position indicator - SIKO - #51

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2.6 1.2 1.3 1.4 1.5 1.6 1.1 1.0 1.7 www.siko.de Scales for control knobs with analog display Each scale must meet different requirements depending on the wide range of applications of analog control knobs. The basis for the displayed values is always the gear ratio. This defines the path which must be traversed after a specific number of rotations of the pointer (DK03) itself or the scale under the stationary pointer (DKA02). This why standard scales cannot do justice to all requirements. For these cases, SIKO supplies special scales which can be designed to suit customer requirements, for example for tracking adjustment in both directions, starting at zero and requiring a scale with ascending and descending values. Non-linear scales are also possible, for example to display the opening degree of a valve. Precise information in the form of diagrams or technical drawings are necessary for manufacturing such scales. Special requirements such as graduation, digits, company logos and color wishes can also be met. Free angle In some cases it can be necessary to provide a free angle,i.e. a zone on the scale which is not used for display purposes. This depends on your application and the ratios supplied by SIKO. Free angles for the display of adjustment with a lower ratio are particularly used for the DKA02 control knob, which is only available with a fixed ratio of 26:1. Refer to the section on handwheels (page 70) for more information on this topic. In some cases it can be necessary to provide a free angle,i.e., a zone on the scale which is not used for display purposes. This depends on your application and the ratios supplied by SIKO. Normal scale (DKA02) and special customized scales: A sketch is normally sufficient in most cases. Refer to drawing aids (handwheels, accessories). DK03 special scales (linear/non-linear, with one or more colors) DK03-normal scale 51