General Introduction
RLB-C series ultrasonic heat meter is consisted of flow sensor, microprocessor and matched pair temperature sensor. The microprocessor gets the flow signal through flow sensor and the signal of water temperature at the entrance and exit from the temperature measuring circuit, and then calculates released heat by the heat-carrying liquid according to the standard heat calculation formula.
Characteristics
1. Alarms when voltage is low.
2. Automatic data correction technology.
3. Alarms when the temperature sensor is disconnected or has a short cut.
4. High definition and wide temperature LCD display.
5. Flow rate has 8 levels and are separately adjusted, with high precision.
6. Ultra-low energy consumption (static power consumption is less than 7uA ).
7. The tube adopts forging technology.
8. Measuring mechanism has no moving parts (means no impeller), and no wear and tear forever. The measuring accuracy will not be influenced by using period.
9. There is optic electric interface, and the communication distance is more than 2 meters, adopt infrared tool can read meter.
Technical Parameters
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Flow sensor
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Caliber(mm)
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Common flow rate
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Mini flow rate
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Max flow rate
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DN15
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1.5 m3/h
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0.03 m3/h
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3.0 m3/h
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DN20
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2.5 m3/h
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0.05 m3/h
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5.0 m3/h
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DN25
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3.5 m3/h
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0.07 m3/h
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7.0 m3/h
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Minimum display of flow rate: 0.01 m3 (working status) 0.00001 m3 (testing status)
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Minimum display of heat power: 1kWh(working status) 0.001kWh(testing status)
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Temperature sensor
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Min temperature difference
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1°C or 3°C
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Max temperature difference
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90°C
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Min display temperature
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0.1°C
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Static working current
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< 7μA
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Power supply
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3.6V, by battery
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Battery service life
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> 6 years
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Digit number of LCD screen
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8 number
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Max accumulated working time
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4.2x109 hours(Only final 8 number can be displayed when accumulated working time is more than 99999999 hours)
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Max accumulated flow rate
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4.2x109 m3 (Only final 8 number can be displayed when accumulated flow rate is more than 999999.99 m3)
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Accuracy
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Grade 2 or Grade 3
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Pressure resisting
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1.6Mpa
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Loss of pressure
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≤0.025Mpa
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Working status indicator
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Twinkling of our company’s logo on the top left corner of the LCD
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