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Svantek SV 803 User Manual

Vibration monitoring terminal
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USER MANUAL
SV 803
VIBRATION
MONITORING
TERMINAL
Warsaw, 2023-04-06
Copyright © 2023 SVANTEK.
Rev. 1.02
All rights reserved.

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  • Page 1 USER MANUAL SV 803 VIBRATION MONITORING TERMINAL Warsaw, 2023-04-06 Copyright © 2023 SVANTEK. Rev. 1.02 All rights reserved.
  • Page 2 To download the most up to date user's manual please visit Svantek website at www.svantek.com. This user manual presents the SV 803 firmware revision 1.03. and the Assistant Pro software revision 1.0.4. WEEE Notice: Do not throw the device away with the unsorted municipal waste at the end of its life.

  • Page 3: Important Notes Before Use

    If so, warranty for Li-Ion battery is void. ✓ If SV 803 is planned to be stored for a long period of time, it is recommended to charge its battery to 60% capacity. The battery should be charged at least once per 6 months.
  • Page 4 SV 803 User Manual SAFETY AND ENVIRONMENTAL PROTECTION MARKING OF THE UNIT Marking on the Unit Explanation This product meets consumer safety, health or environmental requirements This product meets EU consumer safety, health or environmental requirements Do not throw into standard municipal waste containers. The user is...
  • Page 5 Axes are assigned to the channels of SV 803: the X axis is assigned to Channel 1, Y axis – to Channel 2 and Z axis –...

  • Page 6: Table Of Contents

    Keypad and LEDs ....................... 11 Instrument control ......................11 Waterproof housing ......................12 Battery removal and charging ..................13 Replacing geophones ......................15 Optional accessories for SV 803 ..................17 2.6.1 External power adapter ....................17 2.6.2 Solar panel ........................17 OPERATING SV 803 ..................
  • Page 7 SV 803 User Manual 4.4.2 Live View ........................28 4.4.3 Cloud .......................... 31 4.4.4 Files list ........................32 4.4.5 Instrument settings ..................... 33 4.4.6 Restoring factory settings ................... 34 Assistant Pro auxiliary functions and settings ............... 34 Instrument settings ......................36 Measurement settings –...
  • Page 8 Transportation and storage ....................88 Cleaning ..........................88 Troubleshooting ......................... 88 SV 803 TECHNICAL DATA ................89 APPENDIX D. DEFINITIONS AND FORMULAE OF MEASURED VALUES ... 92 Basic terms and definitions ..................92 Definitions and formulas of measuring results ............93...

  • Page 9: Introduction

    Additionally, SV 803 can measure Vibration Dose Value (VDV). One of the biggest advantages of SV 803 is its power efficiency. It can run up to 180 days on batteries. The terminal can be powered from internal battery, or outdoor DC power supply, for example, solar panel.

  • Page 10: Accessories Included

    Torque screwdriver SA 83 32 GB memory card SA 85 Key to unfasten geophone plugs Note: SV 803 is shipped in protective packaging. Please keep it for use when transporting your equipment. 1.3 A CCESSORIES AVAILABLE SV 110 Hand-held vibration calibrator (80Hz & 160Hz) including carrying case...

  • Page 11: 803 Description

    2.2 I NSTRUMENT CONTROL SV 803 can be controlled via the Bluetooth connection, 4G connection or USB. Each type of connection is supported by the special software: Assistant Pro mobile device application (see Chapter 4) that supports the Bluetooth connection, SvanNET web-service that supports the 4G connection with the Internet (see Chapter 5)

  • Page 12: Waterproof Housing

    Note: SVANTEK does not provide a SIM card for the instrument. It is necessary to purchase the SIM card with the data plan. If the instrument is intended for constant monitoring, choose service provider that ensures good reception at the measurement point.

  • Page 13: Battery Removal And Charging

    The battery must be removed from the instrument housing to be charged using the SV 83 mains charger. Note: If SV 803 is not powering through the WEIPU5 connector, before removing the battery, it is necessary to turn off SV 803.
  • Page 14 After inserting the battery, tighten the screw (not too tight) to secure the battery in the housing. The battery has: 4. contacts for connecting the battery with the SV 803 circuit, 5. six green LEDs showing the charged state, 6. TEST button for checking the battery charging state, 7.

