English 
rudder angle indicator definition
The indicators of rudder angle indicators are all milliammeters. This instrument uses the force of the energized coil in the magnetic field to move and overcome the different positions of the spring force to represent the rotation angle of the rudder blade. This indicator often has inaccurate indication, low sensitivity and poor performance due to dust particles, deformation and voltage fluctuation. The rudder angle indicator includes inductive rudder angle indicator and DC power rudder angle indicator. The inductive rudder angle indicator is composed of a power box, a transmitter and an indicator. The transmitter is composed of a shell, a stator and a rotor. The stator is wound with two inductive coils. The two inductive coils form a bridge circuit with resistors, potentiometers and diodes. It is four bridge arms. The rotor is connected with the rudder stock. The rudder blade deflects a certain angle to drive the rotor to rotate, The inductance of the two inductance coils on the stator changes, the bridge loses balance, and the pointer of the indicator also deflects a certain angle. This rudder angle indicator uses the change of inductance to reflect the change of rudder blade angle, with large indication error, low sensitivity and complex adjustment. Moreover, affected by voltage fluctuation, it will also increase the indication error and poor performance. The rudder angle indicator of DC power supply is also composed of a power box, a transmitter and an indicator. The transmitter is provided with a number of contacts in series with the resistance in the shell. The contacts are provided with sliding contacts. The sliding contacts fasten the transmission shaft and connect the rudder stock. The rudder blade deflects a certain angle to drive the sliding contacts to slide on the contacts and contact the contacts at different positions to convert the change of rudder contact into voltage change, The partial voltage switches different voltages through the sliding contact, and the pointer of the indicator indicates a certain angle of rudder blade deflection. Due to the invasion of moisture, the resistance value of this rudder angle indicator often changes, the sliding contact also has poor contact due to corrosion and wear, voltage fluctuation, etc., resulting in large indication error, low sensitivity and poor performance. At the same time, the adjustment is also complicated.
Our rudder angle indicator has the advantages of high indication accuracy, digital interface, long transmission distance, strong anti-interference ability, no noise, intuitive and clear indication, small volume, light weight, good reliability, long service life, convenient installation, commissioning and maintenance.
Get a Quote / Info