PRODUCTS & SERVICE
Split STS Prepayment Water Meter
IR Type STS Prepaid Water Meter
IR Type Prepayment Water Meter, China

LAISON IR Type STS Prepayment Water Meter System (Hereafter referred as IR STS Water Meter) consists of smart water meter and separate IR Token Pad, which could communicate with meter via Infrared.
By applying the IR STS Water Meter System, customers could recharge meter and inquire info. at home by inputting corresponding token through IR token pad conveniently.
It is compatible with both velocity and volumetric type water meter, which comply with OIMLR49, ISO4064. and conforms to STS standard protocol IEC 62055-41,51. 

Item Model
DN15 DN20 DN25
Diameter (mm) 15 20 25
Q3 (m3/h) 2.5 4.0 4.0
R (Q3/Q1) 63
80
Accuracy Class 2
Error Q2≤Q≤Q4 2%
Q1≤Q<Q2 5%
Working temperature  0.1ºC ~ 50ºC
Max. working pressure  1.6MPa
Pressure loss ≤0.063MPa
Rated working voltage 3.6V
Static working current ≤ 9ua
Battery Lifetime ≥6 (Typical)
Pulse equivalent 0.1 m3
IP level IP68
Communication Distance 10m

1. Meter Recharge

1) Get a 20-digits token after purchasing water. 
2) Hold the “Power Key” on IR Token Pad for 2 seconds to wake up the meter, 
3) Point the IR Token Pad to the IR Receiver window on meter, input the 20-digits token successively; 
4) Press “Enter Key” after inputting 20-digits token correctly. The LCD will display the operation result. 
If recharge successfully, LCD will display purchase amount, consumed amount etc. Successively.
If recharge failed, LCD will display error codes correspondingly. 

2. Meter‘s Parameter Setting

2.1 Alarm Value
Insufficient Water Warning Function is optional in IR STS Water Meter.
By inputting corresponding token, alarm value can be set.
When remaining water in meter reaches this value, buzzer will beep and LCD show UN01 to remind customers to recharge meter in time; Valve can be opened again by inputting inquiry token “12 + Enter Key” or 20-digits Clear Event Token provided by Authority Operator,
2.2 Overdraft Value
Overdraft function is optional in IR STS Water Meter.
By inputting corresponding token, Overdraft value can be set.
When remaining water in meter becomes 0, customers could open valve to enter into overdraft function by inputting inquiry token “12 + Enter Key” or 20-digits Clear Event Token provided by Authority Operator
2.3 Clear Event State
In order to prevent external tamper to meter, Meter’s valve will be closed automatically when following events happens:
1)Meter’s cover open illegally
2)Magnetic Interference
3)Insufficient battery voltage
4)Meter Restart
Customers could open valve again if remaining water in meter > 0 by inputting inquiry token “12 + Enter Key” or 20-digits Clear Event Token provided by Authority Operator;
2.4 Meter Reset
All the customer information in meter including Purchased Volume, Consumed Volume, Meter Event Records etc. will be cleared if 20 digits Meter Reset Token is input; By which operation, it will make meter back to Factory Mode. 
2.5 Parameter Inquiry
Customers could input a 2 digits inquiry token to check detail information in meter.
The inquiry operation is similar to recharge which just needs to input 2-digits rather than 20-digits token.