Technical specificationsCENTRAL UNIT

Geo-/CorrelatorLOKAL 400

Testrod and Geophone• Fully-fledged geophone

with256 free selectable band pass filter• SMART function• Volume control• Memory for measurement values• Graphical and numerical value of the leaknoise• Amplification: morethan 60.000 times• Frequency analysis (FFT)• Level history

piezo-ceramie1P68

numerical / graphical eurrentand minimum noise level, batlery status500mWautomatierobust aluminium case8h-10"C to +60 "C2.5 kg

5.7"colortoueh- LCD5 emto 100m pipe lengthautomatie seareh for frequeneiesup to 100measurements permodeUSBsensor / antenna / headphones / eharger256filteroptions256filteroptions-10 "C to +55 "C10 hours (continuous use)1P652.3kg380x 155x 67 mm

speeially for plastie pipesHydrophone (optional)

MEASURING SOXESDisplay

Transmitting pavverBaeklightHousingOperating timeTemperature rangeWeight

DisplayMeasurement ResolutionAFS funetionMemoryInterfaceConnectionsHigh-pass filterLow-pass filterTemperature rangeOperating timeProteetion classWeightDimension

SENSORS

Measuring principleTheLOKAL 400 hasthe latest technology for detecting leaksin pressurized pipelines. A leak sound is produced whenwater under pressure exits the pipe. This noise travels inboth directions through the pipe and is picked-up by highlysensitive sensors which are mounted at accessible placessuch as hydrants, valves etc. Moreover, the LOKAL 400 candetect the leak in pipewith up to 20 different pipesegmentsin one measurement. The captured sound is amplified,filtered and transmitted to the central unit for processingand correlation. The LOKAL 400 hasa selection of 256 filterranges thatcan beapplied to the potential leaksound. Oncethe leakspothasbeen identified, theLOKAL 400canbe usedwitha ground microphone to confirm and pinpoint the leak

BodysoundsensorProtection elass

Specifications aresubject10change