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Kayden CLASSIC 812 Thermal Flow, Level & Interface Switch
Kayden-CLASSIC-812-flameproof-area-flow-level-interface-switch.png

Kayden CLASSIC 812 Thermal Flow, Level & Interface Switch

Brand: Kayden Instruments

Kayden-CLASSIC-812-hazardous-area-flow-level-interface-switch.png Kayden-CLASSIC-812-hazardous-area-flow-level-inteface-sensor.png Kayden-CLASSIC-812-Flanged-hazardous-area-flow-level-interface-switch.png Kayden-CLASSIC-812-flameproof-area-flow-level-interface-electronics-module-mounting.png
The Kayden CLASSIC 812 Flow, Level, Interface Switch & Transmitter features a precision-welded, highly accurate stainless steel sensor.
 
Ideal for liquids, gases, and slurries in a clean or dirty process, the CLASSIC 812 is available in a wide range of flange sizes and insertion lengths. Kayden's electronic thermal dispersion flow and level switches have no moving parts to foul, clog, or stick, resulting in exceptional reliability and requiring little to no maintenance.
 
The CLASSIC 812 is available with a Raised Face or RTJ flange in a wide range of flange sizes, ANSI ratings, and customer-specified insertion lengths. All Kayden models feature a rugged flameproof enclosure with blind or lens covers available.
 
  • Process Connection
    • Raised Face or RTJ Flange
  • Adjustable Set Point Range
    • 0 - 254 feet/s
    • 0 - 77 metres/s
  • Insertion 'U' Length
    • inch 2.5" to 120" in 1/2"  increments
    • cm 6.4 to 305 in 1 cm increments
  • Input Power
    • 12-24 Vdc & 115-230 Vac, 50-60 Hz
  • Operating Pressure - Maximum
    • Per Flange Rating, ASME B16.5
  • Temperature Range - Sensor
    • -55° to 200° C
    • -67° to 392° F
  • Local Enclosure
    • Aluminum Flameproof
    • 1" Female NPT Conduit Connection
  • Local Enclosure Cover
    • Blind or Glass Lens, Flameproof
  • Wetted Materials
    • 316/316L Stainless Steel
    • Other Materials Available
  • Outputs/Communications
    • Two Independent Relays - SPDT
    • 4-20 mA
    • Modbus
    • Rated 120 Vac max, 30 Vdc max, 4 A max
  • Approvals
    • CSA
    • CRN
    • Single Seal
    • NACE
    • NEMA 4, 4X, 6P, IP65/67

Specifications

Brand

Applications

  • Flow
  • Level
  • Interface

Principle of Operation

  • Thermal, Calorimetric

Sensor, Probe Style

  • Insertion Flanged

Insertion 'U' Length - Custom

  • 6.4 cm to 305 cm (in 1 cm increments)
  • 2.5" to 120" (in 1/2" increments)

Flange Type

  • RF - Raised Face
  • RTJ - Ring Typical Joint

Flange Class

Flange Size

Flange Material

Wetted Materials

Sensor Construction

Operating Pressure Maximum - Sensor

Operating Temperature - Sensor

Operating Temperature - Electronics

Switch Point Range

Response Time

Accuracy

Switch Type

Input Power

Output

Communication

Approvals & Certifications

Electronics - Standard Features

Remote Control & Monitoring Software

Environmental Protection

Local Enclosure Conduit Connection

Local Enclosure & Cover Material

Local Enclosure Cover

Local Enclosure & Cover Finish

Remote Electronics Enclosure Cover

Remote Electronics Enclosure & Cover Finish

Storage Temperature

Documentation

Data Sheets

  • Data Sheet - Kayden CLASSIC 800 Technical Specifications Sheet pdf 325 KB
  • Data Sheet - Kayden CLASSIC 812 Threaded pdf 340 KB

Product Manuals

  • Product Manual - Kayden Classic 800 Flow to Velocity Quick Reference Guide pdf 5.8 MB
  • Product Manual - Kayden CLASSIC 800 Modbus Registers pdf 116 KB
  • Product Manual - Kayden CLASSIC 800 Quick Setup Guide v5.6 pdf 1.5 MB
  • Product Manual - Kayden CLASSIC 800, Feb 2025 pdf 17.4 MB

Application Considerations

  • Application Consideration - Kayden Process Conditions pdf 430 KB

Application Notes

  • Application Note - Kayden 4-20mA Analog Output pdf 815 KB
  • Application Note - Kayden Acid Level Detection pdf 1,022 KB
  • Application Note - Kayden Fail Safe pdf 801 KB
  • Application Note - Kayden High Level Detection Holding Tank pdf 572 KB
  • Application Note - Kayden Leak Detection pdf 1.2 MB
  • Application Note - Kayden Monitoring Digester Flow pdf 410 KB
  • Application Note - Kayden Oil Water Separation pdf 923 KB
  • Application Note - Kayden Pulp and Paper Digester Tank pdf 810 KB
  • Application Note - Kayden Pulp and Paper Skimmer Tank pdf 408 KB
  • Application Note - Kayden Pump Monitoring and Protection pdf 898 KB
  • Application Note - Kayden Pump Monitoring and Protection Remote pdf 880 KB

Catalogs

  • Catalogs - Kayden CLASSIC 800 Brochure pdf 3.8 MB
  • Catalogs & Brochures - Kayden CLASSIC 800 Series Features pdf 96 KB
  • Catalogs & Brochures - Kayden CLASSIC 800 Series Overview pdf 304 KB

Certifications & Approvals

  • Certifications & Approvals - Kayden 800 CLASSIC CSA 2023 pdf 155 KB

Outline Drawings

  • 2021 Outline Dimension Drawing - Kayden CLASSIC 812 Local Enclosure Raised Face pdf 244 KB
  • 2021 Outline Dimension Drawing - Kayden CLASSIC 812 Remote Enclosure Raised Face pdf 619 KB
  • Legacy Outline Dimension Drawing - Kayden CLASSIC 812 Local Enclosure Raised Face pdf 296 KB
  • Legacy Outline Dimension Drawing - Kayden CLASSIC 812 Remote Enclosure Raised Face pdf 701 KB

Software

  • Kayden RCMS Software Rev 7.2.0 zip 45.0 MB

Wiring Diagrams

  • Wiring Diagrams - Kayden CLASSIC 800 Integral Electronics pdf 1.9 MB
  • Wiring Diagrams - Kayden CLASSIC 800 Remote Electronics pdf 292 KB
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