1.Electronic heat energy meter 2.Alarming when low voltage 3.Data backup ,automatic correction 4.Ultra-low energy consumption
General Instruction
Digital Electronic Heat Energy meter can measure heat power passed through pipes. It consists of flow sensor, microprocessor and temperature sensor. Microprocessor obtains flow signals through flow sensor and signals of water temperature at the entrance or exit by temperature measuring circuit, and then it will calculate the released heat power by heat-carrying liquid according to the standard of heat calculation formula. It also can be used to measure cold power if connect temperature sensors reversely.
Characteristics
1. Latest patent technique of wireless digital monitoring to supervise and calculate heat power.
2. No mechanic gears, no magnetism sensor, wear resistance, anti-corrosive and anti-attack.
3. Alarming when low voltage.
4. Alarming when temperature sensor is disconnected or in case of short circuit.
5. Flow has 8 levels and can be separately adjusted automatically, high accuracy.
6. Smart lower power consumption according to flow speed.
7. Update online.
8. Data backup and automatic correction.
9. Ultra-low energy consumption.
Standard
European Standard EN1434 and 01ML-R75 International Standard
CJ128-2000 Heat Meter Issued by State Construction Department of China
Technique Specifications
Flow Sensor | Caliber | Common Flow Rate | Min Flow Rate | Max Flow Rate | |
15mm | 1500L/h | 30L/h | 3000L/h | ||
20mm | 2500L/h | 50L/h | 5000L/h | ||
25mm | 3500L/h | 70L/h | 7000L/h | ||
Min 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 Sensor | Min 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 B or Grade C | ||||
Pressure Resistance | 1.6MPa | ||||
Pressure Loss | ≤0.025MPa | ||||
Model
RLB---common heat meter, LCD display, DN15/20/25
Digital Electronic Heat Energy meter
