3352E-1-502LF

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Thumbwheel Potentiometers provide a means to convert the angular or linear movement of a thumbwheel into a continuous proportional electric signal. They are ideal for applications where rotational or positional sensing of the mechanical input is desirable. From traditional contact type potentiometers such as the Agilent 33502E-1-502LF to advanced digital based LVDTs and 3D motion sensors, there are a variety of thumbwheel-based devices serving a host of different applications. The following sections will provide an overview of the application field and working principle of the 33502E-1-502LF.

Application Field

The 33502E-1-502LF is a contact-type precision thumbwheel potentiometer suitable for applications which require a reliable and accurate source of angular measurement. It is available in various ranges and is particularly well suited for industrial applications which require a long-life device. Suggested uses include positioning and closed loop control systems, angular measurement devices, and various other signal control systems. It is ideally suited for applications which require a low-cost, long-term, reliable solution, such as those in automotive, industrial, and instrumentation fields.

Working Principle

The 33502E-1-502LF works by using an integrated resistor network to generate an electrical signal proportional to the angular position of a rotating thumbwheel. The integrated resistor network consists of two fixed resistors, R3 and R4, and one or more variable resistors, R1 and R2. As the thumbwheel is rotated, the corresponding variable resistor, R1 or R2, is moved along the integrated resistor network, which in turn changes the overall resistance of the network. This variation in resistance allows the device to generate an analog voltage signal. The analog voltage signal is then sent to the signal conditioning circuitry, such as a voltage analyzer, where it can be further processed and recorded.

The 33502E-1-502LF is extremely reliable and accurate, and is capable of providing a resolution of up to 1.2 degrees per revolution. Additionally, the device is impervious to the environmental influences of temperature and humidity, ensuring trouble free operation. The device is also designed with sealed internal components and is capable of sustaining normal levels of shock and vibration.

In conclusion, the 33502E-1-502LF is a reliable and accurate thumbwheel potentiometer suitable for a variety of applications where accuracy and reliability are necessary. It is available in various ranges and is particularly well suited for industrial applications which require a long-life device. The integrated resistor network, along with the signal conditioning circuitry, enable the device to generate an analog voltage signal which is proportional to the angular position of the thumbwheel.

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