Singapore legislation
Schedule 2
Schedule 2
Maximum permissible error upon testing of weighing or measuring instruments
SECOND SCHEDULERegulations 5, 11(1) and 12(1)(a)Maximum permissible error upon testing of weighing or measuring instrumentsMeasurement of LengthLength Measures Testing and passing as fit for use for trade Testing and passing as fit for use for trade End measure Line measurePurported value Maximum permissible error in excess or deficiency Maximum permissible error in excess or deficiency millimeters millimeters1 centimetre — 11 decimetre — 11 metre 1 12 and 3 metres 2 2Notes:1. An end measure is a length measure which has the principal scale marks formed by 2 end surfaces or edges of the measure.
2. A line measure is a length measure which has the principal scale marks formed by 2 lines, holes or marks.Measurement of VolumeCapacity measures Testing and passing as fit for use for tradePurported valueMaximum permissible error in excess or deficiency millilitres1 millilitre..................0.032 millilitres..................0.065 millilitres..................0.1510 millilitres..................0.320 millilitres..................0.625 millilitres..................0.7530 millilitres..................0.950 millilitres..................1.5100 millilitres..................3200 millilitres..................6250 millilitres..................7.5500 millilitres..................151 litre..................302 litres..................602.5 litres..................755 litres..................15010 litres..................30015 litres ..................45020 litres..................60025 litres ..................75030 to 300 litres..................At the rate of 3% per litreOil dispensing pumps Testing and passing as fit for use for tradeIn-service inspectionQuantity DeliveredMaximum permissible error in excess or deficiencyMaximum permissible error in excess or deficiency millilitresmillilitres250 millilitres0.751.25500 millilitres1.52.51 litre and aboveAt the rate of 0.3% per litre At the rate of 0.5% per litre Flowmeters Testing and passing as fit for use for tradeIn-service inspectionRepeatabilityAccuracy ClassMaximum permissible error in excess or deficiencyMaximum permissible error in excess or deficiency 0.30.2%0.3%0.12% 0.50.5%0.5%0.2% Notes:1. The Accuracy Classes for flowmeters are as follows:
Class 0.3 refers to flowmeters used in pipework and includes truck loading and terminal meters; and
Class 0.5 refers to flowmeters for general use for trade.
2. The percentages specified refer to the actual volume measured against the standard.Weighing InstrumentsNon-automatic weighing instruments Testing and passing as fit for use for trade In-service inspectionAccuracy ClassLoad (expressed in verification scale intervals, e) Maximum permissible error in excess or deficiency (expressed in units of grams or kilograms depending on e)Class I0 to 50,000 0.5(e) 1(e) over 50,000 to 200,000 1(e) 2(e) over 200,000 1.5(e) 3(e)Class II0 to 5,000 0.5(e) 1(e) over 5,000 to 20,000 1(e) 2(e) over 20,000 1.5(e) 3(e)Class III0 to 500 0.5(e) 1(e) over 500 to 2,000 1(e) 2(e) over 2,000 1.5(e) 3(e)Class IV0 to 50 0.5(e) 1(e) over 50 to 200 1(e) 2(e) over 200 1.5(e) 3(e)[S 897/2022 wef 21/11/2022]Notes:1. Load refers to a mass of known quantity applied to the load receptor for the purposes of testing or inspection.2. e is the value, expressed in units of mass, of the scale interval used on the instrument.
3. The Accuracy Classes of non-automatic weighing machine are as follows:
Class I refers to non-automatic weighing machines of special accuracy;
Class II refers to non-automatic weighing machines of high accuracy;
Class III refers to non-automatic weighing machines of medium accuracy; and
Class IV refers to non-automatic weighing machines of ordinary accuracy.