Endress+Hauser iTHERM TrustSens TM371, Руководство по эксплуатации

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Commissioning iTHERM TrustSens TM371, TM372
28 Hauser
Relevant self-calibration data for creating a report
Device information
Operating time Use this function to display the total count of hours when the device was
powered.
Stored self-calibration points Displays the amount of all stored self-calibration points. This device is
able to store 350 self-calibration points. As soon as the memory would
reach its limit, the oldest self-calibration point will be overwritten.
Requested self-calibration point Enter the number of the requested self-calibration point. The latest self-
calibration point always has the number
"1" .
Calibration point data
Calibration ID Use this number to identify a self-calibration point. Each number is
unique and is not editable.
Self-calibration status This function shows the validity of the self-calibration point data.
Operating hours This function displays the value of the operating hours counter of the
shown self-calibration point.
Measured temperature value This function displays the measured Pt100 temperature value at that
specific time of the self-calibration.
Deviation This function displays the measured Pt100 self-calibration deviation from
the reference temperature. The deviation is calculated as follows:
Self-calibration deviation = reference temperature - measured Pt100
temperature value + adjustment
Adjustment This function displays the adjustment value added to the measured Pt100
value. This influences the self-calibration deviation. →  80
New adjustment = Adjustment - deviation of last self-calibration point
Measurement uncertainty This functions displays the maximum measurement uncertainty at the
self-calibration temperature.
Lower alarm value This function displays the defined lower alarm limit value. →  81
Upper alarm value This function displays the defined upper alarm limit value. →  81
Device restart counter Displays the device restarts between now and when the displayed self-
calibration was executed.
8.5 Protecting settings from unauthorized access
Use this function to protect the device from unwanted changes.
Navigation
Expert menu → System → Administration → Define device write protection code
If the code is programmed into the device firmware it is saved in the device and the
operating tool displays the value 0 so that the defined write protection code is not openly
displayed for viewing.
User entry: 0 to 9 999
Factory default: 0 = write protection is not active.
To activate the write protection please go through the following steps:
1. Define a write protection in the Enter access code parameter.
2. Enter a code which does not correspond the the one which is defined in step 1.
 The device is now write protected.