MSP-400KPA-A
High-pressure MEMS sensor for automotive fuel systems with 0-400kPa range, ±1% accuracy, and AEC-Q100 qualification.
Product Overview
Description
The MSP-400KPA-A is designed for automotive fuel pressure monitoring applications including direct injection systems and fuel pump control. It provides accurate pressure measurement across the 0-400kPa range.
Featuring automotive-grade reliability with AEC-Q100 qualification, this sensor operates reliably from -40°C to +125°C. The analog output interface simplifies integration with engine control units.
The robust stainless steel port and sealed construction ensure compatibility with automotive fuels while maintaining long-term reliability in under-hood environments.
Product Series
MSP
Primary Application
Gasoline direct injection systems
Key Features
- 400kPa pressure range for fuel system applications
- AEC-Q100 qualified for automotive under-hood use
- Stainless steel M6 threaded port for fuel line connection
- Excellent media compatibility with automotive fuels
- Fast response time for real-time fuel control
- Temperature compensated for automotive temperature range
Specifications
| Pressure Range | 0-400kPa (Absolute) |
|---|---|
| Accuracy | ±1% FS |
| Output Type | Analog 0.5-4.5V |
| Operating Temperature | -40°C to +125°C |
| Supply Voltage | 5V ±0.25V |
| Response Time | <1ms |
| Package | SOP-8 with M6 Thread |
| Qualification | AEC-Q100 Grade 0 |
Applications
Gasoline direct injection systems
Electronic system design
Fuel pump pressure monitoring
Electronic system design
Manifold absolute pressure (MAP) sensing
Electronic system design
Evaporative emission control
Industrial automation and control
Diesel fuel systems
Electronic system design
FAE Expert Insights
"Having supported numerous fuel injection system designs, I find the MSP-400KPA-A to be an excellent choice for modern GDI (Gasoline Direct Injection) applications. The 400kPa range perfectly covers the pressure requirements of current direct injection systems operating at 200-350bar rail pressures when used with appropriate mechanical coupling. The sensor's fast response enables precise fuel control for improved engine efficiency and emissions. I particularly recommend this sensor for its robust stainless steel port construction which provides excellent fuel compatibility. For installation, ensure proper torque on the M6 thread (8-10 Nm recommended) and use compatible thread sealant. The analog output provides clean signals suitable for modern ECU ADC inputs. Overall, this sensor offers OEM-grade performance at a competitive price point."
Ideal for GDI applications with robust fuel-compatible construction
— David Wang, BeiLuo
Frequently Asked Questions
What thread sealant is recommended for the M6 port?
For the MSP-400KPA-A M6 threaded port, use fuel-compatible thread sealant rated for automotive fuel systems. Recommended options include: 1) PTFE tape (2-3 wraps) - ensure it's fuel-resistant grade; 2) Anaerobic thread sealant designed for fuel systems; 3) Pre-applied thread sealant on fittings. Avoid standard plumbing thread sealants that may degrade in fuel. Apply sealant carefully to prevent contamination of the sensor's pressure port. Torque to 8-10 Nm using a calibrated torque wrench to ensure proper sealing without damage.
Use only fuel-compatible sealants and follow proper torque specifications. Contact our FAE for specific sealant recommendations.
Can the MSP-400KPA-A handle gasoline with ethanol blends?
Yes, the MSP-400KPA-A is compatible with standard gasoline including E10 (10% ethanol) and E85 (85% ethanol) blends. The stainless steel port and fuel-compatible internal materials are specifically selected for automotive fuel applications. However, for E85 applications, verify compatibility with the specific fuel formulation as additives may vary. The sensor has been tested with standard automotive fuels per SAE and automotive OEM specifications. For alternative fuels or special formulations, contact our application engineering team for compatibility assessment.
Standard gasoline and common ethanol blends are fully compatible. Contact our FAE for alternative fuel compatibility questions.
What is the recommended mounting orientation for the MSP-400KPA-A?
The MSP-400KPA-A can be mounted in any orientation, but consider these guidelines for optimal performance: 1) Vertical mounting with port facing down helps prevent debris accumulation; 2) Avoid mounting directly above heat sources; 3) Ensure the electrical connector is protected from direct spray or immersion; 4) Allow adequate clearance for the electrical connection; 5) Consider vibration isolation if mounted on high-vibration engine components. The sensor's MEMS element is not sensitive to orientation, but the installation should protect the electrical interface and allow proper sealing of the pressure connection.
Choose mounting orientation based on space constraints and protection requirements. The sensor performs equally well in any orientation.
How does the sensor handle pressure spikes in fuel systems?
The MSP-400KPA-A is designed to withstand typical pressure transients in fuel injection systems. The sensor has an overpressure rating of 2x full scale (800kPa) without damage and 1.5x (600kPa) with maintained accuracy. For GDI systems with rapid pressure fluctuations, the <1ms response time accurately tracks pressure changes. The MEMS element is inherently robust against pressure spikes. For extreme pressure pulsation applications, consider adding a small accumulator or damper in the pressure line to protect the sensor and improve measurement stability.
The sensor handles normal fuel system transients. For extreme applications, consider pressure damping in the system design.
What diagnostic features are available with the analog output?
The analog output version provides basic diagnostic capability through output voltage levels: 1) Normal operation: 0.5-4.5V proportional to pressure; 2) Open circuit fault: 0V or 5V (depending on pull configuration); 3) Short circuit detection: Can be implemented in software by monitoring for out-of-range voltages. For enhanced diagnostics including temperature data and fault codes, consider the digital I2C/SPI output versions (MSP-400KPA-D). The analog version is suitable for applications where simple pressure measurement is the primary requirement and cost is a key consideration.
Choose analog output for simple, cost-sensitive applications. Select digital output versions if diagnostics and temperature data are required.