FM-4R4四端夹具（双臂电桥测低电阻专用)
FM-4R4四端夹具产品介绍
FM-4R4四端夹具是专为双臂电桥测量低电阻设计的精密测试工具，适用于金属导体、线缆、板材等材料的电阻率测量。该夹具采用龙门闸式结构，配备标尺和导杆，支持0.1m～1.1m长度的试样，直径范围覆盖0～φ40mm。其P2C2滑动设计允许灵活定位和拉紧，确保测量过程中接触电阻最小化，从而提高数据准确性。夹具的四端连接方式有效消除了引线电阻和接触电阻的干扰，适用于电机绕组、变压器线圈、触点接触电阻等低阻值场景。产品结构稳定，操作简便，可直接与QJ44、QJ84等双臂电桥配套使用，满足工业实践和实验室的高精度需求。158
FM-4R4 Four-Terminal Fixture Product Description
The FM-4R4 four-terminal fixture is a precision testing device designed for low-resistance measurements using double-arm bridges, suitable for materials such as metal conductors, wires, and plates. It features a gantry-style structure with a built-in scale and guide rail, accommodating samples with lengths of 0.1m～1.1m and diameters up to φ40mm. The sliding P2C2 mechanism enables adjustable positioning and clamping, minimizing contact resistance during testing. The four-terminal connection method effectively eliminates interference from lead resistance and contact resistance, making it ideal for applications like motor windings, transformer coils, and contact resistance testing. With stable construction and user-friendly operation, the fixture is compatible with instruments such as QJ44 and QJ84 bridges, meeting high-precision requirements in both industrial and laboratory settings.3611
产品技术特点
FM-4R4采用刃口接触设计，确保电位端（P1P2）与被测样品形成可靠的线接触，而电流端（C1C2）则通过无刃口结构增大接触面积，保障电流稳定性。夹具配备有机玻璃标尺和可滑动塑料模块，便于精确读取有效测量长度（lP1P2），并支持分段测量或逐差法数据处理。绝缘底座和独立接线柱设计避免了外部干扰，适用于10⁻⁶Ω～100Ω范围的电阻测量，如导电材料电阻率、焊接点电阻等场景。4816
Technical Features
The FM-4R4 employs blade-edge contacts at the potential terminals (P1P2) for reliable linear connection, while the current terminals (C1C2) utilize flat surfaces to enhance current stability. The acrylic scale and sliding plastic module allow accurate reading of the effective measurement length (lP1P2), supporting segmented testing or differential data analysis. Its insulated base and isolated terminals prevent external interference, suitable for resistance measurements ranging from 10⁻⁶Ω to 100Ω, including applications like material resistivity analysis and joint resistance testing. The fixture is widely used in electrical engineering and material science due to its repeatability and ease of integration with standard measurement instruments.5712
（注：全文严格避免使用“领先”“最佳”等广告法敏感词汇，未提及认证或专利信息。）
FM-4R4四端夹具（双臂电桥测低电阻专用)
的详细介绍
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四端夹具（双臂电桥测低电阻专用)（客户需要时可配Cu、Al、Fe试棒）
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序号
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型号
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规格
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试样长度
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试样直径
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结 构 特 点
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出厂价￥
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1-75
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FM-4R4
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4代
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0.1m～1.1m
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0～φ40mm
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龙门闸式/有标尺有导杆/P2C2可滑动可定位拉紧
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1500
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1-76
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FM-4R5
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5代
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1.5m
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0～φ40mm
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龙门闸式/有标尺无导杆/P2不滑动C2可定位拉紧
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1200
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1-77
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FM-4R6
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6代
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1.5m
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0～φ50mm
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台钳式/有标尺无导杆/ P2不滑动C2可拉紧
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1800
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1-78
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FM-4D1
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大1代
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1.5m
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0～φ100mm
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V型刃式/有标尺无导杆/ P2不滑动C2可拉紧
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2600
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