How to Fix Magnetic Flowmeter Black Screen or White Screen

Imagine this: Your electromagnetic flowmeter suddenly displays a black or white screen, leaving your operations at a standstill. This unexpected issue can disrupt measurements and delay processes, causing frustration and potential downtime. But don’t worry — understanding the root causes and knowing how to troubleshoot these screen problems can quickly get your flowmeter back online. Let’s dive in!

 

No.1: Black Screen

Black screen of magnetic flowmeter means the display shows no content at all, the screen is black, and it may either display “no signal” or be completely unresponsive.

 

Possible Causes

• Power issues: The magnetic type flowmeter’s power is not connected, has poor contact, insufficient power, or a damaged power module, causing the screen to fail to display.
• Voltage abnormality: The flowmeter’s voltage is unstable or exceeds the working range, which may prevent the display from lighting up.
• Display failure: The display itself may be damaged, or there could be a circuit issue.
• System failure: A hardware fault inside the flowmeter (such as the main control board) may prevent data from being displayed.

 

No.2:White Screen

White screen of flowmeter means the display shows a white screen, or the screen is excessively bright, with no normal data being displayed.

 

Possible Causes

• Display driver failure: The driver circuit may malfunction, preventing the screen from displaying content correctly.
• Mainboard signal issues: The mainboard may be outputting incorrect display signals.
• Display damage: The LCD screen may have internal faults.
• System or software failure: The firmware or operating system may have malfunctioned, leading to display issues.
• Power issues: Insufficient supply current may cause flickering on the screen.

 

Both black and white screens are related to either the display module or power supply. Black screen is typically caused by power, connection issues, or hardware failure. White screen is more often related to driver circuits, signal output issues, or software failure.

Solutions

Check power supply: Confirm that the power is stable, meets requirements, and the power module is intact.

Check the connections: Verify if the connection between the display and the mainboard is loose or damaged.

Restart the device: Try restarting the flowmeter to rule out temporary software malfunctions.

Replace the display: If the display is damaged, it will need to be replaced with a new one.

Contact the manufacturer: If the issue is complex, it’s recommended to contact the manufacturer or a professional technician for repairs.

 

Contact us NOW if you have any other issues with the magflow meters.