WIKA · Pressure measurement · Family MH-3
OEM pressure sensor
For mobile hydrogen applications
Range
0…600 bar
Output
4 ... 20 mA · 0 ... 10 V DC
Accuracy
≤ ±1 % of span
Protection
IP67
CEEACRoHSEC79/2009
Price
On request
Depends on configuration
Special features
- EC 79/2009 approval
- E1 approval guarantees compliance with EMC requirements in a vehicle
- Hydrogen compatibility through the use of suitable materials and a dry, welded measuring cell
- Developed for the extreme operating conditions in mobile applications
Identification
| Model | MH-3 |
| Subcategory | OEM pressure sensor |
Measuring range
| Pressure ranges | 0…20 bar · 0…25 bar · 0…40 bar · 0…60 bar · 0…100 bar · 0…160 bar · 0…250 bar · 0…400 bar · 0…600 bar · 0…300 psi · 0…500 psi · 0…1000 psi · 0…1500 psi · 0…2000 psi · 0…3000 psi · 0…5000 psi · 0…8000 psi |
Accuracy
| Accuracy class | ≤ ±1 % of span |
| Accuracy standard | IEC 61298-2 |
Process conditions
| Process connection | M14 x 1.57/16-20 UNF-2AG ¼ BG ¼ A¼ NPTG 1/4 BG 1/4 A1/4 NPT |
| Process temperature | −40…+125 °C |
Electrical characteristics
| Output signal | 4 ... 20 mA · 0 ... 10 V DC · 1 ... 5 V DC · 1 ... 6 V DC · 0.5 ... 4.5 V · 0...10 V · 1...5 V · 1...6 V · 0.5...4.5 V ratiometric |
| Power supply | DC 10 ... 36 V |
| Electrical connection | Deutsch DT04-3P, 3-pin |
Materials
| Case material | PBT (glass-fibre reinforced plastic) |
| Wetted parts material | Stainless steel |
| Sealing material | Copper, Stainless steel, NBR, FPM/FKM |
Operating environment
| Ambient temperature | −40…+100 °C |
| IP rating | IP67 |
Certifications and approvals
| Certifications | CEEACRoHSEC79/2009 |
Additional details
| Datasheet languages | EN |
Tables from datasheet
Accuracy specifications
| Non-linearity per IEC 61298-2 | ||
|---|---|---|
| Measuring ranges ≥ 40 bar [≥ 500 psi] | ≤ ±0.25 %of span | |
| Measuring ranges < 40 bar [< 500 psi] | ≤ ±0.4 %of span | |
| Accuracy | →See'Max.measured error per IEC 61298-2' | |
| Max. measured error per IEC 61298-2 | ||
| Measuring ranges ≥ 40 bar [≥ 500 psi] | ≤ ±1 %of span | |
| Measuring ranges < 40 bar [< 500 psi] | ≤ ±2 %of span | |
| Medium temperature coefficient at -40 ... +100 °C [-40 ... +212 °F] | ||
| Zero point | Measuring ranges ≥ 40 bar [≥ 500 psi] | ≤ ±0.15 %of span/10 K |
| Measuring ranges < 40 bar [< 500 psi] | On request | |
| Span | ≤ ±0.08 %of span/10 K | |
| Long-term stability per DIN 16086 | ||
| Model MH-3 | Measuring ranges ≥ 40 bar [≥ 500 psi] | ≤ ±0.2 %of span/year |
| Measuring ranges < 40 bar [< 500 psi] | ≤ ±0.3 %of span/year | |
| Model MH-3-HY 1) | Medium temperature range -40 ...+30 °C [-40 ...+86 °F] | ≤ ±1 %of span/year (typical) |
| ≤ ±3 %of span/year (maximum) | ||
| Reference conditions | Per IEC 61298-1 |
| bar | Model MH-3 | Model MH- 3-HY |
|---|---|---|
| 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 1) |
| psi | Model MH-3 | Model MH- 3-HY |
|---|---|---|
| 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 1) |
Further details on: Measuring range
| Units | ■ bar ■ psi ■ MPa (1 bar = 0.1 MPa) |
|---|---|
| Max. working pressure | Corresponds to the upper measuring range value/measuring range full scale value |
| Overpressure limit | 2 times (deviating for individual psi measuring ranges of model MH-3-HY) |
