STS Prepaid Water Meters

The STS-15E which consists of Customer Interface Unit (CIU) and wireless remote (valve-controlled) water meter is highly intelligent for residential use in respect of water consumption. The water meter is a horizontal dry dial multi-jet cold/hot water meter designed for measuring flows of cold/hot potable water. It is a high reliable measurement instrument, which is conform to OIMLR49/ISO4064/EN14154 standards. The CIU acts as a remote display and keypad for water meter, and it could be connected with meter by LoRa interface .

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Description

2.Features and benefits

u Integrated design of water meter and valve

u Separation design of water meter and CIU, the water meter can be installed in a place where you can't touch it .

u AMR/AMI function, LoRa communication (Optional)

u IP68 protection(Electronic part)

u STS Pre-paid communal water point 15mm water meters complete with its Software and accessories including fittings.

u Walk-by AMR complete with all accessories for automatic meter reading and uploading the data.

u Hand-held point of sale - vendor portable battery + charger.

u Server/Desktop Computer or Laptop Computer/A4 printer.

u Field service terminal

3.Functions description

u LCD display

u Push button

u STS prepayment

u Insufficient water warning

u Self-defined overdraft

u Anti-storage (purchase limitation)

u Anti-magnetic Interference& record

u Low-Battery detection & record

u Anti-tamper detection & record

u History data record

u Event log

4. Specifications

Main specification of Water Meter

Item	Parameter
Standard	ISO 4064:2014
Type	Dry cold/hot water
Install type	Horizontal
DN（mm）	15	20
Length（mm）	165	190
Min. flowrate qmin（L/h）	15	25
Transitional flowrate qt（L/h）	22.5	37.5
Permanent flowrate qp（L /h）	1500	2500
Overload flowrate qs（L /h）	3000	5000
Accuracy class	R80/R100/R160
Indicating device	Character wheel+ indicator
Reading range	mechanical：0-99999.99995， electronics：0-99999.9
Pressure classes	MAP16(1.6MPa/16bar)
Temperature classes	Cold:T30（Max temperature 40°C） Hot: T30/T90
Pressure loss classes	Δp63（0.063MPa/0.63bar）
Flow profile sensitivity classes	U3/D3
Electromagnetic compatibility grade	E1，B
Environmental temperature	5℃～55℃；≤ 93% RH
IP degree	IP68
Material	Cu

Electronic characteristics of Water Meter

Item	Parameter
Power source	ER18505 Lithium battery(replaceable)
Battery Voltage	3.6 V
Pulse input	0.1m3/p
RF interface	LoRa (430-435)MHz
Max. transmitting power	50mW

Main specification of CIU

Item	Parameter
Operate temperature range	-10℃～55℃
Limit operate temperature range	-35℃～65℃
Transfer and store temperature range	-40℃～70℃
Relative humidity	30%～95%,non frost
Total power consumption	<4VA,2W
Fast transient burst	4kV For communication line：1kV
electrostatic protection	Air ：15kV；Contact ：8kV
Display	LCD
Power supply	AC85-265V