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  • Ssaul Bestech

    Laser Extensometer
    Model
    LE-05, LE-15
    Series
    Material Properity Test Equipments

    Product Description


    MODELS LE-05 and LE-15 Laser Extensometers
     
    These extensometers are high precision non-contacting units for strain measurement in materials testing. They use a high speed laser scanner to measure the spacing between reflective tape strips on the sample. The measurement range is from 0.3 to 5 inches (8 to 127 mm) on the LE-05 and 0.3 to 15 inches (8 to 381 mm) on the LE-15. The gauge length is determined by the user. This allows high elongation measurements when shorter gauge lengths are used. The high resolution also allows accurate measurements of smaller strains.

    The self-contained extensometer uses state-of-the-art laser diode technology. A digital display is included. The analog output may be used to connect to existing test controls. The RS-232 serial communications interface provides two way communications. Operation may be local or remote.

    The scanning beam is always perpendicular to the specimen, unlike most laser extensometers. This eliminates errors when viewing through windows in chambers. It also minimizes sensitivity to the distance between the extensometer and the sample. Because the unit measures reflected light, no receiver is required behind the sample.

    Easy to use
    The visible laser light is simply aimed at the specimen, which has small reflective tape strips set at the gauge length desired. The extensometer displays the actual measured gauge length. If desired, the zero button will offset the output to zero. As the specimen is tested, the display will then read the elongation directly.

    The analog output and RS-232 interface are easily connected to existing controls or data acquisition systems.

    High temperature clip-on reflectors may be used as an alternate to tape reflectors. The reflective tape can be used at temperatures up to 300 °F (150 °C). These are re-useable and available as an option. They are rated for use to 800 °F (425 °C).

    Features
    •Non-contacting design requires only reflective tape marks on the specimen, or clip-on reflectors. 
    •Ideal for use in chambers-calibration not affected by aiming through viewing windows. 
    •High resolution of 1 micron. 
    •Full 5 inch (127 mm) or 15 inch (381 mm) measuring range allows high elongation measurements (e.g. 200% on a 1 inch gauge length). 

     

    Specifications

    Measurement Range: LE-05: 0.3 to 5 inches (8 to 127 mm)
    LE-15: 0.3 to 15 inches (8 to 381 mm) 
    Resolution: Display 100 microinches or 1 micron 
    Analog output and RS-232 are 1 micron resolution on lower ranges 
    LE-15: 0.001" (0.01 mm) resolution 
    Linearity1: LE-05: ±0.0004 inches (±0.01 mm) 
    LE-15: ±0.002 inches (±0.04 mm) 
    Repeatability1:  LE-05: ±0.0002 inches (±0.005 mm) 
    LE-15: ±0.002 inches (±0.04 mm) 
    Scan Rate: 100 scans/second 
    Target Distance: Two selectable factory preset values between 
    10 and 18 inches. Default values are:
    LE-05: 12 and 15 inches
    LE-15: 15 and 18 inches 
    Zero Suppression: Reading may be set to zero anywhere in measuring range 
    Scan Line Orientation: Vertical 
    Scan Averaging: Moving window averaging over a selectable number of scans 
    Analog Output: 16 bit, ±10 VDC standard 
    Full Scale Ranges: 0.1, 0.2, 0.5, 1.0, 2.0, 5.0, 10.0, or 20.0 inches 
    (model dependent)
    Optional 2.0, 5.0,10, 20, 50, 100, 200, or 500 mm 
    (model dependent) 
    Digital Communications: RS-232 serial communications, standard 3 wire 
    Selectable 
    Baud Rate: 9600, 4800, 2400, or 1200 
    Display: 2 line, 16 character digital display, backlit LCD 
    Power Input: 115 VAC ±10%, 50/60 Hz standard 
    230 VAC ±10%, 50/60 Hz optional 
    Size: LE-15: 27 L x 18 H x 7.7 W inches (668 x 457 x 196 mm) 
    Weight: LE-05: 10 lbs (4.5 kg ), LE-15: 45 lbs (20.4 kg) 
    Mounting Provisions: 1/4-20 UNC tapped holes in base (4) 
    Laser Source: Diode laser, 670 nM, <1 mW maximum scanned output
    CDRH Certified Class II laser instrument 
    Options: Consult factory for options like reflective clips for high temperature use 
       

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