(1)OIML R76中提出仅仅提出control marks的概念
4.1.2.4 Securing of components and pre-set controls
Means shall be provided for securing components and pre-set controls to which access or adjustment is prohibited. National legislation may specify the securing that is required.
On a class I instrument, devices to adjust sensitivity (or span) may remain unsecured.
Acceptable solution:
For application of the control marks, the securing area should have a diameter of at least 5 mm.
Components and pre-set controls may be secured by software means provided that any access to the secured controls or functions becomes automatically evident. In addition the following requirements apply to software securing means.
(2)GB/T7722-2005《电子台案秤》中
6.1.6禁止接触或禁止调整的那些器件、预设装置、重力补偿装置或量程调整装置,应加印封或铅封。印封或铅封后,外部不会对其影响或触动。印封或铅封的直径至少为5 mm,印封或铅封不破坏不能拆下。印封或铅封破坏后,检定结果失效。
给出control marks明确解释:印封或铅封。
(3)问题:在个别省市的行政要求中,明确电子计价秤必须采用铅封标识,否则便不符合本地区要求
讨论一下是否合理,是地方法规与国家标准冲突,还是地方法规可以突破国家标准的规定要求。
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