NON-FLUSH CYLINDRICAL SENSORS

Sometimes called non-embedded
or non-shielded, non-flush sensors
have electromagnetic fields with a
wide sensing angle and are
unshielded (no metal surrounding
the sensing head). Care must be
taken to insure that no non-target
metal comes in near proximity to the
sensing head. Distances are
demonstrated in Figure 8. Adjacent
sensors should be separated by at
least 2 times the diameter. Non-target
metal should be at least 3 times
the sensing distance directly across
from the sensing head. Two directly
opposite sensors should be at least
6 times the sensing distance apart.