Kayden CLASSIC 810 Thermal Flow, Level, Interface Switch & Transmitter

Brand: Kayden Instruments

The Kayden CLASSIC 810 Flow, Level, Interface Switch & Transmitter features a precision-welded, highly accurate stainless steel sensor. Alarms and trip-points are field-configurable for flow, temperature, high or low, hysteresis, time delay, and more.

Ideal for liquids, gases, and slurries in a clean or dirty process, the CLASSIC 810 is available in a wide range of thread 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.

With no moving parts and minimal invasiveness, Kayden's thermal flow and level switches provide a highly repeatable, accurate, low cost of ownership, long life, and easy-to-install solution for demanding air, gas, liquid, and slurry applications.

All Kayden® CLASSIC® models feature a rugged flameproof enclosure with blind or glass lens covers. Kayden’s advanced digital electronics will streamline the way you monitor and control your process.

  • Process Connections - Male NPT
    • 1/2"
    • 3/4"
    • 1"
    • 1-1/4"
    • 1-1/2"
    • 2"
  • Adjustable Set Point Range
    • 0 to 254 feet/s
    • 0 to 77 meters/s
  • Insertion 'U' Lengths
    • 1.2" (3.0 cm)
    • 2" (5.0 cm)
    • 3" (7.5 cm)
    • 4" (10.1 cm)
    • 6" (15.2 cm)
    • 9" (22.8 cm)
    • 12" (30.4 cm)
    • 18" (45.7 cm)
    • Custom Lengths from 2.5" to 120" (6.0 cm to 305 cm) by 1/2" (1 cm) increments
  • Input/Supply Power
    • 12-24 Vdc & 120-240 Vac, 50-60 Hz
  • Operating Pressure - Maximum
    • CSA - Canadian Standards Association
      • psi 3,480
      • kPa 24,000
      • bar 240
    • CRN - Canadian Registration Number 0F22124.2C for 316/316L Stainless Steel
      • psi 1,990
      • kPa 13,721
      • bar 137.2
  • Temperature Range - Sensor
    • -55° to 200° C
    • -67° to 392° F
  • Local Enclosure
    • Aluminum Flameproof
    • 1" Female NPT
  • Local Enclosure Cover
    • Blind or Glass Lens
    • Flameproof
  • Wetted Materials
    • 316/316L Stainless Steel
    • Titanium
    • Hastelloy C-276
  • 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
    • ASME BPVC Sec. VIII Div. 1
    • NEMA 4, 4X, 6P, IP65/67
Features
  • Detects minimum flow and the presence and absence of flow
  • Temperature compensation to provide repeatable alarm under varying process temperatures
  • Continuous diagnostics detect sensor fault
  • Non-linear mA output signal can be used for trending, diagnostics, repeatable flow and level indication
  • Simple calibration and installation
  • Excellent low-flow sensitivity
  • Window to view alarm status
  • Integral or remote electronics
  • NACE construction

47 models matching criteria
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 1 - 2 weeks
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 2 - 5 days
 
Add-Ons Factory Set Switch Point, 90-1020, Stainless Steel Tag
In Stock 1 - 2 weeks
Non-Cancellable / Non-Refundable

Specifications

Applications

  • Flow
  • Interface
  • Level

Principle of Operation

  • Thermal, Calorimetric

Sensor, Probe Style

  • Insertion Threaded

NPT Connection

  • 1” NPT Male
  • 1/2” NPT Male
  • 1-1/2” NPT Male
  • 1-1/4” NPT Male
  • 2” NPT Male
  • 3/4” NPT Male

Insertion 'U' Length

  • Custom Lengths from 2.5” to 120” (in 1/2” increments)
  • Custom Lengths from 6.4 cm to 305 cm (in 1 cm increments)
  • 1.2” (3 cm)
  • 12” (30 cm)
  • 18” (46 cm)
  • 2” (5 cm)
  • 3” (7.5 cm)
  • 4” (10.1 cm)
  • 6” (15.2 cm)
  • 9” (23 cm)

Wetted Materials

  • 316, 316L Stainless Steel
  • Hastelloy C-276
  • Titanium

Operating Pressure - Sensor

  • CRN - All Process Connections: Max. Working Pressure: 1990 psi (13.72 MPa), Material: 316/316L Stainless Steel
  • CRN - Canadian Registration Number: 0F22124.2C
  • CSA - All Process Connections: Max. Working Pressure: 3481 psi (24 MPa)

Operating Temperature - Sensor

  • -55° to 200° C
  • -67° to 392° F

Sensor Construction

  • All-Welded Construction

Operating Temperature - Electronics

  • -55° to 65° C
  • -67° to 149° F

Switch Point Range

  • Air & 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

Response Time

  • Approximately 0.5 to 30 seconds

Accuracy

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

Switch Type

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

Input Power

  • 12-24 Vdc, 120-240 Vac, 50/60 Hz
  • Power Consumption: 6 Watts Max. Fully Configured
  • Universal Power Input

Output

  • 4-20 mA (Thermal Signal, Scaleable) 120 Vac, Max.

