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 - 254 feet/s
0 - 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
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 displayed/graphed 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)
Media - A few examples
Air and Gases
Sour Gas
Sweet Gas
Liquids
Oils
Turpentine
Water
Slurries
Pulp
Process Media Applications
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
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
When 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, when 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.