Verified Company
Hangzhou Darhor Technology Co., Limited
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high accuracy vortex flow instrument
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
Large temperature range from -200...+400 °C
Technical Specifications:
Size: DN15 ~ DN500
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~ +400oC (high temperature)
Specifications of Vortex flowmeter :
Table 2 Main techical performance of the flowmeter
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 3 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. More options for vortex flow meter , natural gas flow meter: | |