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S SERIES Pressure Switches ASCO
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Enclosures, ASCO TRI POINT S Series switches are available in Class I locations are those in which flammable gases. three standard enclosures All of these enclosed units are or may be present in the air in sufficient quantities. are made in accordance with NEMA and UL standards to produce explosive or ignitable mixtures Class I loca. General Purpose Type 1 These enclosures are tions are classified by group letter which defines partic. designed for indoor use to protect personnel from ular atmospheres Division 1 locations are areas where. accidental contact with the equipment S Series the hazardous concentration exists continuously inter. general purpose switch units consist of a copper free mittently or periodically under normal operating condi. aluminum die cast body with a formed copper free tions Division 2 locations are those where the haz. aluminum cover two 3 4 conduit hubs with one plug ardous vapors are present only in case of accidental. are provided rupture or breakdown of equipment, Watertight Type 4 Watertight and dust tight enclo ASCO TRI POINT explosion proof enclosures with. sures are intended for use indoors and outdoors to letter B C or D in the fifth position are listed for Class I. protect the enclosed equipment against splashing or Groups B C and D Division 1 They are also suitable. falling water windblown dust and water hose directed for the less stringent Division 2 environment. water and severe external condensation S Series Class II locations are those which are hazardous. watertight switch units have a copper free aluminum because of the presence of combustible dust All. die cast body and a formed copper free aluminum ASCO TRI POINT explosion proof enclosures are. cover with Buna N gaskets two 3 4 conduit hubs listed for Groups E F and G locations. with one plug are provided, The switch body and cover are die cast copper free. Explosion Proof Types 7 and 9 Type 7 enclosures, aluminum with a Buna N gasket Two 3 4 conduit. are intended for use in locations defined by the National. hubs with one plug are provided, Electrical Code as Class I Type 9 enclosures are.
intended for Class II locations, Dimensions inches. S Series Pressure, With Types TD TV Transducers With Types TA TC Transducers. 1 4 NPT VENT CONNECTION ON ADDITIONAL SPACE REQUIRED. DOUBLE CHAMBER TRANSDUCERS FOR REMOVAL OF COVER, ADDITIONAL SPACE REQUIRED. 3 5 FOR REMOVAL OF COVER, 3 4 NPT FOR, CONDUIT CONN. 7 4 3 4 NPT FOR, CONDUIT CONN, 11 32 DIA FOR, 1 0 11 32 DIA FOR.
4 3 1 MOUNTING, 3 2 4 06 1 7, 1 4 OR 1 2 NPT, 1 ON TV SERIES ADD 7 16 TO THESE DIMENSIONS. Less than 0 6 copper, S SERIES Vacuum Differential Switches 4 123. Options Add appropriate suffix for desired option, How to Select and Order see pages 34 35. Select transducer unit below, ASCO S Series switches consist of two components the switch unit and the transducer unit Important Note The third digit of each of the catalog. numbers must be identical e g SA 3 0D and TA 3 4A11. How to Select, 1 Select the adjustable Select S Series pressure switch SA SB SC SD and SE unit below The vacuum transducer has a.
operating range based on spring which preloads the switch. desired actuation point SA Switch Unit SB SD or SE Switch Unit SC Switch Unit unit when no vacuum is applied. 2 Check that proof On application the vacuum acts, pressure is sufficient Single Stage Adjustable Deadband SB Switch Unit Single Stage Fixed Two Stage Fixed Deadband on a piston area to overcome the. 3 Read across and select the units allow independent adjustment of Deadband units have an adjustable set units consist of two separate snap action switches spring to operate the switch unit Vacuum Transducer. desired S Series switch unit the set and reset points over the full point and a non adjustable automatic each with an independently adjustable set point and. with the proper enclosure operating range of the switch The reset point non adjustable reset point The. 4 Continue across and select minimum difference SD Switch Unit Manual reset on decreas difference between the set and. a matching transducer unit between set and ing pressure units operate automatically reset points of each switch is the. compatible with the fluid reset points is the on increasing pressure and must be reset deadband listed below the. How to Order deadband listed manually on decreasing pressure minimum difference between the. Factory assembled Simply below the maximum To order change second digit to letter D set points of the two switches is The differential pressure transducer has two pressure. order the switch and transducer difference is the full e g S B 30D becomes S D 30D the separation sources acting on the piston area in. unit by catalog number joined range of the switch SE Switch Unit Manual reset on increas opposite directions The force. by a slash ing pressure units operate automatically on output is proportional to the. e g SA30D TA34A11 decreasing pressure and must be reset difference between these. Field assembled Simply manually on increasing pressure pressures allowing the. order the switch and transducer To order change second digit to letter E differential pressure to be. units separately by individual e g S B 30D becomes S E 30D contolled by adjustment. catalog number e g one of the switch unit Differential Pressure Transducer. SA30D and one TA34A11, General Purpose Explosion Proof. Specifications Adjustable Deadband Fixed Deadband or Manual Reset Two Stage Fixed Deadband Transducer Units. Separation Air or Water Air Corrosive, Adjustable Gas Oil or Gas Fluids. Fixed Fixed Maximum, Deadband General Explosion General Explosion General Explosion Aluminum Brass 303 SS. Deadband Deadband Full Scale, Adjustable At Purpose Watertight Proof Purpose Watertight Proof Purpose Watertight Proof Buna N Buna N Viton.