| The overpressure limit is based on the measuring range. Depending on the selected pro- cess connection and the seal, restrictions in overpressure limit can result. | |
| Vacuum resistance | Yes |
View all (19)
Process connection
| Standard | Thread size | Max. measuring range 1) | Overpres- sure limit | Model MH-3 | Model MH-3-HY | Seal (model MH-3) |
|---|---|---|---|---|---|---|
| EN 837 | G¼B | 600 bar [8,000 psi] | 1,480 bar [21,466 psi] | x | x | ■ Copper ■ Stainless steel |
| DIN EN ISO 1179-2 (formerly DIN 3852-E) | G¼A | 600 bar [8,000 psi] | 858 bar [12,444 psi] | x | - | ■ NBR ■ FPM/FKM |
| DIN EN ISO 9974-2 (formerly DIN 3852-E) | M14 x 1.5 | 600 bar [8,000 psi] | 858 bar [12,444 psi] | x | - | |
| ISO 6149-2 | M14 x 1.5 | 600 bar [8,000 psi] | 858 bar [12,444 psi] | x | - | - |
| SAE J514 Fig.34B | 7/16-20 UNF-2A | 600 bar [8,000 psi] | 1,144 bar [16,592 psi] | x | x | - |
| ANSI/ASME B1.20.1 | ¼NPT | 600 bar [8,000 psi] | 1,480 bar [21,466 psi] | x | x | - |
Further details on: Process connection
| Max. measuring range | →See table 'Process connection' above |
|---|---|
| Overpressure limit | →See table 'Process connection' above |
| Pressure port diameter | →See'CDS system' |
| Possible restrictions | Depending on the choice of seal at the process connection, there may be restrictions in the permissible temperature range |
| Copper | -40 ...+125 °C [-40 ...+257 °F] |
| Stainless steel | -40 ...+125 °C [-40 ...+257 °F] |
| NBR | -30 …100 °C [-22 …+212 °F] |
| FPM/FKM | -40 ...+125 °C [-40 ... 257 °F] |
Output signal
| Signal type | ||
|---|---|---|
| Model MH-3 | Current (2-wire) | 4 ...20mA |
| Voltage (3-wire) | ■ DC 0 ...10V ■ DC 1 ...5V ■ DC 1 ...6V | |
| Ratiometric (3-wire) | DC 0.5 ...4.5V | |
| Other output signals on request. | ||
| Model MH-3-HY | Current (2-wire) | 4 ...20mA |
| Ratiometric (3-wire) | DC 0.5 ...4.5V | |
| Load | ||
| Output signal 4 ...20mA | ≤ (auxiliary power 10 V)/0.02 A | |
| Output signal DC 0 ...10V | > 5 kΩ | |
| Output signal DC 1 ...5V | > 2.5 kΩ | |
| Output signal DC 1 ...6V | > 5 kΩ | |
| Output signal DC 0.5 ... 4.5 V, ratiometric | > 4.5 kΩ | |
| Signal clamping | Yes | |
| Diagnostic function | Yes | |
| Voltage supply | ||
| Auxiliary power | Output signal 4 ...20mA | DC 10 ...36V |
| Output signal DC 0 ...10V | DC 14 ...36V | |
| Output signal DC 1 ...5V | DC 8 ...36V | |
| Output signal DC 1 ...6V | DC 9 ...36V | |
| Output signal DC 0.5 ... 4.5 V, ratiometric | DC 4.5 ...5.5V | |
| Current supply | Output signal 4 ...20mA | < 30mA |
| Output signal DC 0 ...10V | < 10mA | |
| Output signal DC 1 ...5V | < 10mA | |
| Output signal DC 1 ...6V | < 10mA | |
| Output signal DC 0.5 ... 4.5 V, ratiometric | < 10mA | |
| Dynamic behaviour | ||
| Settling time per IEC 61298-2 | ≤ 2 ms |
Electrical connection
| Connection type | IP code 1) | Wire cross-section | Cable diameter | Cable length |
|---|---|---|---|---|
| Model MH-3 | ||||
| Deutsch DT04-3P, 3-pin | IP67 | - | - | - |
| Delphi connector Metri-Pack series 150, 3-pin | IP67 | - | - | - |
| Circular connector M12 x 1, 4-pin | IP67 | - | - | - |
| AMP Superseal connector 1.5 series, 3-pin | IP67 | - | - | - |
