6. Application 6.1. Relative permittivity setup The relative permittivity setup is made by detecting an embedded steel bar with a known covering depth or the wall with the known width and adjusting the relative permittivity value so as to get the measured depth or width of the object matched with the known value. This section provides the setup procedure using the wall with a known width. (1) Confirm the wall width Confirm the width of the wall by using the scale.
(2) Scan the wall Scan the wall with the relative permittivity 8.0 of the sensor unit. For the procedure to set the relative permittivity of the sensor, refer to Section 4.11.1 Device setting: [Relative permittivity] menu) The reflection wave from the opposite side of the wall appears on the main screen as the shape of the horizontal band as shown in Figure 6-2. Move the horizontal cursor on the edge of the horizontal band. The depth value of the cursor is displayed in the cursor coordinate.
(3) Show the relative permittivity setup screen. ) Tap [Relative permittivity] icon to show the relative permittivity setup screen. The current depth of the cursor position is shown in the screen. Here shows the depth of the current cursor position.
(4) Set the relative permittivity value. Tap the value of the relative permittivity, then the list of the available values appears. When the cursor depth is wider than the confirmed width of the wall, increase the relative permittivity value. Decrease the value when cursor depth is narrower than the confirmed width. (You can scroll the list upward and downward, and you can select a value in the range from 2.0 to 20.
(5) Register the relative permittivity in the device setup screen. ) ) Tap [□Applies to the measurement], then confirm a mark 9 is shown in the [□]. With this, the relative permittivity value is registered to [Device setup: Relative permittivity] menu in the parameter setup screen. Then tap [OK] to complete the relative permittivity setup, then the screen returns to the main screen.
.2. Procedure to mark the rebar This product is equipped with a chalk guide at the front and rear edge of the sensor unit. By using the chalk guide, you can easily mark the rebar position on the concrete during the scan. The marking is made at the position where the fixed cursor position is matched with the rebar position (peak of the inverse U shape shown in the B mode display). This section describes the procedure to mark the rebar on the concrete. 6.2.1.
6.2.2. Backward scan marking When scanning backward, the chalk guide at the front panel is used to mark the rebar position. Move the sensor unit so as to superpose the rebar position (peak of the inverse U shape shown in the B mode display) on the fixed cursor. Then mark a line on the concrete along the front chalk guide. Adjust the sensor unit position to superpose the fixed cursor on the rebar position. Make a line along the rear chalk guide.
6.3. AutoMark function AutoMark is the function which automatically analyzes the scan data, detects the position of the embedded object, and adds a marker on each of all detected objects. This function improves the work efficiency of adding markers on the rebar position for the relatively easily analyzable scan data (in which the detected objects has wide pitch and is located at shallow area) at the field.
) (1) Display the scan image on the main screen by performing a scan or reading the scan data from the file, then long tap [Mark] icon. Figure 6-8 Long tap [Mark] icon ) (2) The marker operation screen shown in Figure 6-9 appears. Tap [AutoMark] menu.
(3) AutoMark screen shown in Figure 6-10 appears. The marker group into which AutoMark function adds markers is shown at the top of the screen. Confirm the marker group is correct. To change the marker group, refer to Section 4.13.6 [Marker group setting] menu. Confirm the marker group. Figure 6-10 Confirmation of the marker group ) ) (4) Tap [Search from the start] when searching the rebar from the start of the scan data. When searching the rebar from the end of scan data, tap [Search from the end].
) (5) Tap [OK] to execute AutoMark function. To cancel Auto Mark function, tap [Cancel], then the screen returns to the main screen. Figure 6-12 AutoMark execution (6) A message “Automarker processing…” shown in Figure 6-13 appears.
(7) The message in the above step automatically disappears, and a message “AutoMark competed” is shown briefly , and the markers on the detected rebar are displayed on the main screen as shown in Figure 6-14. Here the cursor moves on the position of the marker number 1. Figure 6-14 AutoMark completion Note y The processing time of AutoMark function depends on the scan data. For the scan data of long distance, it takes around 10 seconds.
