SEE MORE AT SORInc.com Request Quote Adjustable Dead Band Pressure Switches The adjustable dead band pressure switch should be used when there is a requirement for an adjustable and wide dead band between the increasing and decreasing set points. Function Alarm: Hi — Lo Control: On — Off V1 Weathertight Housing Features and Benefits V3 Weathertight Explosion Proof Hermetically Sealed Switches Design and specifications are subject to change without notice. For latest revision, see www.sorinc.com. • 3-year warranty from date of manufacture • Safety Certified to IEC 61508 (SIL) SOR products are certified to IEC 61508 for non-redundant use in SIL1 and SIL2 Safety Instrumented Systems for most models. For more details or values applicable to a specific product, see the Safety Integrity Level Quick Guide (Form 1528). • Wide adjustable dead band • Independent adjustments for increasing and decreasing Set Points • Field adjustable with fine resolution of Set Points • Instrument quality — high repeatability • High overrange and proof pressures • Exceptionally long life • Not critical to vibration • Wide selection of wetted parts materials for process compatibility and containment Form 281 (12.15) ©SOR Inc. SORInc.com | 913-888-2630 | Registered Quality System to ISO 9001 1/16 Adjustable Dead Band Pressure Switches Principle The SOR Adjustable Dead Band pressure switch incorporates two industry proven Static “O” Ring pressure sensing elements. Media pressure on the areas of the pistons counteracts the forces of the range springs — each adjustable by a separate adjusting nut — and moves the piston shafts to operate the lever assembly which, in turn, actuates and deactuates the electrical switching element. Each pressure sensing element of the Adjustable Dead Band pressure switch is a force balance piston-actuated assembly sealed by a flexible diaphragm and an o-ring that is static. The only wetted parts are the single pressure port, two diaphragms, and two o-rings all indicated with asterisks (*) in this illustration. Electrical Switching Element (Explosion Proof Model has Hermetically Sealed Switching Element Capsule) Screw Terminal Block (Weathertight Model Only) Lever Assembly Calibration Scale Calibration Scale Housing Increasing Set Point Adjusting Nut Decreasing Set Point Adjusting Nut Piston Assembly Piston Assembly Pressure Range Spring Pressure Range Spring *Diaphragm *Diaphragm *O-Ring *O-Ring *Pressure Port Principle Schematic The lever assembly travel illustrated here has been exaggerated for clarity. No Pressure: Electrical switching element is deactuated. Pressure greater than decreasing Set Point but less than increasing Set Point. Electrical switching element remains deactuacted. Actuation Pressure equal to or greater than increasing Set Point: Electrical switching element is actuated. 2/16 Deactuation Pressure less than increasing Set Point but greater than decreasing Set Point: Electrical switching element remains actuated. Registered Quality System to ISO 9001 | 913-888-2630 | SORInc.com Pressure equal to or less than decreasing Set Point: Electrical switching element is deactuated. Form 281 (12.15) ©SOR Inc. Adjustable Dead Band Pressure Switches How to Order Model Number System 5V1-LA3-N6-C1A-YY Housing Switching Element Diaphragm Pressure Port Accessories How to Order Information and data in this catalog are formatted to provide a convenient guide to assist instrument engineers, plant engineers and end users in selecting pressure switches for their unique applications. Steps 1 through 5 are required. Step 6 is optional. Orders must have complete model numbers, i.e. each component must have a designator. Step 1: Select Adjustable Range from pages 4, 5 and 6 to fill in and . Step 2: Select Housing. Weathertight or explosion proof/weathertight (page 6). Step 3: Select electrical Switching Element for electrical service (page 7). Step 4: Select Diaphragm and O-Ring for process compatibility and containment (page 8). Step 5: Select Pressure Port for process compatibility and connection (page 9). Step 6: Select Accessories required for service (page 9). If Agency Approved, Certified or Listed pressure switches are required, see page 10 for components that must be specified. Form 281 (12.15) ©SOR Inc. SORInc.com | 913-888-2630 | Registered Quality System to ISO 9001 3/16 Adjustable Dead Band Pressure Switches Step 1: Adjustable Range 5V1-LA3-N6-C1A-YY Six adjustable dead band ranges are available. Each adjustable range is displayed on a grid (pages 5 and 6). Determine the correct adjustable range for the application by checking increasing and decreasing Set Point requirements against the tables. In the example below, a contact closure is required when pressure increases to 160 psi. The same contact must open when pressure decreases to 60 psi. Since 60 psi is within the blue field, the example grid range is correct for the application. When the correct range grid is selected, insert range designators and from that grid into the model number. Step 1 Find the specified increasing Set Point at the top of the graph. Increasing Set Point (psi) 80 200 100 120 160 200 240 Step 2 Find the specified decreasing Set Point along the left edge of the graph. Decreasing Set Point (psi) 5-3 160 Step 3 Following the vertical line down from the increasing Set Point. Follow the horizontal line across from the decreasing Set Point. Any point within the blue field is acceptable. 120 80 40 20 0 1 5 2 3 5V1-LA3-N6-C1A-YY 1st and 4th places in model number 4/16 Registered Quality System to ISO 9001 | 913-888-2630 | SORInc.com Form 281 (12.15) ©SOR Inc. Adjustable Dead Band Pressure Switches Step 1: Adjustable Range 5V1-LA3-N6-C1A-YY Increasing Set Point (psi) 9 5 18 17 13 21 25 Overrange 750 psi 50 bar Proof 1000 psi 70 bar 80 Decreasing Set Point (psi) Decreasing Set Point (psi) 22 Increasing Set Point (psi) 14 10 80 6 40 20 30 0 1 4 2 60 40 20 0 4 1 100 120 160 200 240 150 350 Decreasing Set Point (psi) 160 120 80 40 20 1 Form 281 (12.15) ©SOR Inc. 5 2 300 SORInc.com 2 3 200 250 350 450 Overrange 2500 psi 170 bar Proof 3875 psi 267 bar 200 100 50 0 3 6 Increasing Set Point (psi) Overrange 1500 psi 100 bar 5-3 Proof 2500 psi 170 bar Decreasing Set Point (psi) 100 Overrange 1500 psi 100 bar Proof 2500 psi 170 bar Increasing Set Point (psi) 0 80 10 2 80 200 60 40 1 9 2 4 | 913-888-2630 | Registered Quality System to ISO 9001 5/16 Adjustable Dead Band Pressure Switches Step 1: Adjustable Range 5V1-LA3-N6-C1A-YY Increasing Set Point (psi) 400 600 800 Overrange 2500 psi 170 bar Proof 3875 psi 267 bar Increasing Set Point (psi) 1000 1500 Decreasing Set Point (psi) Decreasing Set Point (psi) 300 800 600 900 1200 1500 1750 Overrange 2500 psi 170 bar Proof 3875 psi 267 bar 1200 600 400 200 900 600 100 300 200 0 100 0 1 9 2 5 1 9 2 45 Step 2: Housing 5V1-LA3-N6-C1A-YY Service Non-Hazardous Locations Hazardous Locations (UL Listed/CSA Certified, ATEX and SAA Approved Snap Switch) 6/16 Description Designator Weathertight for non-hazardous service. NEMA 4, 4X & IP65 Electrical conduit connection: 3/4” NPT(F) Material: 356 aluminum Use LA or SA switching element and terminal block. Shipping weight: 4 pounds (2 kgs) See cutaway view on page 2; dimensions on page 14. V1 Explosion proof and weathertight. NEMA 4, 4X & IP65. Class I, Group A, B, C, D; Class II, Group E, F, G; Division 1 & 2 Electrical conduit connection: 3/4” NPT(F) Material: 356 aluminum Use AG switching element; hermetically sealed SS capsule Shipping weight: 5 pounds (2.5 kgs) V3 Registered Quality System to ISO 9001 | 913-888-2630 | SORInc.com Form 281 (12.15) ©SOR Inc. Adjustable Dead Band Pressure Switches Step 3: Switching Elements 5V1-LA3-N6-C1A-YY Switching Element Service Contact Form Electrical Connection Type Normal Service AC Very High Capacity DC Magnetic Blow-out AC or DC SPDT DPDT Screw Terminal Block 18” 18 AWG color-coded wire leads 3/4” NPT(M) conduit connection AC Rating Designator Volts Amps Volts Amps Volts 250 15 125 .5 30 10* 180 80 LA N/A - - 180 80 SA N/A 30 5.0 160 70 N/A AG 125 10 125 1.5 Min. 10.0 Max. 250 11 125 .5* 1. The switching elements shown above are UL Listed and CSA Certified. The DC current rating marked (*) is not UL Listed but has been verified by testing and/or experienced. 