Kontaktlosen IC-Karte Wärmezähler (DN25)

General Introduction Contactless IC Card Heat Energy Meter can measure heat power passed through pipes. It is more advanced than RLB since it is prepaid and use RF card to activate meter. It consists of flow sensor, microprocessor, temperature sensor and prepaid module. 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 technique of wireless digital monitoring to supervise and calculate heat power. 3. No mechanic gears, no magnetism sensor, wear resistance, anti-corrosive and anti-attack. 4. Alarming when low voltage. 5. Alarming when temperature sensor is disconnected or in case of short circuit. 6. Flow rate has 8 levels and can be separately adjusted automatically, high accuracy. 7. Smart lower power consumption according to flow speed. 8. Update online. 9. Data backup and automatic correction. 10. Ultra-low energy consumption. 11. Electric floating ball valve patent technique Technique Specifications Flow Sensor CaliberCommon Flow RateMin Flow RateMax Flow Rate15mm1500L/h30L/h3000L/h20mm2500L/h50L/h5000L/h25mm3500L/h70L/h7000L/hMin Flow Rate for Display: 0.01m3 (working state) 0.00001m3 (testing state) Min Heat Power for Display: 1kWh (working state) 0.001kWh (testing state) Working Condition of Temperature SensorMin Temperature Difference 1 or 3 Celsius Max Temperature Difference 90 Celsius Min Display Temperature 0.1 Celsius Static Working Current < 7μA Battery Service Life > 5 years Digit Number of LCD 8 numbers Max Accumulated Working Time 4.2x109 hours (Meter only displays final 8 numbers when accumulated working time is more than 99999999 hours) Max Accumulated Flow Rate 4.2x109 m3 (Meter only displays final 8 numbers when accumulated flow rate is more than 999999.99m3 ) Accuracy Grade or Grade Alarm kWh 1000kWh Pressure Resistance 1.6MPa Model RLBF---measure by heat power unit, DN15/20/25 RLBT--- measure by hour unit, DN15/20/25