{"product_id":"trotec-ld20hc-leak-correlator","title":"TROTEC LD20HC – Leak Correlator with Acoustic Leak Location (5 cm resolution at 100 m)","description":"\u003cdiv style=\"background:#eef4fa;border:2px solid #2a6fb0;padding:12px 16px;border-radius:8px;margin:0 0 20px 0;\"\u003e\u003cp style=\"margin:0;color:#0f1923;\"\u003e\u003cstrong\u003eAvailable to order:\u003c\/strong\u003e typical lead time 5–10 working days. We confirm the exact date after your order or enquiry.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eThe TROTEC LD20HC is a combined instrument for leak location by correlation and for acoustic leak and line location in pipelines and drinking water networks. It calculates the exact leak position from the transit-time difference of the leak noise picked up at up to three contact points, with a \u003cstrong\u003emeasuring resolution of 5 cm over a 100 m measuring section\u003c\/strong\u003e. \u003cstrong\u003e64-bit three-point correlation\u003c\/strong\u003e, \u003cstrong\u003efrequency analysis (FFT)\u003c\/strong\u003e, \u003cstrong\u003e256 freely selectable filters\u003c\/strong\u003e and \u003cstrong\u003e120 dB amplification\u003c\/strong\u003e run on a 6-core processor in a robust, IP65-protected aluminium housing; up to \u003cstrong\u003e20 pipe sections\u003c\/strong\u003e with different materials and diameters can be correlated in one measurement run. Two radio transmitters with highly sensitive sound sensors are included.\u003c\/p\u003e\n\u003ch4\u003eHow it works\u003c\/h4\u003e\n\u003cp\u003eWater escaping under pressure at a leak creates a noise that travels through the pipe in both directions and is transmitted to hydrants, fittings or valves. Highly sensitive sound sensors are mounted at these accessible contact points; the signal is amplified and transmitted by the LD radio transmitters (433\/434 MHz, 500 mW) to the correlator. Taking into account pipe material, pipe diameter and the length of the measuring section, the LD20HC calculates the leak position from the transit-time difference. Because the pipe type affects sound propagation, material and diameter can be specified for every pipe section.\u003c\/p\u003e\n\u003cp\u003eThe instrument offers automatic and manual correlation as well as acoustic leak location (F\u0026amp;L and Smart). Functions include automatic filter adjustment, automatic gain, a preference memory for manual filter settings and sound-level overload protection. It is controlled either via the 5.7-inch backlit touch colour display or via buttons and a rotary control. Structure-borne and ground microphones can be connected for listening, for example to verify a correlated leak with a ground microphone. With the Smart function (patent pending), potential leak points are shown as a bar indicator: the leak is at the steepest level.\u003c\/p\u003e\n\u003ch4\u003eKey benefits\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo methods in one instrument\u003c\/strong\u003e — correlation measurement and acoustic leak location in one combined device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise result\u003c\/strong\u003e — measuring resolution of 5 cm over a 100 m measuring section with 64-bit three-point correlation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 20 pipe sections in one run\u003c\/strong\u003e — material and diameter of each section can be specified, saving time on mixed pipe networks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks where other methods struggle\u003c\/strong\u003e — correlation often still locates leaks when weather, laying depth or high background noise hamper other electro-acoustic methods.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal processing\u003c\/strong\u003e — FFT frequency analysis, 256 high-pass and low-pass filters, 120 dB amplification with a low noise factor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart function (patent pending)\u003c\/strong\u003e — potential leak points shown as a bar indicator for faster acoustic pinpointing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual control\u003c\/strong\u003e — operate via touch display or via buttons and rotary control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust for field use\u003c\/strong\u003e — powder-coated aluminium housing with IP65, more than 10 h of continuous operation on the 8,500 mAh NiMH battery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTypical applications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLeak location by correlation in drinking water networks and pipelines, with sensors placed on hydrants, fittings or valves.\u003c\/li\u003e\n\u003cli\u003eStandard equipment for water utilities and metrological service providers.\u003c\/li\u003e\n\u003cli\u003eAcoustic leak location and line location with connected structure-borne or ground microphones, including verification of a correlated leak position.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eOperating conditions and installation\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOperating temperature: -10 °C to 55 °C (operating manual: -20 °C to +60 °C).