FLUID POWER: Position feedback devices are commonly implemented in hydraulic applications for monitoring the performance accuracy of actuators and cylinders to improve operational efficiencies. The environment in which the embedded sensor must survive can be problematic. The hydraulic fluid is under high pressures and temperatures and the actuators and cylinders typically live in environments where heavy shock and or vibration are present.
Macro Sensors offers the HSTA and HSTAR Series of LVDT-based linear position sensors that offer both the environmental resistance and short stroke sensor body length ideal to perform in cylinder applications where sensor length and survival in harsh environments are critical.While linear position sensors were once considered too long for hydraulic applications, the development of new winding techniques, such as computerized layer winding and improved microprocessing, has considerably reduced the length of the linear position sensor body compared to its measurable stroke length. In fact, for short stroke actuators and cylinders (less than 6 inch), Macro Sensors linear position sensors can be much shorter than a magnetostrictive sensor.
Hermetically sealed, these ¾ inch (19 mm) diameter, ac-operated linear position sensors can survive and thrive in high temperatures of 200 degrees C and withstand high shocks and vibration. Coil windings are sealed against hostile environments to IEC standard IP-68. Other significant features:
Offered with either an axial (HSTA) or radial (HSTAR) connector, units can have a through bore for the fluid to pass or can seal the fluid in the RAM. The radial connector makes the installed length of the HSTAR LVDTs at least 2 inch shorter than comparable units with an axially mounted connector for easier installation in tight spaces.
Accessible from both ends, the linear position sensors can be easily cleaned of grit, dirt, dust or other contaminants for greater reliability and longer life.
Available in ranges of ±0.050 inch (±1.25 mm) to ±10.0 inch (±250 mm), the HSTA and HSTAR Series sensors feature the high resolution, excellent repeatability, and low hysteresis associated with LVDT (Linear Variable Differential Transformer) technology, as well as the highest sensitivity consistent with good linearity. The maximum linearity error for any of these sensors is ±0.25 percent of full range output using a statistically best-fit straight line derived by the least squares method.
Macro Sensors offers custom designs for higher temperatures and pressure resistance, smaller diameters and connector options.
HSTA and HSTAR Series LVDTs operate properly with any conventional differential input LVDT signal conditioner. Ranges of 1.00 inches or greater will also work with ratiometric LVDT signal conditioning. Macro Sensors offers a full line of LVDT signal conditioners that will deliver optimum performance from any HSTA and HSTAR Series linear position sensor.
In this new Design News feature, "How it Works," we’re starting off by examining the inner workings of the electronic cigarette. While e-cigarettes seemed like a gimmick just two or three years ago, they’re catching fire -- so to speak. Sales topped $1 billion last year and are set to hit $10 billion by 2017. Cigarette companies are fighting back by buying up e-cigarette manufacturers.
Advertised as the "Most Powerful Tablet Under $100," the Kindle Fire HD 6 was too tempting for the team at iFixit to pass up. Join us to find out if inexpensive means cheap, irreparable, or just down right economical. It's teardown time!
The increased adoption of wireless technology for mission-critical applications has revved up the global market for dynamic electronic general purpose (GP) test equipment. As the link between cloud networks and devices -- smartphones, tablets, and notebooks -- results in more complex devices under test, the demand for radio frequency test equipment is starting to intensify.
Much of the research on lithium-ion batteries is focused on how to make the batteries charge more quickly and last longer than they currently do, work that would significantly improve the experience of mobile device users, as well EV and hybrid car drivers. Researchers in Singapore have come up with what seems like the best solution so far -- a battery that can recharge itself in mere minutes and has a potential lifespan of 20 years.
Some humanoid walking robots are also good at running, balancing, and coordinated movements in group settings. Several of our sports robots have won regional or worldwide acclaim in the RoboCup soccer World Cup, or FIRST Robotics competitions. Others include the world's first hockey-playing robot and a trash-talking Scrabble player.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.