LIMIT | Everything can be measured 1
IMPORTANT INFORMATION ON WEIGHING There may be a
difference between display resolution and accuracy The display resolution is the smallest unit shown in the display for the scales. Accuracy is usually expressed in +/- scale divisions, to be compared with the total number of scale divisions for the scales. It must not be assumed that the display resolution is equivalent to the accuracy, particularly if there is a high display resolution in a low-price device. Example 1: Industrial scales from Limit with a capacity of 30 kg x 10 grams always has a maximum inaccuracy of +/- 10 grams. The display resolution is equivalent to the accuracy for all our industrial scales. Example 2: Cheap scales with a high display resolution are claimed to have a capacity of 30 kg x 1 gram (1 gram is the display resolution). The inaccuracy is claimed to be +/- 1%, which seems fine initially. Inaccuracy +/-1% on 30 kg = +/- 300 grams. This means that the display may be showing 15.237 kg, for example, while the actual weight may be anything from 14.937 kg to 15.537 kg. Type approval Type approval means that the model of scales in question has undergone thorough testing and received approval by an EU- accredited institute/company, which permits initial verification. Scales that are to be used in legal trade and for diagnosis/treatment must be typeapproved and verified. (OIML stands for International Organization of Legal Metrology. The OIML produces international standards and models to ensure correct legal measurement.) Verification Verification is an inspection carried out to ensure that individual scales meet the requirements defined in the type approval. These are required where the weight provides a basis for charging or is used for diagnosis/ treatment. The verification is time-limited, and only accredited companies/bodies are allowed to perform verification. A verification certificate is printed when verification is complete and the scales are sealed. 158 | Re-verification Scales that have been verified and are used are inspected by means of re-verification (periodic inspection). Shop scales, for example, are required by law to be re-verified every two years. Only accredited companies/bodies are allowed to perform re-verification. Calibration and adjustment Any inaccuracy in the values displayed by the scales are checked and documented during calibration. The measuring instrument is compared with a correct measure, i.e. a trackable and certified weight. Any deviations can usually be corrected by means of adjustment. Most companies working in the weighing scales industry perform calibration and adjustment. Quality scales for most purposes Our range of quality scales include everything from mechanical table scales and spring scales to electronic letter scales, parcel scales, floor scales and counting scales. All our scales focus on providing maximum quality and measurement accuracy. Things to consider when choosing scales Environment: A dry or wet environment will determine which type of enclosure or material is required for your scales. Scales are available in versions for everything from dry, normal industrial environments to scales with high enclosure ratings (IP ratings), made entirely of stainless, acidproof steel for the fish and meat industry, for example. What you will be weighing: The size of the objects being weighed may be crucial when selecting scales. For best results, the objects being weighed should fit onto the weighing surface of the scales. Uneven weight distribution of more than one-third of the maximum capacity of the scales must not be applied to a weighing surface. Accuracy: The accuracy required from the results generally has a direct impact on the cost. You should also have one decimal place more