Hilti PS 250 Manual De Instrucciones página 23

individual Quickscan recordings are subsequently correctly displayed in Hilti PROFIS Ferroscan MAP (data evaluation
and presentation application) and that the depth values correspond with the actual surface of the structure. This
makes it easier to subsequently locate the positions of areas with inadequate cover. The scanning direction is saved
together with each scan.
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Select the desired scanning direction and press the Confirm button.
Bar diameter
This setting must be made in order to obtain an accurate depth of cover measurement (= rebar depth). Depth can be
measured accurately only when correct rebar diameter has been entered.
Use the Arrow buttons to select the bar diameter function and then press the Confirm button.
If no bar diameter is selected, the scanner will take the average diameter value for the relevant standard setting range
and calculate the depth accordingly.
CAUTION
Use the "Unknown diameter" function only under exceptional circumstances as the results of the scan may be
distorted considerably if rebars of a different diameter have, in fact, been incorporated in the structure.
Average bar diameter according to standards
Standard
DIN 488
ASTM A 615 / A 615M‑01b
CAN / CSA-G30, 18-M92
JIS G 3112
GB 50012-2002
GOST 5781-82
BIS 1786:1985
NOTE
The bar diameter previously set will be saved in the scanner when switching it off. Check each time before using the
scanner that the rebar diameter has been preset correctly.
20
∅
16 mm (0.63")
#7
C 20
D 22
18 mm (0.71")
18 mm (0.71")
16 mm (0.63")