Instruction Manual NTN PORTABLE VIBROSCOPE Model No.
Revision history Revision First edition Date December 13, 2019 Content of revision Apple, and the logos of Apple, iPad and iTunes, are the trademarks of the Apple Inc. registered in the United States and other countries. App Store is a service mark of the Apple Inc. iOS is a trademark or a registered trademark of Cisco in the United States and other countries. "Wi-Fi" is a registered trademark of Wi-Fi Alliance.
Contents 1 2 Introduction.................................................................................................................. 7 1.1 Outline and features of this device .............................................................................................7 1.2 Necessary equipment ................................................................................................................7 1.3 Sales and restrictions in use .......................................................
5 6 7 Specification .............................................................................................................. 40 5.1 Outside dimensions..................................................................................................................40 5.2 Main specifications ...................................................................................................................41 5.3 Bearing parameters and bearing vibration frequency...................................
1 Introduction Thank you indeed for purchasing the NTN PORTABLE VIBROSCOPE (referred to “this device” afterward) this time. Please read this Instruction Manual well to use this device correctly before you use it. Moreover, please keep this Instruction Manual carefully in order to refer to it at any time if necessary. 1.1 Outline and features of this device This device is a simple type vibroscope*1 excellent in portability and operability.
1.6 Disclaimers For operation of the related systems such as software and hardware of this device, the scrupulous care is taken. However, our company doesn't guarantee at all that there is neither a misprint nor a bug in the program, that there is no error in the bearing data, or that there is no inconvenience which does not conform to the usage purpose of users. Moreover, there is a possibility that an error is caused in the measurement result due to the difference in measuring method.
2 Before using this device 2.1 Safety precautions Please always follow the content of this Instruction Manual. This device is manufactured based on the design that considers customer's safety, but please use it after understanding the following notes very well. Please always follow using conditions such as temperature, humidity etc. described in the Instruction Manual when you use this device.
2.1.3 To use this product safely Table 2.2 Instruction on safety (Warning) Warning A person who has a pacemaker shall not use or approach to this device. The pacemaker might malfunction because this device and tablet generate electric wave. This device complies with IP65 protective class, but it shall not be used in places exposed to strong jet liquid, near the combustibles and in the corrosive or flammable atmosphere. There is a possibility of causing an electric shock, fire or breakdown.
Detach the battery from the measuring instrument when you do not use this device for a long time. The measuring instrument might be damaged by the battery liquid leakage etc. Moreover, the battery is kept in the device for a long time, there is a possibility not to charge by using circuit on the device. When the battery can not be charged by keeping it in the device, use battery charger for Ni-MH battery. 2.
2.3 Components The packing box contains this device, the magnet, the USB cable 1 piece for each, Quick Instruction Manual, Inspection Report, Warranty 1 sheet for each, and 2 chargeable batteries of size AAA. Figure 2.1 Quick Instruction Manual Packing box Inspection Report Figure 2.2 Components Please inquire to our company if anything is missing.
3 Handling of this device 3.1 Name of each parts of this device Strap hole (back) USB connector lid Power supply button Nameplate (back) Serial number SSID LED display Vibration sensor Mounting screw (bottom) Screw hole: M6 x P1.0, Depth: 4mm Figure 3.1 Table 3.
3.2 How to put in and detach chargeable battery Use 2 chargeable batteries of size AAA (Ni-MH battery) for this device. Moreover, do not use mixed batteries of old/new ones or different types. There is a possibility of causing the breakdown. Insert the battery into this device with correct + - poles. Detach the battery of the measuring instrument when you do not use this device for a long time. The measuring instrument might be damaged by the battery liquid leakage etc.
3.4 Rotational speed and direction of rotation This device may not be able to perform FFT analysis when rotational speed of the bearing is extremely low or extremely high from the characteristic reason. Moreover, this device is applicable only for the bearing with inner ring rotation for the detection of abnormality and the abnormality judgment cannot be performed for the bearing with outer ring rotation. 3.5 Measuring method Please note the following points when you set up this device.
3.5.4 About measuring position Please fix this device to the place where any part does not exist that possibly attenuate or amplify the vibration such as preload spring or ball bush between this device and bearing to be measured, or where the number of parts is as small as possible. When front side bearing is to be measured, fix the device at this position. When rear side bearing is to be measured, fix the device at this position. Front side Figure 3.6 3.5.
4 Operation for measurment The measurement can be performed by operating application display screen on the tablet. 4.1 Preparation of application Here, the method setting up the application is explained on the assumption that the customer has Apple ID. The flow installing the application is as follows. (1) Connect iPad to the Internet. (2) Activate App Store on iPad. (3) After the activation, tap the icon for search and input “NTN” in the search window.
