Extended diagnostic functions
132 FEX300, FEX500 OI/FEX300/FEX500-EN
8.1.7 Trend
The device has an internal memory where the measured value for the electrode deposits and
the conductivity are cyclically stored as a data record with an adjustable time
(1 min ... 45000 min). A maximum of 12 data records is stored. When the thirteenth record is
stored, the oldest data record is overwritten automatically.
The data records can be read out or analyzed as a trend using the external diagnostic tool
(ScanMaster).
8.1.8 Fingerprint
The “fingerprint” database integrated in the transmitter allows you to compare the values at the
time of factory calibration or commissioning with the currently recorded values.
8.1.9 Checking the grounding
This function allows you to check the electrical grounding of the device.
While the check is in progress, no flow measurement can take place.
Conditions for using the function:
• The measuring tube must be completely full.
• No flow must be occur in the flowmeter sensor.
Additional installation conditions:
• The flowmeter sensor must not be provided with a preamplifier.
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