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Kayden CLASSIC® 812 Flow, Level, Interface Switch & Transmitter

Brand: Kayden Instruments
The Kayden CLASSIC 812 Flow, Level, Interface Switch & Transmitter features a precision welded, highly accurate stainless steel sensor. Ideal for liquids, gases & slurries in a clean or dirty process.

The CLASSIC 812 is available with a Raised Face or RTJ Flange, in a wide range of flange sizes, ANSI ratings and insertion lengths. All Kayden models feature a rugged flameproof enclosure with blind or lens covers available. Kayden’s advanced digital electronics will revolutionize the way you monitor and control your process.

  • Process Connection
    • Raised Face or RTJ Flange
  • Adjustable Set Point Range
    • 0-254 feet/s, 0-77 meters/s
  • Insertion 'U' Length
    • Available in 1/2" or 1 cm increments
    • Min. 2.5" to Max. 120" (6.0 - 305 cm)
  • Input Power
    • 12-24 Vdc & 115-230 Vac, 50-60 Hz
  • Operating Pressure (Maximum)
    • Per Flange Rating, ASME B16.5
  • Temperature Range (Sensor)
    • -45° to 200° C, -50° 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, 4A max
  • Approvals
    • FM
    • CSA
    • CRN
    • Single Seal
    • NACE
    • NEMA 4X
show more
The Kayden CLASSIC 812 Flow, Level, Interface Switch & Transmitter features a precision welded, highly accurate stainless steel sensor. Ideal for liquids, gases & slurries in a clean or dirty process.

The CLASSIC 812 is available with a Raised Face or RTJ Flange, in a wide range of flange sizes, ANSI ratings and insertion lengths. All Kayden models feature a rugged flameproof enclosure with blind or lens covers available. Kayden’s advanced digital electronics will revolutionize the way you monitor and control your process.

  • Process Connection
    • Raised Face or RTJ Flange
  • Adjustable Set Point Range
    • 0-254 feet/s, 0-77 meters/s
  • Insertion 'U' Length
    • Available in 1/2" or 1 cm increments
    • Min. 2.5" to Max. 120" (6.0 - 305 cm)
  • Input Power
    • 12-24 Vdc & 115-230 Vac, 50-60 Hz
  • Operating Pressure (Maximum)
    • Per Flange Rating, ASME B16.5
  • Temperature Range (Sensor)
    • -45° to 200° C, -50° 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, 4A max
  • Approvals
    • FM
    • CSA
    • CRN
    • Single Seal
    • NACE
    • NEMA 4X
652 models matching criteria
812-RAA-141A-I0050-C1G0A-3E
KAYDEN CLASSIC Thermal Flow,Level,Interface Switch, Modbus, 2" 150# RF SST, 5"U, Lens, CSA/CRN
Available Add-Ons: Stainless Steel Tag
15 In Stock
Non-Cancellable / Non-Refundable
$1,906.61USD
Does not ship to US
812-RAA-142A-I0055-C1G0A-3E
KAYDEN CLASSIC Thermal Flow,Level,Interface Switch, Modbus, 2" 300# RF SST, 5.5"U, Lens, CSA/CRN
Available Add-Ons: Stainless Steel Tag
6 In Stock
Non-Cancellable / Non-Refundable
$2,009.30USD
Does not ship to US
812-RAA-141A-I0055-C1G0A-3E
KAYDEN CLASSIC Thermal Flow,Level,Interface Switch, Modbus, 2" 150# RF SST, 5.5"U,Lens,CSA/CRN
Available Add-Ons: Stainless Steel Tag
2 In Stock
Non-Cancellable / Non-Refundable
$1,920.35USD
Does not ship to US
812-RAA-142A-I0065-C1G0A-3E
KAYDEN CLASSIC Thermal Flow,Level,Interface Switch, Modbus, 2" 300# RF SST, 6.5"U, Lens, CSA/CRN
Available Add-Ons: Stainless Steel Tag
1 In Stock
Non-Cancellable / Non-Refundable
$2,037.60USD
Does not ship to US
812-RAA-142A-I0058-C1B0A-3E
KAYDEN CLASSIC Thermal Flow,Level,Interface Switch, Modbus, 2" 300# RF SST,5.8"U SST, Blind, CSA/CRN
Available Add-Ons: Stainless Steel Tag
In Stock 3 - 7 days
Non-Cancellable / Non-Refundable
$1,567.82USD
Does not ship to US
812-RAA-121A-I0025-C1B0A-1E
KAYDEN CLASSIC Thermal Flow,Level,Interface Switch, Modbus, 1" 150# RF SST, 2.5"U, Blind, CSA
Available Add-Ons: Stainless Steel Tag
In Stock 3 - 7 days
Non-Cancellable / Non-Refundable
$1,613.10USD
Does not ship to US
812-RAA-121A-I0020-C1G0A-3E
KAYDEN CLASSIC Thermal Flow,Level,Interface Switch, Modbus, 1" 150# RF SST, 2"U, Lens, CSA/CRN
Available Add-Ons: Stainless Steel Tag
In Stock 1 - 2 weeks
Non-Cancellable / Non-Refundable
$1,613.10USD
Does not ship to US
812-RAA-121A-I0030-C1B0A-1E
KAYDEN CLASSIC Thermal Flow,Level,Interface Switch, Modbus, 1" 150# RF SST, 3"U, Blind, CSA
Available Add-Ons: Stainless Steel Tag
In Stock 3 - 7 days
Non-Cancellable / Non-Refundable
$1,629.27USD
Does not ship to US
812-RAA-121A-I0030-C1B0A-3E
KAYDEN CLASSIC Thermal Flow,Level,Interface Switch, Modbus, 1" 150# RF SST, 3"U, Blind, CSA/CRN
Available Add-Ons: Stainless Steel Tag
In Stock 3 - 7 days
$1,629.27USD
Does not ship to US
812-RAA-131A-I0025-C1B0A-1E
KAYDEN CLASSIC Thermal Flow,Level,Interface Switch, Modbus, 1-1/2" 150# RF SST, 2.5"U, Blind, CSA
Available Add-Ons: Stainless Steel Tag
In Stock 3 - 7 days
Non-Cancellable / Non-Refundable
$1,657.57USD
Does not ship to US

