Emerson Rosemount 644 Reference Manual page 48

Configuration
March 2021
2.11.4 Minimum/maximum tracking diagnostic
Minimum and maximum temperature tracking (min/max tracking) when enabled records
minimum and maximum temperatures with date and time stamps on Rosemount 644
HART Head Mount and Field Mount Temperature Transmitters. This feature records values
for Sensor 1, Sensor 2, Differential, Average, First Good, and Terminal temperatures.
Min/Max Tracking only records temperature maximum and minimum obtained since the
last reset, and is not a logging function.
To track maximum and minimum temperatures, Min/Max Tracking must be enabled using
a Field Communicator, AMS Device Manager, LOI, or other communicator. While enabled,
this feature allows for a reset of information at any time, and all variables can be reset
simultaneously. Additionally, each of the individual parameter's minimum and maximum
values may be reset individually. Once a particular field has been reset, the previous values
are overwritten.
Track minimum and maximum temperatures using a Field
Communicator
From the HOME screen, enter the Fast Key sequence.
Device Dashboard Fast Keys
Track minimum and maximum temperatures using AMS
Device Manager
Procedure
1. Right click on the device and select Configure.
2. In the left navigation window select Manual Setup.
3. On the Diagnostics tab, there is a group box labeled Sensor and Process
4. Follow the screen prompts to Enable and configure the settings for the diagnostic.
48
Diagnostics; select the button for Configure Min/Max Tracking.
2, 2, 4, 3, 5
Reference Manual
00809-0200-4728
Emerson.com/Rosemount