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Bulletin 840 Automatic Float Switches are heavy duty horsepower or control circuit rated devices which can be used to control and monitor liquid levels in a tank or sump. As the liquid level rises or falls in a sump or tank, at a preset level the switch can either start a motor to adjust the liquid level or activate a circuit to turn on a light or sound an alarm. Bulletin 840 Float Switches are designed for long life and heavy duty operation. They are offered in five different styles with many different float operator assemblies.
Bulletin 840 Automatic Float Switches:
Liquid Level Sensitivity From 2 to 5 Inches
0.6 to 3.8 lbs Switch Operating Force
2 or 3 Pole Contact Configurations
Tank to Sump Convertibility
NEMA A600 and NEMA N300 Contact Ratings
Type 1, Type 4, and Type 7 & 9 Enclosures
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The L1200 series float operated level switches are available in electric and pneumatic models. They are primarily designed for high level applications but models are available for low level.
Features:
- BUOYGLAS™ float operates to 0.5 specific gravity
- stainless steel models meet nace requirements and carry Canadian registration numbers
- Models rated for 2000 psi (13.8 MPa) [138 bar] vessels
- Models listed for Class I, Division 1 Locations
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Float type level switch
FB-5000 is a highly compact and durable float switch which is installed at a tank side through a nozzle. Made out of 316 SS, it has high corrosion resistance capability and is designed for high pressure ratings coupled with ease of handling. Float follows liquid level and actuates a Reed switch which could be used for actuating pump control, valve control, alarm message etc. for automatic and safe operation of process.
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Minimal dimensions
Length up to 1'200 mm
Removable without disassembling of reservoir cover
Various types available with 1 or 2 level
contacts and additional temperature switch
Temperature contact up to 90° C
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Elettrotec float level switches are designed to meet a complete range of application requirements. Available in brass and NBR float, stainless steel or PVC to detect the level of dissimilar liquids such as water, oil, solvents and acids.
According to the different models Elettrotec switches have to be mounted vertical from tank top.
Various mounting configurations are available and a variety of wire terminations, custom lead lengths, cable jackets and connectors can be supplied on request.
Elettrotec switches are shipped Normally Closed (N/C) as a standard but switches in N/O and SPDT mode can also be ordered.
In addition to single point detectors, Elettrotec also offers multipoint products, customer kit-assembly, switches in explosion-proof execution (EExd IIC T6) and specifically approved for marine applications (RINA, LLlyd's Register, Germanischer Lloyd)
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Float switches for monitoring the level of liquid media
SR 10
Characteristics:
simple to install
practical and inexpensive solution
maintenance-free
control elements: reed contacts
Electrical connection: Connecting box , coupler plug or cable
IP66 protection
Temperature range: -30°C to 150°C
standardized and customer-specific designs
Areas of application
IMB float switches are based on the float principle with small reed contacts for every level to be monitored. They are suitable for virtually all liquids and are mainly used for level controlling and monitoring:
plant engineering, machine construction, chemical industrie, biochemical industrie, petrochemical industrie, liquid natural gas, off-shore, power plants, ship-building, food industrie, pharmaceutics etc.
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- Standard items float technology
- Materials, Brass, ST. Steel, PVC, PPL, PVDF
- 1/8"-3/8" process connection
- Max pressure up to 50 bar (see data sheet)
- Max temperature 130°C (see data sheet)
- Constructions for 180°C on request
- Reed switch SPST or SPDT
- Cable wiring
- Protection class IP65
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These switches are used to monitor liquid levels by opening or closing when a desired action point is reached. A variety of types are available using mercury and non-mercury tilt switches and, also, permanent magnets and reed switches. Common applications include sumps, pump-control systems, bilge pumps, below ground vaults and irrigation systems
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Bernstein designs and manufactures a modular system of float switches which can be combined and configured to create a switch that ideally meets customer specifications.
Float switches provide a reliable and cost-effective acquisition of level information in containers with stagnant or flowing liquids, such as water, oils, alkaline solutions and similar substances.
A float switch comprises a connector element, a switching tube with 1 to 4 reed contacts and the float. The float is equipped with an integrated ring magnet and rises and falls with the level of the fluid. The magnetised contact reeds trigger a signal as soon as the float reaches the sensing range of the reed contact.
The range of Bernstein float switches ranges from miniature versions to heavy-duty and pressure-resistant versions.
The particular advantage of these float switches is, that the switching contact can directly – when furnished with the proper protection – switch loads, e. g. relays, signal lamps or even small pumps.
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LL SERIES REFRIGERANT FLOAT SWITCHES
This float controlled, magnetically actuated, mechanically operated, HERMETICALLY SEALED switch assembly can maintain close control of liquid level. The rugged construction makes it relatively insensitive to disturbances of the refrigeration system or vibration of the attached pipelines. The electrical switch, which is fused, and the operating mechanism are encapsulated within a transparent housing, which HERMETICALLY SEALS the moving parts and switch from ambient conditions and yet allows observation of the switching motion for determination of the liquid level. Type LLC, LLSC, LLAC are U.L. Listed for outdoor service. Types LLX, LLXS, or LLAX are not fused.
