Test Weights

Test Weights Shape Customization

Test weights are available in many shapes. These shapes can be customized depending on their intended application. Customers can customize their test weights to be made in various shapes. The common shapes being used are cylindrical, slotted, leaf, and grip handle. Each of these shapes has their own weight and scales classes which they are best suited for.

Each weighing scale or equipment is grouped in their own classifications based on their weight class. Weighing scales can be classified as either Class l to lllL. Class l weighing scales are those which are used in the laboratories. This type of weighing scale or equipment measures weights in the milligrams unit or lower. As the Class goes further up so does the weight capacity of the weighing scales classified under them. Class lll weighing scales are those which have weighing capacity less than or equal to 30,000 lbs. These include vehicle weighing equipment like axle-load scales, crane scale, or weighbridges.

Test weights too have their own set of classifications. Test weights are classified depending on their tolerances. There are also three types of classification used; OIML, ASTM, and NIST. Each of these classifications has their specific weighing applications.

For example, NIST Class F test weights are used to calibrate trade scales. The classification of OIML test weights are E1, E2, F1, F2, M1, M2, and M3. OIML Class E1 test weights are considered the most accurate, while OIML Class M3 is the least. Camaweigh gives its customers to customize the test weights according to their needs and specifications.

Weight Class Customization

Customers can customize their test weight packages depending on the classification of the weights. High precision weights are test weights which are classified in OIML Classes F1 and F2. High precision weights under the OIML Class F1 are used for testing, adjustment, and the calibration of weighing scales under OIML Class l. High precision weights under this class are also used in the calibration of weights under the lower classes M3-F2. This class of high precision weights has a maximum allowable error of ±5 mg from the nominal value at 1 kg. This Class of high precision weights can also be used for calibrating weighing scales under the Class ll classification.

High precision weights under the OIML Class F2 are also used for testing, adjustment, and the calibration of weighing scales under Class ll or laboratory scales. They are also suitable for traceability of test weights under OIML Class M1 and lower. This type of high precision weights are used in the calibrating of weighing scales used in high value commercial transactions like gold, silver, and other precious metals. The maximum allowable error of these test weights is ± 16 mg from their nominal value. OIML Class F2 high precision weights are used as the working standards for external weights and built-in weights when calibrating high precision balances.

Precision weights are test weights which are classified in the OIML Class M1, M2, and M3. Each of these classes is used to calibrate their designated weighing scales.

OIML Class M1 precision weights are used for calibration, testing, and adjusting of Class lll weighing scales which are commonly used for commercial uses. Class lll weighing scales are those which have a load capacity equal to 30,000 lbs. or less.

OIML Class M2 precision weights are ones which are used in the calibration, testing, and adjusting of weighing scales under the Class ll classification. Class ll classified weighing scales are used to commercial uses. OIML Class M2 precision weights are used in general business together with Class lll commercial scales. OILM Class M3 precision weights are one which is used in the calibration, testing, and adjusting of weighing scales under the Class lll classification. This type of weighing scales is used for industrial purposes. Class lll weighing scales are ones which have a load of 30, 000 lbs. or less. OIML Class M3 precision weights are also used with industrial scales of Class lllL and commercial scales of Class lll. These precision weights can be used in load testing of crane and elevators Heavy duty cast iron weights are test weights which are classified in the OIML Class M1, M2, and M3. Each of these classes is used to calibrate their designated weighing scales.