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Thermal Dispersion Flow Switches
FSW-6000 and FSW-7000 Series
PLACE ORDER - Simple to Install and Low Cost
- No Moving Parts-Maintenance Free Reliability
- Optimal Temperature Compensation — Unaffected by Temperature Gradient
- Can Operate in Temperatures up to 120°C (248°F) with Sanitary Option
- Have a Maximum Working Pressure of 4,300 PSI (300 bar)
- Chain of 8 LEDs- Integrated Flow Rate/Setpoint Indication
- Can Be Used as a Level Switch
Description
Description
The FSW-6000/7000 Series arethermal flow switch monitorsdesigned to monitor flow status andalso used to detect level of liquids,air and gas. A chain of 8 LED’sgives the user a visual indication ofthe flow rate. In addition, there isalso a dichromatic LED, whichshows the switch point status of theunit. The sensing element andconnection of the FSW-6000/7000Series are made with 316 SS. The standard enclosure isglass-filled nylon and is alsoavailable in an aluminum enclosurefor hazardous environments. TheFSW-6000/7000 Series can bemade with a great variety ofprocess connections such asthreaded, flange, or sanitary.
The FSW-6000/7000 Series line ofthermal flow switch monitors isbased on the principle of thermaldispersion. A typical configurationuses two platinum ResistanceTemperature Detectors (RTD’s) setwithin the tip of the sensor. One RTDis heated a few degrees above thetemperature of the medium and theother RTD is used as a reference,sensing the actual processtemperature. The second RTD alsomonitors the temperature of themedium, as any changes intemperature must be compensatedfor in the first RTD. As the processmedium flows over the tip of thesensor it disperses some of theheat from the first RTD. Thetemperature change between thetwo RTD's signals the probe’selectronics and the switch changesstate once the set point hasreached.
The FSW-6000/7000 Series maybe installed in a pipe or tank usingthe thread or connection provided.Use only the hexagon whentightening to achieve a seal, do notuse the body. The body should berotated after tightening to leave thecable gland in suitable orientation.The FSW-6000/7000 Series is notaffected by its fixing position so itmay be installed at any anglearound the pipe. However, it isrecommended that with horizontalpipe runs the sensor should beinstalled on the side, into the middleof the pipe. In vertical pipes, theFSW-6000/7000 Series should beinstalled when there is flow in anupward direction against gravity.Care should be taken wheninstalling the sensor that the probeextends clear of the pipe’s internalwall and is fully immersed into theflow. In pipes with smallerdiameters, some care should alsobe taken so that the sensor is notscrewed too far into the line.
SPECIFICATIONS
Accuracy: ±10% of setpoint
Repeatability: ±1% of setpoint
Power Supply:
FSW-6000: 85 to 240 Vac (50/60 Hz)
FSW-7000: 24 Vdc ±10%
Temperature Range:
Process: -20 to 80°C (-4 to 176°F) [sanitary option to 120°C (248°F) for CIP]
Operating: -20 to 60°C (-4 to 140°F)
Max Pressure: 300 bar (4351 psi)
Protection Class: NEMA 4 (IP65)
Wetted Materials: 316 SS
Enclosure Material: Glass filled nylon standard or aluminum die cast option
Process Connection: ½ to 1½ NPT, Tri-Grip™, or flange (others available, consult Flow Engineering Department)
Output: 250 Vac SPDT 5 A relay
Switch Point Adjustment: Potentiometer
Bargraph:
Green LED: Flow rate above setpoint
Yellow LED: Flow is at above setpoint
Red LED: Flow is below setpoint
Switch Point Status:
Red LED: No flow
Green LED: Flow
Response Time: 1 to 10 seconds
Max Start up Delay: 12 seconds
Switching Range: 3 cm/s to 3 m/s (0.09 to 9.84 ft/sec) (liquid), 5 cm/sec to 15 m/sec (0.16 to 49 ft/sec) (gas)
Dimensions:
Nylon Head: 88 Dia x 80 mm H (3.5 x 2.5" H)
Aluminum Head: 88 Dia x 108 mm H (3.5 x 4.25")
Insertion Length: 13⁄8, 2 and 3" standard, for other lengths consult Flow Engineering
Maximum insertion Length is 36"
Weight: Approx 680 g (1.5 lb) Anemometer | Automation | Accelerometers | Calibrator | Cartridge Heaters | Chart Recorders | Cryogenics | Custom Pressure Transducers | Data Loggers | Data Acquisition | Dial Thermometers | Fiber Optics | Fiber Optic Temperature Measurement | Flexible Heaters | Flow Meters | Glass Bulb Thermometers | Grippers | Heaters | Humidity Measurement | Integrated Circuit Sensors | Immersion Heaters | Infrared Thermometers | Level Measurement | Load Cells | M12 Temperature Connectors | Magnetic Flow Meter | Panel Meter | PID Controllers | pH meter | Pressure Gauges | Pressure Transducers | Pressure Transmitters | Rotameters | RTD | Remote Process Monitoring | Sanitary Sensors | Signal Conditioners | Stepper Motors | Strain Gages | Strip Heaters | Temperature Controllers | Temperature Labels | Temperature Measurement | Temperature Sensor Manufacturing | Temperature Sensors | Temperature Transmitters | Thermal Imagers | Thermistors | Thermocouple | Thermocouple Wire | Thermowell | Ultrasonic Flow Meters | Vortex Flow Meter | Wireless Sensors
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