JUMO flowTRANS MAG H01, Руководство по эксплуатации

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9 Advanced diagnostics functions
9 Advanced diagnostics functions
9.1 General Information
9.1.1 Partial filling detection
Optionally, a measuring electrode (TFE electrode) is available for detecting partial filling of the sensor.
The partial filling alarm is output via the programmable digital output.
Conditions for using the function:
• Nominal width as of DN 50 (2 inch) with the Design Level "B" sensor
• Maximum signal cable length in case of remote mount design type: 200 m (656 ft).
• For this function, the conductivity of the measurement medium must be between 20 µS/
cm and 20,000 µS/cm.
• The function is only available for JUMO flowTRANS S/H devices without Ex-protection or with Ex-
protection for zone 2.
Additional installation conditions:
• The sensor must be mounted horizontally with the connection box facing up.
9.1.2 Gas bubble detection
Gas bubbles in the measurement medium are detected by reference to a configurable maximum thresh-
old. When the threshold is exceeded, an alarm is triggered via the programmable output, depending on
the configuration.
Conditions for using the function:
• JUMO flowTRANS MAG S02:
The function is available in the nominal width range DN 10 to 300 (3/8 to 12 inch).
• JUMO flowTRANS MAG H02:
The function is available in the nominal width range DN 10 to 100 (3/8 to 4 inch).
• Maximum signal cable length in case of remote mount design type: 50 m (164 ft).
• For this function, the conductivity of the measurement medium must be between 20 µS/
cm and 20,000 µS/cm.
Additional installation conditions:
• The sensor can be mounted horizontally or vertically. Vertical mounting is preferable.
IMPORTANT (NOTE)!
• The advance diagnostics functions are only available with the JUMO flowTRANS S02/H02 devices.
• The "Partial filling detection" function is not available with the JUMO flowTRANS H02.
• When using the advanced diagnostics functions, note that a pre-amplifier must not exist on the ex-
ternal sensor.
• To facilitate initial startup, the advance diagnostics functions are disabled as the default setting.
• To use the advance diagnostics functions, a "Startup fingerprint" must be created on startup of the
flowmeter.
• Each diagnostics function (e.g. gas bubble detection or electrode deposit detection) can be enabled
individually. After activation, you need to calibrate to match the local conditions, and/or set the limit
values.