
This instrument is not permitted to be used in hazardous areas!
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.
The model MH-4 has been developed for the pressure measurement of non-hazardous
fluids, liquids and gases (classification 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.

7WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
3. Safety
WARNING!
Physical injuries and damage to property and the environment
through exceeding the performance limits
Exceeding the performance limits can destroy the instrument and lead to
danger in the end-use application.
▶Only use the instrument in applications that lie within its technical
performance limits. → For performance limits, such as derating
(maximum current consumption at a corresponding medium
temperature), see chapter 9 “Specifications”
▶Any permanent operation in the overload range is not permitted. Above
the highest operating pressure permitted, up to the overload limit, the
pressure sensor is operating outside its specification.The overload
range 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.
▶The manufacturer or operator of the machine or plant in which the
product is used must ensure the compatibility of the materials of the
wetted parts with the medium used.
▶The pressure switch should not be used with abrasive or unstable
fluids, in particular not with hydrogen.
Special versions for oil and grease-free applications, as well as for use with oxygen
(dangerous fluid according to Directive 2014/68/EU Article 13, Regulation (EC)
No. 1272/2008, or GHS 1)), are available on request.
1) Globally Harmonized System of Classification, Labelling and Packaging of Chemicals
The (dis-)mounting, installation, parameterisation and maintenance of the model MH-4
in industrial environments absolutely requires suitably skilled personnel in accordance
with chapter 3.5 “Personal protective equipment”.
3.3 Improper use
WARNING!
Injuries through improper use
Improper use of the instrument can lead to hazardous situations and
injuries.
▶Refrain from unauthorised modifications to the instrument.
▶Do not use the instrument within hazardous areas.
Any use beyond or different to the intended use is considered as improper use.

8WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
3. Safety
3.4 Personnel qualification
WARNING!
Risk of injury should qualification be insufficient
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 qualifications described
below.
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.
3.5 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.
The design of the personal protective equipment must take into account all operating
parameters of the place of use.
The requisite personal protective equipment must be provided by the operating company.

9WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
3. Safety / 4. Transport, packaging and storage
3.6 Labelling, safety marks
Product label
P# Article number
Measuring range / Output signal / Power supply
Pin assignment
Approvals
Coded date of manufacture
S# Serial number
Symbols
Before mounting and commissioning the instrument, ensure you read the
operating instructions!
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.
CAUTION!
Damage through improper transport
With improper transport, a high level of damage to property can occur.
▶When unloading packed goods upon delivery as well as during inter-
nal transport, proceed carefully and observe the symbols on the
packaging.
▶With internal transport, observe the instructions in chapter 4.2
“Packaging and storage”.
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).


MH-4
  


10 WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
4. Transport, packaging ... / 5. Commissioning, operation
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
Store the pressure sensor 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 a plastic film.
2. Place the instrument, along with shock-absorbent material, in 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”
Strain relief
The cable of the cable outlet or the cable of the mating connector must be fixed via a
suitable strain relief.
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
per ISO 9974-2


Tapered threads
Wrap threads with sealing
material (e.g. PTFE tape).
NPT, R and PT

11WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
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.
→ 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 flats.
■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 %
5.2 Connecting the instrument to the electric system
Requirements for voltage supply
For power supply see product label
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 must ingress at the cable end.

12 WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
5. Commissioning, operation / 6. Faults
Requirement for shielding and grounding
The pressure sensor must be shielded and grounded in accordance with the grounding
concept of the plant. 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 connec-
ted 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.
→ For pin assignment see product label
2.Establish the plug connection.
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 tempera-
ture and under high pressure or vacuum may be present at the instru-
ment.
▶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.

13WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
6. Faults
Faults Causes Measures
Plastic has faded UV irradiation No measures required
Discolouration is harmless
No output signal Cable break Check the continuity, and if neces-
sary exchange the cable
No/wrong power supply Rectify the power supply
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 repea-
tedly, contact the manufacturer.
Signal span too
small/drops
Mechanical overload caused by
overpressure
Replace instrument; if it fails repea-
tedly, contact the manufacturer.
Sealing/sealing face damaged or
soiled, sealing does not have a
tight fit, 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 fluctuating 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
Overload safety exceeded Reduce the pressure
If complaint is unjustified, we will charge you the complaint processing fees.

