“Why did my heart rate sensor fail?”
Most pulse output flowmeters use a rotating element with internal magnets. These magnets activate a solid state sensor that gives a pulse output proportional to the flow rate of the liquid.
Titan Enterprises Ltd.who has been designing and manufacturing flowmeters for more than 40 years, explains some of the reasons why these sensors can be damaged and what can be done to prevent damage that can lead to costly repairs and downtime.
High-quality Hall-effect sensors are commonly used in Titan’s flow measurement devices for pulse accuracy. The sensors work between 4.0Vdc and 30Vdc, but there are a number of scenarios that will cause it turbine and Oval gear the flowmeters are damaged, even though the installer considers that the flow device is installed correctly.
If the flow sensor fails, it may be for one of the following reasons:
- Improper wiring: Care must be taken when connecting the sensor power supply and the pulse output of the flow meter. The sensor cannot cope with improper wiring – reverse polarity or short circuit can lead to sudden, complete and permanent damage to the sensor.
- Unregulated power supply: Exceeding the maximum 30Vdc to the Hall effect sensor will damage the device. Regulated good quality DC a power supply is recommended to power the pulse flow meter.
- Electrical disturbances / voltages: Other connected equipment containing inductors or solenoid components (such as solenoid valves or pumps) may cause high voltage peaks when switching. These peaks can be from one hundred to thousands of volts and if they are in the same circuit, they will damage the flowmeter sensor without repair.
Electrical interference can occur even without a direct connection if the cables are routed near high-power equipment.
A fault mode that is often observed is when a simple solenoid valve operates on the same power supply as the flow meter. When the solenoid turns off for 1 ms, it produces a jump of 100 volts. Part of this voltage jump is applied to the sensor, momentarily exceeding the maximum of 30 Vdc of the sensor, which leads to damage.
What can be done to prevent catastrophic failures in flow measurement systems?
Neil Hanai, a senior R&D engineer at Titan Enterprises, said: “Most of the damage is usually caused during the installation of the flowmeter. Minor errors can lead to a malfunctioning meter even before the customer has started, leading to costly repairs or replacements, as well as process downtime that can be avoided.
Titan Enterprises produces more than 70,000 flowmeters each year, which are used in a wide variety of industries, processes and applications, so troubleshooting is not uncommon for customers, especially those unfamiliar with Titan’s flow measurement products. .
Neil says: “Titan provides written data and instruction sheets with all our flowmeters, and we have also published some video with installation instructions to help our customers and prevent any improper wiring that could damage the devices. ”
The following installation checklist will go a long way in preventing common causes of damage to the pulse flow sensor:
For more information on the flow meter and the range of Titan tools or to discuss any processes and technical issues, please contact Titan Enterprises at +44 (0) 1935 812790 or firstname.lastname@example.org. Visit our website at www.flowmeters.co.uk/
Based on over 40 years of flowmeter innovation, Titan Enterprises Ltd is a leading manufacturer of high-performance flow measurement solutions, including the Atrato Ultrasonic Flowmeter, Oval Flowmeters, Low Flow Turbine Flowmeters and a range of flow tools. Titan’s company philosophy of “overcoming the range, trying to make things a little different and better” has led to sales of over 2 million flowmeters and components in 50 countries around the world and a repurchase rate of 95%. All flowmeters manufactured by Titan Enterprises are designed and manufactured to ISO9001 and calibrated to an uncertainty of ± 0.25%.