LabVIEW drivers - Ritter gas meter

Ritter gasmeter

Obviously the Ritter gas meter itself cannot be connected to a computer. However, using the Electronic Display Unit (EDU) 32 FP this can be achieved. The values as displayed on the EDU can be read by a computer through a RS-232 connection.

Principle

Communication with a Ritter EDU works like this:

• open the serial connection
• optionally read the EDU settings (e.g. selected gas meter and the power status)
• optionally reset the EDU (e.g. reset the accumulated volume)
• at fixed time intervals read the actual flow and the accumulated volume
• close the serial connection

Downloads

ritter.zip
This file contains:

• ritter init.vi
  This VI opens the serial connection.
• ritter flow.vi
  This VI reads the current flow.
• ritter volume.vi
  This VI reads the accumulated volume.
• ritter close.vi
  This VI closes the serial connection.
• ritter sample 1.vi
  

  This VI shows how to use the basic set of driver VIs with a Ritter Electronic Display Unit 32 FP.

• ritter profile.vi
This VI returns the settings of the EDU e.g. the selected gas meter and the power status.
• ritter reset.vi
This VI resets the accumulated volume to 0.
• ritter sample 2.vi
  This VI shows how to use the full set of driver VIs with a Ritter Electronic Display Unit 32 FP.

Remarks

• All VIs have been made with LabVIEW 8.5.1
• This driver only includes the commands for normal operation, not those for setting up the EDU 32 FP