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Thermal Gas Mass Flow Meter-SN50A

PREV: Metal tube float (rotor) flowmeter-SN60A

Product introduction

SN50A series thermal gas mass flowmeter is the use of the principle of heat conduction flow measurement instrument.The instrument uses the method of constant temperature difference to accurately measure the mass flow of gas.It has the advantages of small size, high degree of digitalization, convenient installation and accurate measurement.The sensor part consists of two benchmark platinum resistance temperature sensors.With a bridge loop, one sensor measures the flow temperature and the other maintains a thermostatic difference above the fluid temperature, allowing flow measurements under high temperature and pressure conditions. Real mass flowmeter, gas flow measurement without temperature and pressure compensation, measurement is convenient and accurate.The mass flow rate or standard volume flow rate of the gas can be obtained. Wide range ratio, can measure the gas flow rate up to 100Nm/s bottom to 0.5nm /s, can be used for gas leak detection.good seismic performance long service life.The sensor has no moving parts and pressure sensing parts and is not affected by vibration to the measurement accuracy. Easy to install and maintain.If site conditions permit, installation and maintenance without stopping production can be realized.(See Safety Precautions) Digital design.The whole digital circuit measurement, accurate measurement, easy maintenance. Adopt RS-485 communication, or HART communication, can realize factory automation, integration.

Technical Specification Measuring Range Insert Rangegauge Map Size Flange Size Drawing Selection Table

The connection
method

flange form DN25~ 150mm
screw-type DN25~50mm
plug-in DN125〜5000mm

Measuring the
dielectric

Single component or compartment-stable mixed dry gases (except B block gas and oxygen)

medium temperature

(1 ) -10°C- + 100°C (2) -10°C- +200C

The environment

一20°C~ +45°C

Pipe size

DN25~5000mm

The output signal

(1) 4-20mA (photoelectric isolation, maximum load of 500 Q), pulse, RS485 (photoelectric isolation), HART protocol

Alarm output

(1) 1-2 circuit relay normally open contact, (10A/220V/AC, 5A/30V/DC)

Power supply

（ 1 ）DC24V （ 2 ）AC220V （ 3 ）18 w w power consumption

Tube

(1) 304 stainless steel (2) 316 stainless steel

pressure rating

P2=1.6MPa (standard)DN125~5000mm insert type
P2=1.6MPa (standard)DN25~ 150mm flange type, DN25~ 50mm thread type
P3= 2.5Mpa (special)DN25 ~ 100mm flange type
P4= 4.0Mpa (special)DN25 ~ 100mm flange type

Header indicating

Standard volume instantaneous flow, cumulative flow, standard flow rate, current output value, etc

level of protection

IP65

measurement accuracy

±(1.5+0.5FS) %

Medium flow rate

General: 0.56~56Nm/s, the maximum flow rate can be extended to 100 Nm/s (range width can be negotiated for order)

note

Front N20DN and rear N10DN are required for straight pipe segments. For example, 90°C elbow or pipe expansion, please refer
to the instructions for details

Threaded DN15~25mm range gauge
DN	minimum discharge (Nm³/h)	maximum flow (Nm³/h)
15(G 72")	0.3	30
20(G 74")	0.5	50
25(G")	1	100

Flanged DN25~150mm range gauge
DN (mm)	minimum discharge (Nm³h)	maximum flow (Nm³h)
25	1	100
32	1.5	150
40	2	250
50	4	400
65	6.5	650
80	10	1000
100	15	1500
125	25	2500
150	35	3500

DN (mm)	minimum discharge (Nm³h)	maximum flow (Nm³h)	DN (mm)	minimum discharge (Nm³h)	maximum flow (Nm³h)
50	4	400	800	1000	100000
65	6.5	650	900	1300	130000
80	10	1000	1000	1600	160000
100	15	1500	1100	1950	195000
125	25	2500	1200	2280	228000
150	35	3500	1300	2680	268000
125	25	2500	1400	3100	310000
150	35	3500	1500	3560	356000
200	65	6500	1600	4050	405000
250	100	10000	1700	4560	456000
300	150	15000	1800	5150	515000
350	200	20000	1900	5750	575000
400	250	25000	2000	6350	635000
450	320	32000	2500	9500	950000
500	400	40000	3000	14000	1400000
550	480	48000	3500	19000	1900000
600	560	56000	4000	24000	2400000
650	680	68000	4500	30000	3000000
700	780	78000	5000	38000	3800000

nominal diameter DN	pressure rating MPa	contour length L	height of contour H	center	flange outer diameter	tap n-d	thread specification	Flange thickness B
25	1.6	305	320	85	115	4x 014	M12	16
32	1.6	310	324	100	140	4 x 018	M16	18
40	1.6	320	327	110	150	4 x 018	M16	18
50	1.6	396	332	125	165	4 x 018	M16	20
65	1.6	410	340	145	185	4x 018	M16	20
80	1.6	420	348	160	200	8x 018	M16	20
100	1.6	457	360	180	220	8x 018	M16	22
125	1.6	500	372	210	250	8 x(P18	M16	22
150	1.6	500	387	240	285	8x 022	M20	24

SN50A	A	DN	A	2	4	D	A	detailed
SN50A-								SN50A series themal gas mass flowmeter
	A							Thread-forming screw
	B							flange form
	C							plug-in
		DN						Size,e.g.DN25,Type 25(Refer to Range
			A					Normal temperature:-10..100 ℃
			B					High temperature style:0...200℃
				2				Two-way switching quantity (relay)
					4			4-20 ma output
					C			Pulse output
					R			RS485 communication
					H			HART protocol
						D		Power supply:24V DC
						A		Power supply:220V AC
							A	Pressure withstand:1.6MPa (standard)
							B	Pressure withstand:2.5MPa(special)
							C	Pressure withstand:4.0MPa(special)
*The selection table is only available for parameter selection,and the corresponding code is delivered.

Shanghai Kayuan Electronic
Technology Co., Ltd.

Shanghai Kayuan Electronic Technology Co.,Ltd is an enterprise specializing in the production and R & D of industrial sensors and controllers. Its main products include switches and sensors for flow, pressure, temperature, and liquid level.

In 2008, our assembly plant was established in Shanghai China,PAKU INTELLIGENT EQUIPMENT(SHANGHAI)CO.,LTD a subsidiary of Kayuan to produce the PAKU series of products. We adopt advanced technology and manufacturing processes across the board. With our professional design and production technology, comprehensive product lines, excellent quality, and sales network services, we can not only provide users with timely and professional technical support but also offer high - quality one - stop services.

The company has set up various departments such as the purchasing department, R & D department, quality management department, finance department, sales department, after - sales department, general office, laboratory, archive room, calibration workshop, production workshop, inspection area, storage area, shipping area, and tea break rooms, aiming to provide products of excellent quality and sincere services.

We adhere to the customer - centric concept of creating value for customers. According to the industry needs of customers, we continuously update technology and optimize services, aiming to become a leader in the field of process automation.

PAKU products are now widely used in different industries, including automation complete sets of equipment, petroleum equipment, chemical equipment, power equipment, welding equipment, steel equipment, metallurgical equipment, automobiles, and water treatment. We have served many customers at home and abroad, and our products are sold to countries such as Canada, the United States, Brazil, Indonesia, Vietnam, Thailand, and Russia.

In the increasingly competitive global market in the future, PAKU will, as always, serve a wide range of domestic and foreign customers with excellent quality, reasonable and competitive prices, on-time delivery, and perfect after-sales service. We welcome extensive cooperation with OEM and ODM customers.