Omega Products FV-211 User Manual
®
ALL PLASTIC VorTex FLowMeTer
For CorroSIVe LIquIdS
FV-200 Series
Standard
U No Moving Parts
U Corrosion Resistant
U 6 to 51 mm (
U High Temperature
[95°C (203°F)]
Models Available
U NIST Certificate
The FV-200 Series meter utilizes
vortex-shedding technology to
provide a repeatable flow
measurement accurate to 1% of
full scale. The meter has no
moving parts, and any potential for
fluid contamination is eliminated
by the meter’s corrosion-resistant
all plastic construction. The meter
includes a compact 2-wire (4 to
20 mA) or 3-wire pulse transmitter
(optional), contained within a
conveniently replaceable plug-in
electronics module. All electronics
are housed in a corrosion-resistant
enclosure. Unlike meters containing
metal or moving parts, the FV-200
is perfect for aggressive or easily
contaminated fluids. Applications
range from ultra-pure water to highly
corrosive chemicals and slurries
Operation of the FV-200 vortex
flowmeter is based on the vortex
shedding principle. As fluid moves
around a body, vortices (eddies) are
formed and move downstream.
They form alternately, from one
side to the other, causing pressure
fluctuations. These are sensed by
a piezoelectric crystal in the sensor
tube, and are converted to a 4 to
20 mA, or pulse signal. The
frequency of the vortices is directly
proportional to the flow rate. This
results in extremely accurate and
repeatable measurements using no
moving parts.
Another advantage of utilizing a
FV-200 vortex flowmeter is that there
are no gaskets or elastomers in the
meter. Therefore, one need only be
concerned with the thermoplastic
material used in body construction.
1
⁄4 to 2") Sizes
In a thermoplastic piping system,
the material chosen for the flowmeter
should match that of the pipe
wherever possible.
Many factors may affect the
capability of a meter to measure
the flow of specific fluids accurately.
Different solutions have varying effects on meters. For instance, heavy
particle suspension will wear down
internal parts on some meters or
cause sensing inaccuracies for
non-obtrusive metering systems.
For vortex flowmeters, high
viscosities tend to dampen the
formation of vortices and reduce the
effective range. Particles and internal
bubbles do not usually affect
vortex meters. Slurries containing grit
can wear down the bluff body over a
period of time. Also, long fibers can
catch and build up on the bluff,
decreasing accuracy. Standard
factory calibration is for tap water at
32 SSU (1 CST) viscosity and
ambient temperature. Viscosity
above 1 CST will raise the minimum
readable flow rate, reducing
FV-211, shown smaller
than actual size.
rangeability. The effect is linear to
viscosity. No adjustments are
required for specific gravities up
to 2.0. Liquids with high specific
gravities will adversely affect the
permissible amount and duration
of over range flow.
SPECIFICATIONS
Measured: Liquids
Connection:
Wetted Material: PVC, CPVC or PVDF
depending on model number
Turndown Ratio: 12.1
(except
Accuracy: ±1% of full scale,
4 to 20 mA or ±2% of full scale,
frequency pulse (“-P” option)
Repeatability: ±0.25% actual flow
Output Signal: 4 to 20 mA or
frequency pulse (source-sink driver;
1A source/ 1.5A sink; typical output
resistance 10 Ω)
Power Supply: 13 to 30 Vdc
Enclosure: NEMA 4X (IP 66)
Response Time: 2 seconds minimum,
step change in flow
1
⁄4 to 2 NPT thread
1
⁄4" meter size; 8.1)
G-5
PORD ERUSSERP )rabilliM(
Pressure—Temperature Ratings
Maximum Maximum
Fluid Operating Pressure
PORD ERUSSERP )disp(
PORD ERUSSERP )rabilliM(
DPi32, shown smaller
than actual size. visit
omega.com/dpi_series
for more information.
Temperature bar (PSIG)
°C (°F) PVC CPVC
95 (203)* NR 1.6 (24)
66 (150) NR 4.3 (63)
38 (100) 6.4 (93) 8.3 (120)
21 (70) 10.3 (150) 10.3 (150)
*(-HT) models only
½ NPT female
conduit connection
A
NPT
B
C
Dimensions: mm (inch)
Size, NPT A B C D
¹⁄₄ 97 (3.81) 45 (1.75) 133 (5.25) 64 (2.50)
¹⁄₂ 97 (3.81) 45 (1.75) 181 (7.13) 64 (2.50)
³⁄₄ 97 (3.81) 45 (1.75) 194 (7.63) 64 (2.50)
1 100 (3.92) 45 (1.75) 204 (8.03) 64 (2.50)
1¹⁄₂ 99 (3.90) 51 (2.00) 213 (8.37) 64 (2.50)
2 109 (4.31) 51 (2.00) 213 (8.37) 64 (2.50)
To Order Visit omega.com/fv-200_series for Pricing and Details
Connection, Minimum Flow Maximum Flow
Model No. NPT Size Construction LPM (GPM) LPM (GPM)
FV-211 ¹⁄₄ PVC 2.3 (0.6) 18.9 (5)
FV-212 ¹⁄₂ PVC 4.7 (1.3) 56.8 (15)
FV-213 ³⁄₄ PVC 7.9 (2.1) 94.6 (25)
FV-214 1 PVC 15.8 (4.2) 189.3 (50)
FV-215 1¹⁄₂ PVC 31.5 (8.3) 378.5 (100)
FV-216 2 PVC 63.1 (16.7) 757.1 (200)
FV-221 ¹⁄₄ CPVC* 2.3 (0.6) 18.9 (5)
FV-222 ¹⁄₂ CPVC* 4.7 (1.3) 56.8 (15)
FV-223 ³⁄₄ CPVC* 7.9 (2.1) 94.6 (25)
FV-224 1 CPVC* 15.8 (4.2) 189.3 (50)
FV-225 1¹⁄₂ CPVC* 31.5 (8.3) 378.5 (100)
FV-226 2 CPVC* 63.1 (16.7) 757.1 (200)
FV-231 ¹⁄₄ PVDF* 2.3 (0.6) 18.9 (5)
FV-232 ¹⁄₂ PVDF* 4.7 (1.3) 56.8 (15)
FV-233 ³⁄₄ PVDF* 7.9 (2.1) 94.6 (25)
FV-234 1 PVDF* 15.8 (4.2) 189.3 (50)
FV-235 1¹⁄₂ PVDF* 31.5 (8.3) 378.5 (100)
FV-236 2 PVDF* 63.1 (16.7) 757.1 (200)
Accessory
Model No. Description
PSU-93 Unregulated 24 Vdc power supply
Comes complete with 5 point NIST certificate and operator’s manual.
For units with a pulse output add a “-P” to the model number, no additional charge.
* For high temperature CPVC or PVDF add suffix “-HT” to model number, for additional cost
Ordering Examples: FV-213,
FV-226-P, 2 NPT, CPVC vortex with pulse output.
FV-231-P-HT,
1
⁄4 NPT, PVC vortex with pulse output and high temperature option.
3
⁄4 NPT, PVC vortex flowmeter and DPi32, 1⁄32 DIN digital display.
G-6
D
G
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