See other catalogues for
OMEGA
You may also be interested in
Text version of the page
Mass and Volumetric
Flow Meters
Displays Flow,Temp, Pressure in Mass Flow
Unit
Full Scale Ranges from 0.5 CCM to 1000 LPM
Dynamic Display with 13 Gas Select: Air, A,
CH4, CO, CO2, Ethane, H2, He, N2, N2O, Neon,
O2, Propane
RS-232 Communication
Response Time of 10milliseconds Typical
Low Pressure Drop of 25mbar
or Better for 100 LPM or Less
Turndown Ratio of 100:1
Typical Position Insensitive
Push Button Tare
Repeatability ±0.5%
300 Series Stainless Steel Standard
on all Single Channel, Flowmeters
50(S) LPM and Under
differential pressure across it. The
restriction is designed so that the
gas molecules are forced to move
in parallel paths along the entire
length of the passage; hence
Laminar (streamline) flow is
established for the entire range of
operation of the device. Because
of the LFE’s in the flow body,
straight runs of pipe upstream and
downstream are generally not
The FMA-1600 and FVL-1600 Series
flowmeters use two of the best-studied
physical properties of gases to
measure flow: Pressure and viscosity.
Differential pressure measurement,
across a laminar region, to achieve a
turndown of 100:1 typical. Gas units
are available with very wide range of
measurement, starting at 500 microlitres
per minute full scale to 1000
litres per minute full scale. Unique
laminar flow elements, no moving
parts and modern electronics provide
an instrument that is rugged,
affordable and accurate.
The FMA-1600 series “NONTHERMAL”
Mass FLowmeters use
discrete differential pressure, absolute
pressure, and temperature sensor
measurements within the laminar flow
region. The embedded microprocessor
provides a software-based STP
calculation for the user, compensated
for pressure and temperature to
standard conditions(1 atmosphere 25°
C). The FMA1600 series addresses
the limitations of thermal mass flow
technologies, as there is no “Hot wire”
drift. The unit has an adjustable
response time starting from 10 ms.
The FVL-1600 series volumetric gas
flowmeters are ideal for applications
venting to atmosphere or with little to
no back- pressure. These units use
discrete differential Pressure sensor
measurements within the laminar flow
region with an embedded
microprocessor to provide flow
measurements with an adjustable
response time starting from 10 ms.
The FMA-1600 and FVL-1600 series
gas flow meters are based on the
accurate measurement of volumetric
flow. The volumetric flow rate is
determined by creating a pressure
drop across a unique internal
restriction, known as a Laminar Flow
Element (LFE), and measuring
required. Unlike other flow
measuring devices, in laminar flow
meters the relationship between
pressure drop and flow is linear.
The underlying principle of
operation of the flow meters is
known as the Poiseuille Equation:
Q = (P1-P2)ðr4/8hL (Equation 1)
Where:
Q = Volumetric Flow Rate
P1 = Static pressure at the inlet
FVL-1600
FMA-1600
£459
Basic Unit
FMA-1611 shown
larger than actual size
P-4
P
sales@omega.co.uk +44 (0)161 777 6622