(8) When no rebar is detected and no marker is added in AutoMark processing, a message “Any markers not detected” appears a while and disappears automatically. Figure 6-15 Message when no marker is added.
6.4. Location notification function Location notification function is the function available during the scan and assists to show the rebar position by beeping and lighting the front and rear LED every time when the fixed cursor is superposed on each marker position. This function is similar to and can be used in addition to the AutoMark function which automatically analyzes the scan data, detects the position of the embedded object, and adds a marker on each of all detected objects.
) ) ) (1) Long tap [Parameter setup] icon to show the parameter setup screen. Then turn Location notification function to ON by tapping [Location notification] menu. Then tap [Return to the main window]. Figure 6-16 Turn Location notification function on (2) Execute the scan. Figure 6-17 Scanning (3) Move the sensor unit backward 10 mm and more. Then Location notification function is activated and adds markers automatically on the position of rebars.
Move backward 100 mm and more Figure 6-18 Moving backward 100 mm and more (4) Move the sensor unit forward and backward. Then Location notification function notifies the location of the rebar by beeping and lighting the rear LED when the fixed cursor superposes on a marker position. (When the scan direction is set to backward, this function lights the front LED light.) Rebar position is notified by beeping and lighting LED.
Figure 6-20 Message when no rebar is detected Note y In the state of Location notification activated, you can scan the concrete forward beyond the position where you moved the sensor backward to activate the function. After scanning a new part of the concrete, you can activate the function by moving the sensor backward 10 mm and more. All markers added previously by Location notification function are then removed.
6.5. Screen rotation ) You can rotate the screen 90 degrees and show the scan result as shown in Figure Figure 6-21by tapping [Screen rotate] icon. The horizontal display can show the scan result of 6 m distance on one screen and is helpful to grasp the entire rebar layout of the floor and ceiling.
6.6. Sort marker Sort marker is the function which re-numbers ID numbers of all registered markers from the search start point or from the search end point. Marker operations (deletion or addition) may make marker numbers not sequential which is inconvenient in making a detection report. By using this function you can easily get sequential ID numbers for all registered markers.
) ) (2) Long tap [Mark] icon to show the marker operation screen and tap [Sort marker] menu in the marker operation screen. Then the sort marker screen appears. Figure 6-23 Sort marker screen ) ) (3) Tap [Ascending order] to sort marker ID numbers from the scan start position. To sort from the scan end position, tap [Descending order]. Confirm the ● mark is attached to the selected order.
(4) Tap [OK] to return to the main screen. To cancel Sort marker, tap [Cancel], then the screen returns to the main screen.
6.7. Communication channel setup The communications channel sets the channel used by the wireless LAN communication between the sensor unit and Smartphone. When the wireless LAN communication between Smart phone and the sensor unit is not established or drops frequently, change the communication channel. The available channels are 0 to 11. When setting a channel 0, the sensor unit sets a channel randomly (The factory setting of the communication channel is 0.
6.8. Distance error correction In using this product, eventual wear of the tires may cause distance error. This product has the capability to measure the moving distance by measuring the rotation of the wheel. When the distance error occurs, perform the distance error correction in accordance with the following procedure. (1) (2) (3) (4) Scan the concrete of 1 m distance (actual length). Then stop the scan. Long tap [Parameter] icon to show the parameter setup screen.
6.9. Software version up 6.9.1. Smartphone application version up You can update the version for NJJ-200 application software by using Smartphone function. The function to update the application version depends on the model of Smartphone. For the details of the procedure, refer to the Smartphone manual. This section describes an example of the setup procedure of Smartphone for NJJ-200 application software version upgrade.
) ) ) ) ) Figure 6-27 Uninstall NJJ-200 application 144
(2) Copy NJJ-200 application software files of the new version from the PC to Smartphone by performing the following procedure. NJJ-200 application file is provided in the CD-R furnished with this product. By connecting Smartphone and a PC by using a USB cable (or a micro USB cable), Smartphone can be recognized and mounted as a removal data drive on the PC, then the file copy operation of drag and drop becomes available. By using this capability, you can copy NJJ-200 application from the PC to Smartphone.