\u003c\/li\u003e\n\u003cli\u003eStorage temperature: -25 °C to 65 °C.\u003c\/li\u003e\n\u003cli\u003eProtection class: IP65 (dust-tight, protected against water jets from any angle).\u003c\/li\u003e\n\u003cli\u003ePower supply: integrated NiMH battery, 8,500 mAh; more than 10 h continuous operation; charging via the included charger.\u003c\/li\u003e\n\u003cli\u003eRadio transmission: 433\/434 MHz, transmission power 500 mW.\u003c\/li\u003e\n\u003cli\u003eAccording to the manual, do not use in potentially explosive areas or on live parts; only trained or instructed personnel may operate the instrument.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eScope of delivery\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1 x correlator LD20HC with two antennas and carrying strap\u003c\/li\u003e\n\u003cli\u003e1 x LD K sound-insulated headphones\u003c\/li\u003e\n\u003cli\u003e1 x charging power supply\u003c\/li\u003e\n\u003cli\u003e1 x LD-TA transmitter 1 incl. sound sensor, colour red\u003c\/li\u003e\n\u003cli\u003e1 x LD-TB transmitter 2 incl. sound sensor, colour yellow\u003c\/li\u003e\n\u003cli\u003e1 x transport case for instrument, LD-TA, LD-TB and accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe operating manual additionally lists a reset dongle and the manual itself in the scope of delivery.\u003c\/p\u003e\n\u003ch4\u003eAccessories\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional:\u003c\/strong\u003e LD-TC transmitter 3 incl. sound sensor, colour blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional:\u003c\/strong\u003e LD20 MA magnetic-base antenna for the correlator, with gain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional:\u003c\/strong\u003e LD20 MA+ magnetic-base antenna for the correlator, with gain (4 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional:\u003c\/strong\u003e LD20 Hydro hydrophone without pressure gauge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional:\u003c\/strong\u003e LD20 Hydro UF adapter for the hydrophone on a DIN hydrant claw with 1-inch female thread, for mounting with a valve key\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional:\u003c\/strong\u003e LD6000 VK connection cable for ground microphones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional:\u003c\/strong\u003e LD6000 BMW wind-protected ground microphone (with dead man's button)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional:\u003c\/strong\u003e LD6000 BM universal microphone with magnetic adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional:\u003c\/strong\u003e LD6000 DA tripod adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional:\u003c\/strong\u003e LD6000 VL probe rod extension with tip\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical data\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArticle number:\u003c\/strong\u003e 3110008205 · EAN: 4052138016350\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength without packaging:\u003c\/strong\u003e 380 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth without packaging:\u003c\/strong\u003e 155 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight without packaging:\u003c\/strong\u003e 67 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight without packaging:\u003c\/strong\u003e 2.9 kg (operating manual: receiver approx. 2,300 g, transmitter approx. 2,900 g)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight including packaging:\u003c\/strong\u003e 4.2 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 5.7\" touch colour LCD, backlit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData memory:\u003c\/strong\u003e up to 100 measurements per operating mode\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmission frequency:\u003c\/strong\u003e 433\/434 MHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmission power:\u003c\/strong\u003e 500 mW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of batteries per device:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation, max. temperature:\u003c\/strong\u003e 55 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation, min. temperature:\u003c\/strong\u003e -10 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage, max. temperature:\u003c\/strong\u003e 65 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage, min. temperature:\u003c\/strong\u003e -25 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput impedance (sound):\u003c\/strong\u003e \u0026lt; 10 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput impedance (sound):\u003c\/strong\u003e 1 MΩ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring resolution, geophone:\u003c\/strong\u003e 0 – 99 digits (equivalent to dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring resolution, correlation:\u003c\/strong\u003e 5 cm over a 100 m measuring section\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplification:\u003c\/strong\u003e 120 dB (low noise