FSG PW620-19D Precision Wirewound Potentiometer

Overview

The FSG PW620-19D is a high-precision wirewound rotary potentiometer from FSG PW620 series, designed for angular position measurement and feedback signal output in industrial and marine control systems. The FSG PW620-19D converts shaft rotation angle into proportional resistance signal, providing stable analog feedback for valve position, actuator stroke and rotary axis detection. It adopts synchro size 20 aluminum housing and anti-vibration structure, suitable for harsh workshop, shipboard and offshore automation environments. The FSG PW620-19D is widely stocked as spare position feedback component for DCS, hydraulic actuator and marine machinery control loops.

Features

The FSG PW620-19D supports up to 345° active rotation angle with low torque and low wear construction. It carries excellent linearity and stable resistance output over long service life, and supports custom resistance specification and tolerance according to suffix code. The FSG PW620-19D uses synchro flange mounting and standard solder terminals or faston connectors for signal wiring. It integrates dust protection structure and can be upgraded to IP65 sealed version for splash and dust exposure. The FSG PW620-19D has no built-in electronic circuit, and directly outputs resistance signal to matched transmitter or PLC analog input module.

Specs

Device Type: Wirewound precision rotary potentiometer Model: FSG PW620-19D Series: PW620 Active Angle: 345° Housing: Anodized aluminum, synchro size 20 Shaft Diameter: 6 mm Mounting: Synchro flange clamp fixing Torque: 0.05 Ncm Resolution: High wirewound resolution Protection Grade: IP30 standard (IP65 optional) Operating Temperature: -30°C to +80°C Application: Marine actuator feedback, hydraulic valve position, crane angle detection, industrial rotary position monitoring

Principle

The FSG PW620-19D rotates the wiper along the wirewound resistance element when the input shaft turns. The change of resistance value corresponds linearly to the rotation angle. The matched measuring circuit converts this resistance signal into standard 4-20mA or voltage signal for upper control system reading. The FSG PW620-19D continuously outputs position feedback without external power supply. When wear or open circuit occurs, the control system will receive abnormal position signal and trigger position fault alarm.

Applications

The FSG PW620-19D is used for angle and stroke feedback of marine hydraulic actuators, damper drives and valve positioners. It serves rotary position detection for cranes, winches and offshore mechanical equipment. The FSG PW620-19D applies to spare stock and emergency replacement of damaged FSG position potentiometers. It also supports retrofitting position feedback loops on old marine and industrial automation assemblies.