MR12SPX
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Catalog excerpts

To measure the contact resistance of carbon strips of current collectors used by trains, electric trams and trolley buses The MR12­SPX and its measuring probe are used for inspection and quality control of carbon strips of current collectors used by electrical powered trains, electric trams, trolley buses and similar vehicles. Here the current collectors are preferably roof mounted. Due to the often pairwise mounting of the carbon strips, there is little space between the lowered collectors. Therefore the measuring probe itself is very small. The design can be modified for your needs. The measured variable is the electrical resistance in µΩ or mΩ between the aluminum fixing rail (bottom) and the conducting carbon layer (top). The measured resistance changes due to wearing of the carbon strip or not correct (conductive) bonding of carbon layer and fixing rail. Overload, incorrect bonding or other overstraining can cause separation or failure of the adhesive bonding. Through the measuring principle and the special contacting the MR12­SPX can achieve accurate and reproducible results, even if the aluminum fixing rail is very dirty due to heavy wearing and flying sparks. The equipment is battery powered and has a shoulder strap for easy carrying. The measurement values are internally stored and can later on be transfered to a PC. μ­Ohmmeter with easy to handle probe Technical Specifications: Automatic Ranges: Resolution: Max error: Maximal resistance: Measuring current: Resistance control: 1 ADC with external reference resistor RS232C for accessing the internal stored test results (2000 values) Power supply external: 100 ­ 240 VAC Power supply internal: Battery with 2950mAh Weight MR12­SPX: 3.3 kg Dimensions MR12­ 260 x 100 x 310 mm SPX: (WxHxD) Weigth Probe: Dimensions Probe: Contact us for more information: Phone: +49 (0)3328 / 3179 ­ 0 Fax: +49 (0)3328 / 3179 ­ 10 E­Mail: sales@schuetz­messtechnik.com www.ohmmeter.de SCHUETZ­MESSTECHNIK GmbH, Rheinstraße 7d, 14513 Teltow, Germany April 2018. Changes are subject to change without notice.

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