Automatic Inclinometer: How do you know you have installed in the correct elevation?

[saiya]

In an automatic inclinometer chain of 16 sensors distributed in 30 meters, how do you know you have installed in the correct elevation?

What is the industry standard for installation and checking?

 

[EireChch]

You know the elevation of the borehole and you place the inclinometer to a depth below the top of borehole???/