factor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency range (sound):\u003c\/strong\u003e 0 – 4,000 Hz acoustic leak location\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring range, sound:\u003c\/strong\u003e 0 Hz – 5,000 Hz (correlation)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters:\u003c\/strong\u003e 256 high-pass and low-pass filters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating modes:\u003c\/strong\u003e correlation leak location (automatic, manual); acoustic leak location (F\u0026amp;L, Smart)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring and device functions:\u003c\/strong\u003e automatic filter adjustment, automatic gain, preference memory for manual filter settings, sound-level overload protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDevice control:\u003c\/strong\u003e rotary control, buttons, touch function\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterfaces:\u003c\/strong\u003e 2 x SMA antenna socket; 3-pin headphone connection (IP65); 4-pin charging socket (IP65); bayonet sensor connection (IP65); USB cable connection (IP65)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating time:\u003c\/strong\u003e \u0026gt; 10 h continuous operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower supply:\u003c\/strong\u003e NiMH battery, 8,500 mAh\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery monitoring:\u003c\/strong\u003e via microcontroller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP protection class:\u003c\/strong\u003e IP65 (complete protection against contact; protection against water jets from any angle; dust-tight)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment:\u003c\/strong\u003e 64-bit three-point correlation; frequency analysis (FFT); correlation of up to 20 pipe sections in one measurement run; Smart function (patent pending); 6-core processor; connection for structure-borne and ground microphones; amplification of more than 60,000 times by sound sensors and radio transmitters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e powder-coated aluminium housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFrequently asked questions\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eHow many measuring points can the LD20HC use?\u003c\/strong\u003e\u003cbr\u003eSound is picked up at up to three contact points. Two transmitters with sound sensors (LD-TA and LD-TB) are included; a third transmitter LD-TC is available as an option for three-point correlation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the LD20HC handle pipe networks with different materials?\u003c\/strong\u003e\u003cbr\u003eYes. Material and diameter can be specified for each pipe section, and up to 20 pipe sections can be examined in one measurement run.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I also listen for leaks directly?\u003c\/strong\u003e\u003cbr\u003eYes. Structure-borne and ground microphones can be connected for acoustic leak and line location, for example the optional LD6000 BMW ground microphone via the LD6000 VK cable. The Smart function shows potential leak points as a bar indicator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does the battery last?\u003c\/strong\u003e\u003cbr\u003eThe integrated NiMH battery (8,500 mAh) provides more than 10 h of continuous operation; a charging power supply is included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOriginal TROTEC equipment\u003c\/strong\u003e — supplied with full manufacturer documentation by BMB Rheinland, your authorised distribution partner.\u003c\/p\u003e\u003cp\u003ePlanning a project or a larger requirement? \u003ca href=\"\/pages\/contact\"\u003eRequest a quote\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\u003ch3\u003eDownloads\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/de.trotec.com\/fileadmin\/downloads\/Leckageortung\/LD20HC\/TRT-BA-LD20HC-TC-002-EN.pdf\" target=\"_blank\"\u003e📄 Operating manual TROTEC LD20HC (EN)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/de.trotec.com\/fileadmin\/downloads\/Leckageortung\/LD20HC\/TRT-BA-LD20HC-TC-002-DE.pdf\" target=\"_blank\"\u003e📄 Operating manual TROTEC LD20HC (DE)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/de.trotec.com\/fileadmin\/downloads\/Leckageortung\/LD20HC\/TRT-CE-LD20HC-HS-001-EN.pdf\" target=\"_blank\"\u003e📄 Declaration of conformity TROTEC LD20HC (EN)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/de.trotec.com\/fileadmin\/downloads\/Leckageortung\/LD20HC\/TRT-CE-LD20HC-HS-001-DE.pdf\" target=\"_blank\"\u003e📄 Declaration of conformity TROTEC LD20HC (DE)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"TROTEC","offers":[{"title":"Default Title","offer_id":58788074455384,"sku":"3110008205","price":11698.89,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/3932\/1432\/files\/Korrelator-LD20HC-55870-1485426779.jpg?v=1791984247","url":"https:\/\/shop.bmbrheinlandgmbh.com\/products\/trotec-ld20hc-leak-correlator","provider":"BMB Rheinland GmbH","version":"1.0","type":"link"}