Accredited DAkkS calibrations
ESSMANN | Waagen & Automation arranges calibrations in cooperation with the DAkkS-accredited calibration laboratory of KERN & SOHN GmbH.
DAkkS calibration for scales is a procedure in which the measurement results of scales are documented and evaluated to ensure that they meet the increasing quality requirements of demanding quality management systems. The DAkkS calibration certificate is a Europe-wide recognized document that meets the highest auditor and customer requirements. It offers the possibility of optimally evaluating the measurement results by containing a formula for calculating the measurement uncertainty. In this way, the user knows exactly what deviations to expect at each point of the linearity curve of his balance. In addition, so-called minimum weights can be calculated to check whether any tolerance specifications are being adhered to.
DAkkS calibration is carried out by accredited laboratories on the basis of the recognized DIN EN ISO 17025 standard. In contrast to a factory calibration certificate (ISO calibration), it is more meaningful as it includes a measurement uncertainty calculation for the respective scale. In addition, a calculation of a so-called minimum initial weight and, if applicable, a statement of conformity can also be documented.
In summary, DAkkS calibration of scales is an important procedure for ensuring the quality and accuracy of measurement results. It is carried out by accredited laboratories and offers the user the opportunity to optimally evaluate the measurement results.
Calibrating the scales – how to do it right!
Precision is everything: How a scale works properly and why regular calibration is essential. Find out how the display is compared with the actual weight.
When should you calibrate a scale?
There are various reasons why you might want to calibrate a scale. It may be new and you want to make sure it is working correctly. Or you may have noticed that the scale has become inaccurate recently. In either case, it’s important to calibrate the scale so that you can continue to take accurate measurements. Fortunately, calibrating a scale is relatively easy and can usually be done in just a few minutes. In this article, you will learn everything you need to know about calibrating a scale. We’ll go step by step and explain exactly what you need to do. So, let’s get started!
Definition of calibration
Before we get into the actual calibration process, let’s briefly explain what calibration means. Calibrating a scale basically means readjusting or adjusting it. This is necessary to ensure that the scale can continue to make accurate measurements. Every scale has a certain tolerance, which means it is not always 100% accurate. If the weight you read on the scale differs slightly from the actual weight, this is normal. However, if the display deviates more and more from the actual weight or is constantly changing, the scales should be calibrated. This also applies if you buy a new scale or find that your existing scale is no longer as accurate as it used to be. Calibration ensures that the readings are still accurate.
How to calibrate your scales
First check whether your scales can be calibrated. Most industrial scales can be calibrated. You will find information on this in the operating instructions or on the underside of the scale. For calibration, you will need either reference weights or a special calibration device. Which method you can use depends on your scale. In most cases, reference weights, which you can find in our online store, are sufficient.
First check the zero setting of your scales. Make sure that the scale is actually set to zero. If not, adjust the setting accordingly.
Then place a weight on the scale and check the display. Repeat this step with different weights to ensure that your scale is working correctly.
If you do not have any reference weights available or your scale requires a special calibration device, you can contact us and commission us to calibrate it.
How often should a scale be calibrated?
The accuracy of a scale depends on its calibration. The interval for calibration depends on the intended use and location of the scale. For private use, it is usually sufficient to calibrate the scale once a year. However, if the scales are used more frequently or in commercial areas such as the food trade, where goods are juggled on a daily basis, calibration should be carried out more frequently. This is because the greater the deviation from the standard values, the less accurately the weight will be displayed. For professional users, a tolerance limit that is too large can quickly threaten their existence.
Why is calibration important?
Accurate and reliable measurement is crucial to the smooth running of any business. To ensure that you get consistent readings for internal checkweighing for years to come, or to use your scale for other purposes, it is essential to calibrate your scale regularly.
What to do in the event of calibration errors?
There are various reasons why a scale needs to be calibrated. On the one hand, the scales may no longer function correctly and display incorrect values. On the other hand, it may also be that the scale is inaccurate and does not display the weight precisely. In both cases, it is important to calibrate the scales. If the calibration is successful and the weight is displayed correctly, the scale is correctly calibrated. If not, the scale settings should be checked and adjusted if necessary. If the problem persists, it is advisable to contact a specialist company. Only they can determine whether the calibration has been carried out correctly or whether there are other errors.
