KEY FEATURES MFD500 Portable Ultrasonic Flaw Detector with hi-resolution color TFT LCD display. The background color and the wave color can be selectable according to the environment. LCD brightness can be manually set. Continue working over 8 hours with high performance lithium-ion battery module ( with large capacity lithium-ion battery option) , easy to be dismantled and the battery module can be charged independently offline. It is light and portable, easily to be taken by one hand; easy operation; superior reliability makes it long life. RANGE 0~ 9999mm ( at steel velocity) ; range selectable in fixed steps or continuously variable. PULSER Spike excitation with low, middle and high choices of the pulse energy. Pulse Repetition Rate: manually adjustable from 10 to 1000 Hz. Pulse width: Adjustable in a certain range to match different probes. Damping: 100© , 200© , 400© selectable to meet different resolution and sensitivity need. Probe work mode: Single element, dual element and through transmission; RECEIVER Real-time sampling at 160MHz high speed enough to record the defect information. Rectification: Positive half wave, negative halfwave, full wave, and RF : DB Step: 0dB, 0.1 dB, 2dB, 6dB step value as well as auto-gain mode ALARM Alarm with sound and light, . MERMORY Total 100 configuration channels store all instrument operating parameters plus DAC/ AVG curve; stored configuration data can be easily previewed and recalled for quick, repeatable instrument setup. Total 1000 datasets store all instrument operating parameters plus A-scan. All the configuration channels and datasets can be transferred to PC via USB port. FUNCTIONS Peak Hold: Automatically searching the peak wave inside the gate and hold it on the display. Equivalent diameter calculation: find out the peak echo and calculate its equivalent diameter. Continuous Record: Record the display continuously and save it to the memory inside the instrument. Defect Localization: Localize the defect position, including the distance, the depth and its plane projection distance. Defect Sizing: calculate the defect size Defect Evaluation: Evaluate the defect by echo envelope. DAC: Distance Amplitude Correction AVG: Distance Gain Size curve function Crack measure: Measure and calculate the crack depth B-SCAN: Display the cross-section of the test block. REAL-TIME CLOCK Real time clock for tracking the time. COMMUNICATION USB2.0 high-speed communication port SPECIFICATIONS Range: ( 0 ~ 9999) mm Bandwidth: ( 0.5 ~ 15) MHz Material Velocity: ( 1000 ~ 9999) m / s Dynamic Range: e 32dB Vertical linear error: d 3% Horizontal linear error: d 0.2% Resolution: > 40dB ( 5P14) Sensitivity Leavings: 60dB ( flat-bottomed deep hole 200mm$ 2) Rejection: ( 0 to 80) % Linear Noise level: d 10% Power supply: DC 9V; lithium batteries work for 4 to 8 hours or more Ambient temperature: ( -20 ~ 50) Relative Humidity: ( 20 ~ 95) % RH Overall dimensions: 263 � 170 � 61 ( mm)