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Sigmascope® SMP350 Electrical Conductivity Gauge

Article No. 10887

Fischer SMP350 Sigmascope w/ FS40 Probe

The Sigmascope® SMP350 Electrical Conductivity Gauge measures the electrical conductivity of nonferrous metals. This gauge makes it is easy and quick to determine the electrical conductivity with precision and accuracy.

$6,493.00 excl. taxes & shipping cost


Measurement Principle - The SIGMASCOPE® SMP350 measures the electrical conductivity using the phase-sensitive eddy current method, which is approved by both DIN EN 2004-1 and ASTM E 1004 for determining conductivity. This kind of signal evaluation allows for contact-free determination of a substrate's electrical conductivity, even under paint or plastic coatings up to 500 µm thick. This method also minimizes the influence of surface roughness. Electrical conductivity is an important material property that provides information not only about a metal's ability to conduct electrical currents but also about its composition, micro structure and/or mechanical properties.

  • Windows™ CE operating system; large touchscreen with keyboard

  • Customizable user interface

  • Very simple calibration via user prompts

  • Simple management of measuring applications with user-definable file and folder structure

  • Memory for several thousand measuring applications and several thousand readings

  • Consideration of each material's conductivity-related temperature coefficient

  • Automatic measurement acquisition in free-running mode or with external start

  • Graphical presentation of specification limits

  • Extensive statistical evaluation of test series with date/time stamp as well as computation of Cp, Cpk and histogram presentation

  • Manual temperature input

  • Monitoring of temperature changes over time (?T/?t)

  • Calibration fine-tuning for instrument calibration with up to 4 standards

  • Acoustic signal for measurement acquisition and violation of specification limits; can be turned on/off

  • Various languages available

  • The corresponding probes are suited for different measurement frequencies. For automatic compensation of temperature influences on the measurement, the ambient or specimen temperature can be taken directly with the integrated (or optional external) temperature sensor.

  • Applications include:

    • Quality assurance and sorting of raw materials

    • Authenticating of coin alloys (e.g. specific conductivity of coins)

    • Assessing hardness and strength of heat-treated materials

    • Inspecting for heat damage, material fatigue and cracks

    • Estimating the phosphorous content in copper

    • Tracking precipitation processes, e.g. for Cu-Cr alloys

    • Testing the homogeneity of alloys

    • Scrap metal sorting

Technical Attributes

  • Data
    Measurements Pursuant To:ASTM E 1004 and DIN EN 2004-1
    Measurement Frequencies:Ranging from 15 kHz to 1 MHz depending on the probe
    Measurement Range:0.5 - 65 MS/m or 1 - 112% IACS
    Measurement Precision:At ambient temperature: ±0.5% of reading
    Operating Temperature:0 - 40°C / 32°F - 104°F
    Lift-off Compensation:To 500 µm
    Smallest Diameter Measurement Area Without Noticeable Influence on the Reading:13 mm
    Connector for electrical conductivity probe, with or without integrated temperature sensor
    Connector for optional temperature sensor
    USB communication and printer port
    Power supply via battery or electric plug
    Probe FS40
    Probe Design:Axial single tip probes with spring-loaded measuring system
    Applications:Determination the electrical conductivity of non-ferrous metals (NF)
    Measurement Range:5... 108 %IACS
    Probe Frequency:60 kHz, 120 kHz, 240 kHz & 480 kHz
    Trueness:Trueness 1...100 %IACS: ≤ 2 % of nominal value
    Based on Fischer factory calibration standards with +20°C (+68°F) material temperature
    Repeatability Precision:Depending on probe frequency
    60 kHz: ≤ 0.10 %IACS of reading
    120 kHz: ≤ 0.15 %IACS of reading
    240 kHz: ≤ 0.20 %IACS of reading
    480 kHz: ≤ 0.35 %IACS of reading
    Based on Fischer factory calibration standards, 5 single readings per standard, standard with +20°C material temperature
    Influences:Depending on material and used probe frequency - The following values are valid for a sufficient material thickness which depends on the used probe frequency
    Material Thickness Th:No measurement deviation within the trueness for Th ≥ Thmin Depending on the electrical conductivity of the material the minimal material thickness Thmin can be computed according to the following equation:
    equationf = Probe frequency in Hz
    σ = Electrical conductivity of the material in %IACS
    K ≈ 0.9, specific probe factor
    Examples Depending on probe frequency
    460 kHz: ≤ 0.10 %IACS of reading
    120 kHz: ≤ 0.15 %IACS of reading
    240 kHz: ≤ 0.20 %IACS of reading
    480 kHz: ≤ 0.35 %IACS of reading
    Edge Distance (R), Specification From Probe Tip Centre:For all probe frequencies- No measurement error within the trueness as of R ≥ 7 mm / 0.28" - Probe needs a minimum of R = 7 mm / 0.28"
    Edge DistanceMeasuring spot in the centre of the circular surface
    Edge Distance (X), Specification From Probe Tip Centre:For all probe frequencies - No measurement error within the trueness as of X ≥ 7 mm / 0.28"
    Measuring spotEdge Distance X
    Curvature (R), measurement deviation from the nominal value with reference to master calibration on flat surface:For 60, 120, 240, 480 kHz

    Compensation of curvature for R = 3...50 mm (0.12...1.97" ) by entering the diameter of curvature into the instrument No measurement error within the trueness as of R ≥ 50 mm / 1.97"
    Measurement with measurement prism (grip ring 2) from the scope of supply. Probe needs a minimum of R = 1 mm / 0.04"Measurement deviation
    Distance Compensation (Measurement through a lacquer or plastic coating):Thickness of an air gab, plastic foil or lacquer coating. Distance compensated up to a thickness of 500 µm / 0.02" max. error: 1 % of reading
    Valid for measuring range - 0.5...108 %IACS
    Admissible Ambient Temperature at Operation:-10°C...+40°C / +14°F...+104°F
    Surface Temperature:max. +40≥C / +104°F
    Humidity Protection:No
    Probe Tip Material:Plastic
    Probe Tip Replaceable:No
    Measuring Method:Phase sensitive eddy current method
    Scope of Supply:Probe, measurement prism (grip ring 2), Cu standard approx. 100 %IACS
    Dimensions:Cable length: 1.5 m / 59.06", other cable lengths on request
    Probe Dimensions

Delivery Content

Carry Case, Power Supply, Battery Set, Carrying strap, Protective cover for instrument, Cu Reference Standard, USB Cable, FS40 Probe

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