Just as you always do - go and create something that will require long range sensors, or just load a blueprint where you want to use them. To make following steps easyer - rename your sensors so you can find them later in a text editor and determine which one should be edited.

I will use modified helper drone, originally created by Baalrog. You can see it's sensor's coverage at the screenshot below:





All big boxes are 50m meters, except for one.

Постройте новый корабль или тот, которому нужны сенсоры дальнего действия.
Советую переименовать сенсоры в процессе создания, так чтобы потом их легче было найти в текстовом файле и было сразу понятно какие изменения будем вносить.

Для примера, я буду использовать измененный helper drone, созданный Baalrog'ом. Покрытие его сенсоров видно на скриншоте ниже:





Все большие кубы имеют сторону 50м, кроме одного.

When finished with building - save your new creation as a blueprint (Press CTRL+B, aiming at the ship). That's simple.
Just to make things easyer - find your new BP in library open Details and Rename it to something you can easily find.


Когда корабль готов - сохраните его в качестве блюпринта (Прицельтесь в корабль и нажмите CTRL+B).
Чтобы упростить себе задачу - переименуйте БП во что-то запоминающееся.

Now press Alt+Tab to switch back to desctop or whatever and go to the following directory:
%userprofile%\AppData\Roaming\SpaceEngineers\Blueprints\local\ (Yes "%" symbols will work in windows explorer)

Find the folder with your new ship, it should be named exactly as you specified in previous step. Open the folder and find file, named: bp.sbc It can be just "bp" if you set file extensions to hidden.

Now, just open it with some text editor. I use Notepad++, but windows buit-in notepad will do too.

In that file you will need to find your sensor(s). Just try searching the string:
<CustomName>Sensor 1</CustomName>
Where Sensor 1 is whatever sensor name you have set.

Next: Look a couple lines below and find a line, which begins with <FieldMin - this one along with the following one <FieldMax are your subject to edit, but all of these is unclear, yeah? :)
Here is the explanation:
FieldMin: (note: always keep values under this field below zero!)
X: Left extent (yes, "-" means nothing there. Game will still parse it as positive value in meters to the left)
Y: Bottom extent
Z: Front extent
FieldMax: (always above zero, as you may notice)
X: Right extent
Y: Top extent
Z: Back extent

Note: This is not tested enought! I might be wrong if XYZ are liked to BP coordinates, but you can find it out yourself.

So, now you just enter values you want to those fields and save the file! That's it.
Note: Game will increase energy demand on this sensor dramatically if you set values above 100m and further, make sure you have good power supply!



You can see a 200m long detection field on the screenshot above.


Now switch back to the game and open your BP library (F10). Push "Refresh" and load your modded craft. Enjoy your long range sensors! What? You forgot to save the text file? :)

//Русский вариант будет позже, если вообще нужен.

I would like to thank a steam user, with name [UESC]soat for the original Idea. Without his forum post and modded sensor BP I will never come to this guide.