Class C Removable Woltman Prepaid Electronic Valve Controlled Water Meter
Features
* One meter, one card.
* removable woltman water meter with valve control.
* A separate electronic valve.
* 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.
Standard Compliance
Technical data conforms to ISO 4064 Class B, R50, R63, R80, R100 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
Average Current: ≤15uA
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: ≤0.1Mpa
Maximum working pressure: 1Mpa
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).
MAIN TECHNICAL DATA According to ISO4064 :2003 (Old Standard)
| Meter Size | Measuring | Max Flow | Nominal Flow | Transitional Flow | Min Flow | Min Reading | Max Reading |
| mm | class | m³/h | m³ | ||||
| 50 | B | 30 | 15 | 3 | 0.45 | 0.0002 | 999999 |
| 65 | B | 50 | 25 | 5 | 0.75 | 0.0002 | 999999 |
| 80 | B | 80 | 40 | 8 | 1.2 | 0.002 | 999999 |
| 100 | B | 120 | 60 | 12 | 1.8 | 0.002 | 999999 |
| 125 | B | 200 | 100 | 20 | 3 | 0.002 | 999999 |
| 150 | B | 300 | 150 | 30 | 4.5 | 0.002 | 999999 |
| 200 | B | 500 | 250 | 50 | 7.5 | 0.002 | 999999 |
| 250 | B | 800 | 400 | 80 | 12 | 0.002 | 999999 |
| 300 | B | 1200 | 600 | 120 | 18 | 0.02 | 9999999 |
| 350 | B | 1600 | 800 | 160 | 24 | 0.02 | 999999999 |
| 400 | B | 2000 | 1000 | 200 | 30 | 0.02 | 999999999 |
MAIN TECHNICAL DATA According to ISO4064:2014(New Standard)
| Meter Size | Measuring | Q4 | Q3 | Q2 | Q1 | Min Reading | Max Reading |
| mm | R | m³/h | m³ | ||||
| 50 | 80 | 31.25 | 25 | 0.5 | 0.3125 | 0.001 | 999999 |
| 65 | 80 | 50 | 40 | 0.8 | 0.5 | 0.001 | 999999 |
| 80 | 80 | 78.7 | 63 | 1.26 | 0.7875 | 0.001 | 999999 |
| 100 | 80 | 125 | 100 | 2 | 1.25 | 0.001 | 999999 |
| 125 | 80 | 200 | 160 | 3.2 | 2 | 0.001 | 999999 |
| 150 | 80 | 312.5 | 250 | 5 | 3.125 | 0.01 | 9999999 |
| 200 | 80 | 500 | 400 | 8 | 5 | 0.01 | 9999999 |
| 250 | 80 | 787 | 630 | 12.6 | 7.875 | 0.1 | 99999999 |
| 300 | 80 | 1250 | 1000 | 20 | 12.5 | 0.1 | 99999999 |
| 350 | 80 | 2000 | 1600 | 32 | 20 | 0.1 | 99999999 |
| 400 | 80 | 3125 | 1600 | 32 | 20 | 0.1 | 99999999 |
Dimensions and Weight
| Meter size | Length L | Width B | Height H | Connecting thread | Weight | ||
| mm | mm | D | Bolt circle Dia D1 | Conncting bolt | KG | ||
| 50 | 430 | 170 | 280 | 165 | 125 | 17.5 | 4×M16 |
| 65 | 430 | 190 | 300 | 185 | 145 | 17.5 | 8×M16 |
| 80 | 530 | 200 | 340 | 195 | 160 | 17.5 | 8×M16 |
| 100 | 587 | 235 | 360 | 215 | 180 | 17.5 | 8×M16 |
| 125 | 610 | 260 | 400 | 250 | 210 | 17.5 | 8×M16 |
| 150 | 710 | 285 | 470 | 280 | 240 | 22 | 8×M20 |
| 200 | 795 | 340 | 510 | 335 | 295 | 22 | 8×M20 |
| 250 | 1025 | 493 | 730 | 395 | 350 | 22 | 12×M20 |
| 300 | 1145 | 516 | 730 | 445 | 400 | 22 | 12×M20 |
| 400 | 1330 | 631 | 830 | 565 | 515 | 26 | 16×M24 |