Thermal type gas mass flowmeter

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Thermal type gas mass flowmeter is the use of heat transfer principle of measuring gas mass flow met…

One. Product overview

Thermal type gas mass flowmeter is the use of heat transfer principle of measuring gas mass flow meter.The meter sensor consists of two reference level of thermal resistance (platinum RTD).A speed sensor T1 is quality, a temperature sensor is measuring gas temperature variation of T2.When the two RTD in the measured gas, including sensor T1 is heated to the temperature of the gas above a constant temperature difference, another sensor T2 for induction gas temperature being measured.With the increase of gas mass flow rate, air flow away more heat, the temperature of the sensor T1, to maintain the temperature difference of constant T1, T2, T1 heating power will be increased.According to the law of thermal effect of the Kim, heating power P, temperature difference delta T (T1, T2) and the mass flow rate Q has a definite mathematical relationship.

P/△T=K1+K2 f(Q)K3

K1, K2, K3 is associated with the physical properties of gas constant.

2. Product application

Low oxygen, nitrogen, hydrogen, chlorine and multicomponent gas measurement.Measuring gas mass flow rate, temperature, pressure compensation.

Low blast furnace gas, coke oven gas measurement.Low range than the big, measuring the velocity range: 0.1 Nm/s - 120 - Nm/s.

Low flue gas measurement.Low pressure loss, it is suitable for the known cross-sectional area of arbitrary shaped pipes.

Low biogas, aeration and chlorine gas measurement in water treatment.Low corrosion type sensor, suitable for measuring the corrosive gas.

Low compressed air measurement.Low insertion type sensor can online installation and maintenance.

Natural gas, liquefied petroleum gas, the torch gas, gas flow measurement, such as full range of expert algorithm, to ensure the measurement accuracy.Suitable for trade settlement or gas leak detection

Low power plant a wind blast furnace, secondary air flow measurement

When the mine ventilation or exhaust air flow measurement system

3. Meter:

Thermal type gas mass flowmeter measurement system consists of a transmitter and sensor.Two kinds of structure type for the user to choose:

Low integration type: transmitter and sensor to form a unit.

Low in size: transmitter and the installation of sensor is separated.

4. Product type:

ZY - RS thermal type gas mass flowmeter is made up of one-piece flow transmitter, flow sensor.According to the type of the flow sensor can be divided into: the plug-in and pipe sections of thermal type gas mass flowmeter.

Insert the sensor can be installed in the online, on-line maintenance.Installation process is the first outside the pipe wall welding with the external thread of the base, on the base install 1 1/2 inch stainless steel ball valve, and then use a special tool will play the 22 mm diameter hole, pipe punching after the completion of specialized tools, and finally the sensor installed on the valve and the sensor is inserted into the pipe center (DN 2000 mm) or less, when DN > 2000 mm, the inserting depth of 1 m.

If not welding of piping material (such as cast iron, PVC, glass, cement, etc.), you can use my company's production of special fixture, the sensor is fixed on the pipeline.Insert type sensor for pipe diameter: (~ 6000 mm (larger diameter ordering).

Ordinary plug-in explosion-proof type plug Ordinary plug-in flange connection

Pipe sections of thermal type gas mass flowmeter factory has equipped with pipe diameter of the same process piping and scene.Connection with the pipe flange connection or threaded connection.The flange standard accord with national standard GB/T9119-2000.Pipe sections of sensor for pipe diameter: DN15 ~ 2000 mm.

The sensor is made of stainless steel, pipe material is carbon steel or stainless steel, special material ordering.