RMS logger Battery change - best practice

[Jeremy Wingate]

Please follow the below guidance for battery replacement on RMS loggers.

1. If the logger is still active wait for the logger to log (indicated by an LED flash on the logger). This will reduce the chance of a data gap (by changing batteries between readings).
2. Remove the old batteries. Dispose of responsibly!
3. Press the button on the logger for 3 seconds. This discharges any energy in the logger and resets the battery level to 100%.
4. Fit new batteries. Ensure 3.6v batteries are used and note that batteries do have a shelf life!
5. DO NOT PRESS ANY BUTTONS and be careful with mini loggers to replace the cap without inadvertently holding the button down!
6. The logger will naturally reconnect to the RMS system typically within 5 - 10 measurement intervals. Battery status will update soon after but may require a browser refresh.

NOTE! You may not see live data initially. If you view the audit, trail > Messages and include finished events you may see Measurement time not valid events for this logger after the battery was replaced as RMS synchronises the clock following the batteries being removed. This is normal. Once synchronised the live data will return but you can expect a data gap to be created during this time.

Repeated 'Measurement time not valid' events is also a indicator that a device is operating on very low batteries (and will likely be in Timeout error).

Ensure devices have the latest compatible firmware. Latest firmware improves battery management and battery status.
(See here for firmware update advice) https://service.rotronic.com/forum/f...ms-mlog-update

[James]

https://service.rotronic.com/manual/maintenance17.html

[mbhatt]

What will be the outcome if the switch is pressed once accidentally? Should we expect the device to get connected to GW automatically or do we need to re-pair it manually?

[James]

If the button is pushed for too long, then the MLOG device may unpair from RMS.
In some cases, you may need to repair manually.