What is a typical benefit of safe device replacement with a compatible device and readdressing in HART networks?

• A. Preserve calibration and tag, reducing downtime
• B. Increase complexity
• C. Increase device cost
• D. Only applies to old devices

Answer: (B)

In safe device replacement on HART networks, using a compatible replacement and readdressing keeps the device’s calibration data and asset tag intact while restoring communication with the same network address. The new device can inherit or be quickly configured with the same calibration parameters and identification, so there’s no need for full re-calibration or re-tagging procedures, and the control system continues to see the device in its original place in the loop. This directly reduces downtime because the swap-and-verify steps are faster and the historical data, alarms, and process trends remain consistent with the previous device.

The other options describe downsides rather than benefits: increasing complexity is not the intended advantage, and this approach is not primarily about higher cost or applying only to old devices.