Flowmetering
Vortex flowmeters
Local regulations may restrict the use of this product to below the conditions quoted.
In the interests of development and improvement of the product, we reserve the right to change the specification without notice.
© Copyright 2014
TI-P338-26
MI Issue 4
VLM10
In-line Vortex Mass Flowmeter
Description
The VLM10 in-line vortex flowmeter measures process fluid flow
by detecting the frequency at which vortices are shed from an
obstruction in the process fluid line (the bluff body). A piezo-electric
sensor mounted outside of the fluid flow acts as a transducer,
converting the pulses into electrical signals. An internal temperature
sensor along with the multi-variable electronics provide mass flow
rate of liquid, gas and steam applications. The VLM10 measures
all process variables with a single device providing outstanding
accuracy and reduces installation costs. Simplified commissioning
through an easy to use local display or internet accessible web
server.
VLM10 electronics provide excellent noise immunity, while a wide
range of wetted materials provide outstanding compatibility with
most process fluids. The transmitter provides a wide range of outputs
including Modbus RTU, BACnet MS / TP, Modbus TCP / IP, analog,
frequency and pulse outputs.
Features
Volumetric, energy, or mass flow monitoring of
liquid, gas or steam
Multi-variable electronics incorporate an integral RTD for
compensated mass flow measurement
Remote monitoring and programming via built in web server
Simple, rugged all welded construction, no internal gaskets,
no leak paths
In-process removable sensor below 52 bar g (750 psi g)
pressure
Modbus RTU, Modbus TCP/IP and
BACnet MS/TP compatible communications are available
50 000 event data logger, date stamped and user selectable
Performance specifications
Process variables
Volumetric flowrate
Mass flowrate
Energy flowrate
Temperature
Pressure
Density
Response Time 1 to 100 seconds
Available size range: DN25 to DN300 (1" to 12")
Reliable no moving parts design, no fluid to sensor contact
Field configurable via magnetic wand
High temperature operation up to 400°C (750°F)
Integral or remote configurable outputs, displays and ranges
Industry standard pulse, relay and 4-20 mA outputs
In-process RTD removable below 52 bar g (750 psi g) pressure
Repeatability
±0.1% of rate
±0.2% of rate
±0.2% of rate
±0.1°C (±0.2°F)
±0.05% of full-scale
±0.1% of rate
Liquids Gas and steam
±0.7% of rate ±1.0% of rate
±1.0% of rate ±1.5% of rate
±1.0% of rate ±1.5% of rate
±0.1°C (±0.2°F) ±0.1°C (±0.2°F)
±0.4% of full-scale ±0.4% of full-scale
±0.3% of rate ±0.5% of rate
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