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SOR
mechanical level switches
®
are rugged, industrial products specifically
designed for versatility of application. This catalog
contains application and ordering data for float and
displacer-operated level switches. Switches are
available with flanged or sealed chambers or
as insertion models.
Options available for each type of switch
include: switch type and number, housing type,
chamber material, process connections,
accessories, and more. Units may be
customized to suit customers' needs.
Inside this catalog you will find solutions to
your level sensing puzzles. SOR mechanical
level switches have many configurations
available. If you don't see what you need, we
will engineer a solution for your application.
• Five-year warranty
• ASME Section IX and AWS qualified
welding system
• Designed to ANSI/ASME B31.1 and
B31.3 guidelines
• Hermetically sealed switching
mechanisms available
• Stainless steel switching mechanisms
• High-temperature capability
• Wide variety of explosion-proof housings
• Versatile switching mechanisms which
retro-fit into other manufacturers' units
sorinc.com
Mechanical
Level Switches
Registered Quality System to ISO 9001:2008
200 Series
100 Series
• Worldwide listings and certifications
• Quick worldwide delivery
• Only ASTM grade materials with
certified mill test reports used
• 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).
Form 912
700 Series
913-888-2630

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Summary of Contents for SOR 200 series

  • Page 1 Units may be customized to suit customers’ needs. Inside this catalog you will find solutions to your level sensing puzzles. SOR mechanical level switches have many configurations available. If you don’t see what you need, we 100 Series will engineer a solution for your application.
  • Page 2 Mechanical Level Switches 700 Series Mounted Mounted Float Displacer 208 Steam Trap Float 400 Series Side Mounted Float Form 912 sorinc.com Registered Quality System to ISO 9001:2008 913-888-2630 2/60...
  • Page 3: Table Of Contents

    How to Order ....................8 Float Switches 100 Series Flanged External Cage ..........9 200 Series Sealed External Cage ..........14 108/208 Series Steam Condensate External Cage ....18 300 Series Top Insertion Mount ............. 20 400 Series Side Insertion Mount ........... 23 Displacer Switches Models 741-743, and 802 Flanged External Cage ....
  • Page 4: Principles

    Mechanical Level Switches Principles Float-Operated Level Switches Model Series 100, 200 and 300 The float rides on the process liquid surface, precisely tracking liquid surface motion. Switching Element Common Rising liquid level lifts the float, sliding the attraction Normally Open sleeve up inside the enclosing tube and into the Normally Closed magnetic field to actuate the electrical or...
  • Page 5 Mechanical Level Switches Principles Displacer-Operated Level Switches Model Series 700, 730, 740, 750 and 800 Displacer controls offer alternative features to the float-operated control. The sensor is a Switching Element weight (displacer), heavier than the liquid, that Common is suspended by a spring. When liquid contacts Normally Open the displacer, a buoyancy force is produced, Normally Closed...
  • Page 6: Features And Benefits

    Safety Certified to IEC 61508 (SIL)  Standard Chamber Materials All SOR level switch chambers are constructed using ASTM grade materials  with full material certification. Mill Test Reports are kept on file for all raw materials. Copies are available upon request at the time of order placement.
  • Page 7  all raw materials. 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).
  • Page 8: How To Order

