Every CLASSIC 800 Series switch and transmitter is user configurable for flow, level, fluids interface, temperature applications and is suitable for use in air, gases, water, liquids, and slurries. The CLASSIC 800 Series has several unique features which make it the world’s most advanced thermal flow and level switch including: temperature mode, 4-20 mA outputs, Modbus, digital temperature compensation, automated self-test diagnostics, and a simple, intuitive user interface.
Patented Design
The CLASSIC 800 Series patented designs provide the ultimate performance and features package for flow, level, interface, and temperature sensing and combine precision welded, highly accurate sensors, extremely rugged enclosures and advanced digital electronics. The CLASSIC 800 Series combines the failure resistance inherent in Thermal Dispersion technology with the performance and features usually reserved for much more expensive instruments.
As the process travels over the tip of the sensor, the increased flow of the process reduces the temperature of the heated RTD. This reduced temperature difference between the two RTDs is monitored by the electronics and the switch changes state once the set point is reached. Ideal for flow and no-flow monitoring and verification:
| Air, gases, water, hydrocarbon-based liquids, viscous fluids, liquids with particulates and/or suspended solids and slurries | |||
| Pump Protection – Dry Alarm | Pipeline / Material Storage | Flare Gas Monitoring and Verification | Relief Valve & Rupture Disk Flow Monitoring |
| Purge Air Flow Monitoring | Emergency Eye Wash Stations and Showers | Tanker Loading & Unloading | Well Optimization |
| Leak Detection | Flare Gas Monitoring | Tank Overflow Protection | Lube Oil Systems |
| Vent Monitoring | Natural Gas to Boilers | Drain Line Flow | High Pressure Flows |
| Remote Indication of Flow via Analog Output & Digital Communications | Chemical Injection, Additive Flow Monitoring | ||
Ideal Process Conditions for Liquids, Air and Gas, Slurries, and Emulsions
In a dry to wet application the rising liquid level covers the sensor and disperses some of the heat from the heated RTD. This reduced temperature difference between the two RTDs is monitored by the electronics and the switch changes state at this set point. Ideal for level detection:
| Fast, Accurate and Repeatable at Low Flow Rates | Drain Line Flow | Lube / Seal Oil Systems | Tank Overflow Protection |
| High / Low Level Detection with particulates and/or suspended solids and slurries: water,hydrocarbon-based liquids, viscous fluids, other liquids | |||
| Process Tank Batching Control | Leak Detection (Accumulation Reservoir) | Oil Separators & Treaters – High, Low & Interface Level | Sumps – All Types of fluids ( Water, Oil, etc. ) |
| Free Water Knock-out Tanks – High, Low and Interface Level | Storage Tanks | Sampler Systems | Sand Separator |
Ideal Process Conditions for Liquids, Slurries, and Emulsions
Ideal Process Conditions for Liquids to Liquids, Air or Gas to Liquids, Emulsions
The Kayden RCM (Remote Communications and Monitoring) Software allows all the settings to be configured remotely and saved as a file, transmitted as an email attachment, and/or printed for future reference. The Kayden RCM Software includes the option of locking the CLASSIC 800 Series Display Panel to eliminate field adjustments or tampering.
Modbus allows multiple units to be connected to the same communications bus (via RS-485) and monitored simultaneously.
The CLASSIC 800 Series uses an advanced microprocessor to perform continuous self-test diagnostics on the electronics and the sensor elements. Any open or shorted connection will result in a FAULT indication that also deactivates all relays and disables the heater circuitry.
The CLASSIC 800 Series Display Panel features very bright LED indicators for easy viewing even in direct sunlight. An adjustable power-on Start-up Bypass Timer is accessible from the Display Panel for low flow alarm pump protection applications. This makes it possible to disable a pump on low flow and have it automatically restart after a predetermined time in the event of a power interruption. Four adjustable delay timers allow the introduction of repeatable time delay into the (set point) relay trip function. For example, in a pump protection application this function will shut down the pump after the switch sensor has gone “dry” for the pre-set time (delay) limit.
Relay 1: On steady when Relay 1 is energized
Relay 2: On steady when Relay 2 is energized
Fault: Indicates a self-test error or fault condition
Set Point 1: On steady when viewing Set Point 1
Set Point 2: On steady when viewing Set Point 2
Run Mode: Flashing when switch is operating
Bypass: Flashing when the Start-up Bypass Timer is active
Thermal Signal: Displays Thermal Signal
| CLASSIC 810 |
CLASSIC 812 |
CLASSIC 814 |
CLASSIC 816 |
CLASSIC 828 |
CLASSIC 830 |
CLASSIC 832 |
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| Process Connections |
1/2” to 2” MNPT Threaded |
Flanged | Flanged Retractable Packing Gland |
1” MNPT Threaded Retractable Packing Gland |
1” to 3” Sanitary Tri-Clamp |
3/4” FNPT (InLine) | Flanged (InLine) |
| Insertion “U” Lengths |
1.2”, 2”, 3”, 4”, 6”, 9”, 12”, 18” Standard (most models). Custom lengths available to 240” | ||||||
| Sensor Material |
316/316L Stainless Steel, Titanium Gr. 2, Hastelloy C-276 & Monel 400 |
304/316/ 316L Stainless Steel |
316/316L Stainless Steel c/w Nickel Braze |
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| Input Power |
Universal AC & DC | ||||||
| Power Consumption |
Maximum: 6.0 watts (fully configured) | ||||||
| Communication | RS-485 | ||||||
| Outputs | Two SPDT sealed relay contacts 4 amps resistive 230 VAC / 24 VDC Modbus via RS-485. 4-20 mA current loop |
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| Temperature Compensation |
Yes | ||||||
| Operating Temperature Sensor |
-50˚ to 392˚F | -50˚ to 320˚F | -50˚ to 392˚F | ||||
| Operating Temperature Electronics |
Continuous use: -67˚ to 167˚F | ||||||
| Self Test | Automated diagnostics performed on electronics and sensing elements | ||||||
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