Specifications

Accuracy

  • Flow Service: ± 1.0% of Set Point Velocity over Operating Range of ± 28° C (± 50° F)
  • Level Service: ± 0.64 cm (0.25")

Applications

  • Flow
  • Interface
  • Level

Approvals & Certifications

  • CRN
  • CRN - Canadian Registration Numbers - 1" & 1-1/2” - Flanges Approved for All Provinces & Territories 812-RAA Series : CRN # 0F13787.2C 316, 316L Stainless Steel, Pipe NPS 1/2" Schedule 80 Code of Construction: ASME B31.3, Maximum
  • CRN - Canadian Registration Numbers - 2" through 10" Flanges - Approved for All Provinces & Territories 812-RAA Series : CRN # 0F13773.2C 316, 316L Stainless Steel, Pipe NPS 3/4" Schedule 80 Code of Construction: ASME B31.3, Maximum
  • CSA
  • CSA - Local (Sensor) Enclosure Flameproof: Class I, Division 1, Groups B, C, D, Ex D IIB + H2 AEx D IIB + H2 (Class I, Zone 1, Group IIB + H2) Temperature Code: T3 Enclosure Typical 4, IP55 Single Seal Approved Per ANSI/ISA 12.27.01-2003
  • CSA - Remote Electronics Enclosure - Optional Flameproof: Class I, Groups B, C, D, Ex D IIB + H2 AEx D IIB + H2 (Class I, Zone 1, Groups IIB + H2) Temperature Code: T3
  • FM
  • FM - Local (Sensor) Enclosure Flameproof: Class I, Division 1, Groups B, C, D Temperature Codes: T2D (Ta=75° C), T3 (Ta=65° C) Class I, Zone 1, AEx D IIB + H2 Enclosure Typical 4/IP55
  • FM - Remote Electronics Enclosure - Optional Flameproof: Class I, Division 1, Groups B, C, D Temperature Codes: T2D (Ta=75° C), T3 (Ta=65° C) Class I, Zone 1, AEx D IIB + H2 Enclosure Typical 4/IP55

Communication

  • Modbus RTU Communication-Alarms, Flow Status & Diagnostics
  • RS-485 Using Kayden's Remote Control & Monitoring Software (RCMS) or other Modbus Compatible Software

