Overview of Promass 80 Empty Pipe Detection

Promass 80 is a Coriolis mass flowmeter introduced by Endress+Hauser, widely used for precise measurement of liquids and gases. Its empty pipe detection function can monitor in real time whether the pipe is full of medium, preventing measurement errors or equipment damage caused by an empty pipe.

When the pipe is empty, the flowmeter outputs an alarm or switches to safe mode to ensure process safety. This function is especially important for applications such as batch control and pump protection.

Promass 80 empty pipe detection interface

How to Enable Promass 80 Empty Pipe Detection

Setup Steps

  1. Enter the transmitter main menu and select the "Setup" or "Diagnostics" option.
  2. Find the "Empty Pipe Detection" parameter, usually located under "System Parameters" or "Process Parameters".
  3. Set the empty pipe detection function to "On".
  4. Adjust the detection sensitivity or response time according to process requirements.
  5. Save the settings and exit the menu.

Note: The menu structure of different Promass 80 versions may vary slightly. Please refer to the corresponding manual.

Empty pipe detection parameter setup

Empty Pipe Detection Parameter Description and Recommended Values

ParameterDescriptionRecommended Value
Detection ModeSelect the trigger condition for empty pipe detectionMedium density threshold
Density ThresholdBelow this density, it is determined as empty pipe0.5 g/cm³ (depending on medium)
Response TimeTime from detecting empty pipe to outputting alarm1-5 seconds
Alarm TypeAlarm output methodFault alarm or warning

Common Issues and Precautions

  • Empty pipe detection is based on medium density or conductivity, so ensure stable medium characteristics.
  • If the medium easily generates bubbles, it may falsely trigger an empty pipe alarm; sensitivity can be appropriately reduced.
  • Regularly verify the density threshold to avoid misjudgment caused by medium changes.
  • In applications such as batch loading, empty pipe detection can prevent the pump from running dry and extend equipment life.

Correctly enabling Promass 80 empty pipe detection can significantly improve measurement reliability and process safety.