Overview of Changing System Units for Promag 53 and Prosonic 93
In industrial flow measurement, the Promag 53 electromagnetic flowmeter and the Prosonic 93 ultrasonic flowmeter are widely used instruments from Endress+Hauser. Depending on process requirements or display conventions, it is sometimes necessary to change the system units. This article will guide you step by step through the unit change operation.
Preparation Before Changing Units
Safety Precautions
- Ensure the instrument is in a non-measuring state or isolated to avoid affecting process control due to incorrect operation.
- Record the current unit settings so they can be restored if needed.
- Confirm that you have permission to access the instrument setup menu (usually requires a password).
Required Tools
- Instrument operating manual (optional)
- Local operator or commissioning software (such as FieldCare, DeviceCare)
Steps for Changing System Units on Promag 53
Operation via Local Display
- Press the "E" key to enter the main menu.
- Use the "+" or "-" keys to select the "Setup" menu, then press "E" to confirm.
- Select the "System units" option and press "E" to confirm.
- Select the unit category to be changed (e.g., volume flow, mass flow, etc.).
- Select the target unit from the list and press "E" to confirm.
- Press "E" to save the settings and return to the measurement screen.
Operation via Commissioning Software
- Connect the commissioning software to the instrument.
- Open the device configuration and find the "System units" parameter group.
- Modify the corresponding unit parameters.
- Download the changes to the instrument.
Steps for Changing System Units on Prosonic 93
Operation via Local Display
- Press the "E" key to enter the main menu.
- Select the "Setup" menu and press "E" to confirm.
- Select the "System units" option and press "E" to confirm.
- Select the unit category to be changed (e.g., volume flow, distance, etc.).
- Select the target unit from the list and press "E" to confirm.
- Press "E" to save the settings and return to the measurement screen.
Operation via Commissioning Software
- Connect the commissioning software to the instrument.
- Open the device configuration and find the "System units" parameter group.
- Modify the corresponding unit parameters.
- Download the changes to the instrument.
Precautions and Common Issues for Unit Changes
Precautions
- After changing units, check whether the measured values are reasonable and recalibrate if necessary.
- Some unit changes may affect totalizers or alarm settings; please verify carefully.
- If the instrument is used for trade settlement, unit changes must comply with relevant regulations.
Common Issues
- Unable to change units: May be due to password protection or hardware limitations; please contact the supplier.
- Incomplete unit list: The instrument model or firmware version may not support certain units.
- Abnormal display after change: Try restarting the instrument or restoring factory settings.
Examples of Unit Categories and Available Units
| Unit Category | Available Units for Promag 53 | Available Units for Prosonic 93 |
|---|---|---|
| Volume Flow | m³/h, L/min, US gal/min, etc. | m³/h, L/min, US gal/min, etc. |
| Mass Flow | kg/h, t/h, lb/min, etc. | kg/h, t/h, lb/min, etc. |
| Total Volume | m³, L, US gal, etc. | m³, L, US gal, etc. |
| Distance/Level | Not applicable | m, ft, inch, etc. |
By following the above steps, you can easily complete the system unit change for the Promag 53 and Prosonic 93. If you have any questions, please refer to the instrument manual or contact technical support.