Industrial Scales Explained: Features, Accuracy and their Role in modern Operations

This is the highest weight a scale can measure accurately. Exceeding this capacity may result in damage or inaccurate readings. An industrial scale with a maximum weighing capacity of 500 kg is ideal for medium-sized industrial products, while models with a multi-ton capacity are used in heavy industry.

Resolution describes the fineness of the measuring steps in which the scale records and displays weight differences. The resolution indicates how precisely a scale is able to detect weight fluctuations. The value ‘d’ shows the smallest weight unit that the scale can resolve.

For a scale with d = 0.1 g, the weight is displayed in increments of 0.1 g (e.g. 100.0 g, 100.1 g, 100.2 g).

Practical tip: A resolution of 0.1 g is suitable for precise measurements in pharmaceuticals, while 1 kg can be sufficient for pallets in logistics.

Resolution refers to the technical ability of the scale to measure and display these differences. Readability refers to the smallest difference you can see on the scale’s display.

The ability of a scale to produce accurate measurements throughout its full range. A perfectly linear scale would have the same accuracy at any weight.

Linearity is particularly important if you frequently measure different weight ranges, especially in laboratory environments where precision is critical. Good linearity ensures consistent results across the entire weighing range, whether you’re measuring minute quantities of chemicals or larger sample masses, providing the accuracy and reliability required for sensitive experiments and analyses.

Linearity refers to the accuracy of a scale across its entire weighing range, from the lowest to the highest capacity. It ensures that no matter the size of the object being weighed—whether it’s small or large—the scale provides a correct measurement. If a scale has good linearity, it means that it can accurately measure any weight within its range without significant deviations from the true value, ensuring consistent accuracy across different weight loads.

Reproducibility refers to the consistency of the scale when weighing the same object multiple times under the same conditions. A scale with high reproducibility will give you the same result each time you measure the same object, ensuring that no random variations or external factors (like environmental conditions) affect the result.

Eccentricity indicates the accuracy of a scale when the load is placed in different positions on the weighing platform. Ideally, the readings should remain consistent regardless of where the object is placed.

Calibration is primarily done to ensure the linearity and accuracy of the scale. During calibration, the scale is adjusted so that it provides accurate readings across its entire weighing range, correcting any deviations from the true value. Calibration helps to ensure that the scale measures correctly, regardless of the weight being measured (small or large loads), which directly relates to linearity.

While calibration does help with ensuring accurate measurements, it is not specifically aimed at improving reproducibility (which deals with consistency in repeated measurements) or eccentricity (which concerns accuracy when the load is placed at different points on the weighing platform). However, a well-calibrated scale can indirectly improve both by maintaining overall measurement accuracy. The value ‘c’ on an industrial scale stands for the calibration value. It indicates the smallest weight difference that is still considered reliable on a calibrated scale. With a scale with c = 1 g, weight differences of less than 1 g are not considered significant in custody transfer. The calibration value is particularly important for commercial scales that are used in business transactions. This ensures that the scale meets legal requirements.

Our industrial scales provide versatile weighing units including grams (g) for small measurements, kilograms (kg) for larger mass, pounds (lb) commonly used in the U.S. for weight, and ounces (oz) for lighter items, ensuring precise measurement in various applications.

In digital scales, this refers to the speed of data transmission between the scale and connected devices, such as computers or printers, often measured in bits per second (bps). 

The maximum error, also known as the measurement tolerance, indicates the largest possible deviation from the actual weight that can occur in a measurement. It is an important indicator of the reliability of a scale.

On a scale with a maximum error of ±0.1%, a 100kg object could be displayed as 99.9kg to 100.1kg. The maximum error is often given as a percentage of the measured weight or as an absolute value. It is particularly important in applications where precise measurements are required, such as in pharmaceuticals or food production. When selecting a scale, you should ensure that the maximum error meets the requirements of your specific application. It is important to note that in practice the actual error is often less than the stated maximum error. Regular calibrations and proper maintenance can help minimize the error and maintain the accuracy of your scale over time.

Dual-range scales offer two different measuring ranges with different resolutions. They combine high precision for smaller weights with a large weighing range.

A dual range scale could measure from 0 to 30 kg with a resolution of 10 g and from 30 to 60 kg with a resolution of 20 g. This flexibility makes dual-range scales particularly useful in applications where both small and large weights must be accurately measured, such as in food production. An example for a Dual-range Scale if our Gram Lite ZFOC.

If the scale is used internally, it may not require the stringent standards needed for trade. For trade purposes, scales must meet legal requirements for accuracy, be certified, and undergo verification. Verification ensures that the scale complies with the metrological standards set by regulatory authorities and is legally approved for commercial transactions, ensuring fair trade.

Scales used in trade must be periodically re-verified to maintain compliance with these standards. Everything you need to know about scales: Verification and regulations