Product
Insertion thermal mass flowmeter
Insertion thermal gas mass flow meter delivers direct mass flow measurement without T&P compensation. It features wide turndown, stainless steel structure and RS-485 output, ideal for large-diameter industrial gas metering.
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Category:
Product
Flow meter
Thermal Gas Mass Flowmeter
- Description
-
Core Overview
The insertion thermal gas mass flow meter is a cost-effective gas metering solution based on the thermal diffusion principle, specially designed for large-diameter pipelines. The sensing probe is inserted into the pipeline through a flange base, directly measuring gas mass flow and standard volume flow without additional temperature and pressure compensation. It features an ultra-wide measuring range, excellent vibration resistance and support for online installation & maintenance, and is widely used in large-bore gas metering and process control in utility engineering, oil & gas, power generation, chemical and metallurgical industries.
Specification
Item
Insertion Type
In-line (Pipe) Type
Structural Form
Insertion mounting
In-line pipe mounting
Measured Media
Common stable gases (unstable media such as acetylene and boron trichloride not applicable)
Common stable gases (unstable media such as acetylene and boron trichloride not applicable)
Pipe Diameter Range
DN65 ~ DN4000 mm
DN15 ~ DN2000 mm
Velocity Range
0.1 ~ 120 m/s
0.1 ~ 120 m/s
Accuracy
±1% ~ ±2.5%
±1% ~ ±2.5%
Operating Temperature
Sensor: -40 ~ +250℃; Transmitter: -20 ~ +45℃
Sensor: -40 ~ +250℃; Transmitter: -20 ~ +45℃
Operating Pressure
≤ 4.0 MPa (above 4.0 MPa available by custom order)
≤ 4.0 MPa (above 4.0 MPa available by custom order)
Power Supply
DC 24V, ≥18W
DC 24V, ≥18W
Response Speed
1s
1s
Output Signal
4-20mA (photoelectric isolation, max load 500Ω); RS-485 (photoelectric isolation)
4-20mA (photoelectric isolation, max load 500Ω); RS-485 (photoelectric isolation)
Alarm Function
1-2 channels normally open contact, 24V/0.5A
1-2 channels normally open contact, 24V/0.5A
Supply Type
Integrated structure
Integrated structure
Pipe Material
Carbon steel, stainless steel, plastic, etc.
Carbon steel, stainless steel, plastic, etc.
Local Display
4-line LCD display
4-line LCD display
Display Content
Mass flow, standard volume flow, cumulative flow, standard flow velocity
Mass flow, standard volume flow, cumulative flow, standard flow velocity
Protection Grade
IP65, IP67, IP68
IP65, IP67, IP68
Sensor Material
Stainless steel
Stainless steel, carbon steel
Working Principle
The thermal gas mass flow meter operates on the thermal diffusion principle. Two temperature sensors are placed in the gas flow path: one is heated as a measuring reference, and the other detects the actual gas temperature. When gas flows through the sensor, the flowing medium takes away heat from the heated sensor, creating a stable temperature difference between the two sensors. This temperature difference is directly proportional to the mass flow rate of the gas. The built-in digital circuit processes the thermal signal and calculates the accurate mass flow value, eliminating the need for additional temperature and pressure compensation.
Key Features
● Direct mass flow measurement Truly outputs gas mass flow and standard volume flow without extra temperature and pressure compensation, simplifying system configuration and ensuring stable metering accuracy.
● Ultra-wide measuring range Detectable gas velocity ranges from 0.1 m/s to 120 m/s, covers both low-flow monitoring and high-load operation, and supports gas leak detection scenarios.
● Superior vibration resistance & long service life No moving parts or pressure sensing components inside the sensor, immune to pipeline vibration interference, with stable long-term performance and low failure rate.
● Easy online installation & maintenance Insertion structure with flange mounting; customized retractable version supports online installation and maintenance without production shutdown.
● Fully digital intelligent design Adopts all-digital measurement circuit, with high measurement accuracy, reliable performance and convenient on-site debugging and maintenance.
● Industrial communication capability Built-in RS-485 communication interface, seamlessly connects with PLC, DCS and SCADA systems to realize factory automation and centralized management.
● Wide gas compatibility Suitable for single and multi-component gases, including oxygen, nitrogen, hydrogen, chlorine, blast furnace gas, coke oven gas, natural gas, LPG and flare gas.
● Cost-effective for large pipes Much lower investment than full-bore flow meters for large-diameter pipelines, ideal for energy metering and flow monitoring of large gas pipelines.
Applications
1.Utility Engineering Gas monitoring for general pipeline systems, biogas, coal gas, natural gas, LPG and boiler preheated air in power, gas and water treatment projects.
2.Oil & Gas Industry Energy exchange, well gas recovery, fuel gas metering, gas quality analysis, leak detection, natural gas measurement and flare gas monitoring.
3.Power Generation Industry Gas distribution measurement in fuel systems, gas measurement for boilers and auxiliary systems, combustion furnace gas flow measurement, hydrogen measurement, and primary/secondary air measurement for blast furnaces.
4.Chemical Industry Flue gas circulation monitoring, gas flow metering in sampling systems, induced draft fan gas flow measurement, ammonia measurement in fertilizer plants, and various gas metering for battery factories.
5.Metallurgy Industry Gas addition measurement in steel mills, blast furnace gas and coke oven gas flow metering, heating furnace fuel gas monitoring, and heat treatment furnace atmosphere control.
6.Pulp & Paper Industry Gas measurement in wastewater treatment systems, flue gas flow monitoring, boiler secondary/tertiary air recovery, and boiler fuel & air supply measurement.
7.Food & Pharmaceutical Industry Fresh air supply in processing, CO₂ treatment in breweries, hot air flow for bottle sterilizers, gas flow measurement in thermal oxidation processes, and ventilation & exhaust control.
8.Environmental Protection Biogas utilization measurement, chlorine gas treatment metering, aeration tank gas measurement in sewage treatment, and flue gas emission monitoring for SO₂ and NOₓ.
9.General Industrial Applications Factory compressed air measurement, pulverized coal combustion air-fuel ratio control, and exhaust hot gas flow control in cement vertical mills.
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The company's product range includes flow meters, level gauges, and temperature, pressure, and display instruments.
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Tel:
+86 18613735833
Email:
sales1instrument@163.com
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Production Address
No.73,Sizhuangding Village,north industrial park, Muye Dist., Xinxiang, China
Marketing Center
17th Floor, Jingye Cross border Trade Building (Intersection of Jinsui Avenue and Xin'er Street)