  • Page 15: Replacing Geophones

    SV 803 User Manual 2.5 R EPLACING GEOPHONES Note: Before removing the geophones, it is necessary to turn off SV 803. Geophones must be placed in the geophone block according to the SV 803 position. If SV 803 is positioned horizontally (usually on the floor), the middle geophone must be of the vertical type.
  • Page 16 SV 803 User Manual To disconnect the geophone cable, put the key on the connector and lean towards the battery. To extract the geophone block: • unscrew the four bolts that fix the basement of the geophone block to the housing (1) and •...

  • Page 17: Optional Accessories For Sv 803

    SV 803 User Manual 2.6 O SV 803 PTIONAL ACCESSORIES FOR 2.6.1 External power adapter SB 274 is waterproof single output switching power supply which is characterised by: • Universal AC input / Full range (90 ~ 305V AC) •...

  • Page 18: Operating Sv 803

    If so, warranty for Li-Ion battery is void. Note: If SV 803 is planned to be stored for a long period of time, it is recommended to charge its battery to 60% capacity. The battery should be charged at least once per 6 months.

  • Page 19: Establishing 4G Connection

    Internet provider uses different APN. In this case the APN must be entered manually using the Assistant Pro application (see Chapter 4.6.6) or the SvanPC++ program (see Chapter 6.4). Note: In case the connection with SvanNET is failed, consult your local distributer or SVANTEK support group.

  • Page 20: Mounting The Instrument

    The instrument is turned on automatically after inserting the battery if it turns off automatically due to discharged battery. In other cases, you should turn on SV 803 manually by pressing two keys simultaneously until all the LEDs light up (for appx. 2 seconds).

  • Page 21: Measurement Run And Data Storage

    If SV 803 uses the 4G connection to SvanNET it can periodically transfers data files to the Cloud in the automatic mode (and, if configured, erases transferred files). The periodic way of connection, which is programmable, is used to prolong the battery life.

  • Page 22: Overload Indication

    The calibration of SV 803 should be performed by the authorised laboratory. Note: SV 803 is sensitive to shock. If dropped on a hard surface it must be recalibrated. Note: The recommended factory calibration interval is 12 months for this instrument to be confident in its continuing accuracy and compliance with the international specifications.

  • Page 23: System Check

    YSTEM HECK SV 803 has special mechanism for testing the measurement chain, so called System Check, by initiating an electronic pulse and then evaluating the response of the sensor signal. If System Check shows an error, it is displayed in the Assistant Pro application and the SvanNET web service.

  • Page 24: Application For Mobile Devices - Assistant Pro

    Note: Geophones positions in the geophone pack should match the SV 803 mounting (on the floor or on the wall) – see Chapter 2.5. If the geophones do not match the SV 803 position, the instrument icon starts blinking red.

  • Page 25: Description Of Icons

    SV 803 User Manual Note: You will not get access to the instruments that are under control of other users simultaneously running the Assistant Pro applications on another mobile devices. If you pair the instrument for the first time, the application will try to use the default PIN code (1234). If it doesn’t fit, you will be asked to enter the PIN code.

  • Page 26: Controlling The Instrument

    SV 803 User Manual Bluetooth – connected. The instrument performs measurement. The instrument does not perform measurement. 4G modem – not connected. 4G modem – connected to the Internet. 4G modem – connected to SvanNET. 4.4 C ONTROLLING THE INSTRUMENT The visible instruments appear on the Assistant Pro screen as a bar which can be extended when you tap on it.

  • Page 27: Auxiliary Commands

    SV 803 User Manual You may have access to these and other functions by long tapping on the instrument bar. The pop-up menu allows you to: • check the instrument Status, • Identify the connected instrument, • Connect or Disconnect the...

  • Page 28: Live View

    SV 803 User Manual If you tap Connect, your mobile device will start connecting via Bluetooth with this instrument. After successful connection this command will change to Disconnect. And vice versa. If you tap Rename Unit, the Device Name dialog box will be shown with the current instrument name which you can edit.
  • Page 29 SV 803 User Manual Below some view combinations are shown, among which are FFT or 1/3 octave spectra, time-histories of some results, current results values. Note: FFT or 1/3 octave spectra views depend on the chosen standard – see Chapter 4.6.1.1. FFT spectra appear for most standards based on the PPV and its dominant frequency analysis.
  • Page 30 SV 803 User Manual You can also rotate the screen to watch spectrum better resolution. To change the presented spectrum, long tap on the spectrum area and in the dialog box, choose the required spectrum. If you tap the marker icon, the Create...

