CLASSIC 812 Flanged Switch and Transmitter
CLASSIC 812 Flanged Switch and Transmitter
The CLASSIC 812 switch and transmitter offers a flanged process connection. It is user configurable for flow, level, fluids interface, temperature applications, and is suitable for use in air, gases, water, liquids, and slurries. The CLASSIC 812 has several unique features that 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.
The patented design of the Kayden CLASSIC 812 provides the ultimate performance and features package for flow, level, interface, and temperature sensing. It combines precision welded, highly accurate sensors, extremely rugged enclosures, and advanced digital electronics. In addition, it offers failure resistance inherent in Thermal Dispersion technology with the performance and features usually reserved for much more expensive instrumentation.
- flanged process connections – 316/316L Stainless Steel sensor standard
- exotic alloys, custom ‘U’ lengths, and remote mounted electronics available
- digital microprocessor technology
- settings configurable by user for flow, level, interface, and temperature sensing
- no jumpers – all configurable options are stored in non-volatile memory
- FM Explosion-proof Class I, Div. 1, Groups B, C, & D
- CSA/ANSI UL Flameproof Class I, Div. 1, Groups B, C, & D
Description
The CLASSIC 812 Flow, Level, and Interface Switch and Transmitter features a precision welded, highly accurate stainless steel sensor. It’s ideal for liquids, gases, and slurries in clean or dirty processes. In addition, 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 also feature a rugged flameproof enclosure with blind or lens cover options. Its advanced digital electronics will revolutionize the way you monitor and control your process.
- easy setup; no jumpers or trim pots
- continuous self-test diagnostics with fault indicator
- temperature compensation
- universal power 12-24 VDC and 115-230 VAC standard
- two SPDT relays – independently adjustable
- 4-20 mA analog output
- smart heater function for power economy and increased heater life
- start-up bypass timer (for pump control)
Specifications of the Kayden CLASSIC 812 Switch and Transmitter
Process Connections
- raised face
- RTJ flange
Adjustable Set Point Range
- 0 to 254 feet/second (0 to 77 meters/second)
Insertion ‘U’ Lengths
- minimum 2.5 inches (6.0 cm) to maximum 120 inches (305 cm)
- custom lengths available by 1/2″ (1 cm) increments
Input / Supply Power for the CLASSIC 812 Switch and Transmitter
- 12-24 VDC
- 115-230 VAC
- 50-60 Hz
Operating Pressure (Maximum)
- per flange rating, ASME B16.5
Temperature Range (Sensor)
- -50 to 392˚F (-45 to 200˚C)
Local Enclosure
- flameproof aluminum
- 1″ FNPT conduit connection
Conduit Connection Cover
- flameproof: blind cover or glass lens
Wetted Materials
- 316/316L stainless steel
- other materials available
Outputs and Communications for the CLASSIC 812
- two independent relays (SPDT)
- 4-20 mA
- Modbus
- rated:
- 120 Vac max
- 30 Vdc max
- 4A max
Display Panel Indicators
- relay 1 and 2
- set point 1 and 2
- fault alarm
- run mode
- start-up bypass timer (for pump control)
- LED bar graph for flow rate, level, or interface indication
Configuration Mode Features
- adjustable sensitivity
- zero and span adjustment
- Modbus addressable
Approvals
Applications
Flow
- pump protection – dry alarm
- leak detection
- flow monitoring and verification
- tank overflow protection
- flare gas monitoring
- monitoring purge air flow
- lube oil systems
- vent monitoring
- natural gas to boilers
- emergency eye wash and shower stations
- drain line flow
- high pressure flows
- tanker loading and unