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Temperature Switches - Type 400, B-Series

Temperature Switches - Type 400, B-Series

Product catalog summary

Overview: The document provides comprehensive information on Ashcroft B-Series and 700-Series switches, designed for pressure, differential pressure, temperature, and hydraulic applications. These switches are suitable for industrial and process applications, offering high reliability and safety features.

Specifications:

High proof pressure and deadband limits for each switch.
Neoprene gasket for sealing and 3/4 NPT electrical connection for easy wiring.
Epoxy-coated aluminum enclosure for corrosion resistance, meeting NEMA 3, 4, 4X, 13, and IP66 requirements.
UL and CSA listed snap-action switch with ratings up to 10A dc or 20A ac.

Product Information: The Ashcroft B-Series switches are designed for durability and reliability in harsh environments such as offshore oil rigs, chemical plants, and power plants. They feature a variety of precision switch elements, including hermetically sealed contacts for added safety.

Applications: Suitable for use in pumps, compressors, filters, food processing, marine equipment, and more.

Hermetically Sealed Switch: Recommended for improved reliability in harsh environments, approved for Division II hazardous areas.

Recommended Practices: Proper selection of controls considering media and ambient conditions is crucial to prevent switch failure and potential injury or damage.

Pressure and Differential Pressure Switches: These switches use different actuators based on setpoint requirements, offering high reliability and a choice of actuator seal materials.

Temperature Switches and Thermowells: Thermowells are recommended for applications where the bulb may be exposed to pressure or corrosive fluids. The B-Series temperature switches feature a SAMA Class II vapor pressure thermal system for quick and accurate response to temperature changes.

Order Information: Detailed instructions are provided for specifying the exact switch model, including enclosure type, switch element selection, actuator seal, and range.

Material Specifications: The document lists various stainless steel grades (316 SS, 302 SS) and their applications in different components like springs and armor. It also provides bulb length selection for direct and remote mounts.

Switch Element Selection: A comprehensive table outlines different switch elements, their codes, and specifications such as UL/CSA listings, amperage, and voltage ratings. Options include narrow deadband, heavy-duty, hermetically sealed, and manual reset switches.

Temperature Range Selection: The document specifies adjustable temperature ranges in both Fahrenheit and Celsius, catering to various operational needs.

Enclosure Options: Enclosures are designed to protect switch elements from environmental factors. Options include watertight and explosion-proof enclosures meeting NEMA standards for different industrial applications.

Actuator and Seal Selection: Actuators respond to pressure or temperature changes and must be compatible with process fluids. The document details different actuator types and materials like Viton, Buna N, and Teflon, along with their temperature limits.

Additional Features and Terminology: The document explains key terms such as deadband, setpoint, reset point, and repeatability. It also covers optional features like ATEX approval for hazardous locations, which is crucial for European compliance.

Product Selection Guidelines: Before selecting a switch, consider the actuator type, enclosure, switching function, and electrical compatibility. The document advises consulting Ashcroft representatives for specific applications.

Optional Features and Accessories: The document mentions optional features like ATEX Directive 94/9/EC approval for hazardous locations, which is essential for equipment used in potentially explosive atmospheres.

Key Features of XCN Option:

Special locking device requiring an Allen wrench for cover removal.
Special vents to prevent pressure build-up in case of diaphragm rupture.
Special conduit plug requiring an Allen wrench for removal.
Applicable to pressure, temperature, and differential pressure models.
Complies with Explosion Class EEx d IIC T6 standards.

Specifications and Options:

Available in ranges from vacuum to 600 psi, excluding stainless steel or Monel diaphragms.
Various diaphragm materials and configurations are specified, including Buna N, Viton, and Teflon.
Pressure connections and mounting options are detailed, including NPT sizes and wall mounting brackets.

Application Considerations:

Material compatibility with process media is crucial to prevent failure and ensure safety.
Diaphragm seals are advised for high-temperature or sanitary applications.
Special considerations for oxidizing media, steam service, and high-temperature processes are provided.
Guidance on handling vibration and pulsation to prevent premature tripping or damage.

Mounting and Installation:

Switches can be mounted in any position, offering flexibility in installation.
Snap acting contacts are standard, with options for dual contacts for multiple switch functions.

Conclusion: The document serves as a comprehensive guide for selecting and configuring Ashcroft 700-Series switches, emphasizing safety, compatibility, and application-specific requirements.