  • Page 31: Cloud

    SV 803 User Manual icon, the instrument’s If you tap the current settings will be displayed. To edit them, tap Edit. If you wish to come back to the scanning/status screen just tap the icon. 4.4.3 Cloud Tapping Cloud, you will open the...

  • Page 32: Files List

    SV 803 User Manual 4.4.4 Files list The Files section presents the list of files created by the instrument on the instrument’s memory card. You can tap on each file and then download it to your mobile device (Get). When the file is downloaded, you can share it.

  • Page 33: Instrument Settings

    SV 803 User Manual 4.4.5 Instrument settings In the Settings section, you can configure the measurement and specific instrument settings. The settings are grouped in sections like Measurement, Logger etc., which includes sub-sections etc. The last item in such hierarchy consists of parameters that you can set, for example, Standard: PPV, BS-7385-2 etc.

  • Page 34: Restoring Factory Settings

    SV 803 User Manual 4.4.6 Restoring factory settings Factory settings can be restored if you tap , then tap Reset to factory settings and the Reset button in the Warning dialog box. 4.5 A SSISTANT RO AUXILIARY FUNCTIONS AND SETTINGS...
  • Page 35 SV 803 User Manual In the Settings screen, you can choose the application THEME (enable or disable the Dark Mode), choose the application LANGUAGE, enable or disable some PERMISSIONS: automatic connection with the visible instruments (Auto connect to instruments), add/delete the Files position in the pop-up menu (Show files),...

  • Page 36: Instrument Settings

    SV 803 User Manual Quick tips give you a brief overview of the Assistant Pro. 4.6 I NSTRUMENT SETTINGS The configuration menu (Settings) contains next sections: • Measurement – allowing you to configure measurement parameters, • Logger – allowing you to configure data storage in a logger file, •...

  • Page 37: Measurement Settings - Measurement

    SV 803 User Manual Measurement settings – Measurement 4.6.1 The Measurement section allows you to configure measurement parameters and includes tree sub-sections: • Application – allowing you to choose application standard and other associated parameters, • – allowing you to define weighting filters...
  • Page 38 SV 803 User Manual Building Type defines the criterion curve for most standards: L1, L2, etc. Vibration Type defines the element of the building DIN-4150-3 standard: Foundation, Top Floor, Floor Slab, Underground Cavities, Buried Pipework, LT Top Floor or LT Floor Slab.
  • Page 39 SV 803 User Manual 23/07/1986/2 French regulation text of 23 of July VEL 1 Measurement of unweighted PPV 1986. «classified installations» and its dominant frequency based on Unweighted FRENCH-B SHORT-TERM FFT analysis in the frequency band 4 – 100 Hz...
  • Page 40 SV 803 User Manual In case of the User standard, three Curve settings appear in the main menu allowing you to define/edit your own criterion curves, segment by segment (Criterion). To create new segment of the building type criterion curve for the User standard: 1.

  • Page 41: Configuring Data Storage - Logger

    SV 803 User Manual Programming instrument internal timer – Timer 4.6.1.3 The Timer function is used to programme the automatic start and stop of the measurement. If the instrument is turned off, the timer will turn it on and then start...
  • Page 42 SV 803 User Manual Configuring measurement results storage – Storage Setup and Storage Results 4.6.2.1 In the Storage Setup section, you can set: • recording step for velocity vibration results including FFT or 1/3 octave velocity spectra (Velocity Step): 1s..59s, 1m..59m, 1h, •...
  • Page 43 SV 803 User Manual Tapping the Splitting Time position, you can check splitting times to activate them. After activating the splitting times and confirming them with OK, the active splitting times will be shown on the Splitting Time bar. In the Storage Results section, you can...

