Pressure sensors are critical components of the automotive and marine industries. Small to large machines have quality fluid running through the system. Fluids can exert pressure and might cause disturbances in the systems.
Accurate pressure measurements ensure system stability and proper fluid management. Therefore, ensuring pressure sensor accuracy is a critical priority. Do you want to know more about the pressure sensor accuracy and how it helps experts gain knowledge?
Today, we will discuss various points related to pressure sensor accuracy.
Understanding Pressure Sensor Accuracy
Pressure Sensor accuracy refers to the exact measurements of the pressure under different conditions. Pressure sensors, like all measurement tools, are prone to systematic and human-induced errors.
But some tools guarantee accurate measurements in all conditions and offer no errors. Errors can cause poor control, safety risks, faulty readings, and degraded product quality.
Therefore, you should confirm the pressure sensor accuracy in different conditions.
Accuracy vs. Precision
Remember, the precision is different from the accuracy. In simple words, we have explained both terms as people think of them as the same.
Imagine accuracy as hitting the bullseye on a dartboard, while precision is clustering darts in one spot—accurate or not.
- Accuracy. It is the measurement of pressure value that is close to the actual value. In simple words, measured values equal actual values.
- Precision. It doesn’t talk about the accuracy but about the repetition or consistency of the values. The value can be accurate or not, but the results are consistent with the overall values.
A tool can be accurate or precise. Some tools are both precise and accurate.
Factors affecting the accuracy of a pressure sensor
There are many environmental factors and conditions that directly or indirectly affect the pressure sensors. For example, temperature changes the electrical and mechanical features and might affect the measured values.
Let’s discuss various factors.
Temperature
Temperature is the biggest contender in this game. It plays not only with the accuracy of a sensor but also changes the mechanical features of a device.
Temperature variations cause thermal expansion in sensor components, skewing readings. For instance, a 10°C rise might shift output by 0.5% in uncompensated sensors.
Internal metallic components of a sensor respond to the temperature fluctuations until they are resistant. So, you can treat the temperature as one of the significant factors.
Media compatibility
Incompatible components always hurt the devices from the inside. The same thing can happen here, too. Inaccurate and incompatible fluids can exert pressure and cause damage to the sensor diaphragm. When you measure the values, they appear different. So, the media compatibility is also crucial; otherwise, pressure sensor measurements can be inaccurate.
Mounting orientation
Mounting direction has a slight impact. It causes the gravitational impacts and pulls the trigger on the accurate values. However, such an impact is significant on tools with very low pressure sensing capabilities.
Electrical noise and EMI
Electrical and electromagnetic interference play a negative role in this game. They hinder the electrical current and cause issues during the measurements. The values can be inaccurate and problematic for the users.
Mechanical stress
Overtightened nuts and mechanical stress induced during the installations are also a prominent issue in the measurement. They can render inaccurate measurements.
How to Improve Pressure Sensor Accuracy
Pressure sensor accuracy is critical for all systems. Calibrate sensors every 6-12 months, adjusting for environmental wear and drift. However, you can ensure it with the following steps and tips.
Use temperature-resistant sensors.
Instead of using the temperature-sensitive parts, you should get those components that beat all the temperature-related changes. There is another option for you— temperature compensation.
Some manufacturers offer temperature compensation to ensure high accuracy. In that case, find words like Compensated Temperature Range” and “Temperature Error Band in the specifications to know if the tool is temperature compensated or not.
Calibrate regularly
If you haven’t checked your sensor for so long, it might start giving irregular and inaccurate readings. You had better go for the testing and calibration to avoid the problems. Check the quality measurements to make it better and more accurate periodically. Treat any abnormalities if they appear.
Choose the right sensor for the range.
Check the range of sensors. Far-end ranges can cause inaccurate values. Sensor range should center around your typical operating pressure.
Reduce external influences
Check your sensors and deploy the right fielders in this case. For example, don’t let the EMI cause inaccuracies. Go for the shields that prevent the electromagnetic influence. Use proper cables and grounding systems.
Why is sensor accuracy necessary in real-world applications?
If you are using the pressure sensors in various applications, accuracy can bring several benefits. All of them are:
Safety and Compliance
Sensor accuracy provides safety and prevents damage to the devices.
- Overpressure detection: Prevents equipment failure or explosions in boilers, pipelines, or tanks as you detect the pressure problems early.
- Medical safety. You can ensure proper dosage and respiratory support in devices like ventilators or infusion pumps.
- Regulatory compliance. Many industries must comply with standards, such as FDA, ISO, and ASME.
Process Control and Efficiency
Accuracy defines better control and higher efficiency. Here is more to check.
- Consistent product quality. In food processing or pharmaceuticals, the correct pressure ensures product integrity. So, pressure accuracy is necessary.
- Efficient automation. Accurate sensors offer timely actuation in valves, pistons, or robotic systems.
- Reduced waste. Accurate readings prevent material overuse, saving costs and reducing environmental impact.
Cost Savings and Maintenance
Maintenance can help treat all the abnormalities in the early phases and get on track. Here are ways to escape the matrix.
- Early fault detection. High-accuracy sensors detect minor anomalies in early phases. You can treat problems before they snowball.
- Extended equipment life. Accurate sensors come with better protection and reduced stress on components. Undetected pressure surges or drops can’t impact the tools anymore.
- Fewer recalibrations. Reliable accuracy minimizes the frequency of manual adjustments or sensor replacements.
Conclusion
Pressure Sensor accuracy is a critical aspect. A slight change in pressure can trigger a new discussion and might cause the failure of the whole system. Therefore, confirm the accuracy of your pressure sensors and understand how accurate their pressure measurements are.
Do you want to purchase highly accurate pressure sensors? For reliable performance, choose sensors from manufacturers offering detailed specifications and support. Sendo Sensors has one of the qualitative pressure sensors that measure the pressure in different applications. Check out the quality sensors right away!