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電導率是一個重要的材料屬性，不僅對金屬傳導電流的能力，也對其成分、微觀結構和機械性能提供信息。使SIGMASCOPE® SMP350可以簡單快速并精確地測定電導率。SIGMASCOPE® SMP350 根據(jù)渦流相位法DIN EN 2004-1 和 ASTM E 1004 測量電導率。 這種方法允許無接觸測量，即使隔著油漆或者厚達500μm的塑料涂層，這種方法也幾乎不受表面粗糙度的影響。

Probe FS40HF探頭：

Probe FS40HF探頭根據(jù)DIN EN 2004-1和ASTM E 1004來測量非磁性金屬的電導率。由于集成了溫度傳感器，所有探頭都適合進行溫度校正的測量，并自動顯示標準化為20°的電導率值 C（68°F）。 所有探頭均在高頻下工作，因此只能在低材料深度下進行測量。 使用的測量方法可以進行無接觸測量，也可以在非導電面漆（如漆面或塑料蓋）下進行測量。

        ? 近地表測量
        ? 薄板的測量
        ? 關于薄涂層的磨損程度的判定
        ? 熱噴涂層評估

Probe FS40HF 技術參數(shù)
探頭設計:	Axial single tip probes with fixed measuring system
應用:	非磁性金屬的電導率
測量范圍:	5 ...108 %IACS
探頭頻率:	1000 kHz and 2000 kHz
誤差:	1... 100 %IACS: ≤ 1 % of 標稱值
重復精度:	1000 kHz: ≤ 0.35 %IACS of 讀值 2000 kHz: ≤ 1 %IACS of 讀值
Influences:	取決于材料和探頭使用頻率
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 Thmin 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 For probe frequency 1000 kHz 0.18 mm (0.007") for 100 %IACS (Cu) 0.25 mm (0.010") for 51.7 %IACS (Al) 1.35 mm (0.053") for 1.72 %IACS
Edge Distance (R), Specification From Probe Tip Centre:	For all probe frequencies - No measurement error within the trueness as of R a‰￥ 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 1000 and 2000 kHz Measurement error ≥ 10 % for R ≤ 12.5 mm / 0.49". Probe needs a minimum of R = 1 mm / 0.04"
	Measuring spot
Distance Compensation (Measurement through a lacquer or plastic coating):	0a€|500 ??m / 19.54" Max. Measurement deviation: 2 % of reading, Thickness of an air gab, plastic foil or lacquer coating.
允許操作環(huán)境溫度	-10°C...+40°C / +14°F...+104°F
表面溫度:	max. +40°C / +104°F
防潮:	No
針尖材質:	Plastic
針尖更換:	No
測量方法:	相敏渦流法
標配:	Probe, measurement prism (grip ring 2), Cu standard approx. 100 %IACS
尺寸:	Cable length: 1.5 m / 59.06", other cable lengths on request