
Transmitter M400/2(X)H, M400G/2XH 84
© 03 / 2014 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter M400/2(X)H, M400G/2XH
Printed in Switzerland 30 031 683
Cal History
The calibration history is stored with a time stamp in the ISM sensor and is displayed on the
transmitter. The calibration history offers the following information:
Fact (Factory calibration): This is the original dataset, determined in the factory. This dataset re-
mains stored in the sensor for reference and cannot be overwritten.
Act (Actual adjustment): This is the actual calibration dataset which is used for the measure-
ment. This dataset moves to Cal2 position after the next adjustment.
1. Adj (First adjustment): This is the first adjustment after the factory calibration. This dataset re-
mains stored in the sensor for reference and cannot be overwritten
Cal1 (last calibration/adjustment): This is the last executed calibration/adjustment. This dataset
moves to Cal2 and then to Cal3 when a new calibration/adjustment is performed. Afterwards,
the dataset is not available anymore.
Cal2 and Cal3 acting in the same way as Cal1.
Definition:
Adjustment: The calibration procedure is completed and the calibration values are taken over
and used for the measurement (Act) and stated in Cal1. The current values from Act will move
to Cal2.
Calibration: The calibration procedure is completed, but the calibration values will not be over-
taken and the measurement continuous with the last valid adjustment dataset (Act). The dataset
will be stored under Cal1.
The calibration history is used for the estimation of the lifetime indicator for ISM sensors.
Press [ENTER] to exit from this display.
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Note: This function requires the correct setting of date and time during calibration and / or adjust-
ment tasks (see chapter 9.5 “Set date & time”).
Sensor monitoring (not available for Cond 4-e sensor)
The sensor monitoring shows the different diagnostics functions available for each ISM sensor.
The following information is available:
Lifetime Indicator: Shows an estimation of the remaining lifetime to ensure a reliable measure-
ment. The lifetime is indicated in days (d) and percentage (%). Fora description of the Lifetime
indicator, please see section 8.6 “ISM Setup”. For oxygen sensors, the lifetime indicator is relat-
ed to the inner-body of the sensor. If you want to bring the bar indicator on the screen, see chap-
ter 8.7.5 “ISM sensor monitoring” to activate ISM functions.
Adaptive Cal Timer: This timer shows a Adaptive Cal Timer, when the next calibration should be
performed to keep the best possible measurement performance. The Adaptive Cal Timer is indi-
cated in days (d) and percentage (%). For a description of the Adaptive Cal Timer, please see
section 8.6 “ISM Setup”.
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