Yokogawa DY Digital Yewflo Series Vortex Flow Meter

FEATURES
Interoperability
Reduction of instrumentation cost
The FOUNDATION Fieldbus specification ensures
interoperability and reduces the wiring cost, etc.
Independent flow and temperature calculations
(multi-variable type)
Each Fieldbus type digitalYEWFLO contains two AI
function blocks and two DI function blocks as standard.
The multi-variable type (MV) option offers temperature
output via one of these AI blocks (AI2). These function
blocks allow volumetric flow rates and temperature of
the process fluid to be measured, temperaturecompensated
mass flow rates to be calculated, and limit
switch signals for both the flow and temperature to be
generated. Besides, built-in steam tables enable mass
flow measurement of saturated as well as superheated
steams.
Advanced self-diagnostics
The digitalYEWFLO has advanced self-diagnostics
which can predict and identify anomalies in the process
conditions, such as high pipeline vibration and abnormal
flow. Also, the Fieldbus type digitalYEWFLO supports
various alarm functions, such as high/low-limit alarms
and alerts of block errors, based on the FOUNDATION
Fieldbus specification.
High-speed processing and stable control with less
power (≤ 11 mA)
The lower power requirement enables more devices to
be connected on each fieldbus segment. High-speed
processing and stable control are achieved by shortened
function block execution times.
(AI block ≤ 29 ms*, PID ≤ 44 ms*, DI ≤ 20 ms*)
* At the maximum load condition.
PID function block and link master functionality
(option)
A PID function block (with the I-PD control algorithm)
enables the field device to control the process.