Categories
Information on the accreditation categories: mass, length, volume, weighing instruments and measuring instruments.
Mass
| Type | Category | Sub-category |
|---|---|---|
| Mass | Traders weights M1 M2 M3 |
Length
| Type | Category | Sub-category |
|---|---|---|
| Length | Material measures of length |
Volume
| Type | Category | Sub-category |
|---|---|---|
| Volume | Measures of volume | Milk and cream bottles |
| Oil bottles | ||
| Milk delivery measures | ||
| Milk delivery measures (level test and/or volume test) |
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| Beer delivery measures | ||
| Spirit dispensers | ||
| Cubic measures | ||
| Volume measuring instruments (e.g. tallyclark, loadscan etc.) |
Weighing instruments
| Type | Category | Sub-category | |||
|---|---|---|---|---|---|
| Weighing Instruments (Includes both electronic and mechanical instruments)** |
Miscellaneous weighing instruments | ||||
| Class I | Precision balances | ||||
| Class II | Precision balances, beam scales, counter scales*** | ||||
| Class III and IIII | Maximum capacity ≤ 300 kg | ||||
| No maximum capacity | Platform scales | ||||
| Weighbridges* | |||||
| Hoppers and bins | |||||
| On-board weighing instruments* | |||||
| Container weighing instruments* | |||||
| Semi automatic weighers | |||||
| In-motion weighing | Static mode | ||||
| Dynamic mode | |||||
| Belt weighers – Class 0.5, 1, 2 | |||||
| Automatic catch weighing instruments class Y(a) & class Y(b) | Package weighers | ||||
| Vehicle mounted instrument (e.g. front-end loaders, loadrite etc.) | |||||
| Container weighing instruments* | |||||
| Automatic weighing instruments class X | |||||
Measuring instruments
| Type | Category | Sub-category | |||
|---|---|---|---|---|---|
| Measuring Instruments | Class 0.3 | Liquid measuring systems on pipelines | |||
| Class 0.5 | Liquid measuring systems for refuelling aircraft or loading ships | ||||
| Measuring systems for milk | |||||
| Measuring systems for unloading ships tanks, rail tankers, or road tankers | |||||
| Measuring systems for liquids of low viscosity on road tankers (also known as liquid fuel measuring instruments fitted on delivery vehicles) | |||||
| Measuring systems in fuel dispensers (other than LPG dispensers) for motor vehicles (also known as fixed liquid fuel measuring instruments) | |||||
| Other liquid measuring systems | |||||
| Class 1.0 | Measuring instruments dispensing liquefied gases under pressure measured at a temperature equal to or above -10°C that are: - LPG dispensers for motor vehicles; or - Measuring systems fitted on delivery vehicles; or - Measuring systems on gantry load out meters. |
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| Measuring systems that are Class 0.3 or Class 0.5, but used for liquids that are of a: - Temperature less than −10°C or greater than 50°C; or - Dynamic viscosity higher than 1 000 millipascal second; or - Maximum volumetric flow rate of 20 L per hour or less. |
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| Class 1.5 | Measuring systems for liquefied carbon dioxide, or liquefied gases under pressure (other than LPG) measured at a temperature below -10°C (other than cryogenic liquids) | ||||
| Class 2.5 | Measuring systems for liquids at a temperature below -153°C | ||||
| Area measuring instruments | |||||
| Length measuring instruments | |||||
| Leather measuring instruments | |||||
| Multidimensional measuring instruments | |||||
| Direct mass flow measuring instruments | |||||
| Miscellaneous measuring instruments | |||||
* See definition in glossary of terms.
** All test procedures must be documented and approved by Trading Standards.
*** Where a mechanical instrument incorporates traders weights, that is ‘weights that are part of the weighing instrument and are used to indicate a whole or partial weighing range’ the verifying Accredited Person must also hold accreditation for the category ‘Traders weights'.