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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
MX-400 pressure sensor
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 ranges100 / 250 / 600 bar
Output signal4–20 mA, 2-wire
Supply voltage8–30 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 connectionG¼" male, 17-4 PH
Enclosure ratingIP67
Absolute maximum ratings
Overpressure limit2× full scale
Burst pressure4× full scale
Supply voltage (max)36 VDC
Reverse polarityProtected
Storage temperature−40 to +100 °C
Performance & dimensions
Accuracy vs temperature
Accuracy vs temperature
0.050.240125Total error (% FS)Temperature (°C)
Key dimensions
A: Overall height96 mm
B: Body diameter27 mm
C: Hex width across flats24 mm
D: Process threadG¼" male
E: Electrical connectorM12 × 1, 4-pin
Electrical & mechanical characteristics
ParameterMinTypMaxUnit
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 voltage82430VDC
Output current4—20mA
Response time (10–90%)—12ms
Vibration (IEC 60068-2-6)——20g
Wiring & construction
M12 connector pin-out
PinFunctionWire colour
1+ SupplyBrown
2Not connectedWhite
3− Supply / signalBlue
4Shield / earthBlack
Materials & interface
ParameterValue
Materials
Diaphragm / wetted parts17-4 PH stainless steel
Housing316L stainless steel
Process sealFKM (Viton), fully welded
Interface
Process connectionG¼" male (DIN 3852-E)
Ordering information
MX-400-250B
MX-400250B
MX-400Series
250Range (bar)
B4–20 mA output
Order codePressure rangeOutputAccuracyProcess connection
MX-400-100B0–100 bar4–20 mA±0.25% FSG¼" · M12
MX-400-250B0–250 bar4–20 mA±0.25% FSG¼" · M12
MX-400-400B0–400 bar4–20 mA±0.25% FSG¼" · M12
MX-400-600B0–600 bar4–20 mA±0.25% FSG¼" · M12
MX-400-250V0–250 bar0–10 VDC±0.25% FSG¼" · 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
Product specifications and information are subject to change without notice, and State & Lake assumes no liability for errors, omissions, or the suitability of products for any specific application.
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