MAT-3

Matprobes are designed to be used with the CGM series of crack growth monitors, allowing the user
to obtain crack depth data in the field without the need to provide permanent contact to a
specimen. Spring loaded pins are utilised to form some or all of the contacts necessary for
operation. The probes are designed to be used as handheld devices although it is possible to
incorporate them into other apparatus to maintain fixed geometries (e.g. for use on a production
line).
The MAT-3 handheld probe is an advanced crack depth measurement probe which is made up of
an outer aluminium tube body and two PTFE inserts containing, a high precision pre-amplifier
circuit as well as a detachable probe head that contains all the necessary contacts to pass both the
current and pick up the resultant ACPD voltage signals.