4 FUNCTIONS OF THE INSTRUMENT - FUNCTION 4.1
Contents
1. icon indicates that the instrument is in the measurement process In order to change the sensitivity the measurement must be finished oa a o CALIBRATION tib CALIBRATION tib SENSITIVITY SENSITIVITY 14 amm 1 68niems CALIBRATION FACTOR CALIBRATION FACTOR C dE C 28 86 CALIBRATION windows with SENSITIVITY positions not accessible 2 Set the sensitivity of the accelerometer taken from its calibration card using the lt lt gt lt gt gt push buttons and then press the lt ENTER gt one The calibration factor is calculated automatically in the relation to 10 0 mV ms The confirmation of the introduced SENSITIVITY is made by pressing the lt ENTER gt push button For the sensitivity of the accelerometer greater than 10 0 mV ms the calibration factor is negative o CALIBRATION tib SEMSITIVITY CALIBRATION FACTOR C 8 8B CALIBRATION window during setting the sensitivity greater than 10 0 mV ms 4 4 SVAN 958 USER MANUAL For the sensitivity of the accelerometer smaller than 10 0 mV ms the calibration factor is positive o CALIBRATION tib CALIBRATION FACTOR C 9dB CALIBRATION window during setting the sensitivity smaller than 10 0 mV ms The lowest applicable value of the sensitivity to be introduced is equal to 10 0 uV ms it conforms to the calibration factor equal to 60 0 dB and the greatest one 10 0 V ms calibration factor equal to 62. which is usually stated in the calibration certificate of the unit the value of the CAL LEVEL set by the producer of SVAN 958 is equal to 114 dB 3 Switch on the calibrator and wait ca 30 seconds before starting the calibration measurement 4 Start the calibration measurement by pressing the lt Start Stop gt push button 4 5 SVAN 955 USER MANUAL The measurement time is set to 5seconds with 5seconds delay During the calibration measurement the lt ESC gt and lt Pause gt push buttons do not operate but it is possible to stop the measurement using the lt Start Stop gt one It is not recommended to stop the calibration measurement before programmed 5 seconds period oOo mj CALIBRATION lt 4 CALIBRATION LEWEL 114 808 a o o CALIBRATION CALIBRATION 43 CALIBRATION 43 CHAHHEL 1 CALIBRATION LEWEL CHAHWHEL 2 YY MEASUREMEM 1i4 HdE lt Start gt CHAHHEL 3 CALIBRATION HISTORY CHAHHEL 4 calibration iF 2 8 L CALIBRATION FACTOR CALIBRATION FACTOR C 4 dB C 4 dB o CALIBRATION i4 CALIBRATION windows during the calibration measurement Waiting for the start of the measurements the DELAY is counted down on the display After the end of the measurement its result is displayed on the display in the bottom line It is recommended to repeat the calibration measurement few times The obtained results should be almost the same with 0 1 dB difference The reasons for the unstable results are
3. 0 0 dB In order to return to the CALIBRATION window the user has to press the lt ESC gt push button o CALIBRATION tib SEMSITIVITY a CALIBRATION tib SEMSITIVITY CALIBRATION FACTOR C 68 dE CALIBRATION FACTOR C 68 dE a b CALIBRATION windows with the lowest possible sensitivity and the greatest calibration factor a and the greatest sensitivity and the lowest calibration factor b A Note The calibration factor is always added to the results of the vibration measurements and the analysis of the vibration signal 4 2 2 Calibration by the measurement Calibration BY MEASUREMENT in the case of acoustic signal The calibration for the sound measurements path MENU FUNCTION CALIBRATION CHANNEL x BY MEASUREMENT can be done in the following way 1 Select the calibration by measurement highlight the BY MEASUREMENT text from the CALIBRATION window and press the lt ENTER gt push button 2 Attach the acoustic calibrator SV 30A or equivalent 114 dB 1000 Hz to the microphone of the instrument A Notice It is also possible to use the pistonohone which generates the signal ca 124 dB or different type of acoustic calibrator dedicated for 2 microphones In any case before starting the calibration measurement the user has to set by means of the lt lt gt lt gt gt push buttons the level of the signal generated by the given calibrator CAL LEVEL position in BY MEASUREMENT window