2. The hermetically sealed switching element capsule is UL Listed, CSA Certified and SAA Approved as a snap switch in accordance with the following table. 3. Consult the factory for availability of SAA Approved units. Form 281 (12.15) ©SOR Inc. Maximum Ambient Temperature DC Rating Resistive Agency Amps Deg F Deg C SPDT DPDT Hazardous Location Conditions CSA Certified Class I, Group A, B, C, D; Class II, Group #, F, G; Division 1 & 2 SAA Note 3 Approved Ex s Zone 2 IIC T4 IP65 Ex tD A22 T105 °C IP65 ATEX Approved II 2 G EEx m II UL Listed Designator AG SORInc.com | 913-888-2630 | Registered Quality System to ISO 9001 7/16 Adjustable Dead Band Pressure Switches Step 4: Diaphragm and O-Ring 5V1-LA3-N6-C1A-YY Notes 1. N4 diaphragm system is standard. It is normally suitable for air, oil, water and noncorrosive processes. 2. Other diaphragm and o-ring combinations may be available. Consult the factory or the SOR representative in your area for more information. 3. Wetted parts have been selected as representing the most suitable commercially available material for use in the service intended. However, they do not constitute a guarantee against corrosion or permeation, since processes vary form plant to plant and concentration of harmful fluids, gases or solids vary from time to time in a given process. Emperical experience by users should be the final guide. Alternate materials based on this are generally available. 4. Specify N3 diaphragm system for high cycle rate, high shock applications where Buna-N and TCP are compatible with the process. 5. This table shows allowable minimum and maximum temperature for o-rings. Viton Kalrez Viton Kalrez Viton Kalrez Viton Kalrez Diaphragm (Wetted) Designator A4 Monel A6 Hastelloy-B Hastelloy-C Carpenter-20 H4 H6 J4 J6 L4 L6 Viton GLT M1 Buna-N M2 Viton M4 Neoprene 316L SS M5 Kalrez M7 Aflas M8 EPR M9 Note 6 Viton N1 Buna-N TCP Teflon-Coated Polyimide N3 Note 4 O-Ring Material °F °C Viton 32 to 400 0 to 204 Viton GLT -20 to 400 -29 to 204 Kalrez Kalrez* 5 to 400 -15 to 204 Kalrez Kalrez N6 Aflas 25 to 400 -4 to 204 EPR -30 to 200 -34 to 93 Aflas TCP Teflon-Coated Polyimide N7 Buna-N Neoprene EPR TCP Teflon Coated Polyimide Diaphragm Buna-N Buna-N P1 -30 to 400 -34 to 204 Neoprene Neoprene R1 Viton GLT 6. M9 diaphragm system is suggested for steam applications up to 400oF. 7. Dead bands are slightly higher when using H, J, W, N3, or N6 series diaphragm options. Consult the factory. Registered Quality System to ISO 9001 Buna-N Viton *Kalrez or equivalent Perfluoroelastomer (FFKM) o-rings 8/16 O-Ring (Wetted) Neoprene | 913-888-2630 | SORInc.com N8 S1 Viton S2 W2 Tantalum Kalrez EPR Ethylene Propylene Note 1 N5 Buna-N Viton N4 Standard W4 W5 W6 EPR Ethylene Propylene Y1 Form 281 (12.15) ©SOR Inc. Adjustable Dead Band Pressure Switches Step 5: Pressure Port 5V1-LA3-N6-C1A-YY Material Connection Designator Aluminum Alloy 356 copper-free casting 1/4” NPT(F) B1A 1/2” NPT (F) B2A 1/4” NPT(F) C1A 1/2” NPT (F) C2A 316SS CF-8M Casting Step 6: Accessories 5V1-LA3-N6-C1A-YY Accessory / Option & Description Designator Wetted parts are cleaned for industrial oxygen service. BB CSA Certified pressure switch. Available with V1 housing. Housing has earth (ground) lug. See agency listings on page 10 for details. CS Cemented cover gasket on weathertight housing. GC Universal terminal box, 1/2” NPT(F). 