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Description
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.
- 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 to 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)
- -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
- FM
- CSA
- CRN
- Single Seal
- NACE
- NEMA 4X
Inventory
Displaying price & availability for Virginia, United States in USD Change location or currency.
KAYDEN CLASSIC Thermal Flow,Level,Interface Switch, Modbus, 1-1/2" 150# RF SST, 7"U, Lens, FM
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- 812: Raised Face or RTJ Flange
- R: Sensor Temperature Range:
- -55°C to +200°C (-58°F to +392°F) Continuous Service
- A: Sensor Material: 316/316L Stainless Steel
- A: Process Connection: Raised Face
- 131: 1-1/2", 150 ANSI
- A Flange Material: 316/316L Stainless Steel
- I0070: Insertion "U"-Length: 7"
- C: Input Power: 12-24 VDC and 115-230 VAC, 50-60 Hz
- 1: Local Enclosure: Aluminum Flameproof, 1" FNPT
- G: Cover for Local Enclosure: Flameproof Glass Lens Cover
- 0A: Remote Electronics Enclosure & Cover: Not Required
- 9: Agency Approvals: FM, NACE, NEMA 4X
- E: Language: English
- Electronics Temperature Range:
- -55°C to 65°C (-67°F to 149°F)
- Outputs/Communications:
- Two Independent Relays (SPDT)
- 4-20 mA (Thermal Signal, Scalable)
- Modbus Communication via RS-485
- RCMS (Remote Control & Monitoring Software) Downloadable from
- Electronics - Standard Features:
- Automated Redundant Self-Test Diagnostics
- Display Panel Lock-Out
- Easy Set-up:
- No Mechanical Jumpers or Trim Pots
- Intelligent Push Button Interface
- Constant Display of Operation (Flow/Level)
- Start-Up Bypass Timer
In Stock
1 - 2 weeks
Non-Cancellable / Non-Refundable
$2,150.43USD
KAYDEN CLASSIC Thermal Flow,Level,Interface Switch, Modbus, 2" 300# RF SST, 5"U, Lens, CSA/CRN
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- Process Connection:
- 316 Stainless Steel Flanged
- Raised Face 2"
- ANSI: 300
- Adjustable Set Point Range: 0-254 feet/s, 0-77 meters/s
- Insertion 'U' Length: 5"
- Input Power: 12-24 VDC & 115-230 VAC, 50-60 Hz
- Operating Pressure (Maximum): Per Flange Rating, ASME B16.5
- Temperature Range (Sensor): -45°C to 200°C, -50°F to 392°F
- Local Enclosure: Aluminum Flameproof, 1" FNPT
- Cover: Flameproof Glass Lens Cover
- Remote Electronics Enclosure and Cover: Not Required
- Wetted Materials:
- 316 Stainless Steel
- Outputs/Communications:
- Two Independent Relays (SPDT)
- 4-20 mA (Thermal Signal, Scalable)
- Modbus Communication via RS-485
- RCMS (Remote Control & Monitoring Software) Downloadable from
- Electronics - Standard Features:
- Automated Redundant Self-Test Diagnostics
- Display Panel Lock-Out
- Easy Set-up:
- No Mechanical Jumpers or Trim Pots
- Intelligent Push Button Interface
- Constant Display of Operation (Flow/Level)
- Start-Up Bypass Timer
- c CSA us (UL Standards), CRN (Canada-wide), Single Seal, NACE, NEMA 4
In Stock
3 - 7 days
Non-Cancellable / Non-Refundable
$2,201.28USD
Configure
Specifications
Specifications
Brand
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, Max.
- 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, Max.
- CSA
- CSA - Local (Sensor) Enclosure Flameproof: Class I, Div. 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, Div. 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, Div. 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 - 1-1/2” (DN 40)
- 1-1/2” (DN 40) - 150#
- 1-1/2” (DN 40) - 300#
- 1-1/2” (DN 40) - 600#
Flange Size - 1” (DN 25)
- 1” (DN 25) - 150#
- 1” (DN 25) - 300#
- 1” (DN 25) - 600#
Flange Size - 10” (DN 250)
- 10” (DN 250) - 150#
- 10” (DN 250) - 300#
- 10” (DN 250) - 600#
Flange Size - 2” (DN 50)
- 2” (DN 50) - 150#
- 2” (DN 50) - 300#
- 2” (DN 50) - 600#
Flange Size - 3” (DN 80)
- 3” (DN 80) - 150#
- 3” (DN 80) - 300#
- 3” (DN 80) - 600#
Flange Size - 4” (DN 100)
- 4” (DN 100) - 150#
- 4” (DN 100) - 300#
- 4” (DN 100) - 600#
Flange Size - 5” (DN 125)
- 5” (DN 125) - 150#
- 5” (DN 125) - 300#
- 5” (DN 125) - 600#
Flange Size - 6” (DN 150)
- 6” (DN 150) - 150#
- 6” (DN 150) - 300#
- 6” (DN 150) - 600#
Flange Size - 8” (DN 200)
- 8” (DN 200) - 150#
- 8” (DN 200) - 300#
- 8” (DN 200) - 600#
Flange Type
- Raised Face (RF)
- RTJ - Ring Typical Joint
Input Power
- 12-24 Vdc, 120-240 Vac, 50/60 Hz
- Power Consumption: Max.
- 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
- -55° to 200° C, (-67° to 392° F)
Output
- 4-20 mA (Thermal Signal, Scaleable) Rates 120 Vac, Max.
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, Max.
Wetted Materials
- 316, 316L Stainless Steel
- All-Welded Construction
- Hastelloy C-276
- Other Metals Available
- Titanium Grade 2
Applications
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
Documentation
Documentation
Data Sheets
Product Manuals
- Product Manual - Kayden Classic 800 Flow to Velocity Quick Reference Guide pdf 6.2 MB
- Product Manual - Kayden CLASSIC 800, Nov 2022 pdf 17.6 MB
- Product Manual - Kayden Modbus Protocol Register Declarations for 800 Series pdf 116 KB
- Product Manual 0 Kayden Classic 800 quick setup guide v5.2.pdf 2.6 MB
Application Considerations
Application Notes
- Application Note - Kayden 4-20mA Analog Output pdf 766 KB
- Application Note - Kayden Acid Level Detection pdf 1.4 MB
- Application Note - Kayden Fail Safe pdf 894 KB
- Application Note - Kayden High Level Detection Holding Tank pdf 996 KB
- Application Note - Kayden Leak Detection pdf 1.5 MB
- Application Note - Kayden Monitoring Digester Flow pdf 831 KB
- Application Note - Kayden Oil Water Separation pdf 1.2 MB
- Application Note - Kayden Pulp and Paper Digester Tank pdf 1.1 MB
- Application Note - Kayden Pulp and Paper Skimmer Tank pdf 829 KB
- Application Note - Kayden Pump Monitoring and Protection pdf 1.0 MB
- Application Note - Kayden Pump Monitoring and Protection Remote pdf 1.2 MB
Catalogs
Certifications & Approvals
Outline Drawings
- 2021 Outline Dimension Drawing - Kayden CLASSIC 812 Local Enclosure Raised Face pdf 284 KB
- 2021 Outline Dimension Drawing - Kayden CLASSIC 812 Remote Enclosure Raised Face pdf 770 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