The F-4119-120 Spring Sensor is a limit sensor designed for simple and reliable operation and easy mounting. Functioning like a whisker valve, it is composed of a nylon deflection rod and a tightly wound coil of the spring separate and allow free air flow. In applications, the deflection of the nylon rod should not be allowed to exceed 45°. Greater than 45° deflection of the rod may cause permanent damage to the coil spring. The air connection should be made with 1/16” I.D. tubing, and a dropping restrictor or Sensor Venturi must be installed upstream of the spring sensor. The nylon rod may be trimmed as required. In the normal undeflected position, the sensor offers a high resistance to air flow. Thus, the Spring Sensor can be used for various functions such as sensing the end of a cylinder stroke or sensing the presence of a part or machine element.
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