5725A

Instruction Manual

How the 5700A and 5725A Communicate

4-10.

The 5725A and 5700A maintain all analog and digital communication over an external cable connected to subminiature D-type connectors on the back of each instrument. All in-guard (analog) signals, except B-VGRD, connect to relays that isolate the 5725A and 5700A whenever the 5725A is not in use.

Digital communication occurs over five out-guard (digital) 5700A lines, B-SCT, B-SCR, B+5V, B+5VCOM, and B-CINT*. The B+5V and B+5VCOM lines power the 5725A guard crossing and allow the 5725A to detect when the cable is disconnected. Lines B- SCT and B-SCR provide serial communication of data over an RS-232 type line. Optoisolators on the 5725A maintain the integrity of the guard. Line B-CINT* is a hardwire loop that allows the 5700A to detect a cable off or 5725A power off condition.

Description of the Out-Guard Lines (5725A Side)

4-11.

The following list describes the five 5725A out-guard lines:

B-RCV (Serial Communication Receive)

Receives serial data from the 5700A; connects to the B-SCT line of the 5700A.

B-XMIT (Serial Communication Transmit)

Transmits serial data to the 5700A; connects to the B-SCR line of the 5700A.

B+5V

5700A out-guard supply that powers optoisolators and 5725A CABLEOFF relay.

B+5VCOM

5700A out-guard supply common for above.

B-CINT* (Boost Cable Interlock)

Hardwire "loop around system" on the 5725A that is polled at least every 100 ms by the 5700A to determine if the 5700A/5725A cable is connected and if the 5725A is turned on. Returns a low to the 5700A if above is true. A pull-up resistor on the 5700A leaves this line high if the interconnect cable is open or if the 5725A is turned off.

4-8

Page 66
Image 66
Fluke instruction manual How the 5700A and 5725A Communicate, Description of the Out-Guard Lines 5725A Side

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.