  • Page 44: Configuring Alarms - Alarm

    When this limit is achieved the file is split. 4.6.3 Configuring alarms – Alarm SV 803 can generate SMS and e-mail notifications as well as visual and audible alarms when a certain Event occurs. You can configure alarms when either some PPV, RMS etc. values or some standard’s criterion curves (e.g., DIN 4150-3) or user’s criterion curves based on FFT, or...
  • Page 45 SV 803 User Manual Alarms recipients – Address Book 4.6.3.1 You can send alarms up to the 15 recipients from the Address Book. In the Address Book, you can define the recipient’s name, e-mail address and phone number. Configuring events – Event 4.6.3.2...
  • Page 46 SV 803 User Manual If the SMS Alarm and/or Email Alarm is enabled, SMS/Email Recipients position(s) appears allowing you to select recipients from the Address Book. The duration of the lamp alarm can be extended over the event duration if you set additional Lamp Hold Time in the Auxiliary section (see Chapter 4.6.5.1).
  • Page 47 SV 803 User Manual In the Event Duration position, you can set the duration of the Event from its start. For this period the instrument defines the maximum PPV values and dominant frequencies for X, Y and Z axis. In the Event Counter position, which appears for specified type of Source (RMS, RRMS, PPV, Vector), you can select a number of conditions that should appear before triggering the event and alarms.
  • Page 48 SV 803 User Manual • Ext. Bat. Low - low external battery condition; the alarm is generated when the low external battery condition is detected and the power from the external battery is cut off; the alarm is also generated when the low battery condition disappears •...
  • Page 49 SV 803 User Manual always triggering when 1s PPV in any axis exceeds the threshold level always triggering when RMS exceeds the threshold level RRMS always triggering when RRMS RRMS exceeds the threshold level Curve 1/2/3 always triggering when any...

  • Page 50: System Checking - Calibration

    SV 803 has special mechanism for testing the measurement chain, so called System Check, by initiating an electronic pulse and then evaluating the response of the sensor signal.

  • Page 51: Configuring Remote Communication - Communication

    SV 803 User Manual Configuring internal GPS – GPS 4.6.5.2 The GPS position allows you to switch on/off GPS, select the Time Zone, switch on/off synchronization with the RTC and set the synchronization time. If RTC Synchronization is On, the...
  • Page 52 SV 803 User Manual Configuring 4G modem – Wireless transfer 4.6.6.2 In the Wireless transfer sub-section, you can switch Off the 4G modem, or choose mode (Modem): Continuous Periodically active. In the continuous mode, the modem is active all the time. However, this mode is...

  • Page 53: Internet Service Platform - Svannet

    By default, SV 803 is configured for the periodical connection with SvanNET. After station is turned on, the 4G modem will work for two hours and then will go into the sleep mode. If you wish to wake the 4G modem up, press the key on the SV 803 keypad and after a while SV 803 will be connected to SvanNET again.

  • Page 54: Remote Communication Service - Stations

    SV 803 User Manual SvanNET includes the standard function - Remote Communication Services available for all the SvanNET users and the optional extension - Automatic Monitoring Services offered via a license. Remote Communication Services maintain remote connection with the monitoring devices and service includes status alarms (e.g., battery, memory), remote access to device settings and measurement files stored in the...
  • Page 55 SV 803 User Manual Project status: this icon appears when this station is involved in the project. When you click this icon, the project name and link to it will be displayed. Alert status: blue - everything is OK, red – unregular event is happening.

  • Page 56: Status View

    SV 803 User Manual 5.2.1 STATUS view In the STATUS view you can check the station status and: configure status alarms. • switch the modem mode (Power Saving Mode Override Switch), • enable e-mail notification that the station is connection with SvanNET (Notify when station comes online), •...
  • Page 57 SV 803 User Manual 2. click OK and new condition will be displayed in the CONDITIONS area. 3. click the E-mail button to enter/edit e-mail recipients. 4. click the Assign button to refer alarm to the station(s). 5. Made selections are displayed in the ACTIONS and MEASUREMENT POINTS areas.

  • Page 58: Certificates Dialog Box

    SV 803 User Manual The Status sources have next meanings: • Mains Trigger Value: Off – alarm is generated when the system detects loss of power supply Trigger Value: On – alarm is generated when the system detects appearance of power supply •...

  • Page 59: Log Views

    SV 803 User Manual 5.2.3 LOG views There are three station logs, that register system events, connections and data transfer: • Status log which registers power source type and charge level, memory free space, GSM signal quality, system check history and GPS information.

  • Page 60: Web Interface View

    SV 803 User Manual • Data transfer log which registers history of data transfers (uploads). In the upper line, you can: refresh the log, select the required period of records to be displayed and select the period for data transfer presentation: Monthly, Weekly, Daily or Hourly.