| Cable outlet, 2-pin | IP69K | 0.75mm 2 (with end splices) | 6.6 mm[2,6 in] | ■ 0.5 m[1,46 ft] ■ 2 m[6,56] ■ 5 m[16,4] |
| Cable outlet, 3-pin | IP69K | 0.75mm 2 (with end splices) | 6.6 mm[2,6 in] | ■ 0.5 m[1,46 ft] ■ 2 m[6,56] ■ 5 m[16,4] |
| Model MH-3-HY | ||||
| Delphi connector Metri-Pack series 150, 3-pin | IP67 | - | - | - |
| AMP Superseal connector 1.5 series, 3-pin | IP67 | - | - | - |
Further details on: Electrical connection
| Connection type | →See table 'Electrical connection' above |
|---|---|
| Wire cross-section | →See table 'Electrical connection' above |
| Cable diameter | →See table 'Electrical connection' above |
| Pin assignment | →See pin assignment pageSeite 6 |
| Ingress protection (IP code) per IEC 60529 | →See table 'Electrical connection' above |
| Short-circuit resistance | S + vs. U- |
| Reverse polarity protection | U + vs. U- (no reverse polarity protection with ratiometric output signal) |
| Insulation voltage | DC 500V |
Circular connector M12 x 1 (4-pin)
| 2-wire | 3-wire | ||
|---|---|---|---|
| U+ | 1 | 1 | |
| U- | 3 | 3 | |
| S+ | - | 4 |
Metri-Pack series 150 (3-pin)
| 2-wire | 3-wire | ||
|---|---|---|---|
| U+ | B | B | |
| U- | A | A | |
| S+ | - | C |
Cable outlet
| 2-wire | 3-wire | ||
|---|---|---|---|
| U+ | Brown | Brown | |
| U- | Green | Green | |
| S+ | - | White |
Material
| Material (wetted) | |
|---|---|
| Model MH-3 | Stainless steel |
| Model MH-3-HY | Stainless steel, 2.4711 |
| Material (in contact with the environment) | Highly resistant glass-fibre reinforced plastic (PBT) |
Operating conditions
| Permissible temperature ranges | Depending on the selected model the following values result: | |
|---|---|---|
| Model MH-3 | Model MH-3-HY | |
| Medium temperature limit | -40 …+125 °C [-40 …+257 °F] | -40 ...+ 85 °C [-40 ...+185 °F] |
| Ambient temperature limit | -40 ...+100 °C [-40 ...+212 °F] | -40 ...+ 85 °C [-40 ...+185 °F] |
| Storage temperature limit | -40 ...+100 °C [-40 ...+212 °F] | -40 ...+ 85 °C [-40 ...+185 °F] |
Further details on: Operating conditions
| Vibration resistance per IEC 60068-2-6 | 20 g |
|---|---|
| Shock resistance per IEC 60068-2-27 | 500 g |
| AMP Superseal 1.5 (3-pin) | 2-wire | 3-wire | |
|---|---|---|---|
| U + | 3 | 3 | |
| 1 2 3 | U- | 1 | 1 |
| S + | - | 2 |
Deutsch DT04-3P (3-pin)
| 2-wire | 3-wire | ||
|---|---|---|---|
| U+ | A | A | |
| U- | B | B | |
| S+ | - | C |
| Logo | Description | Country | Model MH-3 | Model MH- 3-HY |
|---|---|---|---|---|
| EU declaration of conformity EMCdirective, EN 61326 emission (group 1, class B) and immunity (industrial application) | European Union | x | x | |
| EAC EMCdirective | Eurasian Economic Community | x | - | |
| - | MTSCHS Permission for commissioning | Kazakhstan | x | - |
| MazInMetr Metrology, measurement technology | Kazakhstan | x | - | |
| - | EC79/2009 Type approval for hydrogen-powered vehicles | European Union | - | x |
| Type approval Kraftfahrtbundesamt UN ECE regulation R10 -EMC | International | - | x |
| Logo | Description |
|---|---|
| - | China RoHS directive |
| MTTF | > 100 years |
Industry
Machinery
Measurement of the tank pressure (350 bar) · Measurement of the system pressure after pressure reduction (usually 20 bar)
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