4.2 Wi-Fi connection setting Because it is necessary that the Wi-Fi connection between iPad and this device has been established before measurement is performed, turn on the power of this device and tap the “Wi-Fi” button at the lower left on application home screen. Moreover, Wi-Fi connection can also be established by tapping “Wi-Fi” button at the upper left on the screens of " Measure without Meas. Point " and "Measure with Meas. Point". Figure 4.
Select "Wi-Fi" from the system setting screen. Figure 4.4 System setting screen Select the network of this device that is activated from the displayed network. SSID that begins with "NTN" is the network ID of this device. After selection, return to the Wi-Fi setting screen and confirm that the connection status changes to “Connected”, and tap the “Done” button. NTN-XXXXXX Figure 4.5 Figure 4.
4.3 Setting When the measured data is judged or saved, it is necessary to register the measurement point information. Moreover, when judging the bearing not registered in the data base, a special bearing or other company’s bearing etc., it is necessary to register the bearing parameter beforehand. From “setting” botton, measurement point information and bearing information can be registered and edited newly. When the following "4.
(1) New registration of measurement point Tap "Edit" button on the screen of “List of Meas. Point”. Figure 4.9 List of measurement point Tap "+" button on the upper left of the screen. Figure 4.10 Selection of new editing After adding required number of measurement points, tap "Done" button. Added measurement points (Name changes each time.) Figure 4.
To register information on the added measurement point, tap the measurement point name and edit the content. OA judgment criterion value means items which need Figure 4.12 Edit of information of measurement point 1. Adopting plant name, equipment name, measurement position etc. as the measurement point name makes the history management easy. 2. Select the bearing parts number without fail. It is impossible to measure if it is not selected. 3.
5. FFT judgment criterion value should be based on 1.000m/s2 and it is changed in accordance with the equipment situation. 6. Select the envelope ON or OFF in accordance with the measurement condition. Select envelope “ON” for vibration measurement of bearings and gears etc., and envelope “OFF” for the measurement of unbalance etc. After necessary information is input, tap "OK". New measurement point is registered.
(2) Copy of measurement points By pressing and holding the measurement point name to be copied, Delete, Edit and Copy menus are displayed and the information on the measurement point which has been registered can be copied. Figure 4.15 4.3.2 Delete, Edit and Copy menus of measurement points and the copied measurement point Edit bearing specification When a bearing parts number other than ones that have been registered beforehand is to be registered, it is used.
Tap "+" on the upper left of the screen. Figure 4.18 Addition of bearing parts number After adding the required number of bearing parts numbers, tap "Done". Added bearing parts number (Name changes each time.) Figure 4.
To register the information to the added bearing parts number, tap the bearing parts number to edit the content. Figure 4.20 Registration of bearing information As the bearing information, input the bearing number and either of bearing parameters or coefficients. When bearing parameters are input, tap “Calculate each coeff.” and obtain the coefficients without fail. After inputting, tap “OK”.
4.4 Measure without measurement point This is a mode that operates as a general vibration measuring instrument. The judgment other than ISO-10816, history display and measurement data saving cannot be performed, but the vibration measurement can be performed easily without setting of measurement point information. (3) (1) Tap "Measure without Meas. Point" from the Select Envelope ON-OFF, maximum frequency and the ISO-10816 judgment criterion, home screen of the application. and tap the "Start Meas.
(5) When tapping "FFT" of the result screen of (7) Both of FFT spectrum and time waveform, Measure without Meas. Point, FFT spectrum is after tapping the cursor 1 or cursor 2 at the displayed. When tapping the frequency button bottom of the graph and swiping them on the at the bottom of the screen, the frequency graph, the cross cursor moves. By releasing range of the graph can be specified. the finger from the screen, the position is established.
4.5 Measure with measurement point This is a mode in which the tendency management can be done by setting measurement point information. Judgment with the set judgment criterion, judgment of ISO-10816, save of measurement result and history display can be performed.
(5) When the measurement is completed, the (6) When the "FFT" button on the bottom left of the acceleration and its frequency of the top 10 of measurement result screen is tapped, FFT the FTT analysis result, as well as judgment spectrum is displayed. When the frequency result based on the set judgment criterion button at the bottom of the graph is tapped, the value, OA frequency range of the graph can be specified.
(9) If there is a saving history of data for the selected measurement point on the screen of Measure with Meas. Point, "FFT Trend", "OA Trend", and "FFT cf." at bottom of the screen become active and the display of the history is possible. Figure 4.35 Time waveform screen (waveform after envelope processing) (8) When saving the data, "Save" at the bottom right of the measurement result screen is tapped. Figure 4.
