Reference Block Type 2
Reference Block 2 acc. to DIN EN ISO 9934-2
Reference block type 2 is a self contained unit requiring no
external magnetic field induction. It comprises 2 steel bars
and two permanent magnets. It shall be calibrated such that
the +4 mark represents +100 A/m and the -4 mark represents
-100 A/m.
Indication lengths give a measure of performance.
Indications start at the ends and decrease towards the centre.
Increased length show better performance. Results shall be the
cumulative length of the left and right hand indications.