Legal Metrology Act, 2014 (Act No. 9 of 2014)RegulationsLegal Metrology Regulations, 2017Part XI : Measuring instruments and containers used for prescribed purposes112. Lubricating oil dispensers |
| (1) | Except as otherwise provided in this regulation, the system must conform to provisions of regulation 108(1), (2), (3), (4) and (5), where applicable. |
| (2) |
| (a) | The meter in a dispenser must be operated under pressure from a pump. |
| (b) | Where the pump of a dispenser is driven by a compressed air motor, the air gland on the motor and the oil gland on the pump must be separated by a space open to the atmosphere, or an air escape vent must be provided between the glands. |
| (c) | Where it is impracticable to provide a dispenser with an air or vapour eliminating device referred to in regulation 108(2)(b), it must be provided with a float-operated valve at the upstream end of the intake pipe, to stop the supply of oil to the dispenser before the oil in the supply tank reaches a level which will permit air to enter the system. |
| (d) | The valve referred to in paragraph (c) may be provided with a small vent or other suitable device, opening below the surface of the oil at its lowest level, to release the vacuum in the suction pipe when the supply of oil is exhausted. |
| (e) | The delivery outlet nozzle of a dispenser must be of a "nondrip" type and must incorporate a spring-loaded check and non-return valve to ensure that the delivery spout, nozzle and any delivery hose remain filled. |
| (f) | Any clock-type indicator on the meter of a dispenser must be so constructed that the index pointers can be reset to zero in the decreasing direction only. |
| (g) | All pointers of a clock-type indicator on a meter of a dispenser must be reset in one operation and there must be a stop to prevent resetting below zero. |
| (3) |
| (a) | The value of the smallest graduation on the meter of a dispenser must be not more than 0,01 L. |
| (b) | The distance between the graduation lines on any clock-type indicator on the meter of a dispenser must be not less than 2 mm when measured from centre to centre at the base line. |
| (4) |
| (a) | Any delivery hose or hose connecting the pump and meter of a dispenser must be non-expansible. |
| (b) | Where any hose of a dispenser is retractable on a reel, the length of the hose, measured from the reel to the tip of the delivery outlet nozzle, must be not more than 7 m. |
| (c) | Where any hose of a dispenser is not retractable, the length of the hose, measured from the meter in the case of a rigidly mounted meter, or from the end of the rigid piping in the case of a meter situated at the delivery end of the hose, must be not more than 4 m. |
| (d) | The length of any hose connecting the end of a rigid delivery pipe and a hose reel of a dispenser must be not more than 0,6 m. |
| (e) | The pump of a dispenser must be appropriate for the viscosity of the product being measured and must be such that the rate of flow of the product through the meter is within the limits for proper measurement |
| (5) |
| (a) | The meter of a dispenser must be so installed that the indicator is visible to the operator and to a purchaser. |
| (b) | Any cover over the meter of a dispenser or any aperture or recess in which the meter is mounted must be of such size and must be so constructed and fitted as to allow ready access to the meter and particularly to the verification mark and protective marks thereon. |
| (c) | If more than one meter of a dispenser is fed by the same pumping unit the accuracy of any of these dispensers must be within the prescribed error allowance when all are operated simultaneously. |
| (d) | The maker's model designation must be clearly and indelibly marked on the pumping unit of a dispenser. |
| (6) |
| (a) | The meter of a dispenser must be tested for accuracy and constancy— |
| (i) | at the maximum rate of flow of which the dispenser is capable; and |
| (ii) | at one quarter of such maximum rate of flow. |
| (b) | At least one delivery of a quantity of not less than 5 L must be tested during each test and the market surveillance inspector or verification officer may, in addition, test any number of deliveries of such other quantities as he considers necessary. |
| (c) | To test the efficacy of the float-operated valve referred to in subregulation (2)(c), oil must be pumped through the meter at the maximum rate of flow obtainable and delivered into a certified measure from a supply which is insufficient to fill the measure, and when the meter stops indicating, the supply must be replenished and delivery continued until the measure is filled to the same level as was obtained during the test specified in paragraph (a)(i) and the volume then indicated by the meter must not differ from the volume in the measure by more than 10 mL. |
| (d) | In order to simulate the condition required for the test specified in paragraph (c) the suction pipe may be removed from the normal supply and placed in a supply which just covers the float-operated valve and be returned to the normal supply when the meter stops indicating, the pump being stopped while the transfer takes place. |
| (7) | Permissible error allowed on the meter of a dispenser, in excess only, in accordance with Table 23: |
1 |
2 |
TABLE 23 |
|
Quantity delivered |
Error allowed in excess only |
up to 500 mL |
5 mL |
over 500 mL and up to 2 L |
1% |
over 2 L and up to 4 L |
20 mL |
over 4 L |
0,5% |