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Model MH-3 OEM Pressure Transmitter

Brand: WIKA Alexander Wiegand SE & Co. KG
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Durable and Robust Shock and vibration resistance, resistance to pressure spikes from the WIKA Cavitation Dampening system (CDS), and an ingress protection of up to IP 69K make the model MH-3 pressure transmitter especially qualified for the harsh operating conditions in mobile hydraulics. Even extreme temperature shocks do not affect its performance.

The case is made of a highly resistant fiberglass reinforced thermoplastic (PBT). This material is successfully used within the automotive industry.

A metallic shield inside the instrument provides excellent EMC characteristics in accordance with EN 61326, thus ensuring reliable operation, even under high exposures of up to 100 V/m.

The hermetically-welded thin-film measuring cell ensures long-term leak-tightness, without the need for additional sealing materials. Especially in applications with high dynamic load cycles, the thin-film measuring cell features high long-term stability and load-cycling resistance.

State-of-the-Art Manufacturing Our manufacturing concept is optimally designed for the production of OEM needs. Also customer-specific modifications of the instruments are possible.

Diagnostic Function As a measuring instrument of the latest generation, the MH-3 features a 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.
Features
  • For extreme operating conditions
  • Compact and robust design
  • Diagnostic function (option)
  • Signal clamping (option)
  • Customer-specific modifications possible
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Durable and Robust Shock and vibration resistance, resistance to pressure spikes from the WIKA Cavitation Dampening system (CDS), and an ingress protection of up to IP 69K make the model MH-3 pressure transmitter especially qualified for the harsh operating conditions in mobile hydraulics. Even extreme temperature shocks do not affect its performance.

The case is made of a highly resistant fiberglass reinforced thermoplastic (PBT). This material is successfully used within the automotive industry.

A metallic shield inside the instrument provides excellent EMC characteristics in accordance with EN 61326, thus ensuring reliable operation, even under high exposures of up to 100 V/m.

The hermetically-welded thin-film measuring cell ensures long-term leak-tightness, without the need for additional sealing materials. Especially in applications with high dynamic load cycles, the thin-film measuring cell features high long-term stability and load-cycling resistance.

State-of-the-Art Manufacturing Our manufacturing concept is optimally designed for the production of OEM needs. Also customer-specific modifications of the instruments are possible.

Diagnostic Function As a measuring instrument of the latest generation, the MH-3 features a 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.
Features
  • For extreme operating conditions
  • Compact and robust design
  • Diagnostic function (option)
  • Signal clamping (option)
  • Customer-specific modifications possible
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Specifications

Brand

Ambient Temperature Range

  • -40° to 100° C (-40° to 212° F)

Applications

  • Hydraulic Drive Controls
  • Load Moment Limitation
  • Load Monitoring

Approvals & Certifications

  • CE
  • EAC
  • EMC Directive 2004/108/EC, EN 61326 Emission (Group 1, Class B) & Immunity (Industrial Application)
  • GOST
  • MTSCHS
  • PED: 97/23/EC

BSP Connection

  • G 1/4” A Male DIN 3852-E / B Male EN 837

Burst Pressure

  • psi: 6,000 to 36,000 (kPa: 41,370 to 248,200, bar: 413.7 to 2,482)

Consumption

  • < 10 mA - Output Signal: 0-10 Vdc / 1-5 Vdc / 1-6 Vdc / 0.5-4.5 Vdc
  • < 30 mA - Output Signal: 4-20 mA

Electrical Connectors

  • AMP Superseal 1.5 (3-Pin)
  • Cable Outlet
  • Circular Connector M12 x 1 (4-Pin)
  • Deutsch DT04-3P (3-Pin)
  • Metri-Pack Series 150 (3-Pin)

Environmental Protection

  • IP67
  • IP69K

Materials of Construction

  • Highly Resistant Fiberglass Reinforced Plastic (PBT)

Metric Connection

  • M14 x 1.5 Male DIN 3852-E / ISO 6149-2

Non-Linearity

  • Maximum
  • Typical: ≤ ± 0.25 % of Span BFSL

NPT Connection

  • 1/4” NPT Male ANSI/ASME B1.20.1

Output

  • 0.5 - 4.5 Vdc (Ratiometric)
  • 0-10 Vdc (Voltage 3-Wire)
  • 1-5 Vdc (Voltage 3-Wire)
  • 1-6 Vdc (Voltage 3-Wire)
  • 4-20 mA (Current 2-Wire)

Overpressure & Static Pressure Limits

  • psi: 1,200 to 18,000 (kPa: 8,274 to 124,100, bar: 82.74 to 1,241)

Power Supply

  • 10-36 Vdc - Output Signal: 4-20 mA
  • 14-36 Vdc - Output Signal: 0-10 Vdc
  • 4.5-5.5 Vdc - Output Signal: 0.5-4.5 Vdc
  • 8-36 Vdc - Output Signal: 1-5 Vdc
  • 9-36 Vdc - Output Signal: 1-6 Vdc

Pressure Range

  • bar: 0 to 620
  • kPa: 0 to 62,000
  • psi: 0 to 9,000

Pressure Type

  • Gauge

Seat / Seal Material

  • FKM
  • FPM
  • FVMQ
  • NBR

Shock

  • 500 G (per IEC 60068-2-27, Mechanical)

Storage Temperature

  • -40° to 125° C (-40° to 212° F)

Temperature Range

  • -40° to 125° C (-40° to 257° F)

UNF/UNC Connection

  • 7/16”-20 UNF Male-2A SAE J514 Fig.34B

Vibration

  • 20 G (per IEC 60068-2-6, Under Resonance)

Wetted Materials

  • Stainless Steel
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Applications

  • Load monitoring
  • Load moment limitation
  • Hydraulic drive control
  • Pressure monitoring of hydrogen (model MH-3-HY)
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