316SS. Explosion proof. FM Approved; CSA Certified. See form 657 (Catalog GI-30). HT Vacuum protector plate retains diaphragm system in the pressure switch if subjected to intermittent vacuum greater than 10 in Hg. If a pressure switch is subjected to continuous, rapid changes of vacuum, other protection may be available (consult factory). Material matches or exceeds pressure port material. MM Compliance to NACE Certification MR0175/ISO 15156* NC Pipe (stanchion) mounting kit for (1-1/2” to 2” pipe). Order as a separate line item for CSA Certified pressure switches. PK Tag, fiber. Attached with plastic wire to housing. Stamped with customer-specified tagging information. PP Powder coat epoxy coating. No coating on stainless steel parts or plated screws. (500 hours-salt spray) PY Tag, stainless steel. Attached with stainless steel wire to housing. Stamped with customer specified tagging information. (2 lines, 18 characters and spaces per line.) RR Stainless steel piston and cylinder disc for corrosion resistance. SP Explosion proof and weathertight electrical junction box with screw terminals. Aluminum 3/4” NPT(F) top or right conduit connections as required. UL Listed and CSA Certified Class I, Groups A, B, C & D; Class II, Group E, F & G; Division 1 & 2. Includes cover o-ring for weathertight applications. (V3 housing only.) TB Oversize stainless steel nameplate. Permanently attached to housing. Stamped with customer specified tagging information TT Fungicidal varnish. Covers exterior and interior except working parts. VV Epoxy coating. Exterior only. Polyimide epoxy with 316SS pigment. (200 hours-salt spray) YY Chained cover with captive screws to conform to former JIC specification ZZ “X” is used as a suffix to the model number for special requirements not keyed elsewhere in the model number by an “X”. Each “X” must be completely identified in the text of the order or inquiry. When more than one “X” is required, use “X” followed by the number of such items. For example, “X3” means three separate, otherwise unidentifiable requirements. Form 281 (12.15) ©SOR Inc. SORInc.com X | 913-888-2630 | Registered Quality System to ISO 9001 9/16 Adjustable Dead Band Pressure Switches Certificates C1 Calibration ¿ Hydrostatic Pressure Test C2 C3 C4 C5 C6 C8 ¿ Inspection Report ¿ Compliance / Conformance Test Certificates B1 B4 B5 B6 B7 A1 A2 A3 A4 A5 A6 A7 A8 ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ Dielectric Test ¿ ¿ ¿ Insulation Resistance ¿ Typical Material of Wetted Parts ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ Agency Listings The following combinations only are available as approved, certified or listed by the agencies shown. Some components are for products not offered in this catalog. Certain components or combinations may acquire additional approval, certification or listing between print dates of this catalog. Contact the factory for the most current information. CSA 10/16 Enclosure 4 (Weathertight) Piston Housing Switching Element Spring Diaphragm & O-Ring Pressure Port Material & Connection Size Accessories/ Option All V1 LA, SA All All All CS Required All except TB Registered Quality System to ISO 9001 | 913-888-2630 | SORInc.com Form 281 (12.15) ©SOR Inc. Adjustable Dead Band Pressure Switches Glossary of Terms SOR recognizes that there is no industry convention with respect to terminology and definitions pertinent to pressure switches. This glossary applies to SOR Pressure Switches. Adjustable Range The span of pressure between upper and lower limits within which the pressure switch may be adjusted to actuate/deactuate. Dead Band The difference in pressure between the increasing Set Point and decreasing Set Point. Decreasing Set Point That discrete pressure at which the pressure switch is adjusted to deactuate on falling pressure. It must fall within the adjustable range. Hermetically Sealed A welded steel capsule with glass-to-metal, factory-sealed, electrical leads that isolates the electrical switching element(s) from the environment. Increasing Set Point That discrete pressure at which the pressure switch is adjusted to actuate on rising pressure. It must fall within the adjustable range. Overrange The maximum input pressure that may be