Maintenance 6

Performance Test

Accuracy Performance Tests

6-8.

This accuracy performance test assumes you have completed "Initializing the Performance Test Setup" above. Do not begin this test until the instrument has been temperature stabilized for a minimum of 30 minutes. Do not use the instrument front panel monitor function for performance testing; use the higher resolution Spy window at the host computer, as specified in procedures. The Accuracy Performance Tests include the following:

Volts DC Accuracy Test

Volts AC Accuracy Test

Frequency Accuracy Test

Analog Channel Integrity Test

Computed Channel Integrity Test

Thermocouple Temperature Accuracy Test

Open Thermocouple Response Test

2-Wire Resistance Accuracy Test

4-Wire Resistance Accuracy Test

RTD Temperature Accuracy Test (Resistance Source)

RTD Temperature Accuracy Test (DIN/IEC 751 RTD Source)

Specific tests for current dc are not included since these functions are derived from volts dc.

Volts DC Accuracy Test (2640A)

6-9.

Complete the following procedure to test the accuracy of the volts dc function for the 2640A. Measurement accuracy applies to all channels, not just the channel used for the test.

1.Configure Channel 1 for Volts DC In NetDAQ Logger, configure channel 1 for volts dc, 90 mV range. (See "Configuring Analog Channel Functions" in Chapter 3 of this manual.)

2.Open Spy Window Select the Spy command from the Utilities menu. Select channel 0101 (instrument 01, channel 01) from the Channel list. Click OK to open the Spy window.

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Fluke 2645A user manual Accuracy Performance Tests, Volts DC Accuracy Test 2640A

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.