Operating Proof Mid Range At At Minimum At, Range Pressure In W C 1 Catalog Catalog Catalog Mid Range Catalog Catalog Catalog Mid Range Mid Range Catalog Catalog Catalog Catalog Catalog Catalog. In W C psig From To No No No In W C 1 No No No In W C 1 In W C 1 No No No No No No. 0 30 Hg 50 2 28 Hg SA30D SA31D SA32D 1 2 Hg SB30D SB31D SB32D 1 7 Hg 3 Hg SC30D SC31D SC32D TV34A11 TV34A21 TV34A32. 15 PSI 30 Hg 50 3 57 Hg SA20D SA21D SA22D 1 7 Hg SB20D SB21D SB22D 2 0 Hg 8 Hg SC20D SC21D SC22D TV24A11 TV24A21 TV24A32. 0 27 15 2 27 SA30D SA31D SA32D 1 2 SB30D SB31D SB32D 1 7 2 7 SC30D SC31D SC32D TA31A11. 0 65 15 3 65 SA20D SA21D SA22D 1 4 SB20D SB21D SB22D 2 0 6 5 SC20D SC21D SC22D TA21A11. 15 140 25 6 125 SA20D SA21D SA22D 3 0 SB20D SB21D SB22D 4 0 14 0 SC20D SC21D SC22D TB21A11. 15 250 25 10 235 SA10D SA11D SA12D 6 0 SB10D SB11D SB12D 7 0 25 0 SC10D SC11D SC12D TB11A11. 25 400 25 15 375 SA10D SA11D SA12D 8 0 SB10D SB11D SB12D 13 0 40 0 SC10D SC11D SC12D TC11A11. Differential, 0 12 15 2 12 SA40D SA41D SA42D 1 0 SB40D SB41D SB42D 1 4 2 4 SC40D SC41D SC42D TA41A11. 0 27 15 2 27 SA30D SA31D SA32D 1 2 SB30D SB31D SB32D 1 7 2 7 SC30D SC31D SC32D TA31A11. 0 65 15 3 65 SA20D SA21D SA22D 1 4 SB20D SB21D SB22D 2 0 6 5 SC20D SC21D SC22D TA21A11. 15 140 25 6 125 SA20D SA21D SA22D 3 0 SB20D SB21D SB22D 4 0 14 0 SC20D SC21D SC22D TB21A11. 15 250 25 10 235 SA10D SA11D SA12D 6 0 SB10D SB11D SB12D 7 0 25 0 SC10D SC11D SC12D TB11A11. 25 400 25 15 375 SA10D SA11D SA12D 8 0 SB10D SB11D SB12D 13 0 40 0 SC10D SC11D SC12D TC11A11. All switch units above are in stock for immediate delivery All switch units and transducer units above are in stock for immediate delivery. 1 Values shown are nominal, OPTIONS Pressure Temperature Switches. H Series P Series and S Series P Series, Snap Action Switch Options Switch Options. Optional snap action switches to meet specific electrical loads Panel Mount Open frame P Series compact switch units are. or application conditions are available on most ASCO TRI POINT available for panel mounting with the switch unit inside and the. switch units Generally the construction of a switch unit with transducer outside The panel separates the fluid sensing portion. optional snap action switches contains other specific parts and from the electromechanical portion Five holes for bolts and. may be ordered only as a factory built unit To specify a particular operating stem must be drilled or punched through the panel. optional construction add the appropriate suffix to the switch unit Three constructions are available add the suffix listed below to. catalog number e g SA10D with optional gold contact snap the switch unit catalog number for the desired thickness. action switch suffix P would become SA10D P, Catalog Deadband Variation Panel Thickness Suffix.
Description Electrical Rating Suffix From Listing, 10 Ga 135 005 10. 5 Amp 125 250 VAC 14 Ga 075 005 11, DC Rating 1 4 HP 125 VAC SA 50 16 Ga 060 005 12. 1 Amp 1 2 HP 250 VAC G SB SC PA 100, Double Break 1 Amp 125 VDC H 200. 1 2 Amp 250 VDC PB 400, DC Rating 10 Amp 125 VAC VDC M SB SC PA 100. 10 Amps SPDT 1 8 HP 125 VAC VDC H 120, Double pole 5 Amp 125 250 VAC.