    Material The level switch model number is divided into seven sections that individually specify the components of an SOR level switch. This diagram illustrates the model number arrangement. Select the component designators from the appropriate pages of this brochure. Standard components and ratings are highlighted throughout the brochure for ease of use.
  • Page 9 100 Series Step 1: Model Series A-A1C-B-A1-N4-CRTT The 100 Series mechanical liquid level switch is float operated with a flanged, serviceable external chamber. Select the sensing unit from the following charts. Then refer to pages 44 through 50 for switching elements, housings and accessories. Select a model series from the charts below based on maximum operating pressure and minimum specific gravity.
  • Page 10 100 Series Step 2: Chamber Material 101 A-A1C-B-A1-N4-CRTT Select chamber material from the following chart. Maximum working pressure in the chart on page 9 is based on the material selected here. Consult the factory for alternative materials. Designator Material A106 Grade B Carbon Steel with A105 and A234-WPB fittings A312-TP316/316L Stainless Steel with A182-316/316L and A403-316/316L fittings Step 3: Process Connection 101 A-A1C-B-A1-N4-CRTT...
  • Page 11 100 Series Calibration Dimensions The charts below provide typical standard Set Points. As the specific gravity used on a level switch changes, the Set Points will also change. These values are based on the specific gravity listed and units with “B” trim and an A1 switch. For other materials or switches, please consult factory. If a specific Set Point is needed, please use the “SC”...
  • Page 12 Dimensions listed are for reference only and are expressed as millimeters over inches. (Linear = mm/in.) MODEL # SALES ORDER DRAWING NUMBER They are subject to change without notice. Contact SOR for certified drawings of particular models or if 0390019 PURCHASE ORDER # MODEL # SALES ORDER # special dimensions are required.
  • Page 13 100 Series Chamber Dimensions 1” Connection 1, 2 1, 2 Model inch inch inch mm inch mm inch mm inch inch 16-5/8 10-1/2 3-3/4 6-1/2 3-3/4 17-5/16 10-1/4 4-13/16 122 7-7/16 189 4-9/16 19-3/4 12-5/8 5-13/16 148 8-7/16 214 7-1/2 191 17-13/16 16-3/8 3-1/4...
  • Page 14 Step 1: Model Series A-A1C-B-A1-N4-CRTT The 200 Series mechanical level switch is float operated with a sealed, tamper-proof external chamber. Select the sensing unit from the following charts. Then refer to pages 44 - 50 for switching elements, housings and accessories.
  • Page 15 200 Series Step 2: Chamber Material 201 A-A1C-B-A1-N4-CRTT Select chamber material from the following chart. Maximum working pressure in the chart on this page is based on the material selected here. Consult the factory for alternative materials. Designator Material A106 Grade B Carbon Steel with A105 and A234-WPB fittings...
  • Page 16 Dimensions listed are for reference only and are expressed as millimeters over inches. (Linear = mm/in.) They are subject DRAWING NUMBER PURCHASE ORDER # LINE ITEM # 0390661 to change without notice. Contact SOR for certified drawings of particular models or if special dimensions are required. MODEL # SALES ORDER # 146.1 * MINIMUM...
  • Page 17 200 Series Chamber Dimensions 1” Connections 1, 2 1, 2 1, 2 Model inch inch inch mm inch mm inch mm inch inch 10-1/4 4-13/16 7-7/16 189 4-9/16 116 15-3/16 10-1/2 3-3/4 6-1/2 3-3/4 14-3/8 10-1/4 4-13/16 7-7/16 189 4-9/16...
  • Page 18 108/208 Series Step 1: Model Series A-E1A-F-A1-N4-CRTT The 108/208 Series mechanical level switches are float operated, horizontal mounted with sealed, tamper-proof or flanged, serviceable chambers. Select the sensing unit from the following charts. Then refer to pages 44 - 50 for switching elements, housings and accessories. Select a model series from the charts below based on maximum operating pressure and minimum specific gravity.
  • Page 19 Dimensions listed are for reference only and are expressed as millimeters over inches. (Linear = mm/in.) DRAWING NUMBER PURCHASE ORDER # 0390667 They are subject to change without notice. Contact SOR for certified drawings of particular models or if CONN MODEL # SALES ORDER # MODEL special dimensions are required.