14 WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
7. Maintenance and cleaning / 8. Dismounting, return ...
7. Maintenance and cleaning
7.1 Maintenance
This pressure sensor is maintenance-free.
Repairs must only be carried out by the manufacturer.
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
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.
▶Wash or clean the dismounted instrument, in order to protect persons
and the environment from exposure to residual media.
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, 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.
▶Wear the requisite protective equipment (see chapter 3.5 “Personal
protective equipment”).

15WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
8. Dismounting, return and disposal
Dismounting the instrument
1. Disconnect the instrument from the mains.
2.Disconnect the electrical connection.
3.Unscrew the instrument with a spanner using the spanner flats.
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, attach the material safety data sheet for
the corresponding medium.
▶For cleaning 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.

16 WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
9. Specifications
9. Specifications
Specifications
Measuring range See product label
Overload safety
Measuring range ≤ 400 bar
[≤ 5,000 psi]
3 times
Measuring range 600 bar
[≥ 8,000 ... ≤ 10,000 psi]
2 times
Measuring range 1,000 bar 1.5 times
Vacuum-tight Ye s
Output signal See product label
PermissibleloadinΩ
Current output (2-wire) ≤ (Power supply - 7.8 V) / 0.022 A
Voltage output (3-wire) ≥ Max. output voltage / 1 mA
Ratiometric output (3-wire) ≥ 4.5 k
Pulsewidth modulation ≥ 10 k
Power supply Max. power supply with cULus approval: DC 35 V
Current output (2-wire) 4 ... 20 mA DC 8 ... 36 V
Voltage output (3-wire) DC 0 ... 10 V DC 12 ... 36 V
DC 1 ... 10 V DC 12 ... 36 V
DC 0 ... 5 V DC 8 ... 36 V
DC 1 ... 5 V DC 8 ... 36 V
DC 0.5 V ... 4.5 V DC 8 ... 36 V
Ratiometric output (3-wire) DC 0.5 V ... 4.5 V DC 5 V ± 10 %
Pulsewidth modulation 10 … 90 % duty cycle min. DC 8 V, high level DC 1 ... 36 V
Total current consumption
Current output (2-wire) ≤ 25 mA
Voltage output (3-wire) ≤ 10 mA
Ratiometric output (3-wire) ≤ 10 mA
Pulsewidth modulation ≤ 10 mA
Signal damping (option) 2 / 4 / 9 / 18 / 37 / 75 / 150 ms
Switch-on time 200 ms
Non-linearity (per EN 61298-2,
BFSL)
≤ ±0.25 % of span
Long-term drift (per EN 61298-2,
BFSL)
≤ ±0.1 % of span

17WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
9. Specifications
Specifications
Permissible temperature
ranges
Depending on the sealing of the process connection, the
electrical connection and the cULus approval, the max.
ambient and medium temperature may be limited.
Ambient -40 … +125 °C [-40 … +257 °F]
Medium -40 … +125 °C [-40 … +257 °F]
Storage -40 … +70 °C [-40 … +158 °F]
Vibration resistance 40 g, 2,000 Hz (per IEC 60068-2-6)
Permanent vibration resis-
tance
10 g, 2,000 Hz (per IEC 60068-2-6)
Shock resistance 100 g, 11 ms (per IEC 60068-2-27)
EMC field
Current output (2-wire) 100 V/m (per ISO 11452-2)
Voltage output (3-wire) 100 V/m (per ISO 11452-2)
Ratiometric output (3-wire) 100 V/m, option: 60 V/m (per ISO 11452-2)
Pulsewidth modulation (3-wire) 30 V/m (per IEC 61326-2-3)
Service life 100 million load cycles
(10 million load cycles with measuring ranges > 400 bar
[5,000 psi])
Free-fall test
Individual packaging 1 m [3.28 ft] (following IEC 60721-3-2)
Multiple packaging 0.5 m [1.64 ft] (following EN IEC 60721-3-2)
IP ingress protection See “Electrical connections”
Materials
Wetted parts 304L, PH grade steel
Non-wetted parts 304L
Electrical connections made of highly resistant glass-fibre
reinforced plastic (PBT)
Pin assignment See product label
Short-circuit resistance S+ vs. U-
Reverse polarity protection U+ vs. U-
Overvoltage protection DC 48 V
DC 30 V with ratiometric output
Insulation voltage DC 500 V (optionally DC 850 V)
Approvals See product label

