Water & Wastewater Asia September/October 2019

58 | TECH ROUND UP
EMERSON
introduces new 2-wire
Coriolis flow meter
Emerson has released the Micro Motion 4200
2-wire loop-powered Coriolis transmitter, a
new design that makes it possible to replace
existing 2-wire flow devices with minimal effort and
without incurring additional power or cabling costs.
The device can accommodate the largest line size
(4”) of any 2-wire flow meter on the market and is the
only such product to offer an onboard real-time clock
for improved diagnostics. The unit is available in a
remote-mount option for applications that require the
transmitter to be located separately from the sensor.
The 4200 transmitter provides a viable migration
path where Coriolis meters were previously
not practical as a 2-wire solution, either due
to restrictions on running additional
Emerson’s new Micro Motion 4200 2-wire
wiring or a lack of power sources. By
loop-powered Coriolis transmitter
using existing wires and eliminating the
need for AC panels and transformers,
the 4200 shortens engineering and
planning time and reduces installation
safety hazards. The unit is also an ideal solution for
greenfield applications where it’s necessary to minimise
wiring costs without compromising on measurement
performance.
The new meter provides highly
accurate and repeatable mass
flow and density measurements,
which enables users to optimise
production, improve safety by
preventing spill hazards due to overfilling, improve
cost allocation and product usage, improve
throughput and optimise reaction time. To
ensure reliability, the device comes standard
with Smart Meter Verification, the only 2-wire
Coriolis meter diagnostic tool on the market
that checks the structural integrity of the
tubes. The data historian, with up to 14 days
of storage and a real-time clock, facilitates
trouble-shooting by time-stamping process
data, audit trails and reports. A touch control
display provides a simplified user experience and
reduces commissioning time. The 4200 is also
SIL 2-capable with single use and SIL 3-capable
with multiple meters.
“Coriolis 2-wire flow meters offer an
accurate and repeatable flow and
density measurement that can maximise
plant efficiency and reduce waste,” said
Anthony Gentile, product marketing
manager at Emerson Automation
Solutions.
“By replacing unreliable legacy 2-wire flow
meters with Coriolis 2-wire,
the existing wiring can be
reused, lowering planning,
engineering and installation
costs.” WWA
The Micro Motion 4200 delivers accurate, reliable
measurement without the need
for additional wiring
Water & Wastewater Asia • September / October 2019