FMQJ45线路故障测试仪
产品概述
FMQJ45线路故障测试仪是一款基于电桥测量原理设计的便携式检测设备，主要用于通讯电缆、架空线路等场景的故障诊断。该仪器能够精准识别接地、混线、错接、断线等常见线路问题，同时支持一般电阻的测量需求。其内置工作电源和灵敏指示仪表，适合现场快速维修与检测，操作简便且适应性强。56
核心功能
FMQJ45采用可变比例臂和固定比例臂两种回线测试模式，可覆盖1Ω~1.011MΩ的阻值测量范围，基本量程为10~104Ω，准确度达0.1%。此外，仪器还具备电容量测试功能，适用于断线和错接线故障的定位。其指零仪电流常数为1μA/mm（内阻200Ω），配合4.5V干电池供电（3节1号电池串联），确保在无外接电源环境下稳定工作。17
设计特点
仪器采用紧凑型设计，尺寸为230×210×145mm，重量仅2.6kg，便于携带和野外作业。机身结构坚固，集成度高，内置检流计和电池仓，无需额外配件即可完成多数测试任务。用户可通过直观的旋钮和接口快速完成线路连接与参数调节，大幅提升检测效率。28
应用场景
FMQJ45广泛应用于电信、电力、铁路等行业的线路维护，尤其适合长距离电缆和复杂架空线路的故障排查。其轻量化设计和抗干扰能力使其在恶劣环境中仍能保持可靠性能，是工程技术人员进行现场诊断的理想工具。39
Product Overview
The FMQJ45 Line Fault Tester is a portable diagnostic device based on bridge measurement principles, designed for troubleshooting communication cables and overhead lines. It accurately identifies common faults such as grounding, short circuits, misconnections, and breaks, while also supporting general resistance measurement. With built-in power supply and sensitive indicators, it enables efficient on-site repairs and inspections.
Key Features
The FMQJ45 offers both variable and fixed ratio arm testing modes, covering a resistance range of 1Ω~1.011MΩ (base range: 10~104Ω) with 0.1% accuracy. It includes capacitance testing for open and miswired faults, and features a null detector with 1μA/mm sensitivity (200Ω internal resistance). Powered by three 1.5V AA batteries (4.5V total), it ensures reliable operation in field conditions.
Design Highlights
Compact and lightweight (230×210×145mm, 2.6kg), the tester integrates a galvanometer and battery compartment for standalone operation. Its rugged design and intuitive controls simplify connection and parameter adjustment, optimizing workflow for technicians.
Applications
Ideal for telecom, power, and rail industries, the FMQJ45 excels in long-distance cable and complex overhead line maintenance. Its portability and anti-interference capabilities make it a dependable choice for harsh environments.
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FMQJ45线路故障测试仪
的详细介绍
本品为携带式双臂电桥，不用附件就可以准确测定电机变压器直流电阻、开关接触电阻等，还可借助四端夹具（本厂有售）测定金属试样的材质电阻率。型号前有FM为市电型，无FM为电池型。
| 型号 |
测量范围 |
小步进 |
准确度 |
尺度cm3 |
| QJ44 |
10-4～11Ω
|
5mΩ
|
0.2 |
31*26*16 |
| FMQJ44A |
| QJ44A |
10-4～11Ω
|
5mΩ
|
0.1 |
重量kg |
| FMQJ44a |
3 |
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