REFRA-Shell II | Ovality Measurement Tool
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The Refra-Shell II is a measurement tool designed to assess the curvature of rotary kiln shells during operation, providing insights into mechanical loads on refractory materials. With its small size, high accuracy, and user-friendly software, it allows real-time monitoring and data processing via Bluetooth. The tool kit includes a basic software package that supports various display options, temperature measurements, and automatic internet upgrades.
REFRA-Shell II | Ovality Measurement Tool
- 2. 22©Refratechnik Cement GmbH Determining the kiln shell curvature during operation Advantages C B A material flow • measurement during operation • high accuracy • small size (mostly pass easily between heat shields or thrust roller and kiln shell) • small weight (measuring instru- ment: ~1.5 kgs / total incl. transport case ~3.5 kgs) • convenient for travelling • user-friendly software • measurement directly displayed on the computer Ovality measurement using REFRA-Shell II REFRA-Shell II is a measurement tool for rotary kilns that is used to determine the curvature of the kiln shell during operation. This elastic deformation is called ovality and is primarily present in the area of a kiln tyre. The measurement gives some accurate information on the degree of mechanical load the refractory material/kiln shell are exposed to, allowing to define countermeasures in terms of refractory selection and/or mechanical maintenance in advance and thus to increase the lifetime of the kiln components. REFRA-Shell II is small, easy to use and supplied in a tough transport case.
- 3. 33©Refratechnik Cement GmbH Measuring principle Components REFRA-Shell II consists of a deflec- tion plate, which will be attached to the kiln shell close to a tyre by means of heat resistant magnets. Due to the strong magnetic con nection, the deflection in the deflection plate follows that of the kiln shell as shown on the previous page. Strain gauges measure the deflection in the deflection plate. The electronic converter amplifies and conditions the signals from the strain gauges and sends them together with the values of the angle position sensor via Bluetooth connection to a laptop. The basic software (for Windows) being supplied together with the measuring tool receives, stores and processes the values from REFRA-Shell II. During the measurement, the values are displayed and calculated directly in real time. There are available different dis- play, zoom and report printing options. 2 6 1 5 LED 1 3 7 8 3 4 LED 2 1. deflection plate 2. fixed magnet 3. laterally movable magnet 4. converter 5. heat shield 6. T-bar handle 7. charger plug (8…25 VDC) 8. power switch 83130 307 80 83130 307 80
- 4. 44©Refratechnik Cement GmbH 1. REFRA-Shell II 2. battery charger with different plug adapters (100…240 VAC) 3. Bluetooth USB adapter (high range) 4. tough transport case (dimensions: 47.5 cm length x 37.0 cm width x 17.0 cm height) 5. basic software 6. REFRA-Shell II manual 7. pyrometer 8. laser distance meter (optionally in the scope of delivery) 9. pyrometer manual 10. laser distance meter manual (optionally in the scope of delivery) 6 9 10 1 4 3 7 8 2 5 The tool kit
- 5. 55©Refratechnik Cement GmbH The basic software being used for REFRA-Shell II is supplied with the equipment and can also be downloaded from www.tomtom-tools.com for free. It is self-upgrading via inter- net, whenever a new version is available. Software and software features Working surface • graphical kiln model with piers • real time graph of measured points • calculation of individual ovality values and average • measurement of kiln shell surface temperature via magnet • online display of sensor status/condition • sensor temperature monitoring/high temperature warning • measurement information and remarks stored together with results • easy display/hide of graphs • switching from point to line graphs • switching from linear to polar graph • free zoom and window arrangement function • easy to connect via Bluetooth • pdf report generation • automatic internet upgrade for free • measurement tool pyrometer and laser distance meter are implemented, too. start button / F5 to reset the window layout select the position to measure switch from polar to linear graph double click on a frame will enlarge the selected window mouse right click to change from line to point display
- 6. Refratechnik Cement GmbH Rudolf-Winkel-Strasse 1 37079 Göttingen Germany Phone +49 551 6941 0 Fax +49 551 6941 104 refra@refra.com www.refra.com Ce1-185-02/2015Ce1-185-02/2015