Variohm EuroSensor has released the innovative SP3 String Pot sensing device manufactured by Celesco. The device has a robust wire extension configuration featuring an accurate plastic-hybrid potentiometer and a winding drum in a cost-effective and sensitive enclosure, custom-made to provide 0–10 VDC or 4–20 mA output by coupling the proper signaling cables during its installation process.
The compact device is capable of performing accurate linear position calibration in varying selectable ranges including 120mm, 315mm, 635mm and 1270mm. The device cab be incorporated within a 25mm wide x 50mm deep x 90mm high envelope, and its long-span water repellent polycarbonate shielding involves four point fixing and an additional bracket for installation in almost all the systems.
The wire extension sensing unit eliminates the necessity of a wiring arrangement which complicates the calibration processes where space is restricted to accommodate other conventional measurement units or in areas where the mobile elements are hidden or submerged by other devices.
The SP3 sensor exhibits 15g acceleration rating in retraction and supplies a durable operation with 2.5 million mechanisms in 120 mm travel version, that is, 250K cycles in 1270 mm travel unit. The entire precision is in the order of 0.25% to 1.0% FS according to the length of stroke, shows more than 0.05% FS recurrency with infinite calibration resolution frequency.
The voltage provision ranges from 8 to 40VDC for the power output series as well as 12 to 32VDC for the voltage series. The electrical interface is supplied using a 1 m multi-conductor wire. The SP3 facilitates secure operations and supplies ample levels of accuracy for many purposes for the OEM devices and light industrial machineries, explains the company.