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Lokal 400 Operating Manual 

Page 3 

 

This measuring device has been designed in line with latest technological advancements and 
meets  all  relevant  requirements  of  the  applicable  European  and  national  guidelines. 
Conformity  has  been  proved,  and  the  corresponding  declarations  and  documentation  have 
been  filed  with  the  manufacturer.  In  order  to  maintain  full  compliance  with  above  stated 
guidelines and to guarantee safe operation of the device, the operator is requested to follow 
the below stated safety instructions. 
 
 

1.  Safety instructions 

 
Please note that the manufacturer will not accept any liability for any damage which might occur due to 

improper  use  or  due  to  non-observance  of  the  operating  instructions  stated  in  this  Manual. 
Improper use of the device or non-observance of the operating instructions automatically makes 
product liability expire with immediate effect. 

 
Please read these instructions in full before the LOKAL 400 device is put into operation for the first time.  
For reasons of safety and CE compliance, you may not carry out any changes or modifications on the 
device itself and/or on any other components which may be used in connection with this measuring 
device ! 
 

  DO NOT carry out any measurement on live components; 

  Please  observe  the  measurement  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  conclusions  as  well  as  any  consequential 

measures taken as a result thereof 

are subject to the operator’s sole responsibility.  The 

manufacturer can neither guarantee the validity of any measuring results nor does he 
accept  liability  for  any  such  results.  The  manufacturer  does  on  no  account  accept 
liability  for  any  damage  which  may  be  caused  as  a  consequence  of  the  use  of  the 
received measuring results. 

 

2.  Intended use 

 
The Lokal 400 device is a multi-functional detector to be applied for the electroacoustic search 
for  leakages  by  means  of  correlation.  It  can  also  be  used  to  listen  to  surfaces/fittings  in  an 
electroacoustic way and to locate pipes acoustically. 
The  device  may  be  used  for  the  above-stated  purposes  only  and  within  the  technical  data 
parameters as specified. 
 
Any other use is considered to be not intended for such purposes. 
 

 
In accordance with the EU Directive 2002/96/EU on Waste Electrical and Electronic 
Equipment (WEEE), issued by the European Parliament and by the European Council 
on 27 January 2003, electronic equipment must not be treated as domestic waste but 
must be disposed of professionally. 

.  
 
Please dispose of this device in a manner appropriate  to the relevant  legal requirements of 
your country at the end of the product life of the device

 
 

Содержание Lokal 400

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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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