Double throw 1 8 HP 125 VAC S Series, Two SPDT 1 4 HP 250 VAC K SA SB SD SE PB 50 Switch Options. Switches with 1 2 Amp 125 VDC Industrial Adjusting Nut Covers. Common Lever 1 4 Amp 250 VDC Available in clear plastic or metal to. Gold Contact 1 Amp 28 VAC SA SB SC PA 25 prevent tampering with set point. Dry Circuit SPDT 1 Amp 28 VDC P H 50 adjusting nuts. 25 Amp Res 28 VDC PB PC 100 Clear plastic cover To order add. Hermetically 10 Amp Ind 28 VDC SA PA 100 suffix 1 to the switch unit catalog. Sealed 5 Amp Motor 28 VDC H H 200 number or order separately as SP01. SPDT 3 Amp Lamp 28 VDC PB 600 Metal cover To order add suffix 2 to. the switch unit catalog number or, 1 Amp 125 VAC, order separately as SP02. 5 Amp 125 250 VAC JIC Construction A switch unit, High Ambient 1 8 HP 125 VAC having the electrical and adjusting nut. 250 F 1 4 HP 250 VAC F SA SB SC 25 covers attached to the switch body by. SPDT 1 2 Amp 125 VDC a chain Also designed to Type 13. 1 4 Amp 250 VDC specifications To order add suffix 3. 20 Amp 125 250 VAC to the switch unit catalog number or. High Power 1 HP 125 VAC SA 50 order separately as SP03. 1 HP 2 HP 250 VAC W SB SC 100 Terminal Block Applicable to switch. SPDT 1 2 Amp 125 VDC PB 400 units with one single poledouble throw. switch The terminal strip is prewired, 1 4 Amp 250 VDC. to the snap action switch To order add, Moisture 5 Amp 125 250 VAC.
suffix 4 to the switch unit catalog, Resistant 1 8 HP 125 VAC SA None number or order separately as SP04. Sealed Switch 1 4 HP 250 VAC J SB SC PA 25 Factory Sealed Explosion proof. SPDT 1 2 Amp 125 VDC PB H 50 units may be ordered with a factory. 1 4 Amp 250 VDC seal separating the electrical chamber. Tight 5 Amp 125 250 VAC from the conduit hubs and 24 long. Fixed 1 8 HP 125 VAC 14 AWG 105 C rated lead wires To. Deadband 1 4 HP 250 VAC T SB SC 50 order change the fourth digit of the. SPDT 1 2 Amp 125 VDC switch unit catalog number from 2 to. 3 e g SA1 2 D becomes SA1 3 D, Pressure Transducer Options. Special Wetted Materials The following diaphragms may Pressure Snubbers A pressure snubber 1 4 NPTF by. be substituted on transducer body materials of aluminum 1 4 NPTM installed in the transducer pressure connection. brass polyester and stainless steel To order substitute the will dampen the pressure spikes to a value which will not. material code below in the seventh digit of the transducer cause damage It consists of a body with a porous metal disc. catalog number e g a TF10A1 1 with optional viton diaphragm of stainless steel through which the fluid passes To order. becomes a TF10A1 2 select a snubber compatible with the fluid Available by. seperate catalog number only see table below, Diaphragm Code Temperature Range Brass 303 SS. Fluid Catalog No Catalog No, Buna N 1 4 F 20 C to 180 F 82 C. Ethylene Propylene 6 4 F 20 C to 250 F 121 C Air Non Hazardous Gases TP04G2 TP04G3. Neoprene 3 4 F 20 C to 180 F 82 C Water Light Oil under 225 SSU TP04E2 TP04E3. Fluorosilicone 7 40 F 40 C to 250 F 121 C Oil Heavy over 225 SSU TP04D2 TP04D3. Viton 2 4 F 20 C to 250 F 121 C Pressure Rating psig 2000 5000. Oxygen Cleaning Pressure transducers for oxygen service Process Connection A female process connection 1 4. should be specially cleaned They are degreased and blacklight NPT is standard on all pressure transducers A 1 2 NPT is. inspected then assembled in a clean area and tested with available as an option on gauge pressure transducers To. oil free air or nitrogen Use metal body transducer with viton or order add suffix B to transducer catalog number e g. neoprene diaphragm and add suffix H to transducer catalog RF10A21 becomes RF10A21 B. number e g TA40A13 becomes TA40A13 H Note Not available on nylon transducers. P Series and S Series Temperature Transducer Options. Armored Capillaries Double braided copper armor is Longer Capillaries Standard copper and stainless steel. standard for copper capillary units Stainless steel spiral capillary units can be furnished in 12 lengths To order add. interlocked armor is available for stainless steel capillary suffix D to transducer catalog number. units Add suffix C to transducer catalog number Consult ASCO for longer length capillaries. Capillary Bulb U Dimension, Thermal Well Length Transducer Length Required.
Feet Suffix Inches Inches, 6 3 1 2 2 1 2, Thermal Well 1 Use with direct or remote sensors for. 12 D 5 1 2 4 1 2, protecting sensing bulb This allows removal of bulb while. ASCO S Series pressure switches consist of a switch unit and a transducer unit They can be ordered separately for customer stocking and or field assembly or as a complete factory assembled unit Switch S Series pressure switch units incorporate the unique ASCO TRI POINT alternating fulcrum balance plate to control the operation of one or more electrical snap action swtiches The electrical snap

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