outboard boat gauges sets

• 2023-02-17

Depending on the size of the ship, the output power of the engine, the high waterline, the fluid resistance of the ship, and many other factors, generally small propellers are used at high speeds, and large propellers are used at low speeds. Small propellers are generally suitable for ships with smaller tonnage, about 800 rpm per minute or more, and large propellers 300-450 rpm. If the engine power is small, medium-sized cargo ships are generally 300 rpm. So customers can select suitable outboard boat guages sets.

However, in practice, the higher the speed is, the better it is. It depends on whether the output power of the engine and the structure of the propeller will waste power. It is assumed that even if the power of the engine is very high, the speed of the propeller is also very high, but the blade design is not suitable for the structure of high-speed water flow.

Within a certain rotational speed, the higher the rotational speed of the ship's propeller, the greater the thrust generated and the faster the speed. However, when the propeller exceeds the optimal speed, because the water around it cannot flow in time when it rotates, it will produce a "cavitation" phenomenon. Therefore, its thrust is reduced, and the ship runs slowly. Generally, the best speed of civilian ships is below 300 rpm, and the lowest speed of warships is less than 600 rpm.

Of course, this is not for the sake of beauty, but to identify the nature of the gas or liquid flowing in the pipe. For example, reddish brown represents steam pipe, brown represents fuel pipe, blue represents gas pipe, light blue represents air pipe, yellow represents lubricating oil pipe, green represents water consumption pipe, black represents sewage pipe and waste steam pipe , etc . So , customers need to select suitable outboard goat gauges sets of the tachometer . The engine speed sensor can be divided into three types according to the principle of signal generated by the sensor: magnetic induction type , photoelectric type and Hall type. The electromagnetic induction speed sensor is divided into 2-wire system or 3-wire system, while the common Hall type speed sensor is 3-wire system . The second line is power line and AC signal line respectively , and the third line of the third line is AC signal shielded line , which is connected to the ground .