JC**0 Thermal Mass Gas Flow Meter

The principle is that a fluid flowing past a heated temperature sensor removes a known quantity of heat as it passes.In a thermal flowmeter, the fluid has to pass two temperature sensors.

BCST smart flow meter Introduction

The principle is that a fluid flowing past a heated temperature sensor removes a known quantity of heat as it passes.In a thermal flowmeter, the fluid has to pass two temperature sensors. One sensor obtains a reference value by measuring the actual process temperature. The second sensor is a heating element and it receives precisely as much energy as is needed to compensate for dispersed heat and maintain a precisely defined temperature difference.

The higher the mass flow past the heated temperature sensor, the more heat is dissipated and the more power has to be to the element to maintain the temperature difference.

Heating current, therefore, is a measure of the mass flow of the gas.

Due to the sensor temperature is always *0℃ higher than the medium temperature (environment temperature), and the meter adopts method of constant differential temperature, therefore the meter do not need to do temperature and pressure compensation in principle.

BCST Thermal Mass Gas Flow Meter Features

1. Measure mass flow , no need for humidity and pressure compensation.

2. Large rangeability, flow velocity: 0.1 Nm/s~**0Nm/s.

3. No pressure drops, applicable to any section pipe.

4. Anti-corrosion, applicable to corrosive gas.

5. Online installation and maintenance.

6. Measures mass flow directly - without additional pressure and temperature s

7. Accurate measurement and operation at very low gas pressures and flow rates

8. Negligible pressure drop

 

Insert type Pipe type

Medium Single gas ( except acetylene gas) or mixed gas of fixed

Pipe size DN******0mm DN******0mm

Velocity 0.1Nm/s~**0Nm/s ( standard working condition *0 ℃**1.*3Kpa)

Accuracy *1%

Medium temperature **0~**0℃

Pressure 2.5Mpa 4.0Mpa

Power supply AC**0V or DC*4V for integral converter and AC**0V for split converter.

Response time ≦1s

Signal output 4~*0mA RS***5,Modbus  

Display Instantaneous flow, mass flow, volume flow, cumulative flow, Beijing time, running time.

Sensor IP code IP*8

Converter IP code IP*7 for integral typeIP *5 for split hanging typeIP *2 for split box type

Explosion proof degrade Exd IΙ CT 4