Marine Navigation
Test Raymarine electronic instrumentation in extreme conditions
Jul
Test Raymarine electronic instrumentation in extreme conditions
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Test Raymarine electronic instrumentation in extreme conditionsElectronics has given a radical change to the whole world, and boating is certainly no exception. Over the past twenty years, navigation assistance systems have made a huge step forward and, even if the sea and nature should never be underestimatedtoday it is possible to enjoy the boat with more safety even when the weather is adverse.
However, it is one thing to talk about normal weather conditions, another about extreme temperatures and hostile environments.
Electronic navigation instruments cannot and must not betray in the difficult situations in which it may happen to find itself during navigation, which is why the on-board equipment is put to very tough tests during the testing phase, often much more than what can happen in a real boat trip, just to be sure that the systems are not damaged by accidental causes or extreme weather conditions.
In this regard Raymarine has come up with a real test centre, where you can develop and test your products in the most intense stressful situationsfrom scorching heat to freezing cold, from impacts to total immersion.
Read also: New for 2023 from Raymarine: more functions and quality in on-board electronics
Vibrations, Raymarine is not afraid of you
During long days at sea, on-board instruments are inevitably exposed to vibrations of all kinds.
This effect caused by the rotation of the motor, but not only, is among the worst enemies of electronics, as constant swinging over a range of frequencies can loosen connectionsfatigue wires, damage solder joints, and cause equipment failure.
That’s why in the Raymarine test center in the UK A dedicated vibration test room was set up, with vertical and horizontal agitators to subject the products to a sinusoidal tone of vibration over a wide range of frequencies.
To give you an idea, the tests focus on a certain frequency for approx two hours con peaks up to 600Hza value far above the standards that vary between 5 and 100Hz.
From the freezer to the oven, tools under thermal stress
For many owners, the use of the boat is not limited to the warm seasons, which is why the equipment must be able to withstand a very wide range of temperatures. Even on this front, electronics have many limits and errors are not allowed.
I Raymarine’s extreme temperature testing take place in specially designed thermal chambers, where the products are repeatedly tested overnight in a temperature range between -25°C and 55°C. Of course, the equipment must know how to start up, restart and function properly.
For tests in a hot chamber, the products must withstand continuous stress lasting months, in which they are also exposed to IR (infrared radiation) tests which simulates midday sunlight to ensure that the displays do not go dark or that warped films do not form inside the display panels.
Even the salt in the tests of Raymarine’s electronic instruments
The next step is the salt spray chamber, where the products have to brave this corrosive substance for two hours before being left in a warm, humid atmosphere for seven days.
This process is repeated four times, bringing the test duration to 28 days. The products are then examined to ensure that the salt and water have not damaged the coatings by causing bubbles, cracks or discoloration.
Electromagnetic compatibility
These heavy stress tests, combined with vibration and drop tests, are followed by power test in the EMC (Electromagnetic Compatibility) area.
In fact, it must be considered that the interference deriving from the switching on of other equipment of the vessel can interrupt the shared power supply.
These tests ensure that the products continue to operate in the various voltage ranges which could cause voltage drops, inrush currents and overvoltages.
The trials didn’t end there: the equipment is moved to another room to make sure it can work efficiently even if exposed to a strong radiated electromagnetic field.
Waterproof and submersible
Last, but not least, the prove IPX6 to verify the water and/or dust resistance capabilities.
During these tests the products are continuously sprayed with 100 liters of water per minute by a fire hose, for a minimum of 30 minutes.
The industry standard requires that products are then left in a humid, drizzly atmosphere for half an hour, but Raymarine has extended this time frame for up to an hour.all day so as to more accurately simulate real-world use.
Later a group of engineers disassemble the equipment to verify that it is not even there a drop of water inside.
If that weren’t enough we then move on to testing IPX7 to determine the capacity of resistance to immersion to a defined depth for a specified duration. Dip tanks are also used to check the performance of the sonar transducer.
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We thank you for your patience and understanding.
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