Endress+Hauser Proline Prowirl F 200

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Proline Prowirl F 200 PROFIBUS PA Diagnostics and troubleshooting

Endress+Hauser 145

12.5 Overview of diagnostic information

The amount of diagnostic information and the number of measured variables affected

increase if the measuring device has one or more application packages.

In the case of some items of diagnostic information, the diagnostic behavior can be

changed. Change the diagnostic information →  141

Operating conditions for displaying the following diagnostics information:

• Diagnostics information 871: 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" menu → System

→ Diagnostic handling → Diagnostic limits → Steam quality limit).

• Diagnostics information 873: The process temperature is ≤ 0 °C.

• Diagnostics information 874: Wet steam detection/measurement is outside the

specified limits for the following process parameters: pressure, temperature,

velocity.

• Diagnostics information 972: The degree of superheat has exceeded the configured

limit value (limit value: "Expert" menu → System → Diagnostic handling → Diagnostic

limits → Degrees of superheat limit).

12.5.1 Diagnostic of sensor

Diagnostic information Remedy instructions Influenced measured

variables

No. Short text

004 Sensor defective 1. Check plug connections

2. Change pre-amplifier

3. Change DSC sensor

• Calculated saturated

steam pressure

• Density

• Energy flow

• Flow velocity

• Heat flow difference

• Low flow cut off

• Mass flow

• Total mass flow

• Switch output status

• Pressure

• Reynolds number

• Specific volume

• Corrected volume flow

• Steam quality

• Degrees of superheat

• Volume flow

Measured variable status

Quality Bad

Quality substatus Maintenance alarm

Coding (hex) 0x24 to 0x27

Status signal F

Diagnostic behavior Alarm