Residential Smart Water Meter
Multijet Wet Type Plug-in Card Type
LXSK-E4 is a normal size of plug-in card intelligent water meter with remote valve control function in sizes from 15mm to 40mm. It measures the volume of cold water or drinking water passing through the pipelines.
Features
* One meter, one card.
* Multi jet dry or wet type water meter with valve control.
* Ball valve adopted, motor-driven.
* Prepayment Function: user pay first. No payment, no water.
* Synchronization Display Function: LCD display and mechanical display at the same time.
* Alarm function: The valve will close automatically and LCD display alarm information when the balance is less than the set certain volume.
* Battery Shortage:When the battery is not sufficient, the valve shall close automatically
* Anti-magnetic Attack Function: Water meter has automatic protection function. It will shut off the valve when magnetic field approaches.
* Meter body can be brass and plastic.
* Pulse output option: reed switch; hall
Standard Compliance
Technical data conforms to ISO 4064 Class B, Class C, R80, R100, R125, R160 standard for horizontal installation.
Main Technical Parameters
Working voltage of sensors: DC2.8 to 3.6V (hall), DC1-10V (reed switch)
Power supply: 3.6V Lithium Battery
Static Working Current: ≤7uA
Status Protection: Self data memory, and save data for more than 10 years.
Installation Mode: Horizontal Installation
Number of sensors: 2 (double pulse)
Working water temperature: 0.1ºC to 30ºC
Pressure loss: ≤0.1 Mpa Valve's switching time: 7s
No-load working current: 25~35 mA
Block running current: ≥ 150Ma
Motor life: valve switching times is more than 5,000 times.
Working Conditions
Water temperature: ≤50ºC for cold water meter
Water temperature: ≤90ºC for hot water meter
Water pressure: ≤1MPa (10 bar) Working humidity:<85%
Installation requirements
*The meter should be installed in horizontal position with the direction of the flow as indicated by the arrow cast in the meter body with the register face upwards. *Pipeline must be flushed before installation. *The meter should be constantly full of water during operation.
Maximum Permissible Error
In the lower zone from Qmin (Q1) inclusive up to but excluding Qt (Q2) is ±5%. In the upper zone from Qt(Q2) inclusive up to and including Qmax(Q4) is ±2% (cold water meter).
In the upper zone from Qt (Q2) inclusive up to and including Qmax (Q4) is ±3% (hot water meter). 
Accessories
Each water meter has one set couplings optional: 2pcs tube, 2pcs nut and 2pcs gasket
MAIN TECHNICAL DATA According to ISO4064 :2003 (Old Standard)
| Size | Inch | Class | Qmax | Qn | Qt | Qmin | Min reading | Max reading |
| Maximum flow | Nominal flow | Transitional flow | Min flow | |||||
| DN(mm) | m³/h | L/h | m³ | |||||
| 15 | 1/2" | B | 3 | 1.5 | 120 | 30 | 0.00005 | 99999 |
| C | 22.5 | 15 | ||||||
| 20 | 3/4" | B | 5 | 2.5 | 200 | 50 | 0.00005 | 99999 |
| C | 37.5 | 25 | ||||||
| 25 | 1" | B | 7 | 3.5 | 280 | 70 | 0.00005 | 99999 |
| C | 52.5 | 35 | ||||||
| 32 | 11/4" | B | 12 | 6 | 480 | 120 | 0.00005 | 99999 |
| C | 90 | 60 | ||||||
| 40 | 11/2" | B | 20 | 10 | 800 | 200 | 0.00005 | 99999 |
| C | 150 | 100 | ||||||
MAIN TECHNICAL DATA According to ISO4064:2014(New Standard)
| DN | Mm | 15 | 20 | 25 | 32 | 40 |
| SIZE | Inch | 1/2" | 3/4" | 1" | 11/4" | 11/2" |
| Q4(m³/h) | 3.125 | 5 | 7.875 | 12.5 | 20 | |
| Q3(m³/h) | 2.5 | 4 | 6.3 | 10 | 16 | |
| R80 | Q2(L/h) | 50 | 80 | 126 | 200 | 320 |
| Q1(L/h) | 31.25 | 50 | 78.75 | 125 | 200 | |
| R100 | Q2(L/h) | 40 | 64 | 100.8 | 160 | 256 |
| Q1(L/h) | 25 | 40 | 63 | 100 | 160 | |
| R125 | Q2(L/h) | 32 | 51.2 | 80.64 | 128 | 204.8 |
| Q1(L/h) | 20 | 32 | 50.4 | 80 | 128 | |
| R160 | Q2(L/h) | 25 | 40 | 63 | 100 | 160 |
| Q1(L/h) | 15.62 | 25 | 39.37 | 62.5 | 100 | |
| Min reading(m³) | 0.00005 | 0.00005 | 0.00005 | 0.00005 | 0.00005 | |
| Max reading(m³) | 99999 | 99999 | 99999 | 99999 | 99999 | |
| Max pressure(MAP) | 16 | 16 | 16 | 16 | 16 | |
| Max loss(ΔP) | 63 | 63 | 63 | 63 | 63 | |
| Max temperature | T50 | T50 | T50 | T50 | T50 | |
| Pulse output option | reed switch | |||||
| hall | ||||||
Dimensions and Weight
| Meter size | Length | Width | Height | Connecting Thread |
| Dia | ||||
| DN | L | W | H | D |
| mm | mm | |||
| 15 | 165 | 105 | 116 | G 3/4B |
| 20 | 195 | 105 | 116 | G 1B |
| 25 | 225 | 105 | 116 | G1 1/4B |
| 32 | 225 | 105 | 116 | G1 1/2B |
| 40 | 360 | 115 | 225 | G 2'B |
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