How did you test PR55-45L probe cable lengths? What metrics?

What is the approach you used, and what do you suggest, for testing how long of an extension cable (m12 five pin shielded) for the PR55-45L sensor will work reliably? What metrics did you test for/measure or do you suggest one measures and tests for?

The primary unit contains a CPU, and the probe tip is equipped with a sensor. If there are any communication issues, the microcontroller unit (MCU) will fail to receive a response from the sensor, signaling an error. If you consistently receive accurate readings throughout a 24-hour test without missing any data, this indicates that the system is functioning correctly.