Diagnostics and troubleshooting
EF200F-C
132
Diagnostic
number
Short text
Remedy instructions
Status
signal
[from the
factory]
Diagnostic
behavior
[from the
factory]
946
Vibration detected
Check installation
S
Warning
947
Vibration exceeded
Check installation
S
Alarm
1)
948
Signal quality bad
1. Check process conditions: wet
gas, pulsation
2. Check installation: vibration
S
Warning
972
Degrees of superheat
limit excceeded
1. Controll process conditions
2. Install pressure transmitter or
enter correct fixed pressure value
S
Warning
1)
1)
Diagnostic behavior can be changed.
12.4.1 Operating conditions for displaying the following diagnostics
information
Operating conditions for displaying the following diagnostics information:
• 871 Near steam saturation limit diagnostic message: The process temperature is
less than 2K from the saturated steam line.
• Diagnostics information 872: The measured steam quality has dropped below the
configured limit value for the steam quality (limit value: Expert → System
→ Diagnostic handling → Diagnostic limits → Steam quality limit).
• Diagnostics information 873: The process temperature is 侑 0
˚
C.
• Diagnostics information 874: Wet steam detection/measurement is outside the
specified limits for the following process parameters: pressure, temperature,
velocity.
• Pressure: 0.5 to 100 bar
• Temperature: +81.3 to +320
˚
C (+178.3 to +608
˚
F)
• Velocity: Depends on the measuring tube and is configured via EhDS.
• Diagnostics information 972: The degree of superheat has exceeded the configured
limit value (limit value: Expert → System → Diagnostic handling → Diagnostic limits
→ Degrees of superheat limit).
12.4.2 Emergency mode in the event of pressure compensation
Disable the pressure measuring cell: in the Disable pressure cell parameter (7747)
select the Yes option.
The measuring device uses the fixed process pressure to calculate.
12.4.3 Emergency mode in event of temperature compensation
Change temperature measurement: PT1+PT2 to the PT1 option, PT2 option or the Off
option.
If the Off option is selected, the measuring device calculates by using the fixed
process pressure.
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