LEM Industrial Sensor Application Guide
This technical reference document provides detailed information about lem product specifications, characteristics, and performance parameters. Use this information to support your design and analysis activities.
Electrical characteristics are specified over the operating temperature range unless otherwise noted. Parameters are guaranteed by design, testing, or statistical analysis. Typical values is the most likely parametric norm at 25°C.
Thermal characteristics require careful attention during system design. The junction-to-ambient thermal resistance depends on the mounting configuration, PCB copper area, and airflow conditions. Use thermal simulation tools to predict operating temperatures under actual conditions.
Reliability data is based on accelerated life testing and field failure analysis. Mean time between failures (MTBF) calculations follow industry-standard methodologies. Contact BeiLuo for detailed reliability reports and qualification data.
💡 FAE Insights
⚠️ Common Pitfalls
- ✗ Underestimating EMC requirements for industrial environments
- ✗ Poor cable routing near noise sources
- ✗ Inadequate grounding leading to ground loops
- ✗ Insufficient environmental protection for the application
- ✗ Not considering maintenance access in mounting design
📋 Customer Cases
Steel Manufacturing Plant
Heavy Industry
Challenge
Customer needed reliable current measurement in a steel rolling mill with severe electromagnetic interference from arc furnaces, high vibration from rolling equipment, and high ambient temperatures.
Solution
Recommended HAIS series sensors with enhanced EMC immunity, DIN rail mounting for vibration resistance, and proper shielding and grounding practices.
Customer Feedback
"The sensors have operated reliably for over 3 years in this harsh environment. The proper EMC design eliminated the intermittent measurement issues we experienced with previous sensors. The DIN rail mounting made maintenance much easier."
Frequently Asked Questions
1. What EMC immunity levels do LEM industrial sensors provide?
LEM industrial sensors provide comprehensive EMC immunity including: ESD protection to 8kV contact/15kV air discharge per IEC 61000-4-2, radiated RF immunity to 10V/m per IEC 61000-4-3, electrical fast transient immunity to 2kV per IEC 61000-4-4, surge immunity to 2kV line-to-line/4kV line-to-ground per IEC 61000-4-5, conducted RF immunity to 10V per IEC 61000-4-6, and power frequency magnetic field immunity to 100A/m per IEC 61000-4-8.
2. How should I mount sensors in high-vibration environments?
For high-vibration environments: Use rigid mounting with proper torque specifications avoiding cantilevered mounting. Secure cables with strain relief to prevent fatigue at connections. Select sensors with specified vibration ratings (typically 5g or higher). Consider solid-state Hall effect sensors which have no moving parts. Use conformal coating for protection against vibration-induced fretting corrosion.