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level sensors
- potential-free
- robust and wearless
- high repeat accuracy
- selectable tube length up to 2m
- free selectable number and position of switch-points
- acid-proof versions available
- plug or cable connection
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Function possibilities
- Level switch functions
- Temperature switch functions
- PT-100 / PT-500 / PT-1000 combination
- Interface measurement
- Up to 250°C working temperature
- Up to 175 bar working pressure
- Sanitary applications
- With test switch function
- Flexible tubes available
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For liquids
Contact max. 4 reed switches
Connection G 1/8...G 2 male, flange: DN50..DN125
Material brass, st. st., PVC-U, PP, PTFE
Max. pressure 100 bar
Max.temperature 150°C
Liquid density from 0,5 g/ml on
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Liquid Level Switches
For over 30 years Orange Research has enjoyed the respect of industry as a supplier of high quality process control instruments. It started with our differential pressure gauges and switches, and soon moved to flow meters and flow switches. We now are pleased to offer this new line of low cost liquid level float switches.
Whether your needs are vertical or horizontal liquid level switches we have the solution. Choose from a wide variety of materials, from stainless steel to polypropylene. We offer many size and shape liquid level switches that meet the most common level measurements. We also offer special materials and designs to meet more uncommon requirements.
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Buy plastic float switches below $5.00!
Our FS01- is an economical choice for many general applications.
Polypropylene Float Switches offer an economical solution for general applications and are also good for many acids where chemical resistance is important.
Nylon Float Switches with Buna-N Float are ideal for petroleum oils and other fuel applications. This highly bouyant float switch is designed to be used in fluids with specific gravity of .5 or higher.
View the SMD "Application Notes" to check chemical compatability and specific gravity for your fluid.
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- Approval C.E.S.I. ATEX II 1G EEx-d IIC T6
- 1 to 6 switch points
- Lenght up to 6 mt.
- Materials: Brass, St. Steel, PVC, PPL, PVDF
- Max working pressure up to 50 bar
- Standard working temperature up to 105°C
- On request max temperature up to 180°C
- Protection class IP65
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SMD Fluid Controls is focused on providing customized float switches and liquid level sensors at the costs of others standard products.
Click "More info" below, select the desired part and "Configure" your own part and we will be sure to give you quick and personal response. It's That Easy !
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VEGAFLO SL1C is used with detection of level as liquids. An order of commutation on a predetermined level makes it possible to carry out the ordering of pumps of filling or of draining, to set off an alarm misses water, very high level, etc... There exist two versions with angle of overlap of 25° or 110°
VEGAFLO SP 1C is used with detection of high level as pulverulent or granulous solids. The typical applications are the order D `stop of filling of silos and other means of storage for pellets, flours, powders, etc... For the high level monitoring of products in explosive atmosphere dust (zone 20,21 or 22) such as e.g. of cereals, there exists the version e.g. Its special geometry flat-bottomed, allows D `to avoid any risk D `hiding even on products of weak density such as by ex: sunflower, oats, escourgeon. The angle of overlap is of +-20° compared to the vertical.
Advantages:
- Without maintenance
- Omnidirectional Operation
- Biconical Form avoiding the risks of clogging
- Compactness
- Ecological: without mercury and lead
- Approval ACS (option for liquids)
- Available with cable 5 or 10m
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LEVEL SWITCHES
The Level Switches Serial W is the top line for boilers automation, it has seven models, depending on maximum operational pressure and assembly charactiristics.
BW - 249: up to 17 atm
BW - 126: up to 12 atm
BW - 251: up to 18 atm
W - 126: up to 12 atm
W - 251: up to 18 atm
W - 291: up to 22 atm
W - 601: up to 42 atm
29 CC: up to 12 atm
31 CC: up to 12 atm
CHARACTERISTICS
The W Serial combines the floating operational principle, with the safety of the magnetic assembly.
Made in welded steel or steel melting(W-291, W-601) with A-53 Gr.B material,welded container with procedure and operartor certified by RFO (ASME IX)
With binded containers for a quick and easy access to floating, it is possible to chack, clean and maintain.
It´s use allows the automation of baoilers and tanks, since they are equipped with up to three ewitch mechanisms (depending on the model).
Adding a dissipating extension it allows to operate with a temperature up to 303°C (depending on the model).
All wet parts of the switch are made with stainless steel AISI 316.
USE
- Steam Boilers
- Water Boilers
- Digesters
- Tanks of Condensed
- Feed Tanks
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The livellostato one to magnetic drive MEC To
it is indicated for the control of the level of the liquids in the majority of the industrial applications.
Installed to the previewed point of threshold it carries out function ON/OFF for the putting in march of pumps, the activation of elettrovalvole, the remote signalling of the attainment of the level, concurring the complete putting in automatic rifle of the management of tanks, also in pressure.
It is settled directly on the flank of the tank
or externally, inserted in a connected room of control.
They can be used or more instruments in relation to the number of necessary points of participation.
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Livellostato magnetic model MEC S
it is indicated in the applications with presence of morchie, covering products, foam, since the fulcrum point does not turn out interested from the process liquid.
Installed to the previewed point of threshold, it carries out high function ON/OFF or low level and the remote signalling of the attainment of the level, concurring the complete putting in automatic rifle of the management of tanks or systems of control, also in pressure.
It is settled directly on the flank of the tank.
It can be supplied with device for the control in field of the operation (you see Mec T).
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