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Passive Magnetic Sensors
Control and protection circuits have relied on variable reluctance
technology for years. With few components and no moving parts,
the passive magnetic speed sensors can provide a signal from the
inside of an aircraft engine at temperatures approaching 425°C or
from the hub of an automobile wheel at high shock and vibration.
The advantages of these sensors are:
• High reliability
• Simple installation
• Long life due to no moving parts or contacts
• Self powered operation
• Wide variety of shapes and sizes
• Easy alignment
• Can be designed for almost any environment
Due to their flexibility, you will find AI-Tek variable reluctance
sensors in everything from low-cost consumer products to highlyaccurate
automotive engine ignition systems to flight-worthy aircraft
engine controls.
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Active, Zero Velocity or Hall Effect Sensors
Hall Effect Sensors
These transducers can sense each change in target movement,
regardless of speed, from near zero to 15kHz frequency range,
generating a steady pulse train of frequency proportional to target
speed. Key features include:
- Reverse voltage protection
- Higher Temperature range of -40°C to +125°C
- Wide range of supply voltage in single design of 4.5 – 24 VDC
- Two output options of Supply Tracking or TTL Compatible
- Rugged design meeting IEC 77 Standards (European Railroad
Applications
The newest “RH” series sensors no longer require special alignment,
have improved duty cycle and fine pitch performance and increased air
gaps.
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