FMQJ60教學(xué)單雙臂兩用電橋

FMQJ60教學(xué)單雙臂兩用電橋產(chǎn)品介紹（中文）

FMQJ60教學(xué)單雙臂兩用電橋是一款專(zhuān)為教學(xué)和實(shí)驗(yàn)室設(shè)計(jì)的精密測(cè)量?jī)x器，采用凱爾文線路結(jié)構(gòu)，兼具單臂電橋和雙臂電橋功能。該產(chǎn)品適用于測(cè)量10⁻⁴Ω至111.1kΩ范圍內(nèi)的直流電阻，可滿足金屬導(dǎo)體電阻率、導(dǎo)線電阻、電機(jī)繞組電阻等多種測(cè)量需求。電橋采用惠斯通/開(kāi)爾文雙電路設(shè)計(jì)，配備10個(gè)量程倍率和4個(gè)十進(jìn)讀數(shù)盤(pán)，操作簡(jiǎn)便且測(cè)量精度較高。內(nèi)置指零儀和工作電源，無(wú)需額外配件即可完成測(cè)量任務(wù)，適合大專(zhuān)院校、工礦企業(yè)實(shí)驗(yàn)室及野外工作環(huán)境使用。產(chǎn)品采用便攜式設(shè)計(jì)，外形尺寸為290×220×130mm，重量約4kg，便于攜帶和移動(dòng)。電橋在20±1℃參考溫度下工作穩(wěn)定，支持外接電源擴(kuò)展功能，可適應(yīng)不同場(chǎng)景的測(cè)量需求。138

FMQJ60 Teaching Single-Double Arm Dual-purpose Bridge (English)

The FMQJ60 is a precision measuring instrument designed for teaching and laboratory applications, featuring both single-arm and double-arm bridge functionalities based on Kelvin circuit architecture. It covers a wide measurement range from 10⁻⁴Ω to 111.1kΩ DC resistance, suitable for determining resistivity of metal conductors, wire resistance, motor winding resistance and similar applications. The device incorporates Wheatstone/Kelvin dual-circuit design with 10 range multipliers and 4 decade dials for user-friendly operation. Integrated null detector and built-in power supply enable standalone operation without additional accessories, making it ideal for educational institutions, industrial laboratories and field work. With compact dimensions of 290×220×130mm and approximate weight of 4kg, the portable design ensures easy transportation. The bridge maintains stable performance at reference temperature of 20±1℃ and supports external power supply connection for extended application scenarios. The intuitive panel layout includes functional components such as range selector knobs, measurement terminals and sensitivity adjustment controls to facilitate teaching demonstrations. 101519

產(chǎn)品特點(diǎn)與教學(xué)優(yōu)勢(shì)

該電橋在設(shè)計(jì)上特別注重教學(xué)實(shí)用性，面板布局直觀清晰，物理模型明確，便于學(xué)生理解電橋工作原理。采用13端鈕創(chuàng)新布局，可直接連接市電供電，無(wú)需外接大電流回路搭建。產(chǎn)品具有兩種工作模式選擇開(kāi)關(guān)，可自由切換單臂/雙臂電橋狀態(tài)，配合不同教學(xué)實(shí)驗(yàn)需求。測(cè)量過(guò)程中可通過(guò)靈敏度調(diào)節(jié)旋鈕逐步優(yōu)化檢測(cè)精度，幫助學(xué)生掌握精密測(cè)量技術(shù)要點(diǎn)。對(duì)于低阻值測(cè)量，產(chǎn)品采用四端連接法有效減小接線電阻影響，使測(cè)量結(jié)果更接近真實(shí)值。外殼采用工程塑料材質(zhì)，兼顧輕量化與耐用性，適合頻繁的教學(xué)演示使用。6913

Technical Features and Educational Value

The instrument emphasizes pedagogical effectiveness through logically arranged panel components that visually demonstrate bridge circuit principles. Its innovative 13-terminal configuration allows direct mains power connection without external heavy-current loop setup. The dual-mode selector switch enables seamless transition between single-arm and double-arm bridge configurations for diversified teaching experiments. During measurement procedures, the sensitivity adjustment knob permits gradual precision optimization, helping students master key techniques of accurate measurement. For low-resistance testing, four-terminal connection method significantly minimizes lead resistance interference. The durable yet lightweight engineering plastic housing withstands frequent classroom demonstrations. Additional educational benefits include independent control of power supply and null detector circuits, allowing students to practice proper measurement sequencing. The device also serves as an effective tool for comparative studies between different bridge circuit types and their respective applications. 182427

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