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RLB-F Prepaid Contactless IC Card Heat Energy Meter  
RLB-F
General Introduction  
RLB-F is used to measure and display heat power in pipes. One household with one meter and one IC card for consumer. It is more advanced than RLB since it is prepaid and use RF card to activate meter. It consists of flow sensor, microprocessor and temperature sensors and prepaid programme. It also can be used to measure cold power if connect temperature sensors reversely.  
Characteristics  

1. Prepaid, RF card, waterproof and reliable performance.

2. Latest patent technology of wireless digital monitoring to supervise and calculate heat power.

3. No mechanic gears and magnetism sensor, wear resistance, anti-corrosive and anti-attack.

4. Alarm when lower or voltage or being attacked.

5. Alarm when temperature sensor is disconnected or on condition of short circuit.

6. Flow and temperature has 10 levels and can be separately adjusted automatically, high accuracy.

7. Smart lower power consumption according to different flow speeds.

8. Update online.

9. Data backup and automatic correction.

10. Ultra-low energy consumption.

  
Technical Specifications  
Flow Sensor

Caliber

(mm)

Common Flow

(L/h)

Min Flow

(L/h)

Max Flow

(L/h)
15
1500
30
3000
20
2500
50
5000
25
3500
70
7000

Min Flow for Display:  0.01M3 (on working state)
                                        0.00001M3 (on testing state)

Min Heat Power for Display:  1kWh(on working state)
                                                    0.001kWh(on testing state)

Working Condition of Flow Sensor

Min Temperature Difference

3¡æ

Max Temperature Difference

90¡æ

Max Water Temperature of Entrance

95¡æ

Min Water Temperature of Entrance

50¡æ

Min Water Temperature of Exit

5¡æ

Max Water Temperature of Exit

94¡æ

Min Display Temperature

0.1¡æ

Static Working Current

< 9¦ÌA

Battery Service Life

> 5 years

Digit Number of LED

8 number

Max Accumulated Working Time

4.2x109 hours (Meter will display final 8 numbers when accumulated working time is more than 99999999 hours)

Max Accumulated Flow

4.2x109 m3 (Meter will display final 8 numbers when accumulated flow is more than 99999999m3 )

Accuracy

Grade ¢ò or Grade ¢ó

Alarm kWh

1000kWh

Pressure Resistance

1Mpa