Explanation of classification string
1. Used by people who know how to utilise the key and with little probability of misuse.
a. just one class characterized by n° 1
2. Maximum resistance obtainable in long-term test (100,000 cycles).
a. The reference standard envisages 3 degrees:
I. Degree 4 25000 cycles
II. Degree 5 50000 cycles
III. Degree 6 100000 cycles
3. No requisite
4. Suitable for use on smoke/fire doors.
a. The reference standard envisages 2 degrees:
I. Degree 0 not apt to be used on smoke/fire doors
II. Degree 1 apt to be used on smoke/fire doors
5. No requisite
6. Maximum classification in terms of high resistance to corrosion (96h) and temperature
a. The reference standard envisages 4 degrees:
I. Degree 0 no requisite for resistance to corrosion and temperature
II. Degree A high resistance to corrosion and no requisite for resistance to temperature
III. Degree B no requisite for resistance to corrosion and resistance to temperature –20°C÷+80°C
IV. Degree C high resistance to corrosion and temperature –20°C÷+80°C
7. Maximum classification in terms of key identification requisites.
a. The reference standard envisages 6 degrees:
I. One characteristics is the number of different possible combinations from a minimum of 100 combinations (degree 1) to a maximum of at
least 100000 (degree 6)
8. Maximum classification in terms of resistance to drilling and mechanical forcing.
a. The reference standard envisages 3 degrees:
I. Degree 0 no requisite for resistance to drilling/mechanical forcing
II. Degree 1 3/5 minutes resistance
III. Degree 2 5/10 minutes resistance
The cylinders certified as BUMP-RESISTANT are marked “BKC” on the label
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