Cover - for Local Enclosure

  • Blind Cover - Flameproof
  • Glass Lens Cover - Flameproof

Electronics - Standard Features

  • *Configurable only from the Kayden RCM Software
  • 100% Digital Design. Electronics are Environmentally Sealed
  • 4-Adjustable Independent Switch Point Timers
  • Automated Redundant Self-Test Diagnostics
  • Display Panel Lock-Out*
  • Easy Setup: No Mechanical Jumpers or Trim Pots
  • Incrementally Adjustable Heater Power (5% Steps) with Automatic Over-Range Protection
  • Intelligent User Interface with Push-Button & Constant Display of Operation (Flow/Level)
  • Start-Up Bypass Timer
  • Temperature Compensation
  • Temperature Mode*: Process Temperature may be Displayed/Graphed in Flow/Level Mode

Enclosure Finish

  • Powder-Coated Polyester TGIC

Enclosure, Body Details

  • 1" NPT Female Conduit Connection
  • Buna-N O-Ring on Cover

Enclosure, Body Material

  • Copper-Free Aluminum (Does Not Exceed 0.4% Copper)

Environmental Protection

  • IP55
  • NEMA 4 / IP55

Flange Material

  • 316, 316L Stainless Steel
  • Other Exotic Metals Available

Flange Size - 1" (DN25)

  • 1" (DN25) - 150#
  • 1" (DN25) - 300#
  • 1" (DN25) - 600#

Flange Size - 10" (DN250)

  • 10" (DN250) - 150#
  • 10" (DN250) - 300#
  • 10" (DN250) - 600#

Flange Size - 1-1/2" (DN40)

  • 1-1/2" (DN40) - 150#
  • 1-1/2" (DN40) - 300#
  • 1-1/2" (DN40) - 600#

Flange Size - 2" (DN50)

  • 2" (DN50) - 150#
  • 2" (DN50) - 300#
  • 2" (DN50) - 600#

Flange Size - 3" (DN80)

  • 3" (DN80) - 150#
  • 3" (DN80) - 300#
  • 3" (DN80) - 600#

Flange Size - 4" (DN100)

  • 4" (DN100) - 150#
  • 4" (DN100) - 300#
  • 4" (DN100) - 600#

Flange Size - 5" (DN125)

  • 5" (DN125) - 150#
  • 5" (DN125) - 300#
  • 5" (DN125) - 600#

Flange Size - 6" (DN150)

  • 6" (DN150) - 150#
  • 6" (DN150) - 300#
  • 6" (DN150) - 600#

Flange Size - 8" (DN200)

  • 8" (DN200) - 150#
  • 8" (DN200) - 300#
  • 8" (DN200) - 600#

Flange Type

  • Raised Face (RF)
  • RTJ - Ring Typical Joint

Input Power

  • 12-24 Vdc, 120-240 Vac, 50/60 Hz
  • Power Consumption: Maximum
  • Universal Power Input

Insertion 'U' Length

  • Custom 'U' Lengths 2.5" to 120" (6.4 cm to 305 cm) Available in 1/2" (1.0 cm) Increments.

Operating Pressure - Sensor

  • Maximum

Operating Temperature - Electronics

  • -55° to 65° C (-67° to 149° F)

Operating Temperature - Sensor

  • -45° to 200° C (-50° to 392° F)

Output

  • 4-20 mA (Thermal Signal, Scaleable) Rates 120 Vac, Maximum

Principle of Operation

  • Thermal, Calorimetric

Remote Control & Monitoring Software

  • Adjust Relay Modes
  • Adjust Set Points 1 & 2
  • Load or Save User Settings
  • Lock or Unlock the Display Panel to Protect the Settings
  • Many Other Adjustable Features
  • Modify Heater Settings to Optimize Response Time
  • Monitor Operating Status
  • Operated Via a Personal Computer Locally or from a Remote Control Center
  • Visualize the Actions of the Process Via the Graphical Display

Remote Electronics Enclosure & Cover

  • Blind Cover - Flameproof
  • Glass Lens Cover - Flameproof

Response Time

  • Approximately 0.5 to 30 seconds

Sensor, Probe Style

  • Insertion

Storage Temperature

  • Product Should Be Stored in a Clean & Dry Environment between -30° & 60° C (-22° & 140° F)

Switch Point Range

  • Gases: 0.25 to 200 sfps, 0.08 to 60 SMPS - Standard Condition 21° C (70° F) at 14.7 psi (1 Atm)
  • Hydrocarbon-based Liquids: 0.01 to 5.0 FPS, 0.003 to 1.50 MPS
  • Water-based Liquids: 0.01 to 3.00 FPS, 0.003 to 0.9 MPS

