Cable extension sensor

Celesco's new SG1 series cable extension transducer builds on the design characteristics of thel SP and SM series short-range 'stringpot' sensors by offering a longer 2m measurement range in a compact 75x75x50 mm polycarbonate housing with optional IP67 protection. The competitively priced SG1 will suit end users requiring fast off-the-shelf delivery, and OEMs needing larger quantities will benefit from its easily adapted design for customisation of mounting hardware, measurement range and electrical connection.

The SG1 provides absolute linear position measurement over a 2m full stroke range with a voltage divider output from a 10 kO plastic-hybrid potentiometer and a recommended 30 VDC supply. Aimed at demanding measurement applications from hydraulic cylinder positioning to structural testing and medical equipment position feedback, this sensor has an accuracy of 0.35% and repeatability to 0.05% F.S. The rugged polycarbonate body houses a precision high-cycle plastic hybrid potentiometer in a spring-loaded cable drum arrangement with a stainless steel measuring cable in a "free-release" tolerant design that helps guard against damage if the cable is accidentally released.

A choice of three electrical interfacing options covers use for normal and more extreme environments. Direct connection to the potentiometer solder terminals for IP50 protection. IP67-rated options for a 1 metre strain relief cable and an M12 connector option with O-ring seal for wet-environment protection - supplied with a mating cable if required.

As with all Celesco cable-extension transducers, no critical installation alignment is required and mounting is extremely flexible. The SG1 has three through-hole mounting points directly in its housing and is also supplied with a steel mounting bracket that offers four 90-degree opposed mounting orientations as well as front- and back-face fixing. A 4-20 mA output version is also available. The SGD is supplied with an M12 connector and offers IP67 protection.