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Lokal 400 Operating Manual

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Lokal 400

Operating Manual

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Summary of Contents for Lokal 400

Page 1: ...Lokal400OperatingManual Page1 Lokal 400 Operating Manual...

Page 2: ...ttings 9 7 1 Automatic measurement 12 7 2 Manual measurement 13 7 3 Setting options for correlation correlation main window 14 7 4 Receiving radio data 17 7 5 Transauto function 17 8 Acoustic leakage...

Page 3: ...nt range of the particular measuring sensors microphones before you start the measurement procedure Please ensure proper storage and operating conditions Any measurement data evaluations any conclusio...

Page 4: ...od 5 Ground microphone with spiral cable 6 Testrod with extensions 7 Adapter for headphones to be connected to central unit 8 Tripod with magnets for ground microphone 9 Headphones 10 Adapter cable fo...

Page 5: ...al function dial Turn the dial to access the menu and setting functions and to specify already selected settings Press the dial to confirm any selection or setting 6 Aerial connection left 7 Jack for...

Page 6: ...e reduced or another type of sensor has to be selected for the leakage detection procedure Basically there are two different types of sensor available Accelerometer sensor Chapter 3 2 or 3 Hydrophone...

Page 7: ...und If the ground is unsurfaced e g grass or gravel surface the ground microphone can be attached to the tripod magnet 8 Therefore it is perfectly suited for double check or verify correlation results...

Page 8: ...e highlighted in yellow Assoonastheoperatorhas pressedthedialtoconfirmhis herselection therequestedmenuitemandselection boxrespectivelyisdisplayed Pressing on Cancel makes the system leave the current...

Page 9: ...on the touch screen please use the lower figure box for the input The input can be confirmed by tapping on the OK icon and the input can be deleted by tapping on DEL Please note that you will have to...

Page 10: ...ted The maximum frequency range available for the geophone mode is 4 000Hz The configuration process complies with the setting process for the date and the time of day as described in Chapter 6 3 1 6...

Page 11: ...try B Sensor entry C Sensor entry A B and C are the channels of the measurement boxes A red B blue C yellow and Sensor entry indicates the direct connection of any microphone see Chapter 5 Section Sen...

Page 12: ...window i e there is the option to readjust the parameters manually after a certain measurement also in the automatic mode 7 1 Automatic measurement If you intend to carry out a measurement in the aut...

Page 13: ...ct position of the source of the noise When the measurement has been completed the number of average determinations stops counting up for the automatic mode a total of 50 average determinations has be...

Page 14: ...urement procedure will run up to 250 average determinations in the manual mode unless the measurement is interrupted beforehand Usually 40 to 50 average determinations are sufficient to receive a prop...

Page 15: ...stem re calculate the coherence image through the function 8 before the filters are set again to have the current coherence displayed If you press the Update button it may take several seconds until t...

Page 16: ...OKAL 400 system will automatically adjust the amplification level 7 3 3 Correlationresults If a measurement isstopped either afterthemaximumaverage determinations have been completed 50 determinations...

Page 17: ...o the correlation main window where the saved result will be displayed and the pipe parameters length material diameter can be changed 7 4Receivingradiodata The system indicates through the two icons...

Page 18: ...lf Perhaps through new positioning of the MB s thenoisefrom the leak itself could be used to calibratethe sound velocity for the section 2 Type in the pipe parameters for the section into the Lokal 40...

Page 19: ...the volume headphones 4 Selecting the sensors filter pre selections 5 Selecting the measurement mode 6 Saving a measurement 7 Uplopading a measurement 8 1 Settingtheacousticparameters 8 1 1 Adjustingt...

Page 20: ...te the symbol and confirm your selection The window where the filter pre settings can be selected will open up now Three pre settings are available Fittings 2 A frequency range of 0 to 2 000 Hz is pre...

Page 21: ...rement curve and the current measurement series will not be deleted by the change in volume Adjusting the volume during a measurement procedure Thevolumecanbeadjustedanytimeduringameasurementprocessby...

Page 22: ...donposition1 andeverynewmeasurementshiftstheprecedingmeasurement to the right As soon as the sixth position has been filled the oldest measurement on position 6 will be deleted and will be replaced Th...

Page 23: ...400 device is capable of carrying out up to seven measurements simultaneously as a measurementseries Thismeasurementseries can be displayed inthemeasurement indication window If the parameter settings...

Page 24: ...ate the headphones during the filter setting process This function can be activated de activated by pressing the key briefly while running the filter setting process The status symbol for the addition...

Page 25: ...program allows printing outareport carrying outfirmwareupdates andloading additionallanguagestothedevice For a more detailed description of the program and its operation please refer to the separate P...

Page 26: ...is not appropriate for the pipe section to be checked See Chapter 5 1 Powering up for correlation and Different types of sensor 2 Sensor has come off the fitting pipe Attach the sensor to the fitting...

Page 27: ...kal 400 device 2 Defective central unit Please contact our Customer Service department Display insufficient brightness 1 Inappropriate lighting settings IncreasethelightingintensityforthedisplayattheS...

Page 28: ...FAST transport case for the LOKAL 400 device and its accessories if you need to shuttle the equipment from one place to the other This case has perfect cavity inserts for the particular components The...

Page 29: ...r supply integrated Ni MH accumulator 8 500 mAh Operating period more than 10 hours of permanent operation with one charging cycle Memory up to 100 measurements per operating mode Connections 2x TNC a...

Page 30: ...ble to pick up with a ground microphone The sound caused by the leak can be made audible again if compressed air can be fed into the pipe system that is being examined In such a case the compressed ai...

Page 31: ...e actual leak If this first stage is not performed the whole length of the pipe will have to be inspected in order to determine the exact location of the leak 16 1 2 1 Narrowing Down the Leak by Using...

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