Explosion-Proof Ultra-Mag™ Level Switches Series GS/PS
For Powder & Bulk Solids
| Temperature Limits: | -40°F to +350°F |
|---|---|
| Rates Pressure: | 60 psig maximum |
| Pressure Connection: | ¼" NPT female |
| Wiring Connection: | ½" NPT female |
| Set Point Adjustment: | Field adjustable screws |
| Housing Material: | Aluminum |
| Calibration Spring: | 316 stainless steel |
| Weight: | 7 lbs. |
| Standard Sensitivity: | 5 - 100 lbs./cu. ft. |
A unique, patented Magnetic Linkage isolates the electrical compartment from controlled product, reducing maintenance and improving sensitivity. The sealed switch compartment and sealed leads yield the utmost in reliable operation. A wide selection of diaphragms and switches is available with choices of flange or suspension mounting to fit your specific application. The dry level Ultra-Mag™ is extremely sensitive and very economical. The magnetic linkage makes this simple explosion-proof diaphragm switch the most rugged and reliable level control for a variety of products (see below).
Mounting Selection : A choice of either suspension or flange mounting is available to match your application. Flange mounting is the best choice for control of low or intermediate level in vessels containing granular product that does not "bridge," "rathole," or otherwise build up on vessel walls. Choose suspension mounting for high level in vessels and for better operation with "bridging" product. See below for more information on suspension and flange mounting kits. Note that the mounting configuration is represented by the letter "S" for suspension or "F" for flange which is the second digit in the part number below.
Diaphragm Selection : A wide variety of diaphragms is available to match product bulk density, flowability, abrasiveness and temperature requirements while providing maximum sensitivity. The best choice for vessels subject to pressure or vacuum is "breathable" fabric (P Series), requiring no venting. Non-porous elastomer (G Series) type diaphragms are the best choice for more abrasive product and broader temperature range applications. Venting is always required with the G series and if used in pressurized vessels, venting to the tank atmosphere is required to allow pressure equalization. A slide rule "Diaphragm Selector" is available from the factory to help you choose the diaphragm best suited to your application.
"PS" Series Switches |
"GS" Series Switches |
Suspension Mounting is normally used for high level monitoring in vessels. For product over 20 lbs./cu. ft., the level switch (diaphragm face) should be located about 1/3 of the distance from the vessel wall to the point of entry of the product. For product less than 20 lbs./cu. ft., the unit should be located closer to the point of entry of the product - ½ the distance from the vessel wall to the point of entry. Pressure required to depress the diaphragm and trip the switch is in the range of 5 -15 oz. In the horizontal direction (perpendicular to the diaphragm). Suspension mounting provides the easiest vertical adjustment capability, greatest sensitivity and best maintenance conditions.
Suspension Assembly Kits: Pre-assembled kits are available from the factory, or you can build your own kits using standard pipe fittings shown in our Proximity Bill of Materials (Form No. 101). Pipes and fittings are normally galvanized steel, but aluminum and stainless steel pipes and fittings are available. Units pictured above are secured to a steel cover plate that rests on a rectangular steel flange welded into the top of the vessel. Aluminum and stainless coverplates and flanges are also available. Standard 48" long x 1" pipe provides working depth (WD) up to 48". Longer pipe (to provide greater WD) is available. GS Series switches have upper (L1 = 28" standard) and lower (L2 = 20" standard) 1" pipes, with a tee (for stilling pot) in between. A stilling pot is required to equalize pressure and keep dirt from building up behind the diaphragm. PS series require a ½" conduit in 1" suspension pipe for explosion proof applications. The ½" conduit (56" standard length) is a standard part of the GS series assembly
Dry product level switches shall be magnetic link diaphragm operated with (polyester)(nylon) fabric/ (urethane)(fiberglass)(Buna-N)(Viton) elastomer diaphragm. The electrical compartment shall be separated from the (bulk material)(powder) by a solid aluminum wall. The switch shall be activated by magnetic linkage through the solid aluminum wall. Housing shall be aluminum. Contacts shall be SPDT, rated 15 amps @ 125/250 AC. Housing shall be weather-proof, NEMA 3, 4X and ,as needed, explosion-proof, UL and CSA/CENELEC listed. Switch shall be Proximity controls Model No. _ _ P/G _ _ _ _.
