List of Tables

Table	Title	Page
1-1.	Hydra Features	1-6
1-2.	Accessories	1-7
1-3.	2620A/2625A Specifications	1-8
1-4.	2635A Specifications	1-20
2-1.	Microprocessor Memory Map	2-11
2-2.	Option Type Sensing	2-14
2-3.	Programmable Input Threshold Levels	2-15
2-4.	Analog Measurement Processor Pin Descriptions	2-19
2-5.	Function Relay States	2-21
2-6.	AC Volts Input Signal Dividers	2-25
2-7.	Front Panel Switch Scanning	2-29
2-8.	Display Initialization Modes	2-32
2A-1.	Microprocessor Interrupt Sources (2635A)	2A-12
2A-2.	Booting Microprocessor Memory Map (2635A)	2A-13
2A-3.	Instrument Microprocessor Memory Map (2635A)	2A-13
2A-4.	Analog Measurement Processor Pin Descriptions (2635A)	2A-22
2A-5.	Function Relay States (2635A)	2A-24
2A-6.	AC Volts Input Signal Dividers (2635A)	2A-28
2A-7.	Front Panel Switch Scanning (2635A)	2A-33
2A-8.	Display Initialization Modes (2635A)	2A-36
4-1.	Recommended Test Equipment	4-3
4-2.	Performance Tests (Voltage, Resistane, and Frequency)	4-5
4-3.	Thermocouplt Information	4-10
4-4.	Performance Tests for Thermocouple Temperature Function	4-10
4-5.	Performance Tests for RTD Temperature Function (Resistance Source)	4-12
4-6.	Performance Tests for RTD Temperature Function (DIN/IEC 751)	4-13
4-7.	Digital Input Values	4-14
4-8.	Calibration Mode Computer Interface Commands	4-20
4-9.	DC Volts Calibration	4-23
4-10.	AC Volts Calibration	4-24
4-11.	4-Wire Ohms Calibration (Fixed Resistor)	4-27
4-12.	4-Wire Ohms Calibration (5700A)	4-28
4-13.	Frequency Calibration	4-29
5-1.	Error Codes	5-5
5-2.	Preregulated Power Supplies	5-6

vii

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.

Fluke 2625A, 2635A service manual List of Tables

Models: 2635A 2625A

List of Tables

Title

Analog Measurement Processor Pin Descriptions

2A-36

4-Wire Ohms Calibration (Fixed Resistor)

2635A, 2625A specifications