With the original counters from SIKO, position values can be checked reliably directly on the axle or spindle. Simply plug onto the shaft, lock, done – thanks to a sophisticated technology, the small "indicators in orange" are in tireless use as spindle position indicators worldwide a million times. Position indicators from SIKO are being used in all production environments across most branches of industry, as guiding elements, material stops or tools must be positioned or aligned precisely and reliably on nearly all machines or units.
In an industrial environment, our customers especially appreciate the precise and reliable recording of measurement values offered by the electronic position indicators. The movement of the axis is then no longer recorded using a gear, but in a touchless manner – using either a magnet or a capacitor. The magnetic measurement method is particularly robust and resilient to dirt or vibration and is suitable for use in particularly rough environments. The generous LCD display technology also allows for a clear reading of the respective position values. A typical application: The stop adjustment on cross-cut saws depends on very precise display values. Additional flexibility is offered by the incremental measurement function implemented and by entering offset values.
Even the best measurements are worth nothing if they cannot be displayed correctly. This is where tried-and-trusted SIKO displays come into play. LCD and LED displays are available in a wide variety of mechanical and electronic versions. Thanks to the flexible selection of interfaces, you can find the right display for every encoder, angle encoder, potentiometer and absolute encoder. Suitable for the indication of values measured by various types of distance and angle encoders. The electronic display units are freely programmable and have interfaces for communication with superordinate controls.
Analog position indicators from SIKO are used for a wide range of industrial applications. They serve as position indicators for process settings in the chemical and pharmaceutical industry as well as for food processing and in breweries. SIKO dials are also used for format adjustment on printing machines, wood processing machines or tablet presses. These position indicators are also suitable for use on dosing pumps, bakery machines or grain and coffee mills for adjusting the respective process parameters.
The SIKO range of incremental rotary encoders is highly flexible regarding the choice of interfaces as well as mechanical complexity. Whether especially compact housing designs starting with Ø 28 mm diameter, rotary encoders with very high type of protection or also a wide temperature range of -40…+100°C – diversity knows nearly no limits. The incremental rotary encoders are available in hollow shaft design (up to 22mm) or solid shaft design.
Absolute rotary encoders also called Absolute value encoders, are encoders which unambiguously encode every shaft position and display it as a position value. Thus, absolute value encoders are able to deliver unambiguous position values from the moment they are started. For instance, an absolute rotary pulse encoder detects its position exactly also after restart even when it has changed in the de-energized state. Therefore, with the absolute measuring method compared to incremental rotary encoders, there is no need for time-consuming reference travels after machine start or after loss of supply voltage.
SIKO wire-actuated encoders / string pots have been in use for many years in the field of length measuring technology and have already proved their worth in different conditions, including difficult conditions. Sturdy compact design combined with highest precision and reliability are the governing criteria of new developments in this area. How they work could not be simpler: a measuring wire is wound onto an internal drum in one layer, guaranteeing very high linearity across the entire measurement range. When the wire is pulled out, the drum rotates. The angle sensor connected directly to the drum axis registers this rotation and produces a measurement signal that is proportional to the wire movement and that can be evaluated at will. The wire is returned using a spiral spring on the rotational axis of the drum. Because the wire is simply attached to the measurement object, the assembly effort is especially low.
Potentiometers and Inclinometers
Multi-coil hybrid potentiometers are particularly suitable for applications with a long service life and low signal noise, for example as a position sensor in position control loops of dancer potentiometers for paper processing, textile machines, slewing systems and lifting gear of crane and excavator systems or actuators in power plants and chemical plants. The geared potentiometers equipped with wire or plastic resistor elements supply current or voltage signals of 4 - 20mA as well as 0 - 10V with optional, integrated analogue R/I or R/U transducers. All transducers feature trimmers with which the output signal of the respective angle deflection of the transmitter can be adjusted. Oil-filled potentiometers of protection category IP65 or IP68 are available for measuring points in extremely soiled or wet environments.
Inclinometers are most suitable for recording inclinations with respect to the earth’s center and transmitting them back to a higher-level control as a position response. The SIKO inclinometers all work on the modern principle of MEMS technology. (Micro-Electronic-Mechanical System). With this measuring principle, a series of electrodes are housed in a hermetically sealed ASIC chip. The capacitive voltage between the electrodes is measured. Recording can be done either as a single axis (0…360 °) or as a double axis ( 80°) with a system accuracy of a maximum of 0.1 ° and a resolution of 0.01 °. The measured data is output directly as analog (0…10 Volt or 4…20 mA) or as digital (RS232) values or via per CANopen. When using the CANopen interface, a bus operation is also possible for up to 127 participants.