Rail-mounting filters condition acquired signals
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Kemo product story
Edited by the Engineeringtalk editorial team
Jul 18, 2003
The Kemo DR range of DIN rail mounting filters offer a fast, easy-to-install solution to signal conditioning in electrically noisy industrial environments.
The Kemo DR range of DIN rail mounting filters offer a fast, easy-to-install solution to signal conditioning in electrically noisy industrial environments.
The combination of configurable input gain and a flexible range of signal filters makes the devices ideally suited to applications such as noise reduction, anti-aliasing, band limiting and signal optimisation in industrial data-acquisition, measurement and control systems.
The new family is based on the established Kemo CardMaster 1 filter carrier card, and two versions are available: the DR 1200, offering a fixed factory-set frequency from 1Hz to more than 500kHz; and the DR 1600, in which the frequency can be set in 255 steps by DIP switches, with versions covering the frequency range from 0.2Hz to 127.5kHz.
A range of filter responses is available, including lowpass, highpass and notch filter characteristics.
Both versions have configurable input gain, set by externally accessible DIP switches, from 0 to +60 dB (x1000), AC/DC input coupling, single-ended/differential inputs and a 24V IEPE transducer power supply that is adjustable to 10mA.
The signal zero voltage is floating with reference to the power supply, allowing flexibility in system earthing.
The differential input allows use with 4-20 mA systems in conjunction with a current-sense resistor.
The DR unit measures 45 x 78 x 110 mm, and fits onto a 35 x 15mm DIN rail.
Screw terminal connectors are fitted.
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