PC9A数字微欧计
PC9A数字微欧计产品介绍（中文）
PC9A数字微欧计是一款专用于测量低电阻的数字式仪器，适用于测量金属导体、导线、接触点电阻以及电动机、变压器绕组电阻等多种场景。该仪器采用集成化A/D转换器和低漂移运算放大器，具有测量精度高、性能稳定、操作简便等特点。测量范围覆盖10μΩ至1.999kΩ，内部自动切换20mΩ、200mΩ、2Ω、20Ω、200Ω和2kΩ六个量程，每个量程对应不同的测试电流（625mA至1mA）。仪器采用LED大屏幕显示，读数直观清晰，支持自动量程切换功能，并具备过载保护显示（1999闪动）。供电方式灵活，可选择交流220V或DC9V干电池供电，便于野外和现场测试。外形尺寸为240mm×105mm×285mm，重量约2.5kg，适合工矿企业、实验室及车间现场使用。12511
Introduction to PC9A Digital Micro-Ohmmeter (English)
The PC9A Digital Micro-Ohmmeter is a specialized instrument designed for measuring low resistance values, with applications ranging from metal conductors and wire connections to motor windings and transformer coils. It features an integrated A/D converter and low-drift operational amplifiers, ensuring high measurement accuracy and stable performance. The device covers a wide range from 10μΩ to 1.999kΩ, with six auto-ranging segments (20mΩ to 2kΩ) and corresponding test currents (625mA to 1mA). The large LED display provides clear readings, while automatic range switching simplifies operation. Overload protection is indicated by a flashing "1999" display. Power options include AC 220V or DC 9V (via six R20 batteries), making it suitable for both laboratory and field use. Compact dimensions (240mm×105mm×285mm) and lightweight design (approx. 2.5kg) enhance portability for industrial and research environments.391522
产品功能特点（中文）
PC9A数字微欧计具备完善的自我保护功能，内置单片微处理器可在误操作时发出提示信息，使用更安全。仪器设有纯电阻（R）和带电感电阻（L）两种测量模式，能快速处理大型电力变压器等感性负载的测试需求。采样时间仅需0.4秒，多数情况下数秒内即可显示稳定数据。其测试精度优于传统直流电桥，且无需人工调零。内置锂电池供电方案避免了频繁更换干电池的麻烦，同时配备RS232接口便于与计算机连接进行数据导出或进一步处理。仪器在5℃～40℃环境温度下工作稳定，抗干扰能力强，适合复杂电磁环境下的现场测量。571019
Functional Highlights (English)
This instrument incorporates advanced self-protection mechanisms, with a built-in microprocessor that generates error alerts during improper operation. It supports both pure resistance (R) and inductive resistance (L) measurement modes, enabling efficient testing of inductive components like power transformers. With a rapid sampling time of 0.4 seconds, stable readings typically appear within seconds. The measurement accuracy surpasses traditional DC bridges, and automatic zeroing eliminates manual adjustments. The rechargeable lithium battery system reduces maintenance needs, while the RS232 interface allows seamless PC connectivity for data logging. Reliable performance is maintained in temperatures from 5℃ to 40℃, with strong anti-interference capabilities for challenging field conditions.13182428
典型应用场景（中文）
该仪器广泛应用于测量电缆导线电阻、开关触点接触电阻、继电器接插件电阻以及船舶/车辆金属铆接电阻等场景。特别适用于电力系统变压器绕组直流电阻测试、电机生产质检流程中的线圈内阻检测，以及航空航天领域连接部件的导电性能评估。其宽量程设计可满足从微小接触电阻（如电子元件接点）到较大阻值（如长距离电缆）的全方位测量需求，是替代传统QJ42/QJ44双电桥的理想数字化解决方案。1111723
Typical Applications (English)
Ideal for measuring cable conductor resistance, switch contact resistance, and relay connector resistance, this device is particularly valuable for DC winding resistance tests in power transformers, coil impedance checks during motor manufacturing, and conductivity assessments of aerospace fasteners. Its broad measurement range accommodates both minute contact resistances (e.g., electronic components) and larger resistances (e.g., long-distance cables), serving as a modern alternative to conventional Kelvin bridges. The instrument s versatility makes it essential for quality control in electrical equipment production and maintenance diagnostics across transportation and energy sectors.6121627
PC9A数字微欧计
的详细介绍
本仪器主要用于测量其范围内的直流电阻，适用于测量金属导体、导线以及其它的接触点电阻、电动机、变压器绕线电阻等。本品测量精度高、性能稳定、显示清晰、测量范围宽、抗干扰能力强、外表美观、操作方便，是理想的测量仪器。
本仪器装有工作用干电池，并附有外接交直流电源转换器，无论现埸或野外使用都极为方便。PC9A数字微欧计不用调零，测量精度高，性能稳定。
主要技术性能：
1.测量范围：10μΩ～1.999kΩ;
2.准确度：0.1％
3.量程：20mΩ、200mΩ、2Ω、20Ω、200Ω、2kΩ
4.特点：
具对带大电感的电阻产品(如大型电力变压器)快速测量功能
具有量程自动转换和量程保持功能，在测试大批阻值接近的被测对象时，可使测试速度加快。
交直流两用(6节1号干电池或交流220V)
5.3 1/2位LED显示
6.形尺寸：240×285×105(mm)
7.质量：约1.8kg
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