In a world where being fit is considered as the norm, keeping a track on our weight becomes more important than ever. And, what can do that more efficiently than a bathroom scale? If you are on a mission to lose unwanted fat, a bathroom scale is a must have in your arm range.
However, digital scales are known as fickle devices and sometimes can deceive you. How do you know if it’s come up with faulty readings? Scales often come up with inaccurate measurements, thus it’s important to determine the accuracy. Here comes the importance of calibration. Not only bathroom scales, but all the measuring devices require periodic calibration.
For the most part, household scales are easy to calibrate and can be done at home. Modern scales can self-calibrate themselves when they are shut off. But, still they are fewer in number. Therefore, it’s important to know how to calibrate digital bathroom scales.
What Is Calibration?
According to the International Bureau of Weights and Measures (BIPM) the calibration process is purely a comparison. Simply put, calibration is a comparison between a standard weight and the measurement using your instrument. Generally, the accuracy of the standard weight is assumed as ten times of the accuracy of the device that is being calibrated. Nevertheless, in most international standards an accuracy ratio of up to 3:1 is acceptable.
Moreover, almost all the countries have laboratories at national level these days to address the ever increasing need of calibration. In order to maintain primary standards of measurement many countries even set up a National Metrology Institute, which is accountable to provide traceability to customer’s instruments by calibration.
How to Calibrate Digital Bathroom Scales?
Instead of starting right away you better make some necessary preparation to calibrate your scale. It will safeguard you from unwanted interruption in between. Make the standard weight available, which you are going to use. Turn the device on and let it warm up for a while. Remember, in calibration there is scope for guess work, thus, only use an object that has a definite weight.
Having knowledge of “Cal,” “Function” or “Mode” buttons prior to operation will make things easy for you. Besides, the user manual is an important element during calibration. In case you mix-up any of the steps or the device starts acting strangely, it will shield you from further aberrations.
When all the preparatory measures are taken accordingly follow these general steps.
- Place the scale in a tough and even surface, which is not carpeted.
- Turn the scale on and let it be as it is for a while in order to warm it up.
- Restore the scale’s initial settings, which is termed as absolute zero reading. Look for assistance in the manual, if you aren’t aware of how to do so.
- Most of the scales come with a dedicated calibration button, which usually carries one of the following prints: “Cal,” “Function,” “Mode,” or “Cal/Mode. Locate and press that button. Hold until the scale displays “0”, “0.0”, “000”, or “Cal.” Your scale is ready to be calibrated, when one of those appears.
- Take standard weights that weigh between the weighing capacities of the scale. Put them in the center of the platform and ensure that they are stable.
- Wait until the scale takes the measurement. But, you don’t necessarily need to wait too long, since it takes only about five seconds.
- Press the calibration button once again to end the process and it will display “End,” “0,” or “Cal.” Up to date digital scales have the ability to self-reset when the calibration process is done. If this is not the case with yours, shut off the device for a few minutes and then turn it on again.
- If you want to counter check whether the calibration procedure worked properly, switch it off and restart after a while. Take another known weight and check. If it gives satisfying reading the calibration was correct. If not, repeat the calibration process again.
Why Do We Need to Calibrate Scales?
Measuring devices lose their accuracy over time and start to deviate from yielding precise results. It happens quite slowly and gradually, therefore, largely remain unnoticed until the device starts to act strangely. That’s why manufacturers always suggest periodical calibration. Calibration is even suggested prior to each measurement in situations when exact measurement is the utmost priority.
In addition, overlooking the procedure will turn your measurement to somewhat a guesswork. Day to day use causes some wear and tear. Besides, some external factors together with unfavorable circumstances lead the scale to a quick degradation. In addition to calibration, some routine testing greatly enhances the accuracy of a bathroom scale and ensures that it remains functional for a longer period of time.
Tips on Digital Bathroom Scale Calibration
Even though calibration is a simple and easy process, things might get complicated if you are totally unaware of the procedure. There are some high end multi-functional complex devices that require some added discretion during calibration. If yours demands that, try to do it with a professional.
Besides, manufacturers offer a warranty period with each device and calibrate scales free of cost during that time. Try to make the best use of that. Don’t do anything adventurous that can harm the scale. Despite the fact that it’s a bathroom scale, keep it away from water.