1、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.

2、Working condition:
a) Water temperature: 0.1℃～40℃(cold water) 1℃～90℃(hot water)
b) Water pressure: ≤1.0MPa
3、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)
4、Standard： ISO4064 Class B
5、Material： Brass, stainless steel
6、Accessory：a set of nipples, nuts, gaskets.

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

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