Communication

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

Approvals & Certifications

  • CRN - 316, 316L Stainless Steel - Canadian Registration Number 0F22124.2C: MWP 1990 psi, 13,720 kPa, 137 bar
  • 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

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 dDisplayed/gGraphed in Flow/Level Mode

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

Environmental Protection

  • IP55
  • IP67
  • NEMA 4X

Local Enclosure Conduit Connection

  • 1” NPT Female Conduit Connection

Local Enclosure & Cover Material

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

Local Enclosure Cover

  • Buna-N O-Ring on Cover
  • Blind Cover - Flameproof
  • Glass Lens Cover - Flameproof

Local Enclosure & Cover Finish

  • Powder-Coated Polyester TGIC

Remote Electronics Enclosure Cover

  • Glass Lens Cover - Flameproof

Remote Electronics Enclosure & Cover Finish

  • Powder-Coated Polyester TGIC

Storage Temperature

  • Store in a clean & dry environment between -30° & 60° C (-22° & 140° F)

Process Media Applications 
  • Air and Gases
  • Liquids
  • Slurries

Flow
  • Ammonia Storage
  • Biogas Flow
  • Catalysis Vessels
  • Chemical Injection & Additive Flow Monitoring
  • Chemical Reactors
  • Chlor-alkali Processes
  • Compressors
  • Condensers
  • Cooling Water
  • 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
  • Oil Well System Testing
  • Pumps
  • Reboilers
  • Refinery Flow Applications
  • Relief Valve & Rupture Disk Flow Monitoring
  • Remote Indication of Flow via Analog Output & Digital Communications
  • Pump Protection - Dry Alarm
  • Safety Spray Nozzle Monitoring
  • 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, Air, Gases, Slurries & Emulsion
  • Consistent Process Composition & Temperature
  • Sufficient Straight Run Flow Profile (minimizes turbulence)
  • Recommended Minimum of 5 Pipe Diameters from any Disturbance


Air & Gas

  • Clean and Dry

UNDESIRABLE PROCESS CONDITIONS FOR FLOW

Liquids, Air, Gases, Slurries & Emulsion
  • Inconsistent Process Composition or Temperature
  • Insufficient Straight Run
  • Aerated Fluids
  • Turbulence

Air & Gas
  • Wet or Saturated Air & Gas

Solids

  • Dry granulated processes are NOT good candidates for thermal switches

Kayden's CLASSIC 800 Series thermal flow, level, and interface switches and transmitters detect and monitor the flow rate or level/interface of a liquid or gas in a system based on the principle of thermal dispersion or thermal differential.

The CLASSIC 800 Series operates by measuring the amount of heat carried away by the process media as it moves past a heated temperature sensor, compared to a reference sensor that measures the ambient temperature of the process media. The difference in temperature between these two sensors is used to determine the flow rate, interface, or point-level condition.
Kayden calorimetric flow and level switches, also referred to as thermal flow monitors or level monitors function as follows:

Heating Element
The thermal switch has a heating element (or sensor) that is warmed to a certain temperature above the process media's temperature.

Temperature Sensors 
Alongside the heating element, the device includes temperature sensors. One sensor measures the temperature of the heated element, while another measures the ambient temperature of the process media.

Flow Detection 
When there is no flow or the flow is below a certain threshold, the temperature differential between the heated sensor and the ambient process media is more significant. As the flow rate increases, the process media carries away more heat from the heated sensor, reducing the temperature difference between the heated element and the reference element.

Level Detection 
If the level of the process media rises and comes into contact with the heated probe, the probe cools down due to the increased heat dissipation caused by the cooler process media. Conversely, if the level drops and the probe is exposed to air, the probe's temperature rises because air's thermal conductivity is lower, and it dissipates less heat.

Signal Output 
The switch translates the temperature difference into an electrical signal that can trigger an alarm, activate a relay, or send a signal to a control system, indicating whether the flow rate is above or below a preset threshold.

Thermal flow and level switches are known for their simplicity, reliability, and the ability to work without moving parts, which minimizes maintenance and the risk of mechanical failure. Kayden's thermal switches are highly versatile and can be used in various applications, including cooling circuits, pump protection (to ensure there is flow in a system and prevent dry running), and process control in industries such as chemical manufacturing, pharmaceuticals, and food and beverage production.

Thermal level switches can be used for level detection in a wide range of applications, including overfill protection, and ensuring proper filling or emptying of tanks and containers. These monitors are suitable for use with various materials, including liquids and slurries, and can operate in challenging conditions, such as high pressure and temperature environments.

Kayden's thermal dispersion flow, level, and interface sensing technology provides accurate results to achieve highly reliable and repeatable setpoint detection in a wide range of demanding applications, all while providing a long service life.

Documentation

Outline Drawings

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