Posted to News on 25th Jun 2011, 14:04
Novotechnik NOVOPAD LS1 non-contact linear transducers
Variohm EuroSensor is launching the Novotechnik NOVOPAD LS1 series of compact and robust linear position transducers that feature a novel non-contacting and long-life inductive measurement principle. The NOVOPAD LS1 series transducers feature an integrated signal processor with optional voltage or current output, together with a teach function and a status LED for straightforward in situ range setting. The NOVOPAD principle is based on a low-cost printed circuit board design that enables an absolute linearity of up to 0.05 per cent to be achieved across the full measurement range.
The push-rod style LS1 has a durable anodised aluminium housing with a profile of only 18mm x 18mm. With a double-bearing support that permits relatively high lateral loads to be experienced at the rod tip, the transducer can be supplied with or without an internal return spring. The internal spring version, available in four measurement ranges from 25mm to 100mm, includes a rear end adjustable stop nut to facilitate connection to hydraulic and pneumatic actuators or solenoids. The non-sprung version, supplied in six range versions from 25mm to 200mm, has a hardened ball coupling that enables backlash-free and shear force-free operation even with axis misalignment.
Further options across both LS1 styles include a choice of 12- or 13-bit resolution to suit measurement speed and resolution requirements, and a choice of 0-10V DC or 4-20mA outputs. Electrical connection includes a three-wire cable, a directly mounted three-way connector in both straight or angled M8 styles, or a cabled connector in a choice of cable lengths.
Long-life operation
The non-contacting and wear-free transducer is capable of 100million movements or 175,000 hours of operation, with a maximum speed of 5m/s and acceleration to 5 'g'. Other environmental specifications are a shock rating to 100 'g', vibration to 20 'g' at 10 to 2000Hz, and an operating temperature range of -30 to +100degC for the cabled version.
Furthermore, as the NOVOPAD inductive measurement principle used in the LS1 is not affected by magnetic fields, they may be used in close proximity to magnetic devices such as linear and rotary servomotors. The transducers may also be exchanged, or removed and replaced, without the need for recalibration.
The new NOVOPAD LS1 series is part of a wide range of Novotechnik contacting and non-contacting linear and angular position sensors available exclusively in the UK and Ireland from Variohm EuroSensor. Contact Variohm EuroSensor for more information.
