FloormapX System Overview
33
Imperial
Coating Thickness (mils)
0mils
40mils
80mils
120mils
160 mils
200mils
240mils
Pl
at
e
Thi
ckne
ss
(i
n
ch
)
1/4in
High or Low High or Low High or Low High or Low Low
Low
Low
5/16in
High or Low High or Low High or Low Low
Low
Low
Low
3/8in
High or Low Low
Low
Low
Low
Low
Low
1/2in
Low
Low
Low
Low
Low
Low
Low
9/16in +
Low
Low
Low
Low
Low
Low
Low
IMPORTANT
Operation outside the recommended specifications is possible, for example operating the
FloormapX on 16mm (5/8in) in the high position, but detection and consistency criteria
maybe adversely affected. Investigation of performance is recommended prior to inspection
to understand performance.
All calibration, especially those that are performed on plate thicknesses of greater than 12mm
(1/2in) should be verified and performance understood prior to inspection as detection and
repeatability may be affected.
It is recommended to include a scan overlap for inspections that are to be performed on plate
thicknesses of greater than 12mm (1/2in).
2.5
MFL Technique
To detect a leaking field, the FloormapX uses hall effect sensors mounted between the poles of a
magnetic bridge. The magnetic bridges include strong permanent magnets that induce a magnetic
field into an inspection specimen. The presence of a defect in the inspection specimen causes the
induced magnetic field to leak and it is this leaking magnetic field that the suitably placed hall effect
sensors detect.
MFL systems are heavily reliant on the inspection surface, upon which they operate. It is important
to understand that as the condition of the inspection surface deteriorates, so can the effectiveness
of any MFL system. All MFL systems interpret a leaking field and any influencing factors that affect
this leaking field must be understood and factored into the inspection process.
As MFL can, in part, be considered as a volumetric detection technique, it is important to understand
the relationship between the calibration defects and defect depth. In cases where accurate remaining
wall thickness is required, any defect indications reported with the FloormapX system should be cross-
checked with an alternative method (such as UT or a pit gauge).
Summary of Contents for Floormap X
Page 1: ...User s Manual Floormap X MFL Array Tank Floor Inspection Solution...
Page 10: ...10 Chapter 1 Precautions and conventions...
Page 16: ...General Precautions and Conventions 16 1 5 EU Declaration of Conformity...
Page 19: ...19 Chapter 2 FloormapX System Overview...
Page 35: ...35 Chapter 3 Inspection Preparation Setup and Operation...
Page 43: ...43 Chapter 4 SIMS GO Data Acquisition Software...
Page 69: ...69 Chapter 5 SIMS PRO...
