Categories of measuring instruments

load cell

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
Taximeters	R 21	X
Material measures of length	R 35	X
Active electrical energy meters	R 46	X
Water meters	R 49	X
Continuous totalizers	R 50	X
Automatic catchweighers	R 51	X
Sound level meters	R 58	X
Moisture meters for cereal grains and oilseeds	R 59	X
Load cells	R 60	X
Automatic gravimetric filling instruments	R 61	X
Heat meters	R 75	X
Non-automatic weighing instruments	R 76	X
Cryogenic liquids	R 81	X
Level gauges for stationary storage tanks	R 85	X
Integrating-averaging sound level meters	R 88	X
Focimeters	R 93	X
Vehicle exhaust emissions	R 99	X
Sound calibrators	R 102	X
Pure-tone audiometers	R 104	X
Automatic rail-weighbridges	R 106	X
Discontinuous totalizers	R 107	X
Pressure balances	R 110	X
Liquids other than water	R 117	X
Speech audiometry	R 122	X
Evidential breath analyzers	R 126	X
Ergometers for foot crank work	R 128
Multi-dimensional measuring instruments	R 129	X
Liquid-in-glass thermometers	R 133	X
Weighing road vehicles in motion	R 134	X
Areas of leather	R 136	X
Gas meters	R 137	X
Compressed gaseous fuel systems for vehicles	R 139	X
Continuous measurement of SO2 in stationary source emissions	R 143	X
Continuous measurement of CO, NOx in stationary source emissions	R 144	X
Ophthalmic instruments - Impression and applanation tonometers	R 145	X
Protein measuring instruments for cereal grains and oilseeds	R 146	X
Non-invasive non-automated sphygmomanometers	R 148	X
Non-invasive automated sphygmomanometers	R 149	X
Continuous totalizing automatic weighing instruments of the arched chute type	R 150		X	1 January 2023