上海四达电子HA-380指针万用表产品介绍
产品概述：
上海四达电子HA-380型指针式万用表是一款适用于基础电路检测与维护的实用型测量工具。该产品延续了经典指针式仪表的可靠特性，采用磁电式表头与机械调零结构，能够在电磁环境复杂的场景中保持稳定工作状态。表体采用工程防护材质外壳，配备防滑握柄与防摔缓冲设计，兼顾日常操作的便捷性与设备耐用性。
核心性能：
HA-380设有21档基础量程，涵盖直流电压（0.25V-1000V）、交流电压（10V-1000V）、直流电流（50μA-500mA）及电阻（×1Ω至×10kΩ）等常规电学参数测量。表头灵敏度达到20kΩ/V（DC），配合精准刻度盘与反光镜读数窗，可有效降低视觉误差。内置过载保护装置，在误操作情况下能自动切断敏感电路，延长仪表使用寿命。
设计细节：
优化设计的表盘布局采用白底黑字对比色，配合红色反光指针，确保不同光照条件下的清晰辨识度。功能旋钮采用防误触卡位设计，档位切换时具有明确段落感。测试表笔接口标注醒目的红黑极性标识，支持通用型替换表笔接入。内置便携提手与收纳支架，方便设备存放与现场移动使用。
适用场景：
该产品适用于教育机构基础电学实验、家庭电路检修、低压电气设备维护等场景。其机械指针式显示特性可直观反映参数波动趋势，特别适合需要观察动态变化的电机启动、电容充放电等检测需求。宽温域工作特性（-10℃至+50℃）满足多数常规环境的使用要求。
产品配置：
标准套装包含主机、红黑测试表笔、备用保险丝及操作手册，提供三年有限保修服务。可选配专用便携包与备用表笔套装，满足不同用户的个性化需求。
Shanghai Sida Electronics HA-380 Analog Multimeter Product Introduction
Product Overview:
The HA-380 Analog Multimeter from Shanghai Sida Electronics is a practical measurement tool designed for basic circuit testing and maintenance. Inheriting the reliability of classic analog instruments, it employs a magnetoelectric meter movement with mechanical zero adjustment, maintaining stable performance even in electromagnetically complex environments. The ergonomic housing combines impact-resistant materials with non-slip grip design, balancing daily operation convenience and device durability.
Core Performance:
With 21 measurement ranges covering DC voltage (0.25V-1000V), AC voltage (10V-1000V), DC current (50μA-500mA), and resistance (×1Ω to ×10kΩ), the HA-380 meets routine electrical measurement requirements. Its 20kΩ/V DC sensitivity, combined with a precision dial and mirrored scale, effectively minimizes reading errors. The built-in overload protection mechanism safeguards sensitive circuits during accidental misuse.
Design Features:
The optimized dial layout employs high-contrast white-on-black markings with a red indicator needle, ensuring clear visibility under various lighting conditions. The rotary switch features tactile detents for positive range selection. Color-coded test lead terminals with universal compatibility allow easy probe replacement. Integrated carrying handle and kickstand facilitate transportation and on-site usage.
Application Scenarios:
Ideal for educational electronics labs, household circuit troubleshooting, and low-voltage equipment maintenance. The analog display provides intuitive visualization of parameter fluctuations, particularly useful for observing dynamic processes like motor startup and capacitor charge/discharge cycles. Its operational temperature range (-10℃ to 50℃) accommodates most standard environments.
Package Contents:
Standard package includes main unit, red/black test leads, spare fuse, and operation manual, backed by a three-year limited warranty. Optional accessories include custom carrying case and replacement probe sets for diversified user needs.
