2635A

Users Manual

The value returned should now be 90 mV ±0.028 mV (between 89.97 and 90.028 mV).

6.Change Hydra Series II's channel 0 function to the internal 900 mV dc range by redefining channel 0. Send the following commands:

MON 0 <CR>

FUNC 0,VDC,6 <CR>

Set the 5700A to output 0.9V dc. Send the following commands: MON 1,0 <CR>

MON_VAL? <CR>

The value returned should be 900 mV ±0.21 mV (899.79 to 900.21mV.)

Four-Terminal Resistance Test

Ensure that Channel 0's Accuracy Verification Test for DC Volts and Resistance meets minimum acceptable levels.

1.Switch OFF power to the instrument and disconnect all high voltage inputs.

2.Remove the Input Module from the rear of the instrument. Open the Input Module and connect a pair of test leads (keep as short as possible) to the H (high) and L (low) terminals of channel 1, and connect a second pair of test leads to the H and L terminals of channel 11. Reinstall the Input Module into the instrument.

3.Observing polarity connect channel 1's test leads to the Sense HI and LO terminals of the 5700A, and connect channel 11's test leads to the Output HI and LO terminals of the 5700A. Connect as shown in Figure 7-2.

4.Switch the instrument ON.

5.Select the Four-terminal OHMS function, AUTO range, for channel 1 on the Hydra Series II.

6.Set the 5700A to output the resistance values listed in Table 7-3 (Use decades of 1.9).

7.On Hydra Series II press Mand ensure the display reads between the minimum and maximum values shown on Table 7-3.

8.The Four-terminal Resistance Test is complete. However, if you desire to perform this test on Input Module channels (2 through 10), repeat steps 1 through 7, substituting the appropriate channel number.

Note

Four-Terminal connections are made using pairs of channels. Four- terminal measurements can be made only on channels 1 though 10 (n). The accompanying pairs are channels 11 through 20 (n+10).

Thermocouple Temperature Accuracy Test

Ensure that the Thermocouple Measurement Range Accuracy Test meets minimum acceptable levels before performing this test.

1.Switch OFF power to the instrument and disconnect all high voltage inputs.

2.Remove the Input Module from the rear of the instrument. Open the Input Module and connect a T-type thermocouple to the H (blue lead) and L (red lead) terminals of channel 1. Reinstall the Input Module into the instrument.

7-10

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Fluke 2635A user manual Four-Terminal Resistance Test, Thermocouple Temperature Accuracy Test
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2635A specifications

The Fluke 2635A is a highly advanced multichannel data acquisition system designed for engineers and technicians requiring precision and versatility in their measurement tasks. This instrument excels in monitoring and capturing data from various sources, making it a valuable tool in laboratories, production environments, and field applications.

One of the standout features of the Fluke 2635A is its ability to support up to 20 measurement channels. Users can simultaneously monitor multiple signals, which is crucial for complex testing scenarios where numerous variables need to be tracked. The device is equipped with a 6.5-digit precision measurement capability that ensures high accuracy and resolution in readings. This level of precision is particularly beneficial in applications such as environmental monitoring, research and development, and industrial process control.

The unit incorporates a variety of measurement modes, including voltage, current, temperature, and resistance, making it exceptionally versatile. The Fluke 2635A not only handles standard signals but also integrates with various transducers, providing extensive compatibility for users engaged in diverse testing applications.

To enhance data management, the Fluke 2635A offers advanced data logging capabilities. Data can be stored internally or transferred to external devices for further analysis. The internal memory can accommodate extensive datasets, which can be crucial in long-term monitoring tasks. Integration with external software enables users to analyze and visualize data effectively, allowing for informed decision-making based on comprehensive results.

The user interface is designed for ease of use, featuring a large, bright LCD display that clearly presents measurements and status information. The device is also equipped with a simple navigation system, allowing users to switch between channels and measurement types without hassle.

In terms of construction, the Fluke 2635A is built to withstand rigorous environments. It features a robust design that ensures reliability and durability, making it suitable for both laboratory settings and field operations. Furthermore, the device supports a wide temperature range, thus enabling usage in diverse conditions.

Overall, the Fluke 2635A is a powerful and flexible instrument that provides precise measurements across multiple channels, supporting a wide range of applications. Its advanced technology, combined with user-friendly features, makes it an essential tool for professionals in various fields. The combination of accuracy, flexibility, and durability solidifies its standing as a trusted choice for data acquisition and monitoring tasks.
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