  • Page 61: Status View

    SV 803 User Manual 5.2.4.1 Live data view The Live data view displays the map with the device location and results measured in three channels which are refreshed every second: 1. Instantaneous velocity results measured/averaged by 1-second period and 2. Current averaged velocity results in the three channels for the INTERGRATION TIME in the range [1s ÷...
  • Page 62 SV 803 User Manual 5.2.5.1 Configuration views The Configuration view consists of several sections that enable configuring of measurement parameters (Measurement setup), measurement results saving (Storage), files exporting in the CSV format (CSV export), recording of the measured signal in the WAV format (Wave recording), station alarms based on events (Event trigger), periodical system check (Calibration), auxiliary parameters (Auxiliary) and upgrade the firmware (Firmware upgrade).
  • Page 63 SV 803 User Manual There are two ways to create a curve – using a table or a graph. Both ways complement each other. First, choose the curve you wish to create or modify (Curve 1, Curve 2 or Curve 3).
  • Page 64 SV 803 User Manual If you wish to change the position of the previously created point, you can change its coordinate either using the table or the graph. You can change the Velocity units from µm/s to mm/s clicking the Units button.
  • Page 65 SV 803 User Manual Note: All measurement results and waveform are saved in the files with automatically defined names. You can define both file names manually through the Assistant Pro or SvanPC++ interface (see Chapters 4.6.2.1, 4.6.2.2 and 6.3.4). In the CSV export section, you can enable the export of results in the CSV (Comma Separated Values) format.
  • Page 66 SV 803 User Manual In the Wave recording section, you can: 1. set the Mode of the recording: Disable, Continuous (signals are recorded from the measurement start till the measurement end) or On event (signals are recorded during the event period), 2.
  • Page 67 SV 803 User Manual To add new event, click + Add event. The new Event section with the CONDITIONS and Actions fields will appear. To edit the event name, click After editing the event name confirm it clicking or reject it...
  • Page 68 SV 803 User Manual Threshold trigger condition The Threshold type trigger activates the event when the measured value (Source) crosses above the threshold level. Select in the Source list the result which will be compared with the threshold level: PPV, RMS, RRMS (rolling RMS), Vector or Curve.
  • Page 69 SV 803 User Manual System trigger condition The System type trigger activates the event when some of the system conditions appear. You can select several or all conditions presented in the SYSTEM CONDITION configuration box (see description in Chapter 4.6.3.2).
  • Page 70 SV 803 User Manual After occurrence of the event, actions will be performed during the time the event is active, at its beginning or at the end depending on the action type. The Alarm lamp action starts an alarm signal at the...
  • Page 71 SV 803 User Manual After confirmation (OK) the pop-up windows close, and the selections will be presented in the lines of the appropriate Actions buttons. Address book The ADDRESS BOOK pop-up window appears in the SMS and E-mail alarm actions pop-up windows after clicking the +Add recipients.
  • Page 72 In the Firmware upgrade section, you can upload new firmware on the instrument’s SD-card and perform upgrade process remotely. Before upgrading it is essential that the proper firmware file is downloaded from SVANTEK website to your PC. To upgrade the firmware: 1.

  • Page 73: Storage View

    SV 803 User Manual 5.2.6 STORAGE view The file storage window presents a list of files saved in the instrument’s SD-card memory. The list includes only files from a single directory on the memory card and it initially shows the content of the current working directory.

  • Page 74: Automatic Monitoring Services - Projects

    WYSIWYG (What You See Is What You Get). Configuring panels, formatting, and preparing reports is described in detail in SvanNET User Manual. This manual describes only parts related to the SV 803 operation. 5.3.1 Viewing time-history of measured results – Charts panel The Charts panel presents time-histories of some results.

  • Page 75: Viewing Events - Events Panel

    SV 803 User Manual Point the mouse on the plot you can read the Pointer coordinates in the legend box. Clicking on the plot you can put the cursor and read the Cursor coordinates in the legend box. 5.3.2 Viewing events – Events panel The Events panel presents the list of events (left section) and details of selected events (right section).
  • Page 76 SV 803 User Manual...

  • Page 77: Printing Reports

    SV 803 User Manual Clicking the icon on the Events panel, you can change the Panel title and adjust presentation of events details: 1. Select time range observation events (Select time range): Default period (Default time range), Last hour, Last day, Last month, Last year, Last x period, Fixed period.

  • Page 78: Data Post-Processing - Svanpc

    The SvanPC++ software for the PC enables configuring instrument settings and provides also wide spectrum of data post-processing and reporting functionalities. SV 803 needs to be connected to the computer running SvanPC++ either by the USB cable or the internet. In the last case SvanPC++ should be supplemented with the Remote Communication module.

