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Level switchs Liquid application

Product Instrument > Finetek
 

FA/FB Cable Float Level Switch
the working principle
FAC, FAP, FAR Type float switch make use of micro switch as contact component. The switch will have ON or OFF contact signal output when the angle is larger than 28 Degree
FAS Type float switch make use of mercury switch as contact component. When liquid lift up to contact float, the float will have variable angles.
The switch will have ON or OFF contact signal output when the angle is larger than 10 Degree.

 Features
• Rugged float IP68 enclosure rating
• Neoprenespecified cable, silicon cable selectable
• Construct simple, maintance free, installation easy




FC/FD Mini Float Level Switch
the working principle
When the magnetic field of permanent magnet inside the float is moved into to the proximity of the reed switch inside the stationary stem, the reed switch "snaps" the contact together and closes the electrical circuit. When the magnetic field is moved away from the reed switch, the reed switch does not touch. The circuit is open.

 Features
• Compact simple design and principle, high reliability, low price.
• Over 30 kinds of materials & specifications are optional.
• PP, PVDF, NYLON, POLYSULFONE materials are suitable for corrosive environment.
• SUS304 / 316; Max. operating temperature 200°C; Max. operating pressure 60kg/cm².
• Side-Mounting, Top-Mounting, Bottom-Mounting.
• Mounting screw type have M8 ~ M16, 1/8"~1/2"PF / PT / BSP and etc.
• The materials of lead wire and cable are PVC, XLPE and PTFE. ses the electrical circ
• Mini Float Level Switch has obtained UL approved.
• OEM / ODM and special specification are acceptable.
• Since technologies of the product have more and more advance, the products need comply with a requirement for more safe, convenient and low cost. The float switches are extremely compact, simple and are easy to install on any small space.
• These switches are not effected by electrical interference. They can withstand to chemicals, high temperatures and pressures if the correct material of float switch is selected by the customers.




FC/FD Magnetic Float Level Switch
the working principle
The single unit or multiple reed switch units arehoused tightly in stainless steel or engineeringplastic stem, and the permanent magnet issealed into the middle of the specified float ball(s). You can mount the float ball to penetrating through the stem, then the liquid buoyancy will deliver the float ball up and down at the specified position by graduating rings.
When the float internal magnet approaches the reed switch, it will actuate the reed switch contact point to create an open or close circuit. We can apply such on-off output signals to reach liquid level controlling and monitoring purpose.
The figures below show the float orientations on N.O. (Normal Open) and N.C. (Normal Close).

Features
• Multiple points measuring, multiple level points are available for custom-built.
• It is used the magnet to actuate the reed switch without any extra electric power source.
Each reed switch is durable for operation life reaching 2 million times.
• All output signal wiring are simplified in same junction box (housing) to economize the external wiring construction.
• FC(D) type magnetic float level switches are more economical in budget than other level switches by comparison in multiple points.
• The housing protection rating up to IP65.
• Rugged construction and multiple options for materials from engineering plastics as PVDF, PP, PVC, and stainless steels as SUS304, SUS316, float switches can be applied to versatile applications in chemical corrosion of acidity and alkalinity liquid, solvents or oil fuels.
• The reed switch and lead wire are isolated absolutely with liquids. All stainless steel switches are applicable to high pressure andhigh temperature performances.





FF Side Mounting Float Switch
the working principle
Simple theory as liquid buoyancy is utilized for the main principle of this "FF" series. A change of liquid level correspondingly travels the float to extreme levels up and down. The reed switch is thus "NC" and "NO" exchanged as well as the permanent magnet on pivot will have mutual repellence to the other one inside on the housing for like poles, which the Microswitch is button-pushed by magnet to states "NO" and "NC" exchanging likewise.
 
Features
• Both MicroSwitch type and Reed Switch are available.
The MicroSwitch type is usable even at ambient temp. of 100LC max.
• Mounting flanges are custom-specifiable. (JIS, DIN, ANSI).
• A rich variety of floats can be suited different specific gravity (S.G.) of liquid.(Custom-made)
• Liquid-wetted party material can be selected for SUS304 or SUS316 as well as enclosure explosion proof model.






SF Paddle Flow Switch
the working principle
Flow Switch utilizes the force of liquid flow to propel its paddle in order to detect the incoming flow or moving of the existing liquid in pipe. In condition of static liquid or no liquid, the spring is in expanding and press the magnet downward vertically. Reed switch contact is N.O.
As flow occurs and the paddle is thrusted and raised at an upward angle of 20°~30° (or more), the eccentric of paddle will push the magnet upward to actuate the reed switch which is thus in a close circuit. The length of paddle can be adjusted with the diameter of a pipe.
 
Features
• Wetted Part: SUS304, TEFLON.
• Operating Temp: -30°C~150°C.
• Contact Rating: 30W / 200 Vdc.
• Mounting Screw : 1" PT.
• Enclosure Protection: SF1800: IP-65. SF1710: EExd II C T6.
• Suitable Pipe: 1"~3".
• Operating Pressure: 355 PSI.
• Detection: Reversible.







SP Thermal Dispersion Flow Switch
the working principle
The Thermal Flow Switch Monitor is based on the principle of thermal dispersion. A typical configuration uses two Temperature Detectors set within the tip of the sensor. One Temperature Detector is heated a few degrees above the other one. As the process medium flows over the tip of the sensor it disperses some of the heat from the heated Temperature Detector. The delta temperature is a function of flow velocity and converted into electronic signal. The open collector changes state once the set point has been reached.
 
Features
• Detection of flow velocities in pipes
• LED functions Display
• Open collector alarm output
• Relay out/put
• Measuring Range:(Speed), water: 1~150 cm/s, oil: 3~300 cm/s
• Material SUS304, 316, PVDF, PP, available
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