(3) Install NJJ-200 application into Smartphone with the following procedure. a) b) At the security setting in Smartphone, set the setting so as to allow the installation of applications from the unknown sources. For the detailed procedure, refer to the manual attached to Smartphone. Example: Tap [Setting], [Device setting], [Lock & Security], and tap [Unknown source]. Activate the file management application (Contents manager, File commander, etc.) in Smartphone.
) ) ) From the previous page Long tap this button.
) ) ) ) ) From the previous page Figure 6-28 Application installation (3/3) 148
6.9.2. Software version up for Sensor unit You can update the software inside the sensor unit by using NJJ-200 application through the wireless LAN. The procedure is provided below. (1) Copy the sensor unit’s new software file from PC to Smartphone by performing the following steps. By connecting Smartphone and a PC by using micro USB cable, Smartphone can be recognized and mounted as a removal data drive on the PC, then the file copy operation of drag and drop becomes available.
(2) Update the sensor unit software You can update the sensor unit software with the following procedure. ) b) Turn on the sensor unit and boot up NJJ-200 application on Smartphone, then establish the wireless LAN communication between the sensor unit and Smartphone. Log tap [Parameter] icon, then tap [Version] menu. Then the version management screen appears.
c) Confirm the new software version, then update the version The version screen shows the current version of the sensor unit in the first message. (Figure 6-30 shows the example of the version “Ver1.0.0”.) Confirm that the version shown in the second message “You can update the sensor unit software to Ver1.02” is matched with the targeted version you want to update.
d) Confirm the updated software version Display the current software version with the same manner of Step c) after the wireless communication is established. Then confirm that the sensor software version displayed at the first message in the version screen is matched with the targeted version. (In the example of Figure 6-31,, it is Version 1.0.2.) If it is different from the targeted version, repeat the procedure from step a).
7. Battery pack and battery charger WARNING Do not use any battery pack other than the recommended battery packs. Doing so may cause fire, electric shock, or breakdown. Do not short-circuit the terminals of the battery charger or battery pack. Doing so could cause fire, explosion, or breakdown. Do not disassemble, modify, heat, or throw the battery pack on fire. Doing so could cause fire, explosion, or breakdown. Do not use any charger other than the dedicated battery charger to charge the battery pack.
7.1. Battery pack HST30002 The battery pack HST30002 is used only for the Handy Search and contains a rechargeable lithium ion battery. When the battery pack is fully charged, you can operate this product for about 7 hours. (1) Attaching/Detaching the battery pack For the procedure for attaching/detaching the battery pack to the sensor unit, refer to Sections 2.6 Attachment of the battery pack and 2.7 Detachment of the battery pack.
7.2. Battery charger PPT20003 The battery charger PPT20003 is exclusively used with the battery pack HST30002. When the battery pack is in the remaining capcity of zero state, charging will take about 240 minuts. Use the battery charger with the following procedure. (1) Mount the battery in the charger While pushing the battery pack against the charger, slide it in the direction indicated by the arrow.
8. Theory The principle of this product is basically the same as for general radars widely used at present. Electromagnetic waves are transmitted from the antenna toward the concrete as shown in Figure 8-1. The electromagnetic waves are reflected by an interface with the reflecting objects (e.g., rebars or cavities) whose electrical property is different from that of concrete. The waves are reflected back onto the surface of concrete and received by the receiving antenna placed near the concrete surface.
Velocity V of electromagnetic waves in concrete is obtained from the following formula: Ｖ＝ Ｃ εｒ （ｍ／ｓ） Where C: Velocity of electromagnetic waves in vacuum (in air) (3 × 108 m/s) εr: Relative dielectric constant of concrete (2 to 20 in the example) Distance D to the reflecting object is obtained from the following formula: １ Ｄ＝ ＶＴ（ｍ） ２ 8.1.
9. Maintenance and inspection WARNING Do not attempt to disassemble, modify, or repair this product. Doing so could cause fire, electric shock, or breakdown. 。 If the power cord is damaged (exposure of the core wire, open circuit failure, or break in the sheath), contact our nearest branch office (See Section 9), sales outlet, or service station for a replacement power cord. Use of a damaged power cord may cause fire or electric shock.
