Thermal Mass Flow Meter

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General Introduction
The advanced technique of Silver Automation Instruments has been introduced to produce this flow meter measuring gas mass flow. Traditional flow meters need to adapt temperature and pressure compensation for measurement of fluid mass flow, whereas this China Thermal Mass Flow meter can directly measure fluid mass flow without requiring temperature and pressure compensation.
Its conspicuous features are as follows:
no movable components,
small pressure loss,
wide range ratio,
high accuracy,
high reliability,
simple installation, inline thermal mass flow meter or insertion type available.
convenient operation.
Thermal flow meter is extensively used in the industries such as petroleum, chemical industry, medical industry, heat power plant and environmental protection etc.

Typical Applications
Flow measurement of gas in industrial pipelines
Flow measurement of air , used as gas combustion flow meter,thermal mass flow meter high temperature air flow measurement.
Flow measurement of flue gas out of chimneys,
Flow measurement of waterfall gas during water treatment
Flow measurement of gas and compressed air，thermal mass flow meter for compressed air
Flow measurement and used as natural gas flow meter, coal gas flow meter, liquefied gas flow meter (LPG gas flow meter ),thermal mass flow meter for flare gas and hydrogen gas etc.
Flow measurement of trapped gas in steelworks

Technical Specifications from SILVER AUTOMATION INSTRUMENTS

Accuracy	±1% reading;±0.5% full range
Repeatability	±0.5% of full range
Turn down ratio	Normal 100:1; it is decided by calibrated flow range
Upper Limit of Range	80 Nm/s (air,20℃,101.33kPa)
Lower Limit of Range	0.05Nm/s (air,20℃,101.33kPa)
Size	Ø6~ Ø6000 thermal dispersion flow meter
Pressure Range	Negative Pressure, 0~1.0MPa,0~1.6MPa,0~2.0MPa,0~3.0MPa
Medium Temperature	-20~60℃，60~100℃，100~150℃，150~200℃，200~300℃
Medium	All kinds pure gas or mixed gas with fixed percentage, gas with dust, sand or moisture, corrosive gas
Sensor Diameter	Ø3(standard), Ø4
Sensor Material	316SST,Hastelloy,titanium
Probe Stem Diameter	Ø19(standard), Ø16, Ø12
Probe Stem Material	316SST,Hastelloy,
Power supply	24VDC/400mA or 220VAC/2W
Output	4-20mA DC, max load 1000Ω;RS485
Display	LED; four digits instantaneous flow, eight digits totalized flow
Correction	16 non-linearity correction
Type	Remote type: transmitter + flow totalizer Integral type: transmitter with integral totalizer
Connection type	In-line type and plug-in type
Alarm	1-2 relay output,3A/220VAC,3A/30VAC,settable
Protection level	IP65
Explosive proof	Ia IICT65,ExdII CT4
Lifetime	5 years

Model Selection

Item	Code	Description
Product Code	SRK-100	SRK-100 Series Thermal Mass Flow meter
Pipe size	DN	Ø6~ Ø6000
Construction	F	Remote Type
	I	Compact Type
Sensor *Structure 1**	PI	Insertion Type	W	Weld base
			B	Base + ball valve
	PL	In-line Type	F	Flange
			T	Thread
			C	Compression fitting
Probe Diameter	19	Ø19(standard)
	16	Ø16
	12	Ø12
Probe Material	6	316
	F	PTFE coated
	Y	Others
Explosive Proof	A0	NO
	A1	With Explosive Proof
Temperature	T0	-20~60 ℃
	T1	60-100℃
	T2	100-150℃
	T3	150-200℃
	T4	200-300℃
Pressure	P0	Negative Pressure
	P1	0-1.0Mpa
	P2	0-1.6Mpa
	P3	0-2.0Mpa
	P4	0-3.0Mpa
Power Supply	D	24VDC
	A	220VAC
	0	Other
Output	0	No output
	1	4-20mA
	2	RS485,Modbus
	3	Hart Protocol
Alarm	A0	No alarm
	A1	1 alarm relay output
	A2	1 alarm relay outputs
Display	N	No display
	E	LED

Note:

*1, For example: Code PIW---Insertion type flow meter with weld base.

Below is the video to show how thermal mass flow meter install

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