| Product | Suggested Diaphragm* |
Product | Suggested Diaphragm* |
Product | Suggested Diaphragm* |
|---|---|---|---|---|---|
| Abrasive Aggregate Alumina Ash, Dry Baking Powder Baking Soda Barite Bark, Ground Barley Ground or Meal Barley, Whole Beans, Edible Bentonite Bond, Foundry Carbon Black Cement, Kinker Cement, Portland Chips, Hogged Fuel Coal Compost Core Sand, Foundry Corn, Shelled Diatomaceous Earth Drill Mud Flour Fly Ash Glass Batch |
3D 3D 3D 3D 7B 7B 3D 6G 17 4B 4B 3D 17 7A 8A 4B 6G 3D 5A 3D 8A 7A 3D 7B 3D 3D |
Gravel Iron Ore, Crusted Kaolin Clay Lime, Jydrated Lime, Stone oats Peanuts in Shell Peanuts, Shelled Perlite Phosphate, Rock Polyethylene Power Polyethylene Resin Polypropylene Fluff Polypropylene Powder Polypropylene Resin Polystyrene Beads Pot Ash Powdered Metal Powdered Ore PVC Powder PVC Resin Rice Rye Salt Sand, Dry Sand, Dry Silica |
3D 3D 3D 5A 3D 4B 7A 3D 7A 3D 7A 1 7A 7A 17 3D 3D 3D 3D 7A 17 17 3D 3D 3D 3D |
Sand, Foundry Prepared Sand, Shake Out Sawdust, Dry Sea Coal Sesame Seed Shale, Crushed Silca, Flour Sludge Sewage Dried Sludge, Sewage, Ground Soda Ash Soybeans, Cracked Soybean, Flake Soybean, Flour Soybean Meal Soybean, Whole Sugar Beets. Whole Sugar Refined Sunflower Seed Taconite Pellets Talcom Powder Walnut Shells, Crushed Wheat Wheat, Wet Wood, Chips Wood, Dust |
5A 3D 6G 3D 3D 3D 3D 1A 1A 3D 3D 7A 7A 3D 3D 6H 7B 7A 3D 3D 3D 8A 5A 6G 6G |
| * Diaphragm codes become 4th and 5th characters in model number. | |||||
| Prefix | |||||||
| E | X = Explosion Proof (UL & CSA) Class I, Div I & II, Groups C & D; Class II, Dive I & II, Groups E, F, & G X = Explosion Proof (CSA) Class II, Div I & II, Groups F & G |
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| 1st Digit - Series P = Breathable Diaphragm - No venting required. G = Elastomeric Diaphragm - Venting Required* |
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| 2nd Digit - Mounting S = Suspended (G series require suspension vent fittings)* Subtract 10lbs./cu. ft. - greater sensitivity F = Flanged, Aluminum standard T = Flanged, 304 Stainless Steel |
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| 3rd Digit - Housing Material D = Aluminum |
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| 4th & 5th Digits - Diaphragm Material (Termperature) (Bulk Density) | |||||||
| 3 4 5 7 1 1 1 6 6 7 8 |
D = Utethane, .031" thick (10 to 150°F) (>30 lbs./cu.ft.) B = Buna-N, .020" thick (-20 to 212°F) (>25 lbs./cu.ft.) A = Teflon/Glass on Sil Rubber, .024" thick (-40 to 350°F) <>15 lbs./cu.ft.) A = Sil Rubber on Galss (White), .015" thick (-40 to 350°F) (>15 lbs./cu.ft.) 6 = Polyester Filter Fabric (-30 to 275°F) (permeability 150 microns) (>30 lbs./cu.ft.) 7 = Polyester Nitex, (-30 to 275°F) (permeability 15 microns) (>20 lbs./cu.ft.) A = Viton (black), .025" thick, (+25 to 300°F) (>90 lbs./cu.ft.) G = Silicone Rubber w/Urethane overlay, (-40 to 350°F) (wood chips diaphragm) H = Silicone Rubber w/bumper, (-40 to 350°F) (>90 lbs./cu.ft.) B = Buna-N (Food Applications - white), .60" thick, (-2 to 212°F) (>30 lbs./cu.ft.) A = EPDM, .036" thick, (-40 to 275°F) (>40 lbs./cu.ft.) |
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| 6th Digit - Switch Type A = Standard, ambient to 180°F, SPDT, 15 amp @ 125, 250 VAC T = High Temp, to 350°F, SPDT, 5 amp @ 125, 250 VAC; 24 VDC (**) V = High vibration, SPDT, 15 amp @ 125, 250 VAC G = Gold contact, SPDT, 1 amp @ 125 VAC, &frac; amp @ 24 VDC |
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| E | X | G | S | D | 3 | D | A = Example Model Number*§ |
* GS - G series suspende contrls require suspension vent fittings.
(**) Non-UL/CSA listed, Non-CENELEC listed.
§ Popular models: GSD3SA, GFD3DA, PSD16A, PFD16A
| Part # | Tank OD | Part # | Tank OD |
|---|---|---|---|
| 126-099 126-010 126-011 126-012 126-013 126-014 126-015 |
15" 30" 36" 42" 48" 60" 72" |
126-016 126-017 126-018 126-019 126-020 126-021 |
84" 96" 10' 12' 14' 24' |
| "P" and "G" Series Suspension Assembly Kits | |
|---|---|
| Part # | Description |
| 901-409 | "P" Series Suspension Assembly includes ½" pipe (56" Standard length), 1" pipe (48" Standard length), 1" pipe coupling, 1 ½" PT strain relief on 1" pipe. Galvanized mile steel pipe, explosion proof, standard. |
| 901-412 | "G" Series Suspension Assembly includes ½" pipe (56" Standard length), watertight strain relief and 1" coupling, upper 1" pipe (28" Standard length), lower 1" pipe (20" Standard length), strain relief with 1 ½" Male Pipe Thread, 1" x 1" x 1" Tee, 1" Street Ell and 1" pipe-4" long Stilling Pot. Galvanized steel pipe, explosion proof, standard. |
| Specials include aluminum or stainless steel assemblies. Flange port and cover assemblies are sold separately. CONSULT FACTORY for details. |
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