Omega Products FSCN-91 User Manual

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

Q = Flow rate in meters per second

D = Pipe internal diameter in meters

V = Fluid velocity in meters per second

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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

(Tri-Clamp®compatible),

or flange

⁄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

⁄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

⁄

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,

NPT conduit, cable 51 mm (2")

⁄

gland, and 2 m (6.5') cable

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.

NPT thread, aluminum die cast enclosure with

⁄

NPT thread

⁄

NPT thread

⁄

NPT conduit,

⁄

cable gland, and 2 m (6.5') cable

⁄

NPT conduit

⁄

NPT conduit, 75 mm

⁄

(0.625)

Dimensions: mm (in)

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