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Categories of Measuring Instruments

The table below shows the measuring instrument categories that are included in the OIML-CS, along with the corresponding OIML Recommendations. It also shows the Scheme (A or B) for each measuring instrument category and the transition date from Scheme B to Scheme A.


Measuring Instrument Category

Recommendation Number


Scheme

A             B

Transition from Scheme B to Scheme A

Sphygmomanometer

R 16X

1 January 2021

Taximeters

R 21

X

1 January 2021

Material Measures of Length

R 35X

1 January 2021

Active electrical energy meters

R 46X

Water meters

R 49X

Continuous totalizers

R 50

X

1 January 2021

Automatic catchweighers

R 51X

Sound Level Meters

R 58X

1 January 2021

Moisture meters for cereal grains and oilseeds

R 59X

1 January 2021

Load cells

R 60

X

Automatic gravimetric filling instruments

R 61

X

1 July 2020

Heat meters

R 75

X

1 January 2021

Non-automatic weighing instruments

R 76

X

Cryogenic Liquids

R 81X

1 January 2021

Level gauges for stationary storage tanks

R 85

X

1 July 2020

Integrating-averaging Sound Level Meters

R 88X

1 January 2021

Focimeters

R 93X

1 January 2021

Vehicle exhaust emissions

R 99

X

1 January 2021

Sound Calibrators

R 102X

1 January 2021

Pure-tone Audiometers

R 104X

1 January 2021

Automatic rail-weighbridges

R 106

X

1 January 2021

Discontinuous totalizers

R 107

X

1 January 2021

Pressure Balances

R 110X

1 January 2021

Liquids other than water

R 117X

Speech Audiometry

R 122X

1 January 2021

Evidential breath analyzers

R 126

X

1 January 2021

Ergometers for foot crank work

R 128X

1 January 2021

Multi-dimensional measuring instruments

R 129

X

1 July 2020

Liquid-in-glass thermometers

R 133X

1 January 2021

Weighing road vehicles in motion

R 134

X

1 January 2021

Areas of Leather

R 136X

1 January 2021

Gas meters

R 137X

Compressed gaseous fuel systems for vehicles

R 139

X

1 January 2021

Continuous measurement of SO2 in stationary source emissions

R 143X

1 January 2021

Continuous measurement of CO, NOx in stationary source emissions

R 144X

1 January 2021

Ophthalmic instruments – Impression and applanation tonometers

R 145X

1 January 2021

Protein measuring instruments for cereal grains and oilseeds

R 146X

1 January 2021

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