Insertion Type Stainless Steel Gas Liquid Steam Gas Flow Meter Digital Steam Propane Biogas Vortex Compressor Air Flow Meter

Thermal Gas Mass Flow Meter Dimension

Thermal Gas Mass Flow Meter Installation Parameters

Nominal dia.	Flange outer dia.	Center hole	Bolt hole	Screw	Sealing surface		Flange thickness	Installation length
DN	D	k	n x L		d	f	C	L
15	95	65	4x14	M12	46	2	14	280
20	105	75	4x14	M12	56	2	16	280
25	115	85	4x14	M12	65	2	16	280
32	140	100	4x18	M16	76	2	18	350
40	150	110	4x18	M16	84	2	18	350
50	165	125	4x18	M16	99	2	20	350
65	185	145	4x18	M16	118	2	20	400
80	200	160	8x18	M16	132	2	20	400
100	220	180	8x18	M16	156	2	22	500

Ensure the accurate of measuring,stable performance,multi-flow unit switching,multi-function setting.

With DC4-20mA four-wire output,which is more convenient for remote reception. Support MODBUS RTU RS485 protocol,coordinating the receiving system to collect more data and modify system

Thermal gas mass flow meter is mainly used for measuring gas with low flow and the range ratio could reach 1:1000, which is better than gas flow meter on market and low flow could be measured.

Can be divided into five sections for correcting, this operation will make measuring more precision.

Thermal Gas Mass Flow Meter Parameter

Media	Various of Gas (Except acetylene)
Pipe Size	Insertion type:DN50-DN2000mm In-line type:DN10-DN2000mm Tri-clamp & Thread type:DN15-100mm
Velocity	0.1-100Nm/s
Accuracy	+/-1~2.5%
Working Temperature	Sensor:-40~+220 degC  Transmitter:-20~+45 degC
Working Pressure	Insertion type ≤1.6Mpa Flange type ≤4.0Mpa Special pressure please double check
Power Supply	Compact type: 24VDC or 220VAC, Power consumption ≤18W Remote type:220VAC,Power consumption ≤19W
Response Time	1s
Output	4-20mA(optoelectronic isolation,maximum load 500Ω),Pulse   RS485(optoelectronic isolation) and HART
Alarm Output	1-2 line Relay, 10A/220V/AC or 5A/30V/DC
Sensor Type	Standard Insertion, Hot-tapped Insertion and Flanged
Construction	Compact and Remote
Pipe Material	Carbon Steel, Stainless Steel,Plastic etc.
Display	4 lines LCD Mass flow, Volume flow in nominal condition, Flow totalizer, Date and time,   Working time and Velocity, etc.
Protection	IP65

Common Gas Upper Limit Flow

Nominal condition flow is the flow rate at temperature 20℃ and pressure 101.325Kpa.

Thermal Gas Flow Meter Selection Table
Model	QTMF	X	X	X	X	X	X	X
Caliber	DN15-DN4000
Structure	Compact	C
	Remote	R
Sensor type	Insertion		I
	Flange		F
	Clamp		C
	Thread		S
Material	SS304			304
	SS316			316
Pressure	1.6Mpa				1.6
	2.5Mpa				2.5
	4.0Mpa				4.0
Temperature	-40-200℃					T1
	-40-450℃					T2
Power Supply	AC85~250V						AC
	DC24~36V						DC
Signal Output	4-20mA+Pulse+RS485							RS
	4-20mA+Pulse+HART							HT

Adopt critical flow nozzle calibration device and submit the equipment for inspecting and calibrating regularly so that guarantee the accuracy more stable and reliable!

Thermal Mass Flow Meter Installation

Installation location and straight pipe requirements

1. When installing the thermal mass flow meter, keep away from elbows, obstacles, reducers and valves to ensure a stable flow field. It is required to have a long upper straight pipe. The front straight pipe length is greater than 10D, and the rear straight pipe length is greater than 5D.

2. When user site cannot meet the requirements of the straight pipe section, the gas rectifier could be connected in series to greatly reduce the requirements for the straight pipe section.