Features - JRC NJJ-105 Handy Search User Manual

1.2 Features

This product has the following features:
(1) The material of the object to be scanned can be either metallic or non-metallic
Reflected electromagnetic waves are generated at an interface when the
electrical property of an object is different from that of concrete. Thus, this
product can probe polyvinyl-chloride pipes and cavities (dependent on the
position and
polyvinyl-chloride pipes and cavities echo weakly in compared with the
reinforcing steel bars.
If a polyvinyl-chloride pipe or cavity is near or below the reinforcing steel bars,
the reflected signals from the polyvinyl-chloride pipe or cavity may not be
obtained due to the strong reflected signals from the reinforcing steel bars. Thus,
care should be taken when you make a judgment on the scan result.
(2) Detects rebars that cross the scanning direction
Rebar that cross the scanning direction transmit a large magnetic wave
reflection. On the other hand, rebar that is parallel to the scanning direction
transmit a smaller magnetic wave reflection. Even if scanning is performed
above rebar that is parallel to the scanning direction, this product can still detect
any rebar that is crosswise to the scanning direction.
(3) Obtaining continuous scan results
The scan result are obtained as a representation of the vertical cross section
of the inside of concrete. Thus, a comprehensive view of the internal concrete
conditions can be obtained.
(4) Obtaining scan results at the site
This product does not need to be secured to the surface of concrete.
Scanning is carried out while this product is moved,
concerning the internal conditions of the concrete can be provided immediately.
(5) Saving and reading scan data
Using a CF memory, scan data can be saved and reopened (maximum of
roughly 50 sets of data can be saved in text format for a depth of 15 m using a
512 MB CF). The data can also be loaded from the CF memory into a PC by
using a memory reader or the like.
(6) Printing without cable connection
This product is equipped with IrDA, therefore, printing can be performed
without using a cable using a DPU-3345 series printer.
However, the IrDA optical receptors for this product and the printer must be
set facing each other at a distance of 50 ~ 500 mm (without any obstacles
between them).
size) as well as the reinforcing
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steel bars. Note
and scan results
that