Flange Type Digital Air and Steam Vortex Flowmeter

Specifications Flange Type Digital Air and Steam Vortex Flowmeter

1.Accuracy:Liquid Gas1% Steam1.5%

2.Temperature:-2

Technical Features: No moving parts, high reliability and durability Convenient installation and maintenance Sensor not contact the measured fluids directly, stable performance and long service life Output pulse signal is directly proportional to flow rate, high accuracy and no zero drift Wide measuring range, turndown ratio 10:1 Low pressure loss, low cost Frequency output not affected by the fluid change in physical character and composition, meter factor (K) only considers shape and dimension of eddies. Measurement of volumetric flow can get compensation once it needs. Then no re-calibration meter factor needed if damaged parts be exchanged Wide application for steam, gas, liquid Technical Specifications: Size: DN25 ~ DN300 Medium: Liquid / Saturaed steam, Superheated steam / Air / gas Accuracy: ±1.0% for liquid, ±1.5% for gas (including steam) / ±2.5% for inserted Repeatability: ±0.33% for liquid, ±0.5% for gas / ±0.83% for inserted Rated Pressure: 1.6MPa, 2.5MPa, 4.0MPa, 6.4MPa Signal Output: Current output 4 ~ 20mA / RS-485 / Hart / ModBus Power Supply: 24VDC / 3.6V Lithium Battery / Double Power Supply (24VDC, 3.6V Lithium Battery) Installation type: Wafer / Fixed Inserted / Adjustable Inserted / Adjustabel Inserted with ball valve Protection Grade: IP65 Explosion Proof: Exd IIB T4 / Ex ia IIC T4 Fluid temperature: -40 ~ +250oC (standard) / +100~ +350oC (high temperature) Specifications:

flowmeter gas										Instruction
Model
1	2	3	4	5	6	7	8	9	10
										Karman Vortex Street
DH-VF										Stress Type Testing
Measuring Ways				1						Flange connection(GB9119-2000)
				2						Clamp flange(equip with flange and bolts in factory)
Medium					1					Both for gas and liquid
					2					Liquid
					3					Gas
					4					Steam
Diameter						2				DN25
						4				DN40
						5				DN50
						8				DN80
						10				DN100
						15				DN150
						20				DN200
						25				DN250
						30				DN300
Operation Condition							Blank			Normal Type
							B			Intrinsic safety,iaIICT6
Signal Output								P		Voltage pulse, 24V power	Hand operator and digital control meter is optional
								S		Pulse,4~20mA, on-site,24V power	Optional Input ports:HART,temp.(PT100),pressure sensor,pressure transmitter
								D		On-site,without any display,lithium battery	Without any input ports
Structure									F	Separated Type
									Z	Integrated Type

  Table 2 Main techical performance of the vortex flow meter

Normial diameter	25/40/50/80/100/150/200/250/300	Output signal	Pulse ( 4-20)Ma
Material	1Cr18Ni9Ti	Enviroment Conditions	(-10~+50)°C
Normial pressure	lower than 2.5MPa	Power supply	+24V 220V
Media temperature	(-40~+250)(-40~ +350)°C	Signal transmission wire	RVVP3x0.5, RVVP2x0.5
Accuracy class	0.5,1.0,1.5	Transmission distance	1000m
Scope	1:10	Type of safety barrier	JHA-H2 JHA-B
Resistance loss coeffcient: Cd lower than 2.4

  Table 3 Flow scope(Liquid)

Caliber	Flow scope(m3/h)
25	1.6~13
40	3~30
50	5~40
80	13~130
100	20~200
150	45~450
200	80~800
250	125~1200
300	180~1800
The maximum flow speed of liquid should be lower than 7m/s, the standard liquid means the liquid at the temperature of t=20°C.P-0.1013MPa;ρ=998kg/m3.

  Table 4 Flow scope(Gas)

Caliber	Flow scope(m3/h)
25	9~60
40	20~160
50	45~300
80	80~600
100	120~1000
150	200~2000
200	400~4000
250	750~8000
300	1000~10000
The means the air under normal temperature and pressure, t=20°C.P-0.1013MPa;ρ=1.205kg/m3.