Insertion Type Thermal Gas Mass Flow Meter

Name: Insertion Type Thermal Gas Mass Flow Meter
Brand: Anhui Jujie Automation Technology Co., LTD.
Availability: InStock

Insertion thermal gas mass flow meter uses thermal diffusion principle, with plug-in stainless probe for DN25 above pipelines. Directly measures gas mass without pressure-temperature compensation, equipped local LCD, supporting pulse,4-20mA, RS485 signals, easy mounting without pipe cutting.

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Features of Insertion Type Thermal Gas Mass Flow Meter

Plug-in structure, no pipeline cutting, convenient installation and disassembly
Suitable for gas pipelines DN25~DN2000
SS316L corrosion-resistant measuring probe
Direct mass flow measurement, no T&P compensation needed
Ultra-low starting flow, tiny pressure loss
Local LCD shows instantaneous and cumulative flow
Multiple outputs: 4-20mA, pulse, RS485, relay alarm
Low cost compared with full pipe type for large pipes
Wide adaptability for air, biogas, nitrogen, natural gas
IP65 protection, optional intrinsic safety explosion-proof

Its insertion probe design creates minimal obstruction inside the pipeline, helping reduce pressure loss and installation cost, especially for large-diameter gas lines. The meter can be used for compatible gases such as compressed air, nitrogen, natural gas, biogas, and other industrial gas applications.

For other installation configurations, explore JUJEA's full range of thermal gas mass flow meters.

Specification of Insertion Type Thermal Gas Mass Flow Meter

Measuring Medium	Various gases (excluding acetylene)
Pipe Diameter Range	DN25~2000mm
Flow Velocity Range	0.1~100Nm/s
Accuracy	Insertion type: 2.5%
Working Temperature	Sensor: normal temperature type -10 ~ +200℃, high temperature type: -10 ~ +350℃; Converter: -20 ~ +45℃
Working Pressure	Medium pressure ≤ 4MPa
Power Supply	Integrated type (DC24V or AC220V ≤ 18W); Split type (AC220V ≤ 19W)
Response Speed	1s
Output Signal	4-20mA (opto-isolated, maximum load 500Ω); RS-485 (opto-isolated), HART protocol
Pipe Material	Carbon steel, stainless steel, plastic, etc.
Display	Integrated type: four-line Chinese liquid crystal display
Display Content	Mass flow, standard volume flow, cumulative flow, standard time, cumulative operating time, medium temperature, standard flow velocity, etc.
Primary Meter Protection Class	IP65
Sensor Material	Stainless steel

Parameter of Insertion Type Thermal Mass Flow Meter

Performance:	Technical Parameters
Accuracy:	±1.5%
Repeatability:	±0.3%
Upper range:	100Nm/s
Lower range:	0.5Nm/s
Diameter range:	φ10-φ2000
Flow range:	0-770000Nm3/h (φ2000 air)
Pressure range:	< 2MPa / < 6.3MPa
Temp range:	-30-150℃、-30-250℃、-30-350℃
Medium:	Applicable dry gas except acetylene.
Sensor diameter:	φ18
Insert sensor probe rod outside diameter:	Φ20
Sensor material:	1Cr18Ni9T/ Hastelloy/ Ti/ 316L/ Alluminium/ SS304
probe rod material:	1Cr18Ni9Ti/SS304/316L
Transmitter material:	die-cast aluminum
Power Supply:	AC220V /AC110V /DC20-30V
Output:	4-20mA/Pulse/RS485
Display:	16 characters x 4 lines
Display type:	Split structure/Integrated structure/Insertable structure
Alarm:	2 relay (keep open)、3A/250VAC、3A/30VDC
Protection:	IP65
Cable outlet hole:	M20x1.5

Flow Range of Insertion Type Thermal Mass Flow Meter

Diameter	Range (Nm³/h)	Extended range (Nm³/h)
10	0.14~14	0.34~34
15	0.32~32	0.76~76
20	0.57~57	1.36~136
25	0.88~88	2.12~210
32	1.4~145	3.5~350
40	2.3~230	5.4~540
50	3.5~350	8.5~850
65	6~600	14.3~1430
80	9~900	22~2170
100	14~1400	34~3400
125	22~2200	53~5300
150	32~3200	76~7600
200	57~5700	136~13500
250	88~8800	210~21000
300	127~12700	305~30500
350	173~17300	415~41500
400	226~22600	543~54200
450	286~28600	690~69000
500	353~35300	848~84800
600	509~50900	1220~122000
700	692~69200	1660~166000
800	904~90400	2170~217000
900	1145~114400	2750~275000
1000	1413~141300	3400~340000
1500	3138~317900	7630~763000
2000	5650~565000	13565~1356500

How Does an Insertion Type Thermal Mass Flow Meter Work?

An insertion thermal mass flow meter measures gas flow using the thermal diffusion principle. The sensing probe contains temperature-sensitive elements that detect the amount of heat carried away by the flowing gas.

As gas velocity increases, more heat is transferred from the heated sensor. The meter converts this heat transfer into a mass flow value.

Because thermal mass technology measures mass flow directly, separate pressure and temperature compensation is generally not required in standard applications. This makes thermal mass measurement particularly useful for industrial gas consumption monitoring and energy management.

If you are comparing different measurement technologies for compressed air, see our guide to thermal mass vs vortex flow meters.

Insertion Type Thermal Mass Flow Meter

Applications of Insertion Type Thermal Mass Flow Meter

The correct flow meter should always be selected according to gas composition, flow range, temperature, pressure, and required accuracy.

Gas / Application	Typical Use
Compressed Air	Plant energy monitoring and leakage management
Nitrogen	Process gas consumption monitoring
Natural Gas	Industrial fuel gas measurement
Biogas	Energy and process monitoring
Industrial Gas	Production and distribution monitoring
Process Gas	Continuous flow measurement
Acetylene	Not recommended for this model

For special gases, high humidity, corrosive media, or unusual operating conditions, provide the complete gas composition to JUJEA before selecting the meter.

Insertion Type Thermal Mass Flow Meter

Production Process of Insertion-Type Thermal Gas Mass Flow Meter

Insertion-Type Thermal Gas Mass Flow Meter

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