Switch Type

  • 2 SPDT Sealed Relay Contacts Rated @ 4 Amps Resistive 230 Vac or 30 Vdc, Maximum

Wetted Materials

  • 316, 316L Stainless Steel
  • All-Welded Construction
  • Hastelloy® C-276
  • Other Metals Available
  • Titanium Grade 2

Typical Applications

Flow
  • Ammonia Storage
  • Biogas Flow
  • Catalysis Vessels
  • Chemical Injection & Additive Flow Monitoring
  • Chemical Reactors
  • Chlor-alkali Processes
  • Compressors
  • Condensers
  • Deionization Tanks
  • Digester Gas Flow
  • Distillation Columns
  • Drain Line Flow
  • Emergency Eye Wash & Shower Stations
  • Fermentation Vessels
  • Flare Gas Monitoring
  • Flare Knock-out Drums
  • Flow Monitoring & Verification
  • Heat Exchangers
  • Heat Recovery Steam Generator (HRSG) – Power & Utilities
  • High Pressure Flows
  • Leak Detection
  • Lube Oil Systems
  • Monitoring Purge Air Flow
  • Natural Gas to Boilers
  • Pumps
  • Reboilers
  • Refinery Flow Applications
  • Relief Valve & Rupture Disk Flow Monitoring
  • Remote Indication of Flow via Analog Output & Digital Communications
  • Pump Protection - Dry Alarm
  • Tank Blanketing
  • Tank Overflow Protection
  • Tanker Loading & Unloading
  • Water & Wastewater
  • Vaporizers
  • Vent Monitoring
Level
  • Biogas Dehydration
  • Blending Operations
  • Carbon Slurry Level
  • Compressor Scrubber
  • Compressor Waste Liquid
  • Condensate Receiver Tanks
  • Cooling Tower Basins
  • Crude Desalting
  • Crude Dehydration
  • Deionization Tanks
  • Digester Blow Tanks
  • Free Water Knock-out Tanks – High, Low and Interface Level
  • Geothermal - Degasser Tanks
  • Geothermal - Steam & Brine Separators
  • Leak Detection (Accumulation Reservoir)
  • Lime Slurry Level
  • Mixing & Blending Systems
  • Oil Separators & Treaters – High, Low & Interface Level
  • Production Fluid Storage
  • Pulp Bleaching Towers
  • Pulp Digesters
  • Pulp Storage
  • Pulp Washing Systems
  • Sampler Systems
  • Sand Separators
  • Scrubber Vessels
  • Storage Tanks
  • Sumps - All Types of fluids: Water, Oil, etc.
  • Surge Tanks
  • Tank Overflow
  • Turpentine Recovery
  • Vapor & Liquid Separation
  • Vapor Recovery
Interface
  • Crude Desalting
  • Interface Control in Separation Vessels
  • Interface Detection
  • Interface Control & Level Detection in Settling Vessels
  • Liquid-liquid Extraction - LLX
Media
  • Liquids, Air & Gases
  • Slurries
  • Corrosive Liquids
Areas
  • Flameproof, Hazardous & General-Purpose Areas

>    IDEAL PROCESS CONDITIONS FOR FLOW    <

Liquids
  • Consistent Process Composition & Temperature
  • Sufficient Straight Run Flow Profile (minimizes turbulence)
  • Recommended Minimum of 5 Pipe Diameters from any Disturbance
Air & Gas
  • Consistent Process Composition & Temperature
  • Sufficient Straight Run Flow Profile (minimizes turbulence)
  • Clean and Dry
Slurries
  • Consistent Process Composition & Temperature
  • Sufficient Straight Run Flow Profile (minimizes turbulence)
Emulsion
  • Consistent Process Composition & Temperature
  • Sufficient Straight Run Flow Profile (minimizes turbulence)

>    UNDESIRABLE PROCESS CONDITIONS FOR FLOW    <

Liquids
  • Inconsistent Process Composition or Temperature
  • Insufficient Straight Run
  • Aerated Fluids
  • Turbulence
Air & Gas
  • Inconsistent Process Composition or Temperature
  • Wet or Saturated Air & Gas
Slurries
  • Inconsistent Process Composition or Temperature
  • Insufficient Straight Run
  • Aerated Fluids
  • Turbulence
Emulsion
  • Inconsistent Process Composition & Temperature
  • Insufficient Straight Run
  • Aerated Fluids
  • Turbulence
Solids
  • Dry granulated processes are NOT good candidates for thermal switches