LIQUID FLOW TRANSMITTER AND SWITCH
FSW-9000 Series
$
745
Complete Transmitter
⻬ High Reliability—
No Moving Parts
⻬ 4 to 20 mA,
PNP/NPN (Transistor), or
Relay Output
⻬ Excellent Low
Flow Sensitivity
The FSW-9000 Series is a flow
switch monitor that measures the
velocity of the flow. It is ideal for
use in measurement and control
liquid applications. The FSW-9000
Series provides two output options:
a 4 to 20 mA analog output and a
PNP/NPN output. For the 4 to
20 mA output, the electronics’
module converts the signal from
the probe to a 4 to 20 mA analog
output, which can be used to
indicate flow rate. For the
PNP/NPN output, the measured
flow rate is compared to the
setpoint value selected by the user
and the switch changes state once
the setpoint value has been
achieved.
The FSW-9000 Series
microprocessor based electronics
and unique self-calibration program
gives the flow switch superior
temperature compensation, a fast
response time (adjustable from
3 to 10 seconds) and increased
long term switch point stability.
Even in the event of a power
failure, the calibration program will
store values for maximum and
minimum flows for up to 10 years.
A chain of 8 LEDs gives the user a
visual indication of the flow rate as
well as setpoint status, and one
di-chromatic LED indicates switch
point status. In addition, if there is a
problem with the unit, the 8 LEDs
will flash continuously providing
troubleshooting information.
The conical shape of the sensor’s
tip means that the probe can be
installed at almost any angle in the
pipe and that if the probe is
misaligned, accuracy will not be
affected. The sensing element and
connection of the FSW-9000 Series
are made with 316 SS and the
standard enclosure is glass-filled
nylon. The FSW-9000 Series can
be made with a great variety of
process connections such as
threaded, flange, or sanitary and is
also available in an aluminum
enclosure for hazardous
environments. Intrinsic safety
barriers required for explosion proof
areas.
Measuring Ranges for
FSW-9000 Series
The FSW-9000 Series nominal
measuring range is 0.04 to 2.0 m/s.
The switch can be set to trip at any
value in this range. To calculate the
velocity for your application, use the
following simple formula:
1.27 X Q
V=
Q = Flow rate in meters per second
D = Pipe internal diameter in meters
V = Fluid velocity in meters per second
D
B-83
2
Please note that the 4 to 20 mA
option is scaled over 0 to 2.0 m/s
The FSW-90-R is very similar to the
FSW-9212 Series with one main
difference: The sensor is separate
from the electronics and it does not
have an enclosed housing. This
gives the FSW-90-R Series the
ability to be installed in very small
pipes and be remotely controlled by
the FSCN-91 relay. The FSW-90-R
Series is the ideal solution when
there is not a lot of space to install
even a compact unit or when there
is a need for a mounted relay. In
addition, the conical shape of the
sensor’s tip allows the probe to be
installed at almost any angle in the
pipe, and if it is misaligned,
accuracy will not be affected. The
FSW-90-R is made with 316 SS.
FSCN-91 relay can operate with
DC or AC supply voltage and
provides an analog 4 to 20 mA
and SPDT output. The FSCN-91
enclosure is made with ABS and
can be mounted on a DIN rail or by
using 2 fixing screws.
FSW-9212, $745,
shown smaller
than actual size.
SPECIFICATIONS
Accuracy: ±5% of setpoint
Repeatability: ±1% of setpoint
Power Supply: FSW-90-R: 85 to
240 Vac, 50/60 Hz or 24 Vdc ±10%;
FSW-9000: 24 Vdc ±10%
Temperature Range:
Process: -20 to 80°C (-4 to176°F)
(Sanitary option to 284°F for CIP)
Operating: -20 to 60°C (-4 to140°F)
Max Pressure: 300 bar (4351 psi)
Protection Class: NEMA-4 (IP65)
Wetted Materials: 316 Stainless Steel
Enclosure Material: Glass filled nylon
standard; aluminum head optional
Process Connection:
Tri-Grip
TM
(Tri-Clamp®compatible),
or flange
1
⁄2 to 11⁄2 NPT,
Output: FSW-90-R + FSCN-90: relay
(SPDT) and 4 to 20 mA; FSW-9000:
transistor NPN/PNP (400 mA) and
4 to 20 mA
Switch Point Adjustment:
Potentiometer
Bargraph: 8 LED
Switch Point Status:
Red LED: No flow
Green LED: Flow
Response Time: 3 to 10 sec nominal
Max Start-Up Delay: 12 seconds
Switching Range: 0.04 m/s to
2 m/s (water)
Dimensions:
Nylon Head: 89 H x 64 mm D
(3.5 x 2.5")
Aluminum Head: 89 H x 108 mm D
(3.5 x 4.25")
Probe Diameter: 16 mm (0.625")
Insertion Length: 1
3
⁄8, 2 and 3"
standard; for other lengths consult
Flow Engineering
Weight: Approx. 680 g (1.5 lb)
AVAILABLE FOR FAST DELIVERY!
To Order (Specify Model Number)
Model No. Price Description Process Connection Enclosure Insertion Legth
3
1
⁄
4
⁄
2
NPT
NPT
FSW-9212 $745 Complete transmitter
Flow sensor
FSW-91-R 375
(FSCN-90 electronics None 51 mm (2")
sold separately)
FSCN-91 405 FSW-91-R electronics, 24 Vdc power
FSCN-92 415 FSW-91-R electronics, 85 to 240 Vac power
Glass filled nylon,
1
NPT conduit, cable 51 mm (2")
⁄
2
gland, and 2 m (6.5') cable
B
Accessories
Model No. Price Description
70A-1 $20 Continuous tone alarm
TX4-100 35 4 conductor wire, 30.5 m (100') spool
U24Y175 169 24 Vdc power supply
Recommended Reference Book:
Boiler Control Systems Engineering,
FW-346, $110. Visit omega.com/bobi
for Additional Books
Build to Order Models
Model No. Price Description
FSW-9(*)(**)(***) $715 Complete transmitter, specify connection (*), enclosure (**) and insertion length (***)
FSW-9(*)-R 375 Flow sensor, specify connection (*); (FSCN-90 electronics sold separately)
Options
Ordering Suffix Add’l Price Description
Process Connection (*)
1 N/C
2 N/C
3 N/C 1 NPT thread
5 $186 1.5" Tri-GripTM(inches only)
6 300 2" ANSI flange, 15016 316 SS
Enclosure (**)
1 $30 Glass filled nylon with
2 102 Aluminum die cast with
3 108 Aluminum die cast with cable gland
Insertion Length (***)
1 N/C 35 mm (1
2 N/C 50 mm (2")
3 N/C 75 mm (3")
Comes complete with operator’s manual.
To order ECTFE/ETFE element coating add suffix “-ETFE” to model number and $200 to price.
Ordering Examples: FSW-9212, Vac powered switch, and 70A-1, alarm, $745 + 20 = $765.
FSW-9123, transmitter with
(3") insertion length, $715 + 102 = $817.
1
NPT thread, aluminum die cast enclosure with
⁄
2
1
NPT thread
⁄
2
3
NPT thread
⁄
4
1
NPT conduit,
⁄
cable gland, and 2 m (6.5') cable
3
")
⁄
8
2
1
NPT conduit
⁄
2
1
NPT conduit, 75 mm
⁄
2
16
(0.625)
Dimensions:
mm (in)
L
B-84
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