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rudder master rudder angle indicator
Rudder master rudder angle indicator is an instrument used to indicate the rotation direction and angle of rudder blade when the ship is moving. It is a good helper for sailors and first mate. There are single-sided rudder angle indicator, three-sided rudder angle indicator and single-sided waterproof indicator. The single-sided rudder angle indicator is a set of device used to display the rudder angle information of the ship accurately and in real time on the bridge, cockpit and other places where the rudder angle information needs to be displayed; The three side rudder angle indicator is a set of device used to display the rudder angle information of the ship accurately and in real time in the places where the rudder angle information needs to be displayed, such as the bridge and cockpit; The single-sided waterproof indicator is a set of device used to display the rudder angle information of the ship accurately and in real time on the bridge, cockpit and other places where the rudder angle information needs to be displayed. There are also signal distributors and rudder angle transmitters.
The main technologies are as follows: it is suitable for use under the temperature of - 15 ℃ ~ + 55 ℃ and the humidity of 93% ± 2% (the ambient temperature is 25 ℃ ~ 40 ℃). The measurement range of rudder angle is - 50 ° ~ + 50 °, the data transmission rate of rudder angle is 5 times / s, and the output data format conforms to iec-61162 standard. This technology is qualified and can be used safely.
The existing ship rudder master rudder angle indicators include 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.
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