Power-on errors
When powered on, the ultrasonic flowmeter automatically starts the self-diagnosis process to find if there are any hardware and software problems. If a problem is identified, an error message will be displayed. The following table shows the possible error messages, the corresponding causes, and their solutions.
| Error message | Causes | Solutions |
| ROM Testing Error Data Testing Error |
Problem with the software | (1)Reboot the system (2)Contact the manufacturer. |
| Data Storing Error | User-entered parameters get lost. | When this message is displayed, press ENT key to restoring the default configuration. |
| System Clock Slow or Fast Error | Problem with the system clock or the crystal oscillator. |
(1)Power on again (2)Contact the manufacturer |
| Date Time Error | Problem with the system calendar | Initialize the calendar in menu window M61 |
| Reboot repetitively | Hardware problems | Contact the manufacturer |
Working Status errors
The ultrasonic flow meter will show an Error Code (a single letter like I, R, etc.) in the lower right corner on menu windows M00, M01, M02, M03, M90, and M08. When any abnormal Error Code shows, counter-measures.
| Error code |
The message displayed on window M08 | Causes | Solutions |
| R | System Normal | No error | |
| I | No Signal | (1)Unable to receive signals (2)Transducers installed improperly (3)Loosen contact or not enough coupling between transducer and pipe outer surface. (4)Pipeliners are too thick or the deposition inside of the pipe is too thick. (5)Transducer cables are not properly connected |
(1) Adjust measuring location (2)Polish the pipe surface and clean the spot (3)Make sure the couplant is enough (4)Check the transducer cables |
| J | Hardware Error | Hardware problem | Contact the manufacturer |
| H | PoorSig Detected | (1)Poor signal detected (2)Transducers installed improperly (3)Too much fouling (corrosion, deposition, etc.) (4)The pipe liner is too thick. (5)Problem with transducer cables |
(1)Adjust measuring location (2)Polish the pipe surface and clean the spot (3)Make sure the couplant is enough (4)Check the transducer cables |
| Q | Frequ OutputOver | The actual frequency for the Frequency Output is out of the range specified by the user |
Check the values entered in the window M66, M67, M68, and M69, and use a larger value in M69 |
| F | System RAM Error Date Time Error CPU or IRQ Error ROM Parity Error |
(1) Temporary problems with RAM, RTC (2) Permanent problems with hardware |
(1) Turn on the power again (2) contact the manufacturer |
| 123 | Adjusting Gain | The instrument is in the progress of adjusting the gain for the signal, and the number indicates the progressive steps |
No need for action |
| K | Empty pipe | No liquid inside the pipe Incorrect setup in M29 |
Relocate the meter to where the the pipe is full of liquid Enter 0 in M29 |
Other Problems and Solutions
Q: Why the instrument displays a 0.0000 flow rate while the liquid in the pipe is actually flowing? The signal strength is checked to be good (the working status is “R”) and the signal quality Q has a satisfactory value.
A: The problem is likely to be caused by the incorrect “Zero Point” setting. The user may have conducted the “Zero Point” setup while the flow was not standstill. To solve this problem, use the ‘Reset Zero’ function in the menu window M43 to clear the zero point.
Q: The displayed flow rate is much lower or much higher than the actual flow rate in the pipe under normal working conditions. Why?
A: The entered offset value might be wrong. Enter ‘0’ offset in window M44. Incorrect transducer installation. Re-install the transducers carefully. ‘Zero Point’ is wrong. Go to window M42 and redo the “Zero Point” setup. Make sure that the flow inside the pipe is standstill. No velocity is allowed during this setup process.
Q: Why the battery can not work as long as the time indicated on M07?
A: The battery may have come to the end of its service life. Replace it with a new one. The new battery is not compatible with the battery estimating software. The software needs to be upgraded. Please contact the manufacturer. The battery has not been fully charged. There is indeed a time difference between the actual working time and the estimated one, especially when the terminal voltage is in the range from 3.70 to 3.90 volts. Therefore, the estimated working time is for reference only