Prosonic 93 System Unit Modification Overview
Prosonic 93 is an ultrasonic flowmeter from Endress+Hauser used for open channel and pipe flow measurement, supporting switching between multiple measurement units. During engineering commissioning or process changes, it is often necessary to modify the system units to match on-site standards. Based on the actual operating interface, this article explains the complete unit modification process.
Steps to Modify System Units
Enter the System Units Menu
Enter the main menu via the on-site display or commissioning software, and navigate in sequence to the unit options under System Setup. Menu names vary slightly between firmware versions, but are usually located under the path Setup → System → Units.
Select the Target Unit
- In the unit list, select the physical quantity category to be modified, such as length, volume, flow, or temperature.
- Use the arrow keys to switch to the target unit, for example, changing m³/h to L/s.
- Press the confirm key to save; the instrument will automatically perform the numerical conversion, with no manual calculation required.
Confirm and Exit
After modification is complete, return to the main interface and check whether the real-time displayed value matches expectations. It is recommended to record the unit settings before and after modification for future traceability.
Common Unit Options and Precautions
| Physical Quantity | Common Units | Application Scenario |
|---|---|---|
| Length/Level | m, cm, ft | Open channel level measurement |
| Volumetric Flow | m³/h, L/s, GPM | Pipe flow metering |
| Totalizer | m³, L, gal | Total quantity statistics |
| Temperature | ℃, ℉ | Temperature compensation |
- After modifying units, the totalizer value will not be reset automatically; if clearing is required, perform it separately.
- Some unit switches may affect alarm thresholds and output ranges, which need to be checked simultaneously.
- It is recommended to perform settings under empty pipe or stable operating conditions to avoid misjudgment.
Summary
The system unit modification operation of the Prosonic 93 is simple; the key is to enter the correct menu path and select units that match the process. After mastering the above steps, engineering personnel can quickly complete unit switching on site, ensuring that measurement data complies with project specifications.