Hazardous Locations:

Division I: Requires Ashcroft 700 series or other explosion-proof enclosures to meet National Electrical Code standards.
Division II: Can use Ashcroft 400 series or watertight enclosures with hermetically sealed switch elements.
Intrinsic Safety: Ashcroft 400 and 700 series switches can be used with approved barriers in intrinsically safe systems.
ATEX Approval: Optional for Ashcroft 700 series, compliant with ATEX directive 94/9/EC for explosive atmospheres.

Setting Ashcroft Switches:

Switches can be set between 15% and 100% of the range.
Factory setting option (XFS) is available with a specification of ±1% of the nominal range.
Orders must specify setpoint, pressure direction (increasing/decreasing), and static operating pressure for differential switches.

Ordering Guidelines:

Specify setpoint and pressure direction when ordering XFS.
Include static operating pressure for differential pressure switches.

Contact Information:

International operations are available in Brazil, Canada, China, France, Germany, Japan, Korea, Mexico, Saudi Arabia, Singapore, United Kingdom, and Venezuela.
Contact details include phone numbers, fax numbers, and email addresses for each location.

Catalog excerpts

Temperature Switches - Type 400, B-Series -2

UL and CSA listed instrument quality snap-action switch for reliable operation. Ratings up to 10A dc or 20A ac. Hermetically sealed switch also available. > 3 ҢD > 4 NPT electrical connection foreasy wiring.Accessible adjustment for convenientswitch setting, includes vibration- resistant feature.Epoxy-coated aluminum enclosure forcorrosion resistance. Meets NEMA 3, 4, 4X, 13 and IP66 requirements. High proof pressure. Deadband limits for each switch. Neoprene gasket for sealing enclosure. Standard pressure connection materials:Pressure psi ranges 316 SS Differential psid ranges ֖ Nickel-plated...

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Temperature Switches - Type 400, B-Series -3

RECOMMENDED PRACTICE: All controls should be selected consider-ing the media and ambient operatingconditions. Improper application can be detrimental to the switch, cause failureand possibly personal injury or property damage. Applications include: pumps, compres-sors, washers, filters, degreasers,evaporators, recovery systems, foodprocessing, ground support equip-ment, reverse osmosis systems, heatexchangers, hydraulic systems, lubrica-tion systems, marine equipment, textile machinery, heating and air conditioning equipment. The information in this catalog is offered > as a guide to assist in...

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Temperature Switches - Type 400, B-Series -5

D4 psid model shown 12345 B4 Pressure switch, Type 400, watertight enclosure OrderSwitch Elements meets NEMA 3, 4, 4X, 13 and IP66 requirements. Pressure switch, Type 700, explosion-proof CodeUL/CSA Listed SPDT 20 > (7) Narrow deadband ac15A, 125/250 Vac B7 enclosure meets Div. 1 & 2, NEMA 7, 9 and IP66 21 Ammonia service5A, 125/250 Vac requirements.Differential pressure switch, Type 400, water- 22 > (6) Hermetically sealed switch,5A, 125/250 Vac narrow deadband D4 tight enclosure meets NEMA 3, 4, 4X, 13 and 23 Heavy duty ac22A, 125/250 Vac IP66 requirements.Differential pressure switch, Type...

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Temperature Switches - Type 400, B-Series -7

Direct Mount T4 Temperature switch, Type 400, watertight enclosure meets NEMA 3, 4, 4X, 13 and IP66 requirements. Temperature switch, Type 700, explosion-proof Order CodeSystem MaterialStyle TS 3l6 SSRigid T7 enclosure meets Div. 1 & 2, NEMA 7, 9 and IP66requirements. Remote Mount Order CodeSystem MaterialLine LengthStyle > (9) T05 316 SS5Capillary > narrow deadband Direct MountMinimumOrderSӔThermowell Use table onpage 10 23 Heavy duty ac22A, 125/250 Vac 24 > (1) General purpose15A, 125/250/480 Vac > 1 ⁄ > 2 A, 125 Vdc CodeDimensionUӔ Dimension > 1 ⁄ > 4 A, 250 Vdc; 6A, 30 Vdc 027 > (8) 2 > 3...

