Fluke 2645A, 2640A user manual Cleaning, Fuse Replacement

Models: 2645A 2640A

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2640A/2645A NetDAQ

Users Manual

Cleaning

6-3.

Warning

Keep the instrument dry to avoid electrical shock to personnel or damage to the instrument. To prevent damage, never apply solvents to the instrument housing.

Wipe the instrument with a cloth lightly dampened with water or mild detergent. Do not use aromatic hydrocarbons, chlorinated solvents, or methanol-based fluids.

Fuse Replacement

6-4.

The instrument uses a 15/100 ampere, 250V, time delay line fuse in series with the power supply. To replace the fuse, refer to Figure 6-1 and the following procedure:

Warning

To avoid electrical shock, do not operate the instrument without the cover properly installed.

1.Disconnect all rear panel cables to the instrument power, Universal Input Module, and I/O connectors.

2.Invert the instrument on a protective surface and remove the four 1/4-inch 6-32 Phillips-head screws on the bottom of the case.

3.Turn the instrument upright and remove the two 1/2-inch 6-32 Phillips-head screws from the rear panel bezel.

4.Remove the rear panel bezel and case assembly. Do not touch any internal parts of the instrument!

5.Locate the fuse holder at the back of the chassis near the power input connector. Using a non-metallic tool, carefully pry the fuse from the holder.

6.Insert the new fuse into the holder. (You must use a 15/100 ampere, 250V time delay line fuse replacement.)

7.Reinstall the case to its original position (the front has two rubber feet).

8.Reinstall the rear panel bezel (rubber feet towards the bottom) and attach it with the two 1/2-inch 6-32 phillips-head screws.

9.Invert the instrument on the protective surface and reinstall the four 1/4-inch 6-32 screws on the bottom securing the case.

10.Reinstall the cables removed in Step 1.

6-4

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Fluke 2645A, 2640A user manual Cleaning, Fuse Replacement

2645A, 2640A specifications

The Fluke 2640A and 2645A are advanced bench multimeters that represent a significant leap in measurement technology, designed primarily for electrical engineers and technicians who require precision and reliability in their readings. These multimeters are built to cater to complex applications in manufacturing, research, and development.

One of the standout features of the Fluke 2640A and 2645A is their high accuracy. With specifications that can reach up to 0.0035% DC Voltage accuracy, users can trust that their measurements will be consistent and precise. This is especially critical in fields like automated test equipment (ATE) where exact measurements can be crucial for product quality and safety.

Both models incorporate a large, easy-to-read display, making it convenient for users to view measurement results clearly from a distance. They also feature a wide measurement range, capable of handling a variety of tasks, from basic voltage and current measurements to more complex tasks such as resistance and temperature measurements with appropriate sensors.

The multimeters also stand out with their advanced data logging capabilities. The Fluke 2645A, for instance, can store up to 10,000 readings, allowing for extensive data collection and analysis without the need for constant monitoring. This is beneficial for long-term studies or processes that require continual oversight.

Connectivity is another key characteristic. Both the 2640A and 2645A support USB and RS-232 interfaces, which enable easy integration with computers and other devices for seamless data transfer. This feature is important for engineers who rely on software for data analysis and visualization.

Another notable technology included in these models is the Fluke Connect app compatibility, which allows users to remotely monitor measurements from their smartphones or tablets. This capability provides added flexibility, enabling technicians to work hands-free while still keeping an eye on process measurements.

Additionally, the Fluke 2645A comes with a graphical display option, allowing users to visualize measurement trends over time. This graphical representation can be invaluable for diagnosing issues or observing patterns in data.

In conclusion, the Fluke 2640A and 2645A multimeters offer exceptional performance with their high accuracy, extensive data logging, connectivity options, and advanced visualization capabilities. These features make them indispensable tools for professionals in a variety of fields, ensuring that they can achieve reliable results in their measurement endeavors.