YSI IQ SensorNet Sensors Encoded Fieldbus Data - Manual (Page 3)

IQ S ENSOR N ET Sensors: Encoded Data for Fieldbus Communication
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Fieldbus data of IQ S ENSOR N ET sensors
The IQ S ENSOR N ET monitors the current state of each sensor operated
on the system. The sensor status comprises sensor information (mea-
sured value status and status info of the sensor) and current processes
(e.g. calibration or cleaning).
The sensor status is superior to the measured value status.
The influence of the sensor status on the measured value is docu-
mented with the status descriptions.
When the measured value is analyzed, e.g. by a superordinate control
technology, the sensor status and measured value status must always
be evaluated as well.
A measured value is valid if the following two conditions are met:
1. Sensor status MEASURE
2. Measured value status VALID