  • Page 20 300 Series Step 1: Model Series A-F1A-B-A1-N4-CRTT The 300 series mechanical level switches are float-operated switches suitable for top-insertion mounting. Select the sensing unit from the following charts. Then refer to pages 44 - 50 for switching elements, housings and accessories. Select a model series from the charts below based on maximum operating pressure and minimum specific gravity.
  • Page 21 300 Series Step 3: Process Connection 301 A-F1A-B-A1-N4-CRTT Select a process connection, size and designator from the chart below. Consult the factory for variations. Flanged process connections may reduce the maximum working pressure of the unit. Select Designator Flange Size Thread 150# 300#...
  • Page 22 DATE 3/6/12 DATE 3/6/12 THIS DRAWING IS THE EXCLUSIVE PROPERTY OF SOR. NO USE WHATSOEVER OF THE INFORMATION CONTAINED THIS DRAWING IS THE EXCLUSIVE PROPERTY OF SOR. HEREON, NOR REPRODUCTION IN WHOLE OR PART MAY BE NO USE WHATSOEVER OF THE INFORMATION CONTAINED NOTES: MADE WITHOUT THE EXPRESS WRITTEN PERMISSION OF SOR.
  • Page 23 400 Series Step 1: Model Series A-G3A-B-A1-N4-CRTT The 400 Series mechanical level switch is float operated suitable for horizontal-insertion mounting. Select the sensing unit from the following charts. Then refer to pages 44 - 50 for switching elements, housings and accessories. Select a model series from the charts below based on maximum operating pressure and minimum specific gravity.
  • Page 24 J FIFE materials. DATE 08 APR 2011 263.5 THIS DRAWING IS THE EXCLUSIVE PROPERTY OF SOR. 18.0 10.38 NO USE WHATSOEVER OF THE INFORMATION CONTAINED HEREON, NOR REPRODUCTION IN WHOLE OR PART MAY BE MADE WITHOUT THE EXPRESS WRITTEN PERMISSION OF SOR.
  • Page 25 400 Series Calibration Dimensions Standard Differential (D) Note: With anti-vibration, extra-high Model “D” @ Minimum Specific Gravity temperature and pneumatic switch, minimum differential will increase. 3” (76 mm) 2-3/4” (70 mm) Maximum Differential (D) Differential Dimension “D” is calibrated to the minimum shown above as standard. Wider differentials are available by placing an SC in the accessory section of the model number.
  • Page 26 741-743 and 802 Series Step 1: Model Series A-A1C -B-A1-N4-CRTT The 741-743 and 802 Series mechanical level switches are displacer-operated with flanged, ser- viceable external chambers. Select the sensing unit from the following charts. Then refer to pages 44 - 50 for switching elements, housings and accessories. Select a model series from the charts below based on maximum operating pressure and minimum specific gravity.
  • Page 27 741-743 and 802 Series Step 3: Process Connection 741 A-A1C-B-A1-N4-CRTT Select a process connection size, style and designator from the chart below. Consult the factory for variations. Flanged process connections may reduce the maximum working pressure of the unit. Flange Socket Size Style...
  • Page 28 Dimensions listed are for reference only and are expressed as millimeters over inches. (Linear = mm/in.) MODEL # DRAWING NUMBER SALES ORDER # 0390019 They are subject to change without notice. Contact SOR for certified drawings of particular models or if PURCHASE ORDER # MODEL # SALES ORDER # special dimensions are required.
  • Page 29 741-743 and 802 Series Chamber Dimensions 1” Connections 1, 2 1, 2 Model inch inch inch mm inch mm inch mm inch inch 19-5/16 3-1/4 3-3/4 19-1/2 19-7/8 12-3/4 3-7/8 6-3/4 20-3/4 1-1/2” Connections Model inch inch inch mm inch mm inch mm inch inch...
  • Page 30 740 and 804 Series Step 1: Model Series A-A1C-B-A1-N4-CRTT The 740 and 804 Series mechanical level switches are displacer operated with sealed, tamper-proof external chambers. Select the sensing unit from the following charts. Then refer to pages 44 - 50 for switching elements, housings and accessories. Select a model series from the charts below based on maximum operating pressure and minimum specific gravity.
  • Page 31 740 and 804 Series Step 3: Process Connection 740 A-A1C-B-A1-N4-CRTT Select a process connection size, style and designator from the chart below. Consult the factory for variations. Flanged process connections may reduce the maximum working pressure of the unit. Flange Socket Size Style...
  • Page 32 7.12 REQUIRED TO REMOVE H over inches. (Linear = mm/in.) They are subject to change without notice. 101.6 4.00 Contact SOR for certified drawings of particular models or if special DRAWING NUMBER 0390660 MODEL # SALES ORDER # dimensions are required.
