NM-4A ultrasonic detector pile NM-4A pile ultrasonic detector, NM-4A nonmetallic ultrasonic detector automatically detects the pile integrity testing (acoustic transmission method), testing concrete strength, crack depth, concrete uniformity, damage layer thickness, concrete thickness, structure of internal defects, internal defects of concrete pipe NM-4A pile ultrasonic detector, NM-4A nonmetallic ultrasonic detector host technical indicators Host Type NM-4A Receiving Sensitivity ≤ 10μV Sound when reading the measurement accuracy ≤ ± 0.05μS Amplifier bandwidth of 5Hz ~ 500kHz Main control unit dedicated control system Dual channels Maximum sampling length ≤ 64k Amplitude range of 0 ~ 177dB readings LCD TFT LCD Extensions can be extended to the thickness of concrete impact echo tester; Power System: 220V ± 10%; DC: 12V (AC and DC with two); 2. Large-capacity battery, a charge can work for 8-10 hours Weight 1.8kg Size 245mm × 300mm × 85mm 2, the lifting device specifications Continuous upgrading of artificial transducer; Elevation error ≤ 5 ‰, and 100 meters altitude error ≤ 10cm; Synchronization error ≤ 5 ‰; Maximum lifting speed: measured at 20cm spacing of up to 60 m / min; Operating temperature: -10 ℃ ~ +40 ℃. 3, the measured radial transducer pile dedicated technical indicators: 1) high sensitivity: the air can be measured up to 12 meters distance, the distance can be measured in concrete structures up to 10 meters; 2) the wells of high quality geophysical cable special cable, radial transducer probe with a full stainless steel material, not only physical beauty Concept and bright and clean, and greatly enhance the ability of anti-aging, avoiding vibration during transport and impact of the damage, but also to avoid the long-term The course of aging and wear, and more durable. 3) supporting the design of more rational use of conductive slip ring (slip ring) instead of a fixed cable connection, so that tens or even hundred meters of the power Direct access to ultrasound instrument cable, cable with a smooth release with the measured (received), to avoid twisting the cable wrapped around the affected site inspections with Measuring the speed of the phenomenon, greatly improving the speed and efficiency of field tests; 4) The cable comes with telescopic rod reel rack (luggage cart style) BMX, easy towing, moving fast. NM-4A pile ultrasonic detector, NM-4A nonmetallic ultrasonic detector option: the impact echo test parts of a thickness of concrete, including: exciter 1, sensor 1, a preamplifier According to the standard: \"People\'s Republic of industry standard\" building foundation pile testing specifications \"\" (JGJ/106-2003); \"Highway Engineering Technical Specification of pile dynamic testing\" (JTG / T F81-01-2004); \"Detection of intensity Rebound Technical Specification\" CECS 02:2005; \"Ultrasonic detection of defects in concrete technical specification\" CECS 21:2000; \"Ultrasonic detection of defects in concrete technical specification\" CECS 21:2000 NM-4A pile ultrasonic detector, NM-4A nonmetallic ultrasonic detector uses: Automatic detection of pile integrity testing (acoustic transmission method); Testing concrete strength, crack depth, homogeneous concrete, damage layer thickness, concrete thickness; Structure of internal defects, internal defects of concrete pipe