Preparation for Use 1

Measurement Capabilities

Measurement Capabilities

Before scanning is enabled, the Data Bucket channels are configured for measuring the selected electrical or physical parameter (volts dc, volts ac, temperature, etc.). Readings have five digits of resolution, for example, 15.388 VAC. Scanning collects measurement data, while the monitor mode can monitor a channel with or without scanning. The review mode stores the maximum, minimum and last readings. Mx+B scaling and alarm attributes can be applied to each configured channel. A totalizer channel is supplied as a separate feature, and digital I/O functions are provided by the rear panel connectors, ALARM OUTPUTS, and DIGITAL I/O.

Mx+B Scaling

The Mx+B scaling attribute allows readings to be modified to better represent what is being measured. The M represents a multiplier and B represents an offset. For example, a normal reading of 3 volts can be multiplied by M=+100 and offset by B=-25, to display 275 (3x100 - 25= 275). Mx+B scaling can be applied to any configured channel. This feature is especially useful to scale transducer outputs for exact measurement displays.

Alarms

The alarms attribute allows readings that rise or fall below preset levels to alert the operator and trigger an action. For example, if you are monitoring temperature and want to have 100ºC cause an alarm condition, this can be programmed as part of the channel configuration. Alarm conditions are reported as part of the measurement scan data and can be used to trigger scanning and assert a logic low on a rear panel ALARM OUTPUTS or DIGITAL I/O connector terminal for interface with external equipment. Two alarms can be assigned to any configured channel. If Mx+B scaling is applied, the alarms are based on the scaled values.

Totalizer Channel

The totalizer channel counts contact closures or voltage transitions. The maximum count is 65,535. The connection is at the rear panel ALARMS OUTPUTS connector, terminals SUM and GROUND. The Data Bucket continuously samples the totalizer input on the rear panel, independently from Hydra's scanning and other activities.

Alarm Outputs and Digital I/O

Alarm outputs are available on the rear panel ALARM OUTPUTS and DIGITAL I/O connectors. The four ALARM OUTPUT lines are permanently assigned to signal alarms for channels 0, 1, 2, and 3. The eight DIGITAL I/O lines can be used to signal alarm conditions for channels 4 to 20. All input/output lines are transistor-transistor-logic (TTL) compatible. For operations that do not use a computer interface, these are the only functions of the ALARM OUTPUTS and DIGITAL I/O connections. When a computer interface is used, the DIGITAL I/O lines can be assigned in the applications software for a variety of inputs or outputs. The ALARM OUTPUTS can also be assigned for I/O operations if the dedicated alarm function is not used (which has priority).

Applications Software

PC applications software Hydra Starter (supplied) and Hydra Logger Package (Logger) (optional) operate the instrument via the RS-232 computer interface. The software packages are described in separate technical manuals; however, each is summarized below.

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Fluke 2635A user manual Measurement Capabilities, Applications Software
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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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