  • Page 33 700 Series Step 1: Model Series A-F7A-B-A1-N4-CRTT The 700 Series mechanical level switches are single-stage, displacer-operated switches suitable for top-insertion tank mounting. Select the sensing unit from the following charts. Then refer to pages 44 - 50 for switching elements, housings and accessories. Select a model series from the charts below based on maximum operating pressure and minimum specific gravity.
  • Page 34 700 Series Step 3: Process Connection 702 A -F7A-B-A1-N4-CRTT Select a process connection style, size and rating from the chart below. Consult the factory for variations. Flanged process connections may reduce the maximum working pressure of the unit. Model Size Style 2-1/2”...
  • Page 35 R SAVERINO ENGINEER APPROVAL DATE LINEAR = SBOAL Explosion Proof 27 JUL 2011 DATE THIS DRAWING IS THE EXCLUSIVE PROPERTY OF SOR. 1” NPT 63.5 63.5 2/4/03 NO USE WHATSOEVER OF THE INFORMATION CONTAINED Explosion Proof 2.50 HEREON, NOR REPRODUCTION IN WHOLE OR PART MAY BE 2.50...
  • Page 36 730 Series Step 1: Model Series A-F7A-B-A2-N4-CRTT The 730 Series mechanical liquid level switches are dual-stage, displacer-operated switches suitable for top-insertion tank mounting. Select the sensing unit from the following charts. Then refer to pages 44 - 50 for switching elements, housings and accessories. Select a model series from the charts below based on maximum operating pressure and minimum specific gravity.
  • Page 37 730 Series Step 3: Process Connection 731 A -F7A-B-A2-N4-CRTT Select a process connection style, size and rating from the chart below. Consult the factory for variations. Flanged process connections may reduce the maximum working pressure of the unit. Model Size Style 2-1/2”...
  • Page 38 21 JUN 2011 DATE 7.70 2/4/03 THIS DRAWING IS THE EXCLUSIVE PROPERTY OF SOR. NO USE WHATSOEVER OF THE INFORMATION CONTAINED THIS DRAWING IS THE EXCLUSIVE PROPERTY OF SOR. HEREON, NOR REPRODUCTION IN WHOLE OR PART MAY BE NO USE WHATSOEVER OF THE INFORMATION CONTAINED MADE WITHOUT THE EXPRESS WRITTEN PERMISSION OF SOR.
  • Page 39 730 Series Specific Gravity Ranges Optional Switching Arrangements Dual-stage, wide differential switches may be ordered with switching arrangements different from those shown on page 38. To order, select the desired arrangement below and add to the accessory section of the model number. At the time of order, specify the required arrangement number.
  • Page 40 750 Series Step 1: Model Series A-F7A-B-A3-N1-CRTT The 750 Series mechanical level switches are three-stage, displacer-operated switches suitable for top-insertion tank mounting. Select the sensing unit from the following charts. Then refer to pages 44 - 50 for switching elements, housings and accessories. Maximum Working Pressure Minimum Pressure Rating - psig (bar)
  • Page 41 750 Series Step 3: Process Connection 751A -F7A-B-A3-N1-CRTT Select a process connection style, size and rating from the chart below. Consult the factory for variations. Flanged process connections may reduce the maximum working pressure of the unit. Model Size Style 2-1/2”...
  • Page 42 R SAVERINO 190.5 190.5 7.50 7.50 DATE 27 JUL 2011 THIS DRAWING IS THE EXCLUSIVE PROPERTY OF SOR. BOTTOM BOTTOM NO USE WHATSOEVER OF THE INFORMATION CONTAINED SWITCH SWITCH HEREON, NOR REPRODUCTION IN WHOLE OR PART MAY BE MADE WITHOUT THE EXPRESS WRITTEN PERMISSION OF SOR.
  • Page 43 750 Series Specific Gravity Ranges Optional Switching Arrangements Three-stage, wide differential switches may be ordered with switching arrangements different from those shown on page 39. To order, select the desired arrangement below and add the accessory section of the model number. At the time of order, specify the required arrangement number.
  • Page 44 Level Switches Switching Mechanisms SOR switching mechanisms are designed for use in harsh industrial atmospheres. SOR offers a variety of electrical and pneumatic switching mechanism types to fit a wide range of applications. The basic types of switch mechanisms available are listed below. See page 47 for specifications.
  • Page 45 Mechanical Level Switches Switching Mechanisms Pneumatic Switch Type J Pneumatic switches are available for applications that prohibit electrical switching or where electricity is not available. Pneumatic switches feature: Three-way aluminum valve  Anti-vibration design  1/4" NPT ports in 316SS for additional ...
  • Page 46: Switching Mechanisms

