Place of Origin:
Hunan
Brand Name:
Stron
Certification:
STS
Model Number:
STW36-S
Anti-tamper Class B Non-return Valve IC Card Prepaid Water Meter
Product introduction
STW36-S is a dry and horizontal IC card smart prepayment water meter launched by Stron company.Usres recharge water based on the smart RFID card.This smart product has independent intellectual property rights. Water meter’s electronic module components made new ultra-low power consumption processor as the core,battery voltage detection and RFID card reading/writing ,etc. "Stron" prepaid dry smart water meter has functions of water flow measurement, automatically controlling valve, anti-magnetic interference, no-return water,TOU tariff,perfect IP68 waterproof etc. It has perfect advantages of low power consumption,low credit alarm of buzzer,high precision and the automatic maintenance of valve and convenient use and installment.
Certificates
ISO 9001,ISO 14001,ISO 4046,STS
Main functions
1.Prepayment:users first recharge by smart RFID card,and then get water available
2. Ultra-low power:with 6-8 years life of battery inside
3. Low credit alarm:buzzer will constantly give alarm when it is low credit in the meter
4. Anti-tamper magnetic field protection:meter will automatically close the valve after detecting of magnetic field and cover-opening event
5. History data recording:more than 5 years for data storage
6. Low Battery detection:when it is low battery,buzzer will give alarm to remind users
7.Step Tariff:step tariff can be set by management card on request
8.Non-return valve:non-return valve inside to have non-return water
9.Prepaid and post-paid switch:prepaid or post-paid mode can be switched as agreed.
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%
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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