Instrumentation and Control News

Fast`s technique - on which there are 20 patents pending - is to magnetise the shaft and to sense the changes in the magnetic field that occur when torque is applied. These changes are detected by a sensing head typically placed about 1mm from the shaft, and are then converted into an electrical signal by conditioning electronics

The TMF transducer, developed jointly by Magtrol (formerly Vibro-meter`s instrumentation division) in Switzerland, and GIF in Germany, uses strain-gauge measurement. The sensor is available in rated torques of 450, 1,100 or 2,800Nm, with the optional second measuring range typically being rated at 1/10 of the nominal torque.

The Type 4504A torque sensor from Kistler Instruments is suited to applications where space is at a premium and operating conditions are far from ideal

Kistler Instruments has developed a robust, non-contact torque sensor with integrated digital signal processing called the Type 4504A

At the heart of the TorqSense sensor is pair of tiny, interleaved, comb-shaped arrays laid onto one end of a piezoelectric substrate. By passing an alternating voltage across the terminals of these arrays, surface waves are produced in the substrate. The waves are received by a similar array at the other end which converts them back into an electric signal.

Unlike traditional slip-ring transducers, the TorqSense sensors provide a simple non-contact technology for measuring the power in drive shafts and other rotating elements. Torsion is sensed by a pair of SAW strain gauges bonded to a shaft at right-angles to each other. One senses compression and the other tension, and this information is transmitted via a radio frequency couple to the decoding electronics which generates outputs for torque, speed, power and angle.

A torque sensor is helping analyse recipes’ mixing properties in a project that could slash development costs in the food and plastics industry and help nanotechnology advances in the pharmaceuticals world.

The torque sensing is based on the accurate strain gauge technology. The typical accuracy (linearity and hysteresis) is of 0.05%. Special features are the short length, high stiffness, no bearing and small signal pick up with air gap up to 20 mm.

Programmable High and Low set points with both audible beep and Green/Red LED indicator for uniform torque tightening or GO/NO GO testing...

Universal has launched High Performance Gold Feeders, a family of feature-loaded spliceable tape feeders designed to boost the performance of high-speed chip placement equipment, while supporting line-level reporting and traceability functionality.