U1240 系列四位手持万用表：极微测

• 一键检测交流电源（电机、发电机、变压器）中是否存在谐波

• 仅需用一台数字万用表便能监测 HVAC 系统中的不同温度点

• 通过蓝牙® 功能进行无线数据记录，可以提高生产率

• 产品防尘、防水，从 10 英尺高度跌落也能安然无恙

• 您可以选择配有手电筒、低输入阻抗模式和免接触电压检测功能的型号

• Vsense 可实现免接触电压检测，结合低阻抗模式（Zlow）让您的测量变得更轻松

专为恶劣工作条件而设计的 DMM 测试设备

凭借卓越的精度、准确度和可重复性，将测量能力带到测试台之外的地方。 U1240 系列手持 DMM 包括 U1241B、U1242B、U1241C 和 U1242C 等型号。

• 这款数字万用表不仅电池续航时间长，还防尘防水，能够帮您提高生产效率

• 使用可选的 IR-to-Bluetooth® 适配器在 PC 或 iOS / 安卓移动设备上安全地监测测量

• 使用可存储多达 2,000 个读数的内置存储器将数据记录到坚固耐用的 DMM 中

Key Features

• 10,000-count display 

• Up to 0.09% basic DCV accuracy 

• Longer battery life up to 400 hours 1

 • Certified to IP 67 for water and dust protection 1 

• Tested to withstand a 3-meter (10-ft) drop 1 – CAT III 1000 V / CAT IV 600 V overvoltage protection  

• Special features: 

 o Harmonic ratio  measurement to quickly identify the presence of harmonics in AC signals 

o ZLOW, low impedance mode 2 to eliminate false readings caused by stray voltages 

o Vsense 2 for non-contact voltage detection 

o T1 – T2 differential temperature 2 measurement 

o Built-in flashlight 3 

Dual and differential temperature 

In the installation, maintenance, and troubleshooting of heating, ventilation, and air-conditioning (HVAC) systems, temperature measurements are essential. As an example, to ensure boiler temperature adheres to safety requirements, you would need to measure both boiler and air temperature simultaneously to achieve accurate real-time readings. With a faulty air conditioning system, viewing the temperature difference between the warm return air and cool air supply helps to reveal the cooling behavior of the evaporator with respect to time. Now with the convenience of the U1242B/C DMM, you need only one instrument to efficiently get dual and differential measurements. 

Built-in flashlight with ergonomics in mind 

Designed for handheld users working in poorly lit environments, the U1240C Series fits comfortably in your palm, allowing you to single-handedly illuminate the test area with its easily activated built-in LED flashlight. With ergonomics in mind, you can swiftly make more measurements without straining your hands even over a longer period of time. 

Prolonged battery life and rugged build 

The last thing you want is for your tools to run out of juice when you need it the most. The U1240C Series of handheld DMMs lets you carry out tests and measurements over a prolonged duration. With up to 400 hours of battery life, you don’t have to worry about the hassles of battery change and just focus on maximum productivity. 

When operating in harsh environments, you need tools that are strong and solid enough to stand up to the task. The U1240C Series DMMs are housed in robust overmolded enclosures and certified to IP 67 for dust and water resistance. Better yet, it is also designed to absorb the impact of a 3-meter (10-foot) drop — especially useful in case of accidental drops during installation and maintenance work. 

Perform data logging on-DMM, wired or wirelessly 

Keep the production lines running smoothly with the U1240 Series DMMs’ data logging capabilities. Users have two options to record individual readings. The first option is to simply record data into the main DMM unit by utilizing the built-in internal memory of up to 2,000 readings storage. The second option is to transmit data to a PC with the IR-USB cable utilizing the Keysight Handheld Meter Logger software. With this capability, you can ensure every reading gets recorded accurately at intervals you specify. Better yet, you can eliminate the conventional data entering process and generate error-free automated test reports in various forms such as a graph, table, and statistical information or limit test results.