KROHNE OPTIMASS with MFC 300 EN - Manual (Page 131)

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11.2 Functional Tests and Troubleshooting
Min. and Max. recorded temperature (menu C1.9.1 & C1.9.2):
Records the maximum values of temperature and strain as experienced by the transducer.
Application problems that appear to be Transducer Faults
• Leaky Valves will cause high zeros
• Entrained Air/gas will cause high energy levels and high zero
• Product coating on the inside of the tube will cause high/low density and high zero
The following faults have occurred (listed below with their symptoms):
Beware:
Application problems can cause similar symptoms, check this first!
Tube bore slightly eroded or corroded
• Density Low
• Frequency High
• Small Mass Flow Errors
Tube eroded or corroded through (fluid in housing)
• Tube will not start
• If fluid conductive - low resistance to ground
Open Circuit Drivers, Sensors, RTD’s and Strain Gauges
• Detectable with Ohm meter
Operating
Temperature
Range
Minimum Maximum
OPTIMASS 7000 (Titanium) -40 °C or –40°F 150°C or 302°F
OPTIMASS 7000 (Hastelloy) 0°C or 32°F 100°C or 212°F
OPTIMASS 7000
SS Optional
0°C or 32°F
100°C or 212°F
130°C or 266°F
OPTIMASS 1000 -40 °C or –40°F 130°C or 266°F
OPTIMASS 3000
SS or Hastelloy
–30 °C or –22°F 150°C or 302°F
OPTIMASS 8000 *
(Depending on variant)
–180 °C or –292°F 230°C or 446°F
OPTIMASS 9000 0°C or 32°F 350°C or 662°F
OPTIMASS 2000 –44 °C or –99°F 130°C or 266°F