Features - JRC Handy Search NJJ-95B Instruction Manual

1.2 Features

This device 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 radar
can probe polyvinyl-chloride pipes and cavities (dependent on the position and
size) as well as the reinforcing steel bars. Note that 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 search results.
(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 device can still detect
any rebar that is crosswise to the scanning direction.
(3) Obtaining continuous scanning results
The scanning results 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 scanning results at the site
Handy Search does not need to be secured to the surface of concrete.
Scanning is carried out while Handy Search is moved and results concerning
the internal conditions of the concrete can be provided immediately.
(5) Saving and reading scan data
Using a compact flash 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 compact flash). The data can also be loaded from the
compact flash memory card into a PC by using a card reader or the like.
(6) Printing without cable connection
The unit is equipped with IrDA, therefore, printing can be performed without
using a cable using a DPU-3345 series printer.
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