    Mechanical Level Switches Switching Mechanisms 741A -A1C-B-A1-N4-CRTT Select the switch mechanism from the chart below. SPDT DPDT 3-Way Available Agency Switch Type Single Pole Double Pole Valve Listings Double Throw Double Throw Switching Stages Single Dual Triple Single Dual Triple Single Switching Description Switch Designator...
  • Page 47: Switch Ratings

    Mechanical Level Switches Switch Ratings Resistive Amperage Inductive Amperage Minimum Maximum Switch Designator Temperature Temperature -15 ° F 250 ° F (121 ° C) Standard Dry Contact (-26°C) Hi-Temperature Dry -15 ° F 400 ° F (204 ° C) (-26°C) Contact -15 °...
  • Page 48: Housings

    Level Switches Housings 741A -A1C-B-A1-N4-CRTT SOR housings are designed to protect the switching mechanisms from harsh environmental conditions, as well as protecting the surrounding atmosphere from potential ignition sources. The basic types of housings are listed below. General Purpose, NEMA 4 Housings are heavy duty cast aluminum.
  • Page 49: Accessories

    741A -A1C-B-A1-N4-CRTT SOR accessories are provided for customizing the level switches in this catalog according to the requirements of the application. Place accessory designator(s) from the table below at the end of the model number. Check the compatibility chart below for correct use of each accessory.
  • Page 50: Test Certificates

    Mechanical Level Switches Test Certificates Float Operated Switches Certificates Series 100 Calibration ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ Hydrostatic Series 200 ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ ¿ Pressure Test Inspection Series 220 ¿...
  • Page 51: High Temperature Selection

    52 for application. 9.00 To Specify 14685 W ISO-9001 Add Accessory Designator ET to the end of the SOR level switch model number per the selection chart on the next page. PRODUCT CERTIFICA ALL DIMENSIONS TEMPERATURE...
  • Page 52: High Temperature Selection

    To reduce the heat effects of condensing processes, we must either condense or physically block the vapor. SOR uses a condensing system to avoid the sealing problems associated with blocking the steam. Dry Heat processes transfer heat through direct conduction. Heat is only passed to the areas where they touch the enclosure.
  • Page 53 Mechanical Level Switches High Temperature Selection Float Switch Pressure Ratings (in psi) above 450°F (232°C) ° ° ° ° ° ° Model Material (260 (288 (316 (343 (371 (399 ° ° ° ° ° ° CS & SS CS & SS CS &...
  • Page 54 ASME/ANSI B31.1 Power Piping ASME/ANSI B31.3 Petrochemical Piping If certification to B31.3 is required, SOR must know the fluid category per the chart below. Refer to the ASME/ANSI B31.3 Fluid Category Section to determine the applicable category. ANSI/ASME B31.3 Fluid Category Normal A fluid service not subject to the following four categories.
  • Page 55: Mc And Tc Options

    Atmospheric vented tanks or vessels These options are available on SOR level switch Series 701 through 704 and 730 through 733. MC and TC option available on carbon steel units only. Series 730 through 733 are more sensitive to both high and low SG values.
  • Page 56: Astm Material Designations

    Level Switches ASTM Material Designations SOR uses all ASTM grade materials in the construction of mechanical level switches. The following chart lists the specific ASTM (or UNS) materials that are normally used for each component in our switches. Consult the factory if you do not see the specific material required for your application.
  • Page 57: Specific Gravity Of Water

    Mechanical Level Switches Specific Gravity of Water The specific gravity of water changes depending on its temperature and pressure. The chart below lists properties of saturated steam. Saturated steam is the state where water is in transition between liquid and vapor. The chart provides the process temperature with the associated pressure and spe- cific gravity of the condensate water.
  • Page 58: Conversions

    Mechanical Level Switches Conversions General English-to-Metric unit conversions are listed below. Pressure To Convert from: Use this formula: Pounds per Square Inch (psi) 14.504 = psi Kilo Pascals (kPa) Pounds per Square Inch (psi) 0.145 = psi Mega Pascals (MPa) Pounds per Square Inch (psi) = psi Kilograms per cm...
  • Page 59: Weights

    Mechanical Level Switches Weights The approximate shipping weights shown below are for standard models. Weights will vary based on pipe size, length and flange size. Consult the factory for the weight of a specific unit. Floats Displacers Model pounds kilograms Page Model pounds...
  • Page 60 Fax +44 (0) 1403 864040 Phone +86 (10) 5820 8767 sorinc.com Fax +86 (10) 58 20 8770 Registered Quality System to ISO 9001 :2008 sorinc.com Form 912 Form 912 (07.12) ©2012 SOR Inc. 913-888-2630 Registered Quality System to ISO 9001:2008 60/60...

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