4. STORY CHAHHEL 4 CALIBRATION FACTOR C amp 8dB CALIBRATION windows with the selected calibration mode and after entering this mode 2 Attach the vibration calibrator to the instrument s accelerometer 3 Switch on the calibrator and wait approximately 30 seconds before starting the calibration measurement 4 Start the calibration measurement by pressing the lt Start Stop gt push button The measurement starts after 5 seconds delay The measurement time is also predefined to 5 seconds During the calibration period the lt ESC gt and lt Pause gt push buttons do not operate but it is possible to stop the measurement using the lt Start Stop gt push button Waiting for the calibration measurement to begin a DELAY is counted down At the end of the measurement the result is displayed on the display in the bottom line o oOo a o CALIBRATION i4 CALIBRATION i4 CALIBRATION i4 CALIBRATION LEWEL CALIBRATION LEWEL CALIBRATION LEWEL 14 6 mise 14 6 mise CALIBRATION DELAY 2 685 CALIBRATION FACTOR CALIBRATION FACTOR C 8 4d6 C amp 8dB CALIBRATION windows during and after the calibration measurements The calibration procedure should be repeated a few times to ensure the integrity of the calibration The obtained results should be almost identical with 0 1 dB difference The reasons for unstable results are as follows e the calibrator is not properly attached to the instrument e there are external di
5. STORY window opened with the last calibration result b The opened CALIBRATION HISTORY window contains list of last calibration records Each calibration is described by the way the calibration was done BY SENSITIVITY or BY MEASUREMENT the date and time of the performed calibration measurement the obtained calibration factor CAL FACTOR and the calibration result a oa CAL HISTORY 413 CAL HISTORY cib BY SENSITIVITY BY SENSITIVITY 61 JAN 2867 81 82 64 i JAH 2687 61 81 46 CALIBRATION FACTOR CALIBRATION FACTOR 20 dB 4 AdE C 1eerl rms 2 C 18 mems CALIBRATION HISTORY windows with the last calibration records In the case when the calibration measurements were not performed the CALIBRATION HISTORY window does not contain any records The window is cleared after the CLEAR SETUP operation ao oa CAL HISTORY 43 CAL HISTORY 43 Calibration history Calibration history is empty is empty CALIBRATION HISTORY windows for the first 1 and fourth 4 channel 4 8
6. SVAN 958 USER MANUAL 4 FUNCTIONS OF THE INSTRUMENT FUNCTION In order to select the FUNCTION list one has to press the lt Menu gt push button select by means of the lt A gt lt v gt or lt lt gt lt gt gt push buttons the FUNCTION text and press the lt ENTER gt The FUNCTION list contains two elements MEASUREMENT FUNCTION and CALIBRATION windows The list is closed and the instrument returns to the presentation mode after pressing the lt ESC gt push button oa oa FUNCTION FUNCTION SE eee aan FUNCT LOH MEASUREMENT FUNCTION a HEHU UHCTIOH HPUT CALIBRATIOM DISPLAY FILE SETUP a LAUSILIARY FUNCTIONS b Displays with the main list with FUNCTION text selected a and FUNCTION window with MEASUREMENT FUNCTION selected b and CALIBRATION selected c 4 1 Measurement functions of the instrument MEASUREMENT FUNCTION In order to select the required function the user has to enter the MEASUREMENT FUNCTION window to select the MEASUREMENT FUNCTION text using the lt A gt lt W gt or lt lt gt lt gt gt push buttons and press the lt ENTER gt one when this text is displayed inversely After entering the MEASUREMENT FUNCTION window the set of the available functions appears on the display LEVEL METER 1 1 OCTAVE 1 3 OCTAVE DOSIMETER FFT RT60 The special character marks currently active function a ao MEASUR MEASUR FUNCTI LEWEL METER Ea LELEL METER MEASUREMENT FUNCTION window
7. as follows e the calibrator is not properly attached to the instrument e there are external disturbances e the calibrator or the measurement channel the microphone the preamplifier or the instrument itself are damaged A Notice During the calibration measurement the external disturbances acoustic noise or vibrations should not exceed the value of 100 aB 5 Press the lt ENTER gt push button in order to accept the measurement result The calibration factor is calculated stored and displayed cf next Figure after pressing the lt ENTER gt push button A Notice The user has to press the lt ESC gt push button in order to quit the calibration procedure without saving the calibration factor o CALIBRATION i4 o CALIBRATION 43 EY MEASUREN lt ENTER gt car IBRATION HISTORY CALIBRATION windows after the measurements and after the acceptance of the calibration factor value Calibration BY MEASUREMENT in the case of vibration signal The calibration by measurements path MENU FUNCTION CALIBRATION CHANNEL x BY MEASUREMENT can be conducted in the following way 1 Select the calibration by measurement highlight the BY MEASUREMENT text from the CALIBRATION window and press the lt ENTER gt push button 4 6 SVAN 958 USER MANUAL o o o CALIBRATION CALIBRATION tib CALIBRATION tib CHAHHEL 1 CALIBRATION LEVEL CHAHHEL 2 MY MEASUREMEN 1 68 mist CHAHHEL 3 CALIBRATION HI
