The system is based on the principle that the water consumptions are calculated, and consumers are charged accordingly in advance. Consumers spend the amount of water loaded from credit sales offices. The whole system includes the prepaid water meter, the card reader, the system software and IC/RF cards. By loading the credit to water meters via smart cards, the water meter cuts off the water by closing its valve when the credit ends, but when the consumer re-loads the spare credit in smart card to the water meter, the valve will re-open. It has the advantages of easy installation and easy to use, suitable for water measurement and charges of urban residents.
Product Dimensions
Working condition:
a) Water temperature: 0.1℃～40℃(cold water) 1℃～90℃(hot water)
b) Water pressure: ≤1.0MPa
Maximum permissible error:
a) In the lower zone from qmin inclusive up to but excluding qt is ±5%
b) In the upper zone from qt inclusive up to and including qs is ±2%(cold water) , ±3%(hot water)
Standard: ISO4064 Class B
Material: Brass, stainless steel
Accessory: a set of nipples, nuts, gaskets.
Main Technical Specifications:
| Type | Size | Class | Q4 Overload | Q3 Permanent | Q2 Transitional | Q1 Minimum | Minimum Reading | Maximum Reading |
| m³/h | m³/h | m³ | ||||||
| LXSK-15 | 15 | B | 3.125 | 2.5 | 0.05 | 0.03125 | 0.0001 | 9,999 |
| LXSK-20 | 20 | B | 5 | 4.0 | 0.08 | 0.05 | 0.0001 | 9,999 |
| LXSK-25 | 25 | B | 7.875 | 6.3 | 0.126 | 0.07875 | 0.0001 | 9,999 |
Dimensions:
| Type | Size | Length | Width | Height | d Connecting Thread |
| mm | |||||
| LXSK-15 | 15 | 165 | 105 | 115 | G3/4B |
| LXSK-20 | 20 | 195 | 105 | 115 | G1B |
| LXSK-25 | 25 | 225 | 119 | 115 | G1/4B |
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