18 WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
Process connections
Standard Thread size Max. nominal
pressure
Sealing and temperature
range
Standard Option
ISO 1179-2
(formerly
DIN 3852-E)
G ¼ A 600 bar [8,700 psi] NBR
-40 … +100 °C
[-40 … +212 °F]
FPM/FKM
-20 … +125 °C
[-4 … +257 °F]
ISO 9974-2
(formerly
DIN 3852-E)
M14 x 1.5 600 bar [8,700 psi]
ISO 6149-2 M14 x 1.5 600 bar [8,700 psi]
JIS B2351-1 G ¼ x 10, form O
with collar
600 bar [8,700 psi] NBR
-40 … +100 °C
[-40 … +212 °F]
FPM/FKM
-20 … +125 °C
[-4 … +257 °F]
G ⅜, form O with
collar
600 bar [8,700 psi]
SAE J514 7/16-20 UNF-2A,
O-ring BOSS
600 bar [8,700 psi]
9/16-18 UNF-2A,
O-ring BOSS
600 bar [8,700 psi]
3/4-16 UNF-2A,
O-ring BOSS
600 bar [8,700 psi]
7/16-20 UNF-2A,
sealing cone 74°
800 bar [11,600 psi] - -
ANSI/ASME
B1.20.1
⅛ NPT 400 bar [5,800 psi]
¼ NPT 1,000 bar [14,500 psi]
KS PT ¼ 1,000 bar [14,500 psi]
PT ⅜ 1,000 bar [14,500 psi]
ISO 7 R ¼ 1,000 bar [14,500 psi]
R ⅜ 1,000 bar [14,500 psi]
EN 837 G ⅛ B 400 bar [5,800 psi] Copper
-40 ... +125 °C
[-40 ... +257 °F]
Stainless steel
-40 ... +125 °C
[-40 ... +257 °F]
G ¼ B 1,000 bar [14,500 psi]
G ⅜ B 1,000 bar [14,500 psi]
Details must be tested separately in the respective application.The specified values for the max. nominal
pressure serve only as a coarse 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.
9. Specifications

19WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
Electrical connections
Description Ingress
protection 1)
Permissible ambient
temperature
Circular connector M12 x 1, code A, 4-pin IP67 -40 ... +125 °C
[-40 ... +257 °F]
Deutsch connector DT04-3P, 3-pin
Deutsch connector DT04-2P, 2-pin
Deutsch connector DT04-4P, 4-pin
Delphi connector Metri-Pack series 150, 3-pin
Cable outlet, IP6K9K, 2- or 3-wire IP6K9K -40 ... +110 °C
[-40 ... +230 °F]
With cULus approval:
-40 ... +85 °C
[-40 ... +185 °F]
AMP Superseal connector 1.5 series, 3-pin IP67 -40 ... +125 °C
[-40 ... +257 °F]
AMP Seal 16 connector, cone, code A, 3-pin
AMP Micro Quadlok System connector, code A,
3-pin
AMP Econoseal J Mark II series connector,
3-pin
VW connector, code I, 4-pin, 2 rows
1) The stated ingress protection only applies when plugged in using mating connectors that have the appropriate
ingress protection.
For special models MH-40000 or special version MH-4, 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 81.63 and the order documentation.
9. Specifications

20 WIKA operating instructions pressure sensor, model MH-4
14170805.01 06/2020 EN/DE/FR/ES
EN
9. Specifications
Dimensions in mm [in]
Deutsch connector DT04-2P, 2-pin
Deutsch connector DT04-3P, 3-pin Deutsch connector DT04-4P, 4-pin
Delphi connector Metri-Pack series 150, 3-pin
AMP Superseal connector 1.5 series, 3-pin
Circular connector M12 x 1, code A, 4-pin