Precautions when replacing PDL with PGL

Relation

• What is the precautions when replacing PDL with PGL?

• I think there is sampling of PGL-050W3 / 180W3, normal / high speed mode.
  Is there any difference in how to capture values between normal and high speed? Is it just a difference in time?
  There seemed to be a difference other than time. Please tell me. It is used to detect the end face of a steel rod,
  It seems that he wants to refer to it in the averaging process when there are fluctuations due to heat and variations due to temperature.

• Is it possible to use the reflective sheet of PDL-120P with PGL-180W3?

• The position of the dolly becomes in error and it is happened to collide. It often happens when turning on the power, and after some time the problem is solved. Is there any countermeasures?

• Is PGL affected by magnetic fields?