Dartec ltd, uk, has introduced closed loop servo hydraulic utms and actuator systems, marketed by productive technologies. These are available with fully digital 32-bit microprocessor control and windows based software for diverse applications in the field of materials testing for evaluation of quality, endurance and fatigue life estimation. They offer perhaps the most comprehensive range of servo hydraulic and twin screw driven utms and actuator systems for materials testing and quality evaluation to meet qa and r&d oriented testing in industry and educational institutions. Machines come in capacities ranging from 10 kn to 2 mn. They comprise a diverse range of applications including static tension/compression, fatigue, low cycle fatigue, fracture toughness, high speed impact, etc. Optionally, environmental chambers and special furnaces for high temperature and below zero degree testing are available. A complement of tooling and grips, extensometry and clip gauges along with application specific user friendly software provide the users with complete testing solutions. At the heart of all dartec test systems is their advanced digital controller. Model 9600 control system comes in both single channel and multi-channel format. Thus it is suitable for both utm and test rig based applications. 9600 system offers 32-bit leading edge technology with faster control loop, higher resolution, lower noise and a revolutionary adaptive control, which has been named mimics by dartec. Dartec is also the first company to make digital linearisation of sensor signals. It is the only controller to offer up to 8 modes of control per channel along with good data acquisition capabilities. Thus, it is a first choice of discerning testing machine users internationally.
