Troubleshooting Guide for a Flow Sensor That is Not Working

Flow Sensors are essential components in many industrial processes, as they provide crucial information about the rate of flow of liquids or gases. When a flow sensor is not working properly, it can Lead to inaccurate measurements, which can have serious consequences for the efficiency and Safety of the system. In this article, we will discuss some common reasons why a flow sensor may be inoperable and provide troubleshooting tips to help you get it back up and running.


One of the most common reasons why a flow sensor may not be working is due to a blockage in the flow path. This can occur when debris or sediment builds up in the sensor, preventing the flow of the liquid or gas through the sensor. To troubleshoot this issue, you should first check the flow path for any obstructions and clean the sensor if necessary. You may also need to check the filter or strainer in the system to ensure that it is not clogged.

Another possible reason for a flow sensor to be inoperable is a faulty electrical connection. If the sensor is not receiving power or if there is a loose connection, it will not be able to accurately measure the flow rate. To troubleshoot this issue, you should check the wiring connections to ensure that they are secure and that there are no breaks or frays in the wires. You may also need to check the power source to ensure that it is supplying the correct voltage to the sensor.

In some cases, a flow sensor may not be working due to a calibration issue. If the sensor is not calibrated correctly, it may provide inaccurate measurements. To troubleshoot this issue, you should check the calibration settings on the sensor and make any necessary adjustments. You may also need to recalibrate the sensor using a calibration kit to ensure that it is providing accurate readings.

If you have checked for blockages, verified the electrical connections, and calibrated the sensor, but it is still not working, there may be a more serious issue at play. It is possible that the sensor itself is faulty and needs to be replaced. Before replacing the sensor, you should consult the manufacturer’s guidelines and troubleshooting tips to ensure that you have exhausted all other possible solutions.

ROS-8600 RO Program Control HMI Platform
Model ROS-8600 Single Stage ROS-8600 Double Stage
Measuring range Source water0~2000uS/cm Source water0~2000uS/cm
\\u3000 First level effluent 0~200uS/cm First level effluent 0~200uS/cm
\\u3000 secondary effluent 0~20uS/cm secondary effluent 0~20uS/cm
Pressure sensor(optional) Membrane pre/post pressure Primary/ secondary membrane front/rear pressure
pH Sensor(optional) —- 0~14.00pH
Signal collection 1.Raw water low pressure 1.Raw water low pressure
\\u3000 2.Primary booster pump inlet low pressure 2.Primary booster pump inlet low pressure
\\u3000 3.Primary booster pump outlet high pressure 3.Primary booster pump outlet high pressure
\\u3000 4.High liquid level of Level 1 tank 4.High liquid level of Level 1 tank
\\u3000 5.Low liquid level of Level 1 tank 5.Low liquid level of Level 1 tank
\\u3000 6.Preprocessing signal\\u00a0 6.2nd booster pump outlet high pressure
\\u3000 7.Input standby ports x2 7.High liquid level of Level 2 tank
\\u3000 \\u3000 8.Low liquid level of Level 2 tank
\\u3000 \\u3000 9.Preprocessing signal
\\u3000 \\u3000 10.Input standby ports x2
Output control 1.Water inlet valve 1.Water inlet valve
\\u3000 2.Source water pump 2.Source water pump
\\u3000 3.Primary booster pump 3.Primary booster pump
\\u3000 4.Primary flush valve 4.Primary flush valve
\\u3000 5.Primary dosing pump 5.Primary dosing pump
\\u3000 6.Primary water over standard discharge valve 6.Primary water over standard discharge valve
\\u3000 7.Alarm output node 7.Secondary booster pump
\\u3000 8.Manual standby pump 8.Secondary flush valve
\\u3000 9.Secondary dosing pump 9.Secondary dosing pump
\\u3000 Output standby port x2 10.Secondary water over standard discharge valve
\\u3000 \\u3000 11.Alarm output node
\\u3000 \\u3000 12.Manual standby pump
\\u3000 \\u3000 Output standby port x2
The main function 1.Correction of electrode constant 1.Correction of electrode constant
\\u3000 2.Overrun alarm setting 2.Overrun alarm setting
\\u3000 3.All working mode time can be set 3.All working mode time can be set
\\u3000 4.High and low pressure flushing mode setting 4.High and low pressure flushing mode setting
\\u3000 5.The low pressure pump is opened when preprocessing 5.The low pressure pump is opened when preprocessing
\\u3000 6.Manual/automatic can be chosen when boot up 6.Manual/automatic can be chosen when boot up
\\u3000 7.Manual debugging mode 7.Manual debugging mode
\\u3000 8.Alarm if communication interruption 8.Alarm if communication interruption
\\u3000 9. Urging payment settings 9. Urging payment settings
\\u3000 10. Company name,website can be customized 10. Company name,website can be customized
Power supply DC24V\\u00b110% DC24V\\u00b110%
Expansion interface 1.Reserved relay output 1.Reserved relay output
\\u3000 2.RS485 communication 2.RS485 communication
\\u3000 3.Reserved IO port, analog module 3.Reserved IO port, analog module
\\u3000 4.Mobile/computer/touch screen synchronous display\\u00a0 4.Mobile/computer/touch screen synchronous display\\u00a0
Relative humidity \\u226685% \\u226485%
Environment temperature 0~50\\u2103 0~50\\u2103
Touch screen size 163x226x80mm (H x W x D) 163x226x80mm (H x W x D)
Hole Size 7 inch:215*152mm(wide*high) 215*152mm(wide*high)
Controller size 180*99(long*wide) 180*99(long*wide)
Transmitter size 92*125(long*wide) 92*125(long*wide)
Installation method Touch screen:panel embedded; Controller: plane fixed Touch screen:panel embedded; Controller: plane fixed

In conclusion, a flow sensor that is not working can cause serious disruptions to industrial processes. By following the troubleshooting tips outlined in this article, you can identify and resolve common issues that may be causing the sensor to be inoperable. Remember to check for blockages, verify electrical connections, calibrate the sensor, and consult the manufacturer’s guidelines before considering replacing the sensor. With proper maintenance and troubleshooting, you can ensure that your flow sensor is functioning correctly and providing accurate measurements for your system.