Anchor is an ultrasonic low-frequency tester designed for in-situ quality assessment of concrete anchors, solid rebars and reinforcement, and metallic elements using low-frequency ultrasonic waves.Main application field: Non-destructive testing of anchor bolts and similar structural elements.Evaluations performed by placing ultrasonic transducer on the free outer end of the bolt:Detection of anchor breaksResidual length/fraction assessmentAdhesion quality assessmentApplication features:Assessable bolt / rebar diameter20-40 millimeters (0.8-1.6 inch)Not grouted assessment lengthup to 8 meters (26.3 feet)Minimal assessment length0.3 meter (9.8 feet)Assessable grouting depth in concreteup to 1 meter (3.3 feet)Assessable grouting depth in rockup to 4 meters (13.1 feet)Technical specifications:ParameterValueOperating frequency range, kHz25-250Maximal data acquisition length, μs4000Assessment length, m0.5-3Assessment length of embedded rods, mup to 1Assessable rod diameter range, mm20-40Material velocity range, m/s500-15000Transmitter output voltage, V±20, ±100, ±200Transmitter pulse formBipolar meander, 0.5÷5.0 periodsPulse repetition rate, Hz1-45Gain setup range, dB0-100, step 1Number of the programmable points of DAC function24Dynamic range of DAC function, dB30Power supplyBuilt-in batteryOperation time, h14Battery charging time, h3Display typeTFT (640 х 480)Electronic unit dimensions, mm260×156×43Electronic unit weight, kg0.8Operational conditions:Operating temperature range, ºCfrom -20 to +45Relative air humidity at +35°С, %, max95Ultrasonic pulse-echo method:The ultrasonic pulse-echo method is a widely used non-destructive testing (NDT) technique that helps assess the internal integrity of materials by detecting flaws such as cracks, voids, delaminations, and other internal discontinuities. This method uses high-frequency sound waves (ultrasound) to penetrate a material and measure the time it takes for the sound waves to bounce back (or "echo") from internal features or defects. The pulse-echo method is particularly effective for inspecting materials like metals, concrete, ceramics, and composites.How it works:Pulse generation: A transducer generates high-frequency ultrasonic waves and sends them into the material being tested.Propagation and reflection: As the sound waves travel through the material, they are reflected back when they encounter a boundary between different materials or a defect such as a crack or void.Echo detection: The transducer receives the reflected sound waves (echoes) and measures the time taken for them to return.Data interpretation: The time between the emission of the pulse and the reception of the echo is analyzed to determine the location, size, and nature of any internal flaws.Applications:Construction: Inspecting concrete structures for voids, cracks, and delaminations.Manufacturing: Evaluating welds and detecting defects in components like pipes, pressure vessels, and machinery.Aerospace and automotive: Inspecting critical components such as engine parts, airframes, and gears.Energy: Assessing the condition of power plant equipment, pipelines, and wind turbine blades.Advantages:Non-destructive: Allows for internal inspection without causing damage.High accuracy: Provides precise data on internal flaws.Versatility: Usable on a wide range of materials.Portable equipment: Suitable for on-site and in-lab testing.Depth measurement: Can detect flaws deep within a material.Assessable bolt/rebar diameter: 20-40 mmNot grouted assessment length: up to 8 mMinimal assessment length: 0.3 mAssessable grouting depth in concrete: up to 1 mAssessable grouting depth in rock: up to 4 mOperating frequency range: 25-250 kHzMaximal data acquisition length: 4000 μsAssessment length: 0.5-3 mAssessment length of embedded rods: up to 1 mAssessable rod diameter range: 20-40 mmMaterial velocity range: 500-15000 m/sTransmitter output voltage: ±20, ±100, ±200 VTransmitter pulse form: Bipolar meander, 0.5÷5.0 periodsPulse repetition rate: 1-45 HzGain setup range: 0-100 dB, step 1Number of programmable points of DAC function: 24Dynamic range of DAC function: 30 dBPower supply: Built-in batteryOperation time: 14 hBattery charging time: 3 hDisplay type: TFT (640 х 480)Electronic unit dimensions: 260×156×43 mmElectronic unit weight: 0.8 kgOperating temperature range: from -20 to +45 ºCRelative air humidity at +35°С, max: 95%