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Temperature Switches - Type 400, B-Series -8

Hydraulic pressure switch, Type 400, watertight OrderSwitch Elements H4 enclosure meets NEMA 3, 4, 4X, 13 and IP66 requirements. CodeUL/CSA Listed SPDT 20 > (3) Narrow deadband ac15A, 125/250 Vac 23 Heavy duty ac22A, 125/250 Vac 24 > (1) General purpose15A, 125/250/480 Vac > 1 ֢D > 2 A, 125 Vdc > 1 CodeProcessandTemperature ⁄ > 4 A, 250 Vdc; 6A, 30 Vdc 25 Heavy duty dc10A, 125 Vac or dc, MaterialLimits F > (4) 1 ТD > 8 HP, 125 Vac or dc 26 > (3) Sealed environment proof15A, 125/250 Vac V Viton20 to 300Viton O-Ring, StainlessSteel Pressure Connection 27 High temperature 300ְF15A, 125/250 Vac 28...

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Temperature Switches - Type 400, B-Series -9

Hermetically Sealed Switch A switch element whose con-tacts are completely sealed from the environment to provideadditional safety and reliability. Contact arc cannot cause anexplosion, and atmospheric corrosive elements cannot affectthe contacts. Manual Reset Switch ֖ Pressure or Temp-erature switch inwhich contacts remain actuated even after the actuating vari-able returns to normal. On Ashcroft manual reset switches, abutton must be pushed to reset the contacts. > National Electrical Manufacturers Association (NEMA) Thisgroup has defined several categories of enclosures, usuallyreferred to...

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Temperature Switches - Type 400, B-Series -10

Appicable Switch Series DifferentialTemp- ATEX is a European designation thatdeals with standards for equipment andprotective systems intended for use in potentially explosive atmospheres. Thisapproval is required for switches intendedfor use in hazardous locations, especially important to OEMs who export to Europeand contractors specifying or purchasingproducts for European applications. XCN option adds special features toAshcroft 700-Series switch enclosuresthat meet the requirements for the highestlevels of security and danger, such as:?Special locking device requiring an Allenwrench to remove...

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Temperature Switches - Type 400, B-Series -11

XG9 FIRE-SAFE WELDED ACTUATOR > The Ashcroft pressure switch actuator isdesigned to satisfy most medium range pressure switch applications. It has only two wetted parts; pressure port and diaphragm. No O-rings are requiredbecause all joints are welded. The Ashcroft medium pressure gas andoil limit control switch is designed for use with air, LP gas, natural gas, #1 and #2 fuel oil and #6 oil preheated to 240ְF. This limit control is an adjustable pressure operated switch with a sec- ondary chamber to prevent fuel fromentering the switch enclosure in theunlikely event that the diaphragm devel-...

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Temperature Switches - Type 400, B-Series -12

B 0.28(3 Holes)DA(X06) CX06 Variation1/2 NPT Male & 1/4 NPT Female3/4 NPTF1/4 NPTFemale A IGE H A JK B ؘ 0.34(2 Holes) ENLM 3/4 NPT1/4 NPTFemaleBracket WhenRequired XBPӔVariation 1.8 lb(.81 kg) A (X06)ABCDEFGHI ABEJKLMN 5 > 7 ⁄ > 25 3 25 1 1 11 27 8 5 > 1 ⁄ > 8 43 > 1 ⁄ > 4 3 > 5 ⁄ > 16 2 > 3 ⁄ > 4 2 > 5 ⁄ > 16 1 > 1 ⁄ > 4 2 > 13 ⁄ > 32 2 > 5 ⁄ > 16 5 ⁄ > 32 42 ⁄ > 4 2 ⁄ > 32 5 ⁄ > 8 3 ⁄ > 16 5 ⁄ > 16 2 ⁄ > 32 2.7 lb(1.2 kg) (149)(130)(102)(83)(84)(70)(59)(32)(61)(59) (147)(102)(70)(71)(130)(78)(145)(72) > B 0.28(3 Holes)D 1/4 NPTHighPressureInlet1/4 NPTLow Pressure InletC IEAO F 3/4 NPT A JK...

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Temperature Switches - Type 400, B-Series -14

STEAM SERVICE In order to prevent live steam from cominginto contact with the switch actuator, a siphon filled with water should be installed between the switch and the process line. We recommend the optional stainless steelwelded process connection and diaphragmeven though viton is rated for use with steam. Expe- rience hasshown thatin many steam appli-cations, the300F high temperaturelimit of Vitonis exceeded by steam under pres-sure.In some boiler applications, a special U.L.listing, ГMBPR, which requires unique fea-tures, is needed. Dresser offers these fea- tures with option XG8. Refer also...

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Temperature Switches - Type 400, B-Series

Temperature Switches - Type 400, B-Series

Catalog excerpts

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