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raymarine rudder angle indicator
Raymarine rudder angle indicator is a necessary equipment for small ships of all sizes sailing on the sea. Its main function is to transmit the rudder angle position information of the ship to the places that need to be viewed, such as the cab and rudder cabin. The system device has the advantages of high accuracy, low working noise, intuitive indication and so on.
The input signal of the index is generated by the raymarine rudder angle indicator , generally potentiometer or encoder, which has some mechanical interface with the cover. The first mock test is generated by a single potentiometer and transmitted to 4-20mA, 0-10V from the amplifier/ motorist to the index. This result has some essential problems and is frequently used for low- cost results. Binary analog signal ( sin/ CoS), which is generated by binary sin/ cos potentiometer and transmitted from amplifier/ motorist to index in the form of 4-20mA, 0-10V, etc. This result is nearly the standard of analog signal type. CANopen signal is a signal generated by the optic encoder and transmitted as a can open signal. As further and further results use can, this signal type is being used.
From the perspective of display, the angle of synchro instrument is relatively large, generally more than 300 degrees, while the actual angle of moving coil instrument is generally small, generally about 90-240 degrees; From the perspective of linearity, due to the quality of hairspring and magnetic steel of moving coil instrument, the influence on linearity can not be underestimated, and it is often necessary to use the density of scale line for correction. From the perspective of service life, the main accuracy of moving coil instrument is poor seismic performance, which is determined by the characteristics of hairspring structure. Synchro instruments must be used in pairs, that is, the transmitter must also be synchro. Although in recent years, there are also synchro signal conversion of electronic modules, it is generally rarely used because of its high price. The power consumption of the synchro is large. In the long run, the indication will be inaccurate or impossible due to the aging of the coil, the grinding of the bearing, the cleaning of the bore between the rotor and the stator, etc; In terms of the balance adjustment of the watch, the pointer watch has high requirements and the adjustment is also very complex. Nevertheless, some watches also need to be installed and used "vertically" or "horizontally". In particular, because the linearity of the rotating torque of the moving coil watch has a great relationship with the structure of the watch, for example, a very light-weight watch needle must be used, otherwise the sensitivity and linearity will be affected.
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