HYDRA

Service Manual

3-18. Remove the Main PCA

With the IEEE-488 option (2620A) and the Memory PCA (2625A) or Memory Card I/F PCA (2635A) removed, the Main PCA (H) can be removed. Parts referenced by letter (e.g., A) are shown in Figure 3-4 (2620A or 2625A) or Figure 3-5 (2635A). Use the following procedure:

1.If it is still attached, remove the green power switch activator rod (J) extending from the power switch on the Main PCA through the Front Panel Assembly. Squeeze the end of the rod at the power switch and lift up; the bar disengages smoothly from the switch.

2.Using needle nose pliers, disconnect the display ribbon cable (G) on the Main PCA

(H) by alternately pulling up on each end of its connector. Avoid breaking the alignment tabs on the Main PCA side of this connection. (This connector has already been detached if the Front Panel Assembly was removed.)

3.Detach the transformer connector at the Main PCA.

4.Detach the Main-to-A/D Converter cable at the A/D Converter PCA.

5.If installed, pull off the ALARM OUTPUTS and DIGITAL I/O terminal strips from the Rear Panel.

6.Remove the RS-232 connector screws (T) at the Rear Panel. Use a 3/16-inch nut driver to loosen the connector securing hardware.

7.If installed, remove the IEEE-488 connector. Use a 7-mm nutdriver to loosen the two securing screws on the rear panel.

8.Now remove the two screws (U) securing the Main PCA to the chassis. Slide the Main PCA forward. Then, while matching the pca edge indentations to the guide tabs on each chassis side, lift the Main PCA up and away from the chassis.

3-19. Remove the A/D Converter PCA

Use the following procedure to remove the A/D Converter PCA (V). Parts referenced by letter (e.g., A) are shown in Figure 3-4 (2620A or 2625A) or Figure 3-5 (2635A).

1.If necessary, remove the leads connecting the two front panel input terminals to the

A/D Converter PCA. Using needle nose pliers, pull and disconnect the wires at the rear of the VΩ (red) and COM (black) input terminals. (These leads are already disconnected if the Front Panel Assembly has been removed.)

2.At the A/D Converter PCA, detach the cable leading to the Main PCA.

3.From the Rear Panel, pull out the Input Module.

4.Remove the three Phillips head screws (W) securing the A/D Converter PCA to the chassis.

5.Now slide the A/D Converter PCA forward to match the indentations in the pca edges to the guides in the chassis. Then lift the pca out.

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Fluke 2635A, 2625A service manual Remove the Main PCA, Remove the A/D Converter PCA
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2635A, 2625A specifications

The Fluke 2625A is a sophisticated data logger designed for a wide range of industrial and laboratory applications. This versatile instrument excels in capturing and monitoring temperature and voltage measurements with precision and reliability. One of its standout features is its ability to record data from various sensors, making it ideal for environments where comprehensive data acquisition is critical.

Equipped with a large LCD display, the Fluke 2625A provides clear and user-friendly access to real-time measurement data. Its graphical interface allows users to visualize trends and monitor readings easily, which significantly enhances usability. The device supports a variety of input types and can connect to thermocouples, RTDs, and other sensors, offering great flexibility for various measurement tasks.

The Fluke 2625A employs advanced measurement technologies that ensure accuracy in data logging. With a high sampling rate, it captures fast-changing signals while maintaining data integrity. The device features a built-in memory that allows for extensive logging, accommodating long-term monitoring tasks without requiring constant oversight. Users can set it to log data at specified intervals, offering customizable solutions for different monitoring needs.

Another significant characteristic of the Fluke 2625A is its robust communication capabilities. The device supports USB and RS-232 interfaces for easy connectivity with computers and other devices, making data transfer and analysis seamless. This feature is especially beneficial for users who need to compile or analyze large sets of data quickly.

Furthermore, the Fluke 2625A is designed with durability in mind. Its rugged construction makes it suitable for challenging environments, including those with high levels of vibration, dust, or moisture. This reliability ensures that the device can withstand the rigors of fieldwork while still delivering accurate measurements.

In summary, the Fluke 2625A is a powerful data logger that combines versatility, accuracy, and reliability. Its user-friendly interface, advanced measurement technologies, and robust design make it an essential tool for professionals in various industries, from manufacturing and HVAC to research and development. Whether monitoring temperature changes in a laboratory or assessing voltage levels in an industrial setting, the Fluke 2625A stands out as a trusted solution for effective data logging and analysis.
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