Prosonic 93 Cumulative Flow Reset and Clearing Operation Guide
Resetting and clearing the cumulative flow of the Prosonic 93 is a common operation in daily maintenance. Correctly understanding its display mechanism and operation steps can avoid data misreading and operational errors. This article is intended for engineering and technical personnel and procurement personnel, providing clear operational guidance.

Cumulative Flow Display Mechanism
The cumulative flow value of the Prosonic 93 consists of up to 7-digit floating-point numbers. When the cumulative amount exceeds 9,999,999, the instrument extends the display range through the OVERFLOW function. The effective total value is the cumulative amount displayed by the OVERFLOW function plus the value of the SUM function.
Overflow Value Calculation Example
The following example illustrates how to combine the OVERFLOW and SUM functions to read the true cumulative flow:
| Function | Value | Description |
|---|---|---|
| OVERFLOW | 2E7 dm³ | i.e., 20,000,000 dm³ |
| SUM | 196,845 dm³ | Current cumulative value |
| Effective total value | 20,196,845 dm³ | OVERFLOW + SUM |

Cumulative Flow Reset and Clearing Steps
Before performing reset and clearing, please confirm that the current cumulative value has been recorded to avoid losing important data. The operation steps are as follows:
- Enter the instrument main menu and select the "Cumulative Flow" or "Totalizer" option.
- Find the "Reset" function and press the confirm key to enter.
- The system prompts for reset confirmation; select "Yes" or "OK" to complete clearing.
- Check whether the SUM function display returns to zero and whether the OVERFLOW value is reset simultaneously.
Precautions
- The reset operation may affect historical data records; it is recommended to perform it during batch switching or maintenance.
- If the instrument is password-protected, the correct password must be entered first.
- After reset, the cumulative flow starts recalculating from zero.
Mastering the Prosonic 93 cumulative flow reset and clearing method can ensure accurate and reliable flow measurement. For more technical support, please refer to the product manual or contact the supplier.