Schedule 5 (Prescribed limits of error)I1
England, Wales and Scotland
The instrument shall have a specified accuracy class X(x) for which the maximum permissible deviation of each fill from the average shall be equal to the limits specified in Table 1, multiplied by the class designation factor (x).
(x) shall be 1 x 10k, 2 x 10k, 5 x 10k, k being a positive or negative whole number or zero.
Table 1
| Value of the mass of the fills M(g) | Maximum permissible deviation of each fill from the average for class X(1) | |||||
|---|---|---|---|---|---|---|
| Initial verification | In-service | |||||
| For in-service testing, when the reference particle mass exceeds 0.1 of the maximum permissible in-service deviation, the values derived from Table 1 shall be increased by 1.5 times the value of the reference particle mass. However, the maximum value of the maximum permissible deviation shall not exceed (x) x 9%.
| ||||||
| M ≤ 50 | 6.3% | 9% | ||||
| 50 < M ≤ 100 | 3.15g | 4.5g | ||||
| 100 < M ≤ 200 | 3.15% | 4.5% | ||||
| 200 < M ≤ 300 | 6.3g | 9g | ||||
| 300 < M ≤ 500 | 2.1% | 3% | ||||
| 500 < M ≤ 1000 | 10.5g | 15g | ||||
| 1000 < M ≤ 10000 | 1.05% | 1.5% | ||||
| 10000 < M ≤ 15000 | 105g | 150g | ||||
| 15000 < M | 0.7% | 1% | ||||