Introduction and Specifications 1

Resistance Specifications

Nominal Value

Table 1-12. Current Derating Factors

Value of Derating Factor K for Over or Under Current

Ω

SHORT 1 1.9 10 19 100 190

1k

1.9 k

10k

19k

100k

190k

1M

1.9 M

10M

19M

100M

Two-Wire Comp

I < IL

[Note 1]

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

5000

5000

Four-Wire

I < IL

[Note 1]

0.3

300

160

30

16

3.5

2.5

0.4

0.4

50

50

7.5

4.0

1.0

0.53

0.2

0.53

0.1

Four-Wire

IU < I < Imax

[Note 2]

-5

4 x10

-4

1.5 x 10

-3

1.6 x 10

-3

3 x 10

-2

1 x 10

-2

1.9x 10

3.8

-5

2 x 10

-5

3.8 x 10

-4

1.5 x 10

-4

2.9 x 10

-3

1 x 10

-3

1.9x 10

Notes:

1.For I < I L, errors occur due to thermally generated voltages within the 5720A. Use the following equation to determine the error, and add this error to the corresponding uncertainty or stability

specification.

Error = K(I L - I)/( I L x I)

Where: Error is in mΩ for all two-wire comp values and four-wire short, and in ppm for the remaining four-wire values.

K is the constant from the above table;

I and IL are expressed in mA for short to 1.9 kΩ;

I and IL are expressed in μA for 10 kΩ to 100 MΩ

2.For IU < I < IMAX errors occur due to self-heating of the resistors in the calibrator. Use the following equation to determine the error in ppm and add this error to the corresponding uncertainty or stability

specification.

2 2

Error in ppm = K(I -IU)

Where: K is the constant from the above table;

I and IU are expressed in mA for short to 19 kΩ;

I and IU are expressed in μA for 100 kΩ to 100 MΩ

1-19

Page 35
Image 35
Fluke 5725A Current Derating Factors, Value of Derating Factor K for Over or Under Current, Two-Wire Comp, Four-Wire

5725A specifications

The Fluke 5725A is a high-performance, multifunctional temperature calibration source designed to meet the demanding requirements of laboratory and industrial environments. Renowned for its accuracy, reliability, and versatility, the 5725A serves as a powerful tool for engineers and technicians engaged in temperature calibration processes.

At the core of the 5725A is its advanced measurement technology, which allows for precision temperature calibrations across a wide range. With an operating temperature range from -200°C to 660°C, it caters to various applications, making it suitable for calibrating thermocouples, resistance temperature detectors (RTDs), and other temperature measurement devices.

One of the standout features of the Fluke 5725A is its outstanding accuracy, boasting a specified uncertainty of just ±0.15°C. This level of precision ensures that users can maintain compliance with regulatory standards and regulatory requirements in fields such as aerospace, pharmaceuticals, and manufacturing.

The Fluke 5725A is equipped with dual-channel capabilities, allowing users to calibrate two devices simultaneously. This enhances productivity by minimizing downtime and optimizing workflow efficiency. The intuitive touchscreen interface simplifies operations, enabling users to view measurements, set up test parameters, and access historical data with ease.

Versatile connectivity options such as USB and Ethernet enable seamless integration into existing systems and allow for data transfer, remote control, and configuration. This feature empowers technicians to conduct calibrations efficiently, whether on-site or remotely.

The robust design of the Fluke 5725A ensures its durability in demanding environments. Built with high-quality materials, it is resistant to shocks and vibrations, making it suitable for use in manufacturing plants and laboratories where equipment may be subjected to harsh conditions.

Another notable characteristic of the 5725A is its ability to generate stable temperature outputs with minimal drift, contributing to consistency in calibration results. Its built-in self-test functionality helps ensure that the unit remains in peak operating condition, giving users confidence in their calibration processes.

In summary, the Fluke 5725A is a top-tier temperature calibration source that excels in accuracy, reliability, and user-friendliness. Whether in laboratory settings or industrial applications, its advanced technologies and features make it an essential tool for professionals tasked with maintaining precision in temperature measurements.