8. ows but the positions in these items are not displayed inversely and so not accessible The Loudspeaker icon indicates that the instrument is in the measurement process In order to change the sensitivity the measurement must be finished o CALIBRATION t4 SENSITIVITY 16 Brille Pa CALIBRATION FACTOR C 88d CALIBRATION window with SENSITIVITY positions not accessible 2 Set the sensitivity of the microphone taken from its calibration card using the lt lt gt lt gt gt push buttons and then press the lt ENTER gt one The calibration factor is calculated automatically in the relation to 50 0 mV Pa The confirmation of the introduced SENSITIVITY is made after pressing the lt ENTER gt push button For the sensitivity of the microphone greater than 50 0 mV Pa the calibration factor is negative o CALIBRATION i4 CALIBRATION FACTOR C 1 6d6 CALIBRATION window with the sensitivity greater than 50 0 mV Pa and calculated calibration factor For the sensitivity of the microphone smaller than 50 0 mV Pa the calibration factor is positive ao CALIBRATION 43 SEMSITIVITY CALIBRATION FACTOR C Bd CALIBRATION window with the sensitivity smaller than 50 0 mV Pa and calculated calibration factor The lowest applicable value of the sensitivity to be introduced is equal to 50 0 uV Pa it conforms to the calibration factor equal to 60 0 dB and the greatest one 50 0 V Pa calibra
9. result in the chosen channel ao m m CALIBRATION 13 CALIBRATION tib CALIBRATION tib SITIVITY BY SENSITIVITY SUREMENT SUR EHT CALIBRATION HISTORY CALIBRATION HISTORY CALIBRATION HISTORY CALIBRATION windows in CHANNEL 1 A Note The calibration level and the calibration result is expressed in different units depending on the settings of the instrument The metric or non metric vibration units are set in the VIBRATION UNITS path MENU SETUP VIBRATION UNITS Additionally the linear or logarithmic units are set in the DISPLAY SCALE path MENU DISPLAY DISPLAY SETUP CHANNEL x DISPLAY SCALE 4 2 1 Calibration by the sensitivity introduction Calibration BY SENSITIVITY in the case of acoustic signal The calibration by the microphone s sensitivity introduction path MENU FUNCTION CALIBRATION CHANNEL x BY SENSITIVITY can be conducted in the following way 1 Select this type of the calibration highlight the BY SENSITIVITY text from the CALIBRATION window and press the lt ENTER gt push button 4 2 SVAN 958 USER MANUAL o o CALIBRATION t4 CALIBRATION t4 SENSITIVITY i BY MEASUREMENT SENS ELVEN CALIBRATION HISTORY CALIBRATION FACTOR C 8dE CALIBRATION windows with the selected calibration mode and after entering this mode A Notice It is not possible to calibrate the instrument during the execution of the measurements It is possible to open different lists and wind
10. sturbances e the calibrator or the measurement channel the accelerometer or the instrument itself are damaged A Note During the calibration period external disturbances vibrations or acoustic noise should not exceed 100 dB 5 Press the lt ENTER gt push button in order to accept the measurement result The calibration factor is calculated stored and displayed cf Fig below after pressing the lt ENTER gt push button ao CALIBRATION t4 CALIBRATION t4 ATION HISTORY Confirmation of calibration result by pressing the lt ENTER gt push button A Note The calibration factor is always added to the measurement results in the level meter mode and to those coming from the frequency analysis 4 7 SVAN 955 USER MANUAL 4 2 3 View on the last calibration result CALIBRATION HISTORY In CALIBRATION HISTORY window the user can view up to 10 last calibration records In order to enter the CALIBRATION HISTORY path MENU FUNCTION CALIBRATION CHANNEL x CALIBRATION HISTORY the user has to select the CALIBRATION HISTORY text in the CHANNEL x window using the lt A gt lt w gt push buttons and press the lt ENTER gt one oa CAL HISTORY 43 BY MEASUREMEMT i JAH 2687 82 86 44 o CALIBRATION 43 BY SENSITIVITY BY MEASUREMENT CALIBRATION HISTORY CALIBRATION FACTOR 4 9dB C 43 im Pa a b CALIBRATION window with CALIBRATION HISTORY text selected a CALIBRATION HI