continuously applied to the pressure switch without causing permanent change of Set Point, leakage or material failure. Pressure Switch A bi-stable electromechanical device that actuates/deactuates one or more electrical switching element(s) at a predetermined discrete pressure/vacuum (Set Point) upon rising or falling pressure/vacuum. Form 281 (12.15) ©SOR Inc. SORInc.com Proof Pressure The maximum input pressure that may be continuously applied to the pressure switch without causing leakage or catastrophic material failure. Permanent change of Set Point may occur, or destruction of the device may be rendered inoperative. Repeatability The ability of a pressure switch to successively operate at a Set Point that is approached from a starting point in the same direction and returns to the starting point over three consecutive cycles to establish a pressure profile. The closeness of the measured Set Point values is normally expressed as a percentage of full scale (maximum adjustable range pressure). SPDT Switching Element Single-Pole, Double Throw (SPDT) has three connections: C — Common, NO — Normally Open and NC — Normally Closed, which allows the switching element to be electrically connected to the circuit in either NO or NC state. DPDT Switching Element DPDT is two synchronized SPDT switching elements which actuate together at increasing Set Point and deactuate together at decreasing Set Point. Discrete SPDT switching elements allow two independent circuits to be switched; i.e., one AC and one DC. The synchronization linkage is factory set, and is not field adjustable. Synchronization is verified by connecting test lamps to the switching elements and observing them go “On” simultaneously at actuation and “Off” simultaneously at deactuation. | 913-888-2630 | Registered Quality System to ISO 9001 11/16 Adjustable Dead Band Pressure Switches Dimensions Dimensions in this catalog are for reference only. They may be changed without notice. Contact the factory for certified drawings for a particular model number. Dimensions are expressed as millimeters over inches (Linear = mm/in.). Drawing 0090300 Pipe Mounting Kit: PK Drawing 0091353 Junction Box with Terminal Block: TB 12/16 Registered Quality System to ISO 9001 | 913-888-2630 | SORInc.com Form 281 (12.15) ©SOR Inc. Adjustable Dead Band Pressure Switches Dimensions Drawing 0090763 Junction Box with Terminal Block: HT Weights V1 Housing V3 Housing 4 lbs (2 kgs) 5 lbs (2.5 kgs) Accessory Pk Pipe Kit TB Junction box with Terminal Block Add lbs kgs 1.5 0.7 5 2.25 Actual shipping weights may vary from the charted values because of product material, configuration and packaging requirements. Form 281 (12.15) ©SOR Inc. SORInc.com | 913-888-2630 | Registered Quality System to ISO 9001 13/16 Adjustable Dead Band Pressure Switches Housing Dimensions Dimensions in this catalog are for reference only. They may be changed without notice. Contact the factory for certified drawings for a particular model number. Dimensions are expressed as millimeters over inches (Linear = mm/in.). Drawing 0090236 Non-Hazardous Locations Weathertight NEMA 4, 4X, IP65 Housing Designator: V1 Drawing 0090325 Hazardous Locations Contains Explosion Proof, Hermetically Sealed Switching Element Capsule: UL Listed, CSA Certified, ATEX and SAA Approved Housing Designator: V3 14/16 Registered Quality System to ISO 9001 | 913-888-2630 | SORInc.com Form 281 (12.15) ©SOR Inc. Notes Form 281 (12.15) ©SOR Inc. SORInc.com | 913-888-2630 | Registered Quality System to ISO 9001 15/16 SOR Inc. | Lenexa, KS USA | 913-888-2630 | Fax 913-888-0767 | SORInc.com REGIONAL OFFICES China Middle East SOR China | Beijing, China SOR Measurement & Control Equipment Trading DMCC | Dubai, UAE +86 (10) 5820 8767 | Fax +86 (10) 58 20 8770 16/16 Registered Quality System to ISO 9001 +971 4 278 9632 | Fax +971 4 279 8399 | 913-888-2630 | SORInc.com Form 281 (12.15) ©SOR Inc.
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