The Non-automatic Weighing Instruments (EEC Requirements) Regulations 1993

Units of mass

2.  Accuracy classes

2.1. The following accuracy class have been defined:

I	special
II	high
III	medium
IIII	ordinary

The Specifications of these classes are given in Table 1.

Table 1

Accuracy classes

		Minimum capacity (Min)	Number of Verification scale intervals
Class	Verification scale interval (e)	minimum value	minimum value	maximum value
I	0,001 g ≤e	100 e	50 000	—
II	0,001 g ≤e ≤0,05 g	20 e	100	100 000
	0,1 g ≤e	50 e	5 000	100 000
III	0,1 g ≤e ≤2 g	20 e	100	10 000
	5 g ≤e	20 e	500	10 000
IIII	5 g ≤e	10 e	100	1 000

The minimum capacity is reduced to 5e for instruments in classes II and III for determining a conveying tariff.

2.2. Scale intervals

2.2.1. The actual scale interval (d) and the verification scale interval (e) shall be in the form:1 × 10^k, 2 × 10^k, or 5 × 10^k mass units,

k being any integer or zero.

2.2.2. For all instruments other than those with auxiliary indicating devices: d = e

2.2.3. For instruments with auxiliary indicating devices the following conditions apply:

• e = 1 × 10^kg

• d < e ≤ 10d

• except for instruments of class I with d < 10⁻⁴g, for which e = 10⁻³g.