以下是一份关于3452-12指针兆欧表的产品中英文介绍：

3452-12指针兆欧表是一款由日本日置（HIOKI）公司生产的高精度绝缘电阻测试仪器。该产品具有多种实用功能和特点，使其在电气设备的绝缘检测中表现出色。它配备了荧光式刻度盘，即使在光线较暗的环境中，也能方便用户清晰读取测量数据。此外，3452-12还具备活线确认功能，能够帮助用户快速判断电路是否带电，从而提高测试的安全性和准确性。该兆欧表还设计了电池低电量检查功能，避免因电量不足导致测量中断，同时具备放电功能，可在测试结束后安全释放被测设备上的残余电荷。

从技术参数来看，3452-12提供了三种测量电压选项，分别是125V DC、250V DC和500V DC，能够满足不同设备和场景下的绝缘电阻测试需求。其有效测量量程及公差分别为：在125V DC时，指示刻度的±5%在0.02MΩ～10MΩ；250V DC时，±5%在0.05MΩ～20MΩ；500V DC时，±5%在0.1MΩ～50MΩ。此外，该仪器还可测量交流电压，量程为0～500V（50/60Hz），公差为满量程的±5%。

3452-12指针兆欧表的体积小巧，重量仅为420g，便于携带和操作，非常适合在各种现场环境中使用。其电源由4节AA电池（R6P）供电，进一步增强了其便携性。此外，该仪器还配备了测试探头（9292）和携带盒（9384），方便用户进行测试操作和设备存储。

The 3452-12 pointer megohmmeter is a high-precision insulation resistance testing instrument produced by HIOKI, a company based in Japan. This product features a fluorescent dial, which allows users to read measurement data clearly even in dimly lit environments. In addition, the 3452-12 is equipped with a live wire confirmation function that enables users to quickly determine whether a circuit is energized, thereby enhancing the safety and accuracy of the testing process. The device also includes a low battery check function to prevent measurement interruptions due to insufficient power, as well as a discharge function that safely releases residual charges from the tested equipment after the test is completed.

In terms of technical specifications, the 3452-12 offers three measurement voltage options: 125V DC, 250V DC, and 500V DC, catering to the insulation resistance testing needs of various equipment and scenarios. The effective measurement range and tolerance are as follows: at 125V DC, the tolerance is ±5% of the indicated scale within the range of 0.02MΩ to 10MΩ; at 250V DC, ±5% within the range of 0.05MΩ to 20MΩ; and at 500V DC, ±5% within the range of 0.1MΩ to 50MΩ. Moreover, the instrument can measure AC voltage with a range of 0 to 500V (50/60Hz) and a tolerance of ±5% of the full scale.

The 3452-12 pointer megohmmeter is compact in size and weighs only 420g, making it easy to carry and operate, and is suitable for use in various on-site environments. It is powered by four AA batteries (R6P), further enhancing its portability. Additionally, the device comes with a test probe (9292) and a carrying case (9384), facilitating test operations and equipment storage for users.