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Walsn VS series Coriolis mass flowmeters are a new generation of products with twin V-shaped flow tubes. The VS series is equipped with a transmitter utilizing a digital signal processor (DSP), integrated with digital closed-loop vibration control (DLC), which performs real-time calculations and continuously monitors conditions of the flow sensor.
1、Overview:
The VS series Coriolis mass flowmeter is a new generation of products with twin V-shaped flow tubes from Walsn. The VS series is equipped with a transmitter utilizing a digital signal processor (DSP), integrated with digital closed-loop vibration control (DLC), which performs real-time calculations and continuously monitors conditions of the flow sensor. Featuring a higher working frequency, the VS series provides an optimal combination of performance and compactness. Online system configuration, diagnostics and data recording can be handled directly through a Hart communicator or Modbus.
The VS series flowmeter not only provides mass flow rate, but also simutaneouly measures density, temperature, volumetric flow rate, total flow and component fractions online and in real-time.
2、Features:
◆ Compact structure with a twin V-shaped tube design
◆ Self-draining
◆ Dedicated ASIC with digital closed-loop control (DLC) improves the performance of gas-liquid flow measurement
◆ Dynamic vibration balance (DVB) technology provides system stability
◆ Double-temperature compensation and high-pressure compensation improve measurement performance
3. Applicable Fluids
◆ Gases
◆ Slurries
◆ Liquids
4. Typical Applications
◆ Custody transfer
◆ Reactor feed ratio
◆ Density measurement
◆ Batch control
5. Environmental Conditions
◆ Power consumption: ≤ 20W
◆ Enclosure rating: IP65, IP67, IP68 (Remote Style Options only)
◆ Vibration limits:
a) a = 0.5g
b) Endurance sweep, under the condition of 20Hz ~ 400Hz frequency for 50 sweep cycles
◆ Impact limits: If the flow meter is well-packed, its performance will not be affected by the following impacts:
a) Acceleration: 50m/s²
b) Impact frequency: 60 times/min ~100 times/min
c) Impact: 1000 times
◆ Ex approval: Ex d ib IIC T6 Gb
◆ Electromagnetic/Electrostatic compatibility
a) Electrostatic discharge: level 3
b) Electrical fast transient/burst (EFTB) resistance: level 3
6、Specifications:
Basic Error | Liquid: ±0.10%; Gas: ±0.35%; Liquid density error: ±0.0005g/cm³ |
Diameter | DN5~DN80 mm (1/8 to 3 inch) |
Ex approval | PCEC |
Mechanical Connection | 316L/ Other materials required by users |
Pressure Rating | 10MPa (100 bar or 1450 psi) |
Material | Measuring tube: 316L |
Protection Level | IP65, IP67, IP68 (Remote Style Options only) |
Medium Temperature | -40℉—356℉ (-40℃—180℃) |
Ambient Temperature | -25℃—60℃ (-13℉—140℉) (with the LCD display); -40℃—85℃ (-40℉—185℉) (without the LCD display) |
Repeatability | Liquid: ≤0.05%; Gas: ≤0.17% |
Cable for Sensor | 10m (The remote style is optional.) |
Electrical Connection | M20*1.5 Seal, NPT1/2 |
Output signal | Analog + Pulse/Frequency; Analog+ Pulse/Frequency + HART; Analog+ Pulse/Frequency + RS485; Profibus PA/DP; FF; Specially customized |