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741-743 & 802 Level Switch
Brand: SOR IncDisplacer controls offer alternative features to the float-operated control. The sensor is a weight (displacer), heavier than the liquid, that is suspended by a spring.
When liquid contacts the displacer, a buoyancy force is produced, which causes the effective weight of the displacer to change. This causes the spring to retract slightly to a new equilibrium position.
When the spring retracts, the attraction sleeve also moves upward into the field of the external magnet, thus overcoming the force of the bias spring and actuating the switching element.
This principle provides for narrow or wide switching differential, and allows switching point alteration by moving the displacer(s) up or down the suspension cables.
Displacers may be arranged in combinations of narrow and wide differential to operate up to three switching stages.
Displacer controls operate under higher pressure conditions than float-operated switches.
Specifications
Brand
Approvals & Certifications
- ATEX
- CE
- CRN
- CSA
- EAC
- Ex
- IECEX
- RTN
- UL
Approvals & Certifications
- 61508 for Non-Redundant: SIL 1 & SIL 2 Safety Instrumented Systems
- Certificate of Calibration
- Certificate of Conformance (Power Piping, ASME 31.1, 31.3)
- Compliance/Conformance
- Dielectric Test
- Dye Penetration Testing
- Hydrostatic Pressure Test
- Inspection Certificate
- Insulation Resistance
- Magnetic Particle Examination
- Mill Certificate
- QA Test Report
- Radiograph Examination
- Ultrasonic Examination
Conduit Connection
- 1/2” NPT
- 3/4” NPT
- M20 x 1.5
Electrical Connectors
- Electrical / Pneumatic Connection: 1” NPT
- Electrical / Pneumatic Connection: 1/4” NPT
- Electrical / Pneumatic Connection: M20 x 1.5 Adapter
Electrical Contacts
- Gold Contact
Electrical Rating
- 1-15 A at 110-250 Vac, Resistive/Inductive
- 1-15 A at 20-250 Vdc, Resistive/Inductive
Enclosure Finish
- Housing Exterior: Fungicidal Varnish
- Powder Epoxy Coated
Enclosure, Body Material
- Switch (Extended, Pneumatic): Cast Iron
- Valve (3-Way), Switch (Extended, Pneumatic): Aluminum
Environmental Protection
- IP66
- NEMA 4
- NEMA 4X
Flange Size - 1-1/2” (DN 40)
- 1-1/2” (DN 40) - 150#
- 1-1/2” (DN 40) - 1500#
- 1-1/2” (DN 40) - 300#
- 1-1/2” (DN 40) - 600#
Flange Size - 1” (DN 25)
- 1” (DN 25) - 150#
- 1” (DN 25) - 1500#
- 1” (DN 25) - 300#
- 1” (DN 25) - 600#
Flange Size - 2” (DN 50)
- 2” (DN 50) - 150#
- 2” (DN 50) - 1500#
- 2” (DN 50) - 300#
- 2” (DN 50) - 600#
Flange Type
- Raised Face (RF)
- Ring Joint Facing
Fluid Specific Gravity
- 0.41 to 0.57
Gasket Material
- 316 Stainless Steel wound around Grafoil
- Nitrile Binder Composite
Humidity
- < 85 %, Max.
Materials of Construction
- Attraction Sleeve Material: 400 Stainless Steel
- Chamber, Float, Displacer, Attraction Sleeve Material: 316 Stainless Steel
- Chamber, Float, Displacer, Attraction Sleeve Material: 316L Stainless Steel
- Chamber, Float, Displacer, Attraction Sleeve Material: Carbon Steel (A106B)
- Float, Displacer, Attraction Sleeve Material: Monel 400
- M20 Adapter: Brass
NACE & NIST
- NACE
Name Plate, Tag Material
- Stainless Steel
- Fiber
NPT Connection
- 1” NPT
- 1-1/2” NPT
- 2” NPT
O-Ring Material
- Buna-N
Operating Pressure
- psi: 3,600 (kPa: 24,821, bar: 248.2) - Max.
Power
- 100 mW
Process Connection Material
- 304 Stainless Steel
- 304L Stainless Steel
- 316 Stainless Steel
- 316L Stainless Steel
- Alloy 20 or Incoloy
- Carbon Steel (A333 GR.6, A335-P11 Chrome Moly, A335-P9)
- Hastelloy C
- Monel 400
Sensor, Probe Style
- Float
Switch Type
- DPDT
- SPDT
Temperature Range
- 649° C (1,200° F) - Max.
Trim Material
- 316 Stainless Steel
- 400 Series Stainless Steel
Welded Connection
- 1” Socket Weld End
- 1-1/2” Socket Weld End
- 2” Socket Weld End
- Indirect mount is required because tank cannot be easily shutdown for service
- When turbulence is high enough to cause false readings/damage to the displacer
- Flanged service connection for maintenance, cleaning, or troubleshooting