Gardco :: Sigmascope SMP350

Features

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.

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 C_p, C_pk and histogram presentation
Manual temperature input
Monitoring of temperature changes over time (ΔT/Δt)
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 Data

Technical 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

The probes measure the specific electrical conductivity of non-ferrous metals in accordance with DIN EN 2004-1 and ASTM E 1004. Because of the integrated temperature sensor all probes are suitable for temperature corrected measurements with automatic display of the conductivity value normalized to 20°C (68°F). All probes work with different frequencies and therefore are able to measure up to various material depths. The used measuring method allows contact-free measurements and measurements under non-conductive top coatings as lacquer coatings or plastic covers.

Material sorting
Inspection for heat damage and material fatigue¹
Conclusion about the hardness and strength of heat treated materials¹
Determination of metal purity¹
Criterion for the quality of alloys¹
Assessment of thermal sprayed coatings¹
FS40LF, additional featured for testing the authenticity of coin alloys and small precious bullions¹

¹ Such applications are based solely on specific empirical values

Probe FS40 Technical Data
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 ≥ Th_min Depending on the electrical conductivity of the material the minimal material thickness Th_min can be computed according to the following equation:
		f = 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"
		Measuring 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 spot
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"
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

Sigmascope® SMP350 Electrical Conductivity Gauge

Features

Technical Data

Probe FS40

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