Place of Origin:
Hunan
Brand Name:
Stron
Certification:
STS
Model Number:
STW36-S
STS IP68 Brass Body Non-return Valve Smart IC Card Prepaid Water Meter
Product introduction
The STW36-S is RFID card type prepaid water meter with STS standard.Its battery with 6-8 years life and LCD has real time o-clock.With ingress protection IP68 waterproof can make it perfectly work even under water.Automatic valve controlling has perfect function to monitor tamper action or no credits,valve will be closed then.Step price can be set by corresponding TOKEN.The magnetic induction zone is used to swipe RFID Card and check information by short codes.Their basic function is meter recharge by inputting 20 digits TOKEN;Alarm value setting by inputting corresponding TOKEN;Non-return valve inside for preventing back-flow.
Certificates
ISO 9001,ISO 14001,ISO 4046,STS
Working process
| When the user uses water, the water collection device starts to collect the water consumption, and converts it into the required electronic signal to the microcomputer module for measurement, and displays it on the LCD display module. |
| When the user's amount of water drops to a certain value, the microcomputer module will have sound alarm, prompting the user should take the card to buy water. |
| If the amount of water is exceeded, the microcomputer module will automatically close the electric control valve and cut off the water supply. |
| Until the user has inserted the paid IC card to restart the valve for water supply. |
Main functions
1. Prepayment:users recharge by smart RFID card,after recharge,then get water available
2. Ultra-low power:battery inside has 6-8 years life
3. Low credit alarm:alarm value can be set by TOKEN,buzzer will give alarm when it is low credit
4. Anti-tamper magnetic field protection:meter will automatically close the valve after detection of magnetic field and cover-opening event
5. History data recording:it can record the history data within 10 years
6. Low Battery detection:buzzer will give alarm to remind users to change battery in time
7. Step Tariff:step tariff can be set by management card
8. Non-return valve:non-return valve inside for preventing back-flow
9. Prepaid and post-paid switch:meter can be switched to prepaid or post-paid mode
Technical parameters of different size
| Size | DN15 1/2” | DN20 3/4” | DN25 1” | |
| Length(L) | 165/190 | 190 | 225/260 | |
| Width(W) | 99 | 99 | 103 | |
| Height(H) | 104 | 106 | 114 | |
| Connecting Thread | G3/4B | G1B | G1-1/4B | |
| Overload flow rate Q4 | 3.13 | 5 | 7.87 | |
| Permanent flow rate Q3 | 2.5 | 4 | 6.3 | |
| Transitional flow rate Q2 | 0.04 | 0.064 | 0.1 | |
| Minimum flow rate Q1 | 0.025 | 0.04 | 0.063 | |
| Ratio ”R” Q3/Q1 | 100 | 100 | 100 | |
|
Maximum pressure loss
|
16Bar
|
16Bar
|
16Bar
|
|
|
Maximum reading
|
0.6Bar
|
0.6Bar
|
0.6Bar
|
|
|
Max temperature
|
99999
|
99999
|
99999
|
|
|
Error |
Q1≦Q≦Q2
|
5%
|
5%
|
5%
|
|
Q2≦Q≦Q4
|
2%
|
2%
|
2%
|
|
Features
✽ Maximum working pressure: 16 Bar
✽ Maximum pressure loss: 0.6 Bar
✽ Maximum reading: 99999
✽ Working temperature: <50℃
✽ Error: Q1≤Q≤Q2 5%;
Q2≤Q＜Q4 2%
Meter dimension
RFID card parameters
Type:Philips Mifare S79 Card
Inductive mode:Initiative transmit, RF Powe-6dBm transmit every second
Material:ABS, heat resistant, White color
Dimension:86mm×55mm×4mm
Protection class:IP68
Signal modulation:GFSK
Communication speed:1Mbit/s / M1 106KBPS
Operation frequency:2.44GHz / M1 Card 13.56MHz
Working life :>5 years
Operating temperature:-20℃-+50℃
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