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U1240C Series Handheld Digital Multimeters

資料表

 Introduction

For technicians or industrial test engineers, your ultimate goal is to keep the production line running seamlessly to prevent any unplanned shutdown. The strong and solid Keysight Technologies, Inc. U1240B and U1240C Series are just the DMMs you need to work efficiently on the bench or in the field. Certified to IP 67 and with the durability to withstand drops up to 10 feet (3 meters) to suit harsh working environments, the U1240C can work longer for you with up to 400 hours of battery life. Better yet, you can optimize productivity with the unique remote data logging functionality via USB or Bluetooth®. Perform tests confidently and efficiently — everything you need to get the job done.

Harmonics ratio

In real life, harmonics are present in AC power due to the fact that many electronic devices are powered by switched-mode current pulses which travel back into the power source. If these unwanted harmonics become too large, the undesirable side effects include overheating that shortens the lifespan of motors, generators, and transformers, premature tripping of circuit breakers, and blown fuses. One of the fastest ways to detect and gauge the percentage of distortion due to harmonics is by measuring the harmonic ratio of the incoming AC voltage. You can perform this very easily on the U1242B/C handheld DMM, with just a button press. The percentage helps you to decide if further analysis of the power source is required with an oscilloscope or a spectrum analyzer.

Low impedance mode (Zlow)

Stray voltages are usually encountered in non-energized electrical wiring adjacent to powered wires due to capacitive or inductive coupling between these wires. The low impedance mode helps to reduce false readings by dissipating these stray voltages, thus improving safety and measurement efficiency during voltage measurement.

Vsense for non-contact voltage detection

Vsense is a unique method of non-contact voltage detection that safeguards users from exposure to hot or live wires while making measurements in dangerous working environments. Upon detection of high AC voltage, it produces a unique combination of beeping audio and blinking LED lights to alert users.

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 or to do so wirelessly with the optional Keysight Remote Link solution. 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.

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