11. t is not possible to change the mode measurement function during the measurements The instrument displays in this case for about 2 seconds the text MEASUREMENT IN PROGRESS In order to change the mode of the instrument the measurement must be finished 4 2 Instrument s calibration CALIBRATION The instrument is factory calibrated with the supplied accelerometer and microphone for standard environmental conditions Each of four channels should be calibrated separately In the case when the absolute vibration or sound level value is important a calibration of the measurement channel has to be done This is because the accelerometer or microphone sensitivity is a function of temperature ambient pressure and humidity In order to select a calibration function the user has to enter the CALIBRATION window to select the CALIBRATION text using the lt A gt lt W gt or lt lt gt lt gt gt push buttons and press the lt ENTER gt one when this text is displayed inversely and then select the CHANNEL to be calibrated All four channels of the instrument are calibrated independently In this window three options are available the calibration of the measurement channel by the introduction of the accelerometer s or microphone s sensitivity from theirs calibration cards BY SENSITIVITY or by performing the calibration measurement BY MEASUREMENT Third option is CALIBRATION HISTORY which enables the user to view last calibration
12. tion factor equal to 60 0 dB In order to return to the CALIBRATION window the user has to press the lt ESC gt push button 4 3 SVAN 955 USER MANUAL o CALIBRATION i4 SEMSITIVITY o CALIBRATION i4 SEMSITIVITY CALIBRATION FACTOR CALIBRATION FACTOR C 68 dE Bde a b CALIBRATION windows with the lowest possible sensitivity and the greatest calibration factor a and the greatest sensitivity and the lowest calibration factor b A Notice The calibration factor is always added to the results of sound level measurements and the analysis of sound signal Calibration BY SENSITIVITY in the case of vibration signal The calibration by the accelerometer s sensitivity introduction path MENU FUNCTION CALIBRATION CHANNEL x BY SENSITIVITY can be conducted in the following way 1 Select this type of the calibration highlight the BY SENSITIVITY text from the CALIBRATION window and press the lt ENTER gt push button o CALIBRATION tib CALIBRATION tib BY SENSITIVITY S Y MEASUREMENT SEMSITIVITY CALIBRATION HISTORY CALIBRATION FACTOR C dE CALIBRATION windows with the selected calibration mode and after entering this mode A Notice lt is not possible to calibrate the instrument during the execution of the measurements It is possible to open different lists and windows but the positions in these items are not displayed inversely and so not accessible The Loudspeaker
13. with all available functions ao ao ENTER CODE ENTER CODE E 134118 YACIEGCIDE SH Delete SH Insert SHtr Delete SH Insert Displays during the activation of the optional function The main function of the instrument is the measurement of vibration level in the case of vibration signal and the measurement of sound level in the case of acoustic signal The other functions are optional and they broaden the applications of the instrument They can be supported by the producer or purchased later The producer activates the optional function bought with the instrument The user should activate by itself by entering a special code the function purchased later The sound LEVEL METER SLM mode provides the user with the functions of the SLM meeting the IEC 61672 2002 standard for Type 1 accuracy and the functions of VLM meeting the ISO 8041 2005 standard The instrument can also be used for the long term acoustic monitoring using for this purpose the huge logger in which the measurement results are stored The required function is selected by placing the special character in the line with the proper text The position of the character can be changed using the lt A gt lt v gt or lt lt gt lt gt gt push buttons 4 1 SVAN 955 USER MANUAL After placing the character in the line with the function s name the user has to press the lt ENTER gt push button which closes the MEASUREMENT FUNCTION window A Notice I
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