Thermal Gas Flowmeter [Insertion Type]

Model: WCFM300 series
Features: wide rangeability, extremely low minimum flow velocity, high accuracy, good repeatability, easy maintenance

Product Introduction

The WCFM300 series thermal gas flowmeter [insertion type] is an instrument that measures gas flow based on the thermal diffusion principle. It overcomes the drawback of thermal mass gas flowmeters using the constant temperature difference principle, which, when measuring coal gas flow, suffer large zero drift caused by moisture, oil and impurities in the gas, making accurate measurement impossible. It features a wide rangeability, an extremely low minimum flow velocity, high accuracy, good repeatability and easy maintenance. It is widely used for gas flow measurement in metallurgy, power, food, boilers, pharmaceuticals, petrochemical and environmental water treatment industries, and can also be used to measure the mass flow of wet gases, such as real-time detection of gas drainage in mines, supply air, and air volume (velocity) in exhaust systems.

Features

1. Suitable for measuring various single or mixed gases, and for installation in large-diameter circular, rectangular or square pipes;

2. Uses a platinum resistance temperature sensor with new patented technology;

3. Wide rangeability, extremely low minimum flow velocity;

4. High accuracy, good repeatability;

5. Low straight pipe requirements before and after installation: 5D upstream and 3D downstream is sufficient;

6. Independent of gas temperature and pressure, no temperature/pressure compensation required, directly measures gas mass flow;

7. Wide-screen LCD display for direct reading of instantaneous and cumulative flow;

8. Low overall power consumption; can be powered by internal batteries or an external power supply;

Technical Parameters

Measuring Medium	Suitable for various single or mixed gases (dusty, sandy, humid and various corrosive gases)	Pipe Diameter Range	DN10~DN300
Flow Velocity Range	0.1Nm/s~100Nm/s (standard conditions 20℃, 101.33kPa)	Accuracy	±2% of reading,±1% of full scale
Repeatability	0.2% of full scale	Rangeability	100:1 (depending on the calibrated flow range)
Medium Temperature	-10℃~100℃ / -10℃~200℃ optional	Nominal Pressure	≤4.0MPa
Power Supply	24VDC/600mA; 220VAC/2W; 110VAC/3W	Response Speed	1S
Output	4~20mA / RS232 / RS485 / alarm output	Flow Display	Large-screen LCD display
Alarm	1~2 relay outputs, 5A/220V, 5A/30VDC, keypad settable	Protection Class	IP65
Explosion-proof Class	Intrinsically safe / flameproof	Sensor Diameter	φ2.5, φ3. φ4
Sensor Material	316 stainless steel / Hastelloy / titanium	Installation Straight Pipe Section	5D upstream, 3D downstream
Ambient Temperature	-40℃~85℃ (no display); -30℃~70℃ (with display); humidity below 90%RH

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