  • Page 79: Downloading/Uploading Files

    SV 803 User Manual 6.3.1 Downloading/uploading files Arrows in between are used to download files from the instrument to the PC and upload files from the PC to the instrument. PC files Instrument files 6.3.2 Opening files Double click the file name to open the Viewer module that enables different tools for data viewing. This module...

  • Page 80: Changing Working Directory

    The Setup file editor is available in two modes: Standard and Extended. The settings available in the Setup file editor correspond to those available via the SV 803 instrument’s interface. Setup file editor in the Standard mode allows for viewing the settings that are most likely to be modified, presented in a simple and intuitive way.
  • Page 81 Parameters In the Extended mode, all the settings of SV 803 are visible and available for editing. The list of settings, located at the left-hand side of the window, can be displayed in a tree view or a list view. You can switch the view using the buttons located in the lower part of the window.

  • Page 82: Configuring Wireless Connection

    The internet connection can be configured via SV 803 instrument wizard. For this: 1. In the SV 803 instrument wizard dialog box, click the Remote Connection using SvanNET button. 2. In the Remote Connection Wizard dialog box, type the Station name, Station description and APN of the mobile operator.

  • Page 83: Building Vibration View

    Rxx, where xx is a number, and extension WAV. One Rxx file includes waveform signal recorded for one detected event during the period set in SV 803 as a PreTrigger + Duration + Post Trigger. Note: While retrieving data from SV 803 remember to retrieve all files created during a measurement.

  • Page 84: Fft Approach

    6.5.2 FFT approach In case of the FFT approach, the Building vibration view presents a table with SV 803 settings and data for the time history, events or alarms and Criterion curves with measurement results for three axes (X, Y, Z) as a points.
  • Page 85 SV 803 User Manual If you press the Events list button located next to the Alarm/Event/Time history selector, the new Alarms view will appear. This view presents the table with all events detected. You can display two tables, Building vibration and Alarms side by side. If you change the row in the Alarms table...
  • Page 86 SV 803 User Manual To create a report, press the Send to MS Word button at the left side of the view Toolbar...

  • Page 87: Maintenance

    7.1 K EEPING DRY INSIDE Keep SV 803 dry inside If suspicion of any moisture inside the housing, find the cause, dry it out. If sent to repair after damage from moisture, please remove the battery to minimize damage. 7.2 E...

  • Page 88: Preservation Of Internal Batteries

    Note: If SV 803 is planned to be stored for a long period of time, it is recommended to charge its battery to 60% capacity. The battery should be charged at least once per 6 months.

  • Page 89: 803 Technical Data

    SV 803 User Manual SV 803 TECHNICAL DATA Parameter Value/ Description Physical data Dimensions 163 x 128 x 115 mm (without accessories) Weight Approx. 3 kg including battery Approx. 3 kg including battery and mounting plate Leakproof classification IP 67 according to EN 60529 (1997) + A1 (2000) Working ambient -10C do +50C (Ambient air temperature, without direct sunlight).
  • Page 90 SV 803 User Manual External DC input voltage: 5 V to 28 V External DC power 15 V (waterproof) supply SB 274 Solar panel (option) OCV voltage up to 28 V Note: Size and power of the panel depend on the climate of the area where the station operates.
  • Page 91 SV 803 User Manual • Position Accuracy (horizontal): < 2.5 m CEP (autonomous), • Tracking Sensitivity: -163dBm • Time accuracy: <1µs (directly depends on position deviation) Measurement characteristics Standards DIN 45699-1:2020-06; ISO 4866:2010, Class 1; IEC 61260:2014, Class 1 Meter Mode...

  • Page 92: Appendix D. Definitions And Formulae Of Measured Values

    SV 803 User Manual APPENDIX D. DEFINITIONS AND FORMULAE OF MEASURED VALUES Basic terms and definitions �� current time period of the measurement in seconds. reference duration of 28 800 seconds (8 hours) �� exponential time constant in seconds with the time-weighting 125 ms.

  • Page 93: Definitions And Formulas Of Measuring Results

    SV 803 User Manual Definitions and formulas of measuring results The instrument calculates the vibration measurement results for two profiles, one for the velocity vibration and another for the acceleration vibration. The calculation flow diagram for one profile is presented below:...
  • Page 94 SV 803 User Manual Root mean square result 2 ⁄ �� ( �� )  ���� ������ = ( ∫ �� acceleration signal for the axis X, Y or Z ���� �� that is frequency- and time-weighted and averaged for a stated time interval T.

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