Viltrus Electronics MX-7, Руководство пользователя, Страница: 31 / 87

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Pic 20
Day light saving time “By date” [Time parameters]
7.2 Analog measurements [Analog inputs]
Data logger performed functions:
•
Analog signal (current) measurement,
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Filtering,
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Conversion into physical parameter value (Current value),
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Storing Data (average value during a set period),
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Alarming in case of deviation,
•
Calibration.
7.2.1 Configuration
Parameters:
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Channel usage,
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Current range,
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Filter averaging duration,
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Conversion into physical parameter range (“Min. value” and “Max. value”) ,
•
Alarm filter time,
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Alarm limits (upper and lower),
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Alarm case (Out of range, Out & return to range).
Data logger periodically (analog measurement perod 0.1 seconds) measures current of all Analog
channels and converts to physical value. User can chose from three (0-20mA, 4-20mA and 0-
5mA, with accuracy 0,005mA) measurement ranges (see Pic 21 ).
From current, using “Min. value” (float) and “Max. value” (float) range (formula:
) is
recalculated physical value.
Measured values can be filtered. For filtration is used liner filter – calculated average value of