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Product Data Sheet
Meridian MX-400 Panel-Mount Pressure Sensor
Panel-mount pressure sensor · 4–20 mA · IP67 · −40 to +125 °C
±0.25%
Total error band
IP67
Sealed enclosure
−40…125 °C
Compensated range
Overview
The MX-400 is a rugged two-wire pressure transmitter for hydraulic and pneumatic systems. A fully welded 17-4 PH stainless diaphragm senses process pressure with no internal fill fluid, giving long-term stability in high-vibration machinery, while the 4–20 mA current loop drops directly into existing PLC and SCADA installations with no added signal conditioning.
Key features
- 0.25% total error band: non-linearity, hysteresis and repeatability combined
- Fully welded 17-4 PH stainless diaphragm, media-isolated with no fill fluid
- Compensated −40 to +125 °C with no external temperature compensation
- Drop-in two-wire 4–20 mA loop for existing PLC / SCADA
- IP67-sealed M12 connector for washdown and high-vibration duty
- 2× overpressure and ±0.20% FS/yr long-term stability
Typical applications
- Hydraulic power units and presses
- Pneumatic and compressed-air systems
- Mobile and off-highway equipment
- Test benches and calibration rigs
- Pump and compressor monitoring
- Injection moulding and machine tools
Specifications & ratings
Key specifications
| Pressure ranges | 100 / 250 / 600 bar |
| Output signal | 4–20 mA, 2-wire |
| Supply voltage | 8–30 VDC (24 V nom.) |
| Operating temperature | −40 to +125 °C |
| Compensated temperature | −20 to +85 °C |
| Max loop resistance | (Vs − 8 V) / 20 mA |
| Process connection | G¼" male, 17-4 PH |
| Enclosure rating | IP67 |
Absolute maximum ratings
| Overpressure limit | 2× full scale |
| Burst pressure | 4× full scale |
| Supply voltage (max) | 36 VDC |
| Reverse polarity | Protected |
| Storage temperature | −40 to +100 °C |
Performance & dimensions
Accuracy vs temperature
Accuracy vs temperature
Key dimensions
| A: Overall height | 96 mm |
| B: Body diameter | 27 mm |
| C: Hex width across flats | 24 mm |
| D: Process thread | G¼" male |
| E: Electrical connector | M12 × 1, 4-pin |
Electrical & mechanical characteristics
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Accuracy & stability | ||||
| Total error band | — | ±0.25 | ±0.5 | % FS |
| Non-linearity (BFSL) | — | ±0.10 | ±0.15 | % FS |
| Long-term stability | — | ±0.20 | — | % FS/yr |
| Electrical & environmental | ||||
| Supply voltage | 8 | 24 | 30 | VDC |
| Output current | 4 | — | 20 | mA |
| Response time (10–90%) | — | 1 | 2 | ms |
| Vibration (IEC 60068-2-6) | — | — | 20 | g |
Wiring & construction
M12 connector pin-out
| Pin | Function | Wire colour |
|---|---|---|
| 1 | + Supply | Brown |
| 2 | Not connected | White |
| 3 | − Supply / signal | Blue |
| 4 | Shield / earth | Black |
Materials & interface
| Parameter | Value |
|---|---|
| Materials | |
| Diaphragm / wetted parts | 17-4 PH stainless steel |
| Housing | 316L stainless steel |
| Process seal | FKM (Viton), fully welded |
| Interface | |
| Process connection | G¼" male (DIN 3852-E) |
Ordering information
MX-400-250B
MX-400250B
| MX-400 | Series |
| 250 | Range (bar) |
| B | 4–20 mA output |
| Order code | Pressure range | Output | Accuracy | Process connection |
|---|---|---|---|---|
| MX-400-100B | 0–100 bar | 4–20 mA | ±0.25% FS | G¼" · M12 |
| MX-400-250B | 0–250 bar | 4–20 mA | ±0.25% FS | G¼" · M12 |
| MX-400-400B | 0–400 bar | 4–20 mA | ±0.25% FS | G¼" · M12 |
| MX-400-600B | 0–600 bar | 4–20 mA | ±0.25% FS | G¼" · M12 |
| MX-400-250V | 0–250 bar | 0–10 VDC | ±0.25% FS | G¼" · M12 |
Certifications
CECE marking
UKCAUKCA
RoHSRoHS 3
IP67IP67 sealed
IP67
SolidsDust-tight
WaterImmersion to 1 m
Related documents
- EU Declaration of Conformity
- DoC-MX400-03
- RoHS 3 Declaration
- ROHS-MX400-03
- Installation guide
- DOC-MX400-INST Rev C
- 3D model / STEP
- meridian.example/mx-400