Products
CH-LWQ thermal gas mass flow meter, based on the principle of heat conduction technology design, combined with Newton's law of thermodynamics, through the measurement of the pipeline medium through the probe when the heat carried away, direct measurement of the mass flow rate or the standard flow rate.TGF600 can be widely used in a variety of gases in the mass flow rate and the standard flow rate measurement, without the need for temperature and pressure compensation. TGF600 adopts constant power design, which has the features of extremely low lower limit of measurement, wide range ratio, high measurement accuracy and easy installation. The products are widely used in compressed air, gas extraction, natural gas measurement, aeration measurement, emission gas monitoring, process gas control and many other fields.
Features
Plug-in design, can be installed online with pressure;
Suitable for a wide range of pipe diameters and any shape of pipe with known cross-sectional area;
Large range ratio and wide range of measured flow rates;
No moving parts, no pressure loss;
Measurement of gas mass flow without temperature and pressure compensation;
Fully isolated electrical structure to filter out external interference;
Energy-efficient power supply design with extremely low power consumption;
Wide power supply voltage input range to adapt to a variety of complex power supply environment;
Large LCD display with two lines, easy to read;
With ModBus and HART field bus interface.
Application
1、Oxygen, nitrogen, hydrogen, chlorine and multi-component gas measurement. (Except acetylene gas).
2、Blast furnace gas, coke oven gas measurement.
3、Flue gas measurement.
4、Biogas, aeration in water treatment and chlorine measurement.
5、Compressed air measurement.
6、Natural gas, liquefied gas, flare gas and other gas flow measurement.
7、Power plant blast furnace primary air, secondary air flow measurement.
8, mine ventilation or exhaust system flow measurement.
Features
1、Measurement of gas mass flow without temperature and pressure compensation.
2, range ratio, measuring flow rate range: 0.1Nm / s ~ 100Nm / s.
3、No pressure loss, applicable to any shape of pipeline with known cross-sectional area.
4、Corrosion-resistant type sensor, suitable for measuring corrosive gases.
5, the full-range band of expert algorithms, especially suitable for large-diameter measurement to ensure the accuracy of the measurement, suitable for trade settlement.
6、Can excellently complete the leakage detection of process pipeline and equipment work.
7、The amount of construction is extremely small, due to the insertion structure, can be installed and maintained online.
8、Base type instrument can be displayed on the spot and with alarm control.
| Measuring medium | All gases (except acetylene) |
| Pipe Diameter Range | DN15~2000 |
| Flow rate range | 0.1Nm/s~100Nm/s(Standard conditions 20°C, 101.33 KPa) |
| accuracy | ±1% |
| Medium temperature | Normal temperature:-20~+100℃ High temperature:-20~+350℃ |
| work pressure | 4.0MPa |
| Power supply | One-piece converter AC220V or DC24V1A Split converter: AC220V |
| responsiveness | 1s |
| output signal | 4~20mA RS~485 |
| Measurement display | Mass flow rate, nominal volume flow rate, cumulative flow rate, Beijing time, cumulative running time. |
| Sensor protection class | IP68 |
| Converter protection class | Integral: IP67 Split Wall Mount: IP65 Split Tray Mount: IP52 |
| Explosion-proof grade | EXd II CT4 |
| Alarms | 1-2 relay nodes: 5A/AC220V, 5A/DC30V self-setting |
| Sensor Material | 1Cr18Ni9Ti、Hastelloy, titanium, 316L, aluminum, 304 stainless steel |
| Probe Material | 1Cr18Ni9Ti、316L、304 |
V. Product Composition
Thermal gas mass flow meter consists of integrated flow converter and flow sensor. According to the type of flow sensor is divided into: insertion type and pipe section type thermal gas mass flow meter.
Pipe section type thermal gas mass flow meter: the factory has been equipped with the same inner diameter of the pipeline and the field pipeline process pipeline, and the field pipeline connection for the flange or threaded connection, flange standards in line with the national standard GB/T9119-2000.
Pipe section type sensor applicable pipe diameter: DN15 ~ 2000mm, sensor material is stainless steel, pipe material is carbon steel or stainless steel, special materials specified when ordering. (The following table)
| pipe diameter | Scfm | Nm3/h |
| 3"(80mm) | 0-1600 | 0-2720 |
| 6"(150mm) | 0-6400 | 0-10870 |
| 8"(200mm) | 0-11100 | 0-18860 |
| 10"(250mm) | 0-18200 | 0-30920 |
| 12"(300mm) | 0-24900 | 0-42300 |
| 16"(400mm) | 0-43350 | 0-73700 |
| 20"(500mm) | 0-67700 | 0-115150 |
Note: To determine whether the inserted flow rate can meet the requirements, the *** flow rate divided by the cross-sectional area of the pipe to see whether the flow rate is within the range to be described.
Measuring pipe diameter
|
|
Scfm(Standard cubic feet per minute) | Nm3/h(standard cubic meters per hour) | ||
| pipe diameter | minimal | *** | minimal | *** |
| 0.25" | 0-0.22 | 0-16 | 0-0.37 | 0-27 |
| 0.5" | 0-2.1 | 0-48 | 0-3.6 | 0-82 |
| 0.75" | 0-3.7 | 0-120 | 0-6.3 | 0-204 |
| 1" | 0-6 | 0-192 | 0-10 | 0-326 |
| 1.5" | 0-15 | 0-450 | 0-25 | 0-760 |
| 2" | 0-23 | 0-750 | 0-39 | 0-1280 |
| 2.5" | 0-35 | 0-1090 | 0-59 | 0-1855 |
| 3" | 0-50 | 0-1600 | 0-85 | 0-2720 |
| 4" | 0-90 | 0-2880 | 0-153 | 0-4893 |
| 6" | 0-200 | 0-6400 | 0-340 |
0-10870 |












