Applying SENSOFOIL Technology

Jens Kautzor, sales director for Hoffmann + Krippner discusses two applications for the company’s SENSOFOIL membrane technology with Randy Frank at Sensors Expo 2011. SENSOFOIL membranes enable the design of ultra-flat and very accurate linear and rotary position sensors based on potentiometer technology.

 For more information about Hoffmann + Krippner’s SENSOFOIL membranes, click here.

 To watch the video, click here.

Balluff’s Linear Position Transducer Fits Into Small Spaces and Small Budgets

Designed to fit into small spaces, Balluff’s Micropulse PF-series linear transducer has a profile of less than 1-inch high.  The low profile design targets plastic injection and blow molding; woodworking and metalforming; material handling and more.

Using magnetostrictive sensing technology, the unit has a measurable range of 51 to 4572 mm (2 to 180 in) and a scalable, absolute, analog output (0 to 10V, 4 to 20 mA, 0.1 to 20 mA or -10 to 10V). The non-linearity for a stroke length of less than 500 mm is ±200 µm and for a stroke length greater than 500 mm, it is ±0.04% of full stroke. Based on the use of time-tested, field-proven technology, the company claims the units sell for an “economical price.”

For more information about Balluff’s Micropulse Perfect Fit linear position transducer, click here.

TURCK Linear position Sensors Replace Magnetostrictive and Potentiometer Devices

Minneapolis, MN — TURCK’s new LI-Q25 series linear position sensors replace magnetostrictive and potentiometer devices to deliver precise, repeatable measurements in metal processing machines, rolling mills or injection molding machines. Unlike magnetostrictive or magnetic inductive position sensors, LI-Q25 sensors do not require a magnetic positioning device; thus, they are unaffected by metal debris. The sensors provide up to 1 µm resolution and can achieve measuring ranges between 100 and 1,000 mm with analog voltage/current, SSI or I/O Link outputs.

The linear position sensors use emitter and receiver coil systems, precisely arranged on a printed circuit board, that are activated with a high frequency AC field and produce an inductive RLC circuit with the positioning element (resonator). As a result, the resonator is inductively coupled with the receiver coils. Different voltages are induced into the coils depending on the position of the resonator, and these voltages serve as a measure for the sensor signal.

To increase the speed and accuracy of measurement, LI-Q25 series linear position sensors have a coarse and a fine measuring coil system that is microprocessor controlled. An integrated processor provides an output signal in different formats: 0 to 10 V, 4 to 20 mA, IO-Link or SSI.

The linear position sensors have extremely short blind zones of only 29 mm on each side, along with a wide temperature range of -25 to 70°C. The sensors may also be programmed for different measuring ranges.

TURCK
www.turck.us