9.3. Troubleshooting This product's behaviors listed below are not always a sign of trouble. Please re-check this product again before asking for repair. Table 9-1 Troubleshooting (1/2) Behavior Check items and recommended actions The sensor unit cannot be turned on. Power LED does not light. • Check if the battery pack is mounted. →Mount a fully charged battery pack in accordance with Section 2.6 Attachment of the battery pack. • Check if the battery pack is exhausted.
Table 9-1 Troubleshooting (1/2) State When doing any file operations, a message “No SD card” appears. When tapping [File/Print] icon, any printer is not detected. When tapping [File/Print] icon, a message “Cycle the printer power” appears. When tapping [File/Print] icon, a message “Charge the printer battery.” Appears. When tapping [File/Print] icon, a message “No printing paper” appears. When tapping [File/Print] icon, a message “Printer error” appears. Continuous use warms the casing.
10. After sales service When this product does not work as expected, check this product again in accordnce with Section 9.3 Troubleshooting. If this product still malfunctions, stop using it, and contact our nearest branch office, sales outlet, or service station.
11. Disposal WARNING Before disposing of the used lithium ion battery, insulate the charging terminals by taping or the like. Otherwise, the battery could cause fire or explosion if short-circuited. 11.1. Disposal of the used battery pack The used battery pack (lithium ion battery) can be recyclable. Insulate the charging terminals by a non-conductive tape or the equivalence, and then bring it to the nearest store providing rechargeable battery recycling service.
12. Regulation Note 12.1. FCC/IC Caution Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 12.1 IC Caution This product complies with RSS-220 of Industry Canada "IC" Operation is subject to the following two conditions: (1)This product may not cause harmful interference, and (2)This product must accept any interference, including interference that may caused undesired operation of the product.
12.2. FCC Notice (for U.S. Customers): This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. Caution: y y Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
(e) The FCC/NTIA coordination report shall identify those geographical areas within which the operation of an imaging system requires additional coordination or within which the operation of an imaging system is prohibited. If additional coordination is required for operation within specific geographical areas, a local coordination contact will be provided.
13. Specifications 13.1. Handy Search NJJ-200 Item Search method Specifications Electromagnetic wave radar method Search object Rebar, Polyvinyl-chloride pipe, Cavity, etc. Search depth 5～300mm for concrete having a relative dielectric constant 6.
Output function Printing to the dedicated printer Wireless LAN IEEE802.11 b/g (2.
13.2. Battery pack HST30002 Item Specifications Battery Type Typical Capacity Typical Voltage Temperature Range at charging Temperature Range at discharging) Dimension Weight Lithium Ion Rechargeable Battery 2450mA/h 7.4 V 0～＋50 ℃ －10～＋60 ℃ Approx. 70×40×23 mm Approx. 115 g 13.3. Battery charger PPT20003 Item Specifications Power Output Voltage Output Current Time to charge fully Temperature Range Size Weight AC100～240V,50/60Hz DC8.4V 0.85A Approx. 240 minutes 0～＋40 ℃ Approx. 110×57×37 mm Approx.
14. Where to contact For inquiries and repair about this product, contact our main office below, the nearest branch office, sales outlet, or service station. y Customer service group 1-1, Shimorenjaku 5-chome , Mitaka-shi, Tokyo 181-8510, Japan TEL：0422-45-9015 y Seattle Branch 1011 SW Klickitat Way, Suite 201B, Seattle, WA98134, U.S.A. TEL：+1-206-654-5644 y New Jersey Office 1099 Wall Street West, Suite 141, Lyndhurst, NJ 07071, U.S.A.
Fujisawa bldg. 30-16, Ogikubo 4-chome Main Office Suginami-ku, Tokyo 160-8328, Japan Tel：+81-3-6832-1740 (Group 2, Business Department, Communications Product Division) Fax : +81-3-6832-1841 Mitaka Plant 1-1, Shimorenjaku 5-chome, Mitaka-shi, Tokyo 181-8510, Japan Tel.
