Zettlex has announced an expansion of its IncOder range which now offers more than 4 million product versions. The products are high-precision, harsh environment angle encoders which use an inductive technology to enable a low height, large bore, bearingless sensor. The form factor makes it easy for designers to accommodate through shafts, slip-rings, hydraulic pipes or electrical cables which can simply pass through the middle of the sensor. The products are popular with equipment manufacturers and system integrators because high precision is achievable without fine installation tolerances and the need for environmental protection is minimal because the sensors are unaffected by most foreign matter. As well as the existing range of absolute digital outputs, the expanded product range now includes A/B pulse outputs; electrically duplex formats; resolution choices from 1k to 4M counts per rev and analogue voltage outputs for all sizes from 25 to 200mm bore. There is also an 'extended range' of products aimed at the aerospace and defence sectors offering features such as extended burn-in testing, conductive surface finishes, -60 Celsius operating temperature and leaded solder.