Capitalize the first section presents Chinese pinyin letters, of which the first is the product belong to categories, namely the water meter of flow instrument category, expressed with "L", the second is the product's small class, namely water meter, with an "X", said the third, four said the product's working principle, structure, function, characteristics, etc.
The second section presents the Arabic Numbers and letters, reflecting the water meter of nominal diameter, indicating device type and the design of the product serial number (rotor meter), etc. The design of serial number:
On behalf of A base type, seven pointer, combined impeller, 1 l scale;
B represents the combination impeller, 8 Pointers, minimum 1 l check index;
C on behalf of the integral impeller, 8 Pointers, minimum verification index 0.1 L;
E for integral impeller, four pointer four word wheel combined counters, minimum verification index 0.1 L. Type A list of them are original unified design type water meter design improvements for the first time, has been listed in the eliminated products, no longer production.
