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Separated Thermal Mass Flowmeter

规格型号:
LCD display: mass flow, standard volume flow, cumulative flow, standard time, cumulative running time, standard flow rate etc.
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INTRODUCTION

Thermal mass flow meter contains two platinum resistance temperature sensors. The thermal principle operates by monitoring the cooling effect of a gas stream as it passes over a heated sensor. Gas flowing through the sensing section passes over two sensors one of which is used conventionally as a temperature sensor, whilst the other is used as a heater. The temperature sensor monitors the actual process values whilst the heater is maintained at a constant differential temperature above this by varying the power consumed by the sensor. The greater the gas velocity, the greater the cooling effect and power required to maintain the differential temperature. The measured heater power is therefore a measure of the gas mass flow rate.

TECHNICAL DATA

Suitable Diameter DN15~DN400mm (flange)  DN65~DN3000mm (Insertion type)
Medium Various gases (Except the acetylene)
Velocity  0.1~100 Nm/s
Accuracy  ±1.5%
Working Temperature Snesor: -40~220℃  
Transmitter: -20~45 ℃
Working Pressure  1.0- 4.0MPa
Power Supply  24VDC+ 220VAC dual power supply
Flow unit Nm3/h, Nm3/min, Nl/h, Nl/min, t/h, t/min, kg/h and kg/min
Output   4~20mA, Pulse, RS485, HART
Display   4 lines LCD
Mass flow, volume flow in standard condition, flow totalizer, data and time, working time, and velocity, etc
Protection Class  IP65, IP68
Sensor material   SS304, SS316(optional)

FEATURE

◆Measuring the mass flow or volume flow of gas.

◆Do not need to do temperature and pressure compensation in principle with accurate measurement and easy operation.

◆Wide range: 0.1Nm/s~100Nm/s for gas. The meter also can be used for gas leak detection.

◆Good vibration resistance and long service life. No moving parts and pressure sensor in transducer, no vibration influence on the measurement accuracy.

◆Digital design, high accuracy and stability.

◆Configuring with RS485 or HART interface to realize factory automation and integration.

APPLICATION

Oxygen, nitrogen, hydrogen, chlorine and multi-component gas measurement.

Blast furnace gas, coke oven gas measurement.

Flue gas measurement.

Measurement of aeration and chlorine in methane and water treatment.

Compressed air measurement.

Gas flow measurement, such as natural gas, liquefied gas, flare gas etc.

Measurement of primary, secondary air flows of blast furnace in power plants.

Measurement of ventilation or exhaust system flow in mines.

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User Manual

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Professional manufacturer and exporter

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The Cross of  9th Avenue and 2th Longhai Road,  Longting District, Kaifeng City, Henan Province, China.

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