sensor types

SENSOR	ADVANTAGES	DISADVANTAGES	APPLICATIONS
Limit Switch	High Current Capability • Low Cost • Familiar "Low- Tech" Sensing	Requires Physical Contact with Target • Very Slow Response • Contact Bounce	• Interlocking • Basic End-of Travel Sensing
Photoelectric	Senses all Kinds of Materials • Long Life • Longest Sensing Range "Very Fast Response Time	Lens Subject to Contamination Sensing Range Affected by Color and Reflectivity of Target	Packaging  Material Handling Parts Detection
Inductive	• Resistant to Harsh Environments -Very Predictable • Long Life • Easy to Install	• Distance Limitations	• Industrial and Machines • Machine Tool • Senses Metal- Only Targets
Capacitive	Detects Through some containers Can detect non-metalic targets	Very sensitive to Extreme environmental Changes	Level Sensing
Ultrasonic	• Senses all Materials	• Resolution • Repeatability -Sensitive to Temperature Changes	• Anti-Collision • Doors • Web Brake • Level Control