请从以下类别的常见问题。  
 
1. 什么类型的传感器和开关使用 SoftNoze's 商品?
• 电感式接近传感器 / Inductive Proximity Sensors available in many shapes and sizes, but all use wire winding around a ferrite core which emits a RF field from the sensing face. When metal targets approach the RF field they are detected without actual contact. Commonly applied at a range of 1mm (0.039") to 60mm (2.36").

• 电容式接近传感器 / Capacitive Proximity Sensors many shapes and sizes, but all contain a metal plate in the sensing face. Targets often include liquids, granular materials, paper, glass and wood. The target and metal plate work together to create a capacitor and as a target moves closer, the capacitance changes until an output is generated. Effective at ranges from 1mm (0.039") to 50mm (1.96").

• 光电式接近传感器 / Photoelectric Proximity Sensors offered in a wide variety of sensing modes and physical configurations, but all use some form of light energy to detect targets. Target materials are quite extensive and selection depends on the target's reflective properties. Models are available with sensing ranges from 1mm (0.039") up to 20 meters (65 feet).

• 超声波接近传感器 / Ultrasonic Proximity Sensors uses high frequency sound waves to detect the presence of an object. Good target materials are solids, liquids and granular media due to their high reflectivity and unlike photoelectric sensor, target color and dusty environments do not effect them. Commonly applied in applications from 60mm (2.36") to 8.0 meters (26 feet).

• 机器视觉相机 & 智能传感器 / Machine Vision Cameras & Smart Sensors is the application of computer vision to industry and manufacturing. Whereas computer vision is mainly focused on machine-based image processing, machine vision most often requires also digital input/output devices and computer networks to control other manufacturing equipment such as robotic arms. Machine Vision is a sub-field of engineering that encompasses computer science, optics, mechanical engineering, and industrial automation. One of the most common applications of Machine Vision is the inspection of manufactured goods such as semiconductor chips, automobiles, food and pharmaceuticals. Commonly applied in applications from 60mm (2.36") to 3.0 meters (9 feet).

• 限位开关 / Limit Switches switches that operate just like an ON/OFF switch, but they are equipped with specialized rollers, levers, etc. When actuated the limit switch outputs a control signal(s). Unlike proximity sensors, limit switches must be physically contacted to operate.

• 安全开关 / Safety Switches Similar to limit switches, but safety switches have a two-part switch consisting of a 1) switch body and 2) a unique operator or "key". In order to generate an output signal(s) the unique key must engage with the switch body. Used in machinery to protect workers from unsafe access to machine areas.

• LVDT provides very accurate positional feedback as a plunger physically contacts and moves against a target or work piece for measuring and gauging purposes.

• 热电偶 / Thermocouples commonly a probe-shaped device containing two dissimilar metal wires, which are used to measure temperature.

• 压力传感器 & 开关 / Pressure Sensors & Switches these are attached to pipes and vessels to monitor this critical condition within a process or system.