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Thermal gas flow meter thermal mass flow meter

Thermal gas flow meter
thermal mass flow meter
thermal mass flow sensor

INQUIRY

Introduction

Thermal Type Gas Mass Flowmeter utilizes the principle of heat exchange to measure fluid-flow. This meter employs method of constant temperature difference to accurately measure gas mass flow, and it has the advantages of small size, high degree of digitization, easy installation, accurate measurement, etc.

The sensor part consists of two platinum resistance converters of reference level. It utilizes bridge type loop circuit, with one converter measuring fluid temperature, and another maintaining constant temperature difference that is higher than fluid temperature. The measurement can be made under high temperature and high pressure situation.

Advantages

It is a true mass flowmeter that can conveniently and accurately measure gas-flow rate without temperature and pressure compensation, from which users can get gas mass flow or standard volume flow.

Large ratio of measuring range. It can measure gas with velocity of flow from 100Nm/s to 0.5Nm/s, and be used in gas leak hunting.

Good anti-seismic performance and long useful life. The converter doesn’t contain movable part and pressure sense part, so that the measuring accuracy will not be influenced by shaking.

Easy installation and maintenance. If possible, on line installations and maintenance are allowed. (See Safety Notice)

Digital design. The meter utilizes digital circuit measurement to assure accurate result and convenient maintenance.

Factory automation and integration can be achieved by using RS-485 or HART communication.

[Parameters]

Production Name	High Quality 1.0% Precision SS316L Thermal Gas Mass Flow Meter
Medium	all kinds of gas
Diameter	DN20~DN2000
Flow rate	0.5~100Nm/s
Accuracy	1.0%;1.5%
Temperature	Sensor:Ambient temperature:-10~200℃
	Max temperature:10~350℃
	converter: 10~45℃
Pressure	Medium pressure≤4.0Mpa
Power supply	Integrated:DC24V or AC220V≤180W
	Splited:AC220V≤19W
Feedback speed	1s
Output	Standard output:4~20mA;Can customized for RS485
Material	Stainless steel 304 material
Display	LCD Display
Display	mass flow;volume flow;total flow;time;temperature;standard flow.
Protection class	IP67
Converter material	stainless steel material

1.Flow range

Item	The thermal mass flow meter flow range table
Diameter	Flow range (Nm3/h)
DN20	1.2~120
DN25	2.5~168.5
DN32	4~275
DN40	6~430
DN50	9~671.5
DN80	20~1718.5
DN100	30~2685
DN150	60~6045
DN150	60~6045(plug-in)
DN200	120~12738.5(plug-in)
DN250	150~18779(plug-in)
DN300	200~28000(plug-in)
DN400	350~48955.5(plug-in)
DN500	600~77177.5(plug-in)
DN600	800~100000(plug-in)

Installation And Connection
If installed outside, the meter should be covered by sky shade to avoid exposing to the sun and rain.
Do not install in sharp pounding situation.

Do not expose to dangerous environment heavily charged with corrosive gas.

Do not share power source with polluting equipment such as converter and welding machine,
and power conditioner can be installed for converter if necessary.

Installations and Connection of All-in-one Meter
Exterior Appearance Construction Drawing

All-in-one plug type should be inserted in axes of the measured pipeline; therefore,
the length of overcastting staff depends on the caliber of the measured pipeline. If impossible,
the manufacture will offer calibration coefficient to accomplish accurate measurement.
All-in-one full-tube type employs flanged connection, in accordance with GB/T9119-2000(details see appendix 2).