Variohm EuroSensor’s new SP3 string pot sensor from Celesco features a rugged cable extension design with a plastic-hybrid precision potentiometer and winding drum in a package that can be user configured for a choice of 4-20mA or 0-10V DC output by connecting the appropriate signal wires on installation.
With precision absolute linear position measurement in a choice of four ranges covering 120mm, 315mm, 635mm and 1,270mm, the unit can be mounted within an envelope of just 25mm wide x 50mm deep x 90mm high and its durable water resistant polycarbonate housing has four-point fixing and a bracket that facilitates universal mounting. The cable extension sensor requires no critical cable alignment which suits difficult to measure applications.
The SP3 has an acceleration rating of up to 15g in retraction and a rated life of over 2.5 million cycles for the 120mm travel unit (250K cycles for the 1,270mm travel version). Overall accuracy is between 0.25 per cent to 1.0 per cent FS depending upon stroke length, repeatability better than 0.05 per cent FS, and the measuring resolution is essentially infinite.