(11) The tendency management of the (13) Both of FFT spectrum and time waveform, acceleration, speed and displacement of the after tapping cursors 1 and 2 at the bottom of vibration can be performed by using the OA the graph, swiping them on the graph moves Trend. the cross cursor, and by releasing the finger, the position is established. The displayed cursor coordinates are the coordinates of the cross intersection of cursors 1 and 2 and the difference.
4.6 History Tapping “History” on the home screen of the application shows the selection screen of the measurement point, and the saved measurement data can be read. Figure 4.42 Selection of “History” Figure 4.43 Selection of measurement point name By selecting the measurement point name, the measurement data is displayed in the list in the order of saving date and time. By tapping the desired measurement date and time, the measurement result screen is displayed.
4.7 CSV output of measurement data The measurement data of each measurement point can be converted into CSV format. 1) Tap the “History” on the home screen of the application. 2) Press and hold the measurement point name desired to output from the displayed list, “Export to CSV” button is displayed. Figure 4.46 Home screen Figure 4.47 CSV output screen 3) Tap displayed “Export to CSV” button. When the following screen is displayed, CSV file has been output in the iPad memory. Figure 4.
4.8 Changing method of vertical axis maximum value of graph The maximum value of the vertical axis on the graph displayed on the tablet can be changed. (1) When tapping the scale of vertical axis on the graph, the screen where Ymax can be input appears. Figure 4.49 Graph before change Figure 4.50 Ymax input screen Figure 4.51 Graph after change (2) Besides the time waveform graph, a similar change is possible even for the FFT graph and the trend graph.
4.9 Notes input function on measured data screen The notes can be input to the measured data screen. (1) Because there is a notes column at the bottom of the table where the measurement result is displayed, an arbitrary character can be input by tapping its column. (2) Irrespective of the number of characters, they can be input either with half-width or full-width forms without limitation. Figure 4.52 Notes input column Figure 4.
4.10 Delete of mesurement data on specific date and time Saved measurement data on specific date and time can be deleted. After tap “History” button and select measurement point name, deletion screen is displayed by pressing and holding specific measurement date and time. Figure 4.54 Home screen Figure 4.56 Figure 4.
4.11 Import data into PC The measurement data saved in the tablet can be imported into a PC by using iTunes. Here, it is explained on the assumption that iTunes has been installed in the PC you have. (1) Connect PC and the tablet with a cable. (The customer must prepare Apple genuine cable.) (2) Activate iTunes on the PC. (3) When the connected tablet is recognized, the following screen is displayed. Then, tap the icon of the device that is displayed under the menu bar. Figure 4.
(5) When selecting "NTN PORTABLE VIBROSCOPE" from the application on the displayed file sharing screen, the document screen is displayed. Figure 4.59 File sharing screen and document screen (6) The measured data that is output as CSV file from the application is in the folder of the measurement point name on the displayed document screen. Then, the window to select location for saving the file is opened by selecting the folder and pressing “Save to…”.
5 Specification 5.1 Outside dimensions The external dimensions are described in the figure below. (mm) Figure 5.
5.2 Main specifications The main specifications of this device are described as follows. Table 5.1 Main specifications NTN PORTABLE VIBROSCOPE Wireless LAN: IEEE802.
5.3 Bearing parameters and bearing vibration frequency 5.3.1 Bearing parameters The bearing parameters which need to calculate the vibrational frequency of the bearing are rolling element pitch circle dp (mm) of bearing, diameter Dw (mm) of rolling element, number Z (pcs) * of rolling elements, contact angle α (°) of bearing. The positions for the dimension of main bearing parameters are as follows. *It is the number of rolling elements for each row for the double row bearings.
5.3.3 NTN bearing registered in application The bearing parameters which is necessary for the abnormality judgment of the bearing are registered in the application. The bearing parts numbers (as a guide) registered in the application are as follows. When selecting the bearing to be measured, if you do not know the bearing parts number to be registered, please inquire to our company.
6 Regulatory compliance information 6.1 USA – Federal Communications Commision (FCC) FCC ID: 2AVEZHV0002 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.
7 After-sales service 7.1 NTN PORTABLE VIBROSCOPE product warranty Warranty and free repair provision consent form Model No. DAT-HV0002 SSID (Attach a seal) Warranty period 1 year from date of purchase Date of purchase Name Customer information 〒 Address Phone number Distributor Distributor information 〒 Address Phone number NTN Corporation 〒550-0003 1-3-17 Kyomachibori, Nishi Ward, Osaka City, Osaka Prefecture TEL: 06 (6443) 5001 URL: http://www.ntn.co.
Free repair provision 1. NTN repairs this product for free in accordance with this provition if this product is breakdown during warranty period by using normally in accordance with instruction manual. When you request free repair, please contact to distributor you purchased this product. 2. NTN basically repairs this product for a fee even during warranty period in the following case.
7.2 Inquiries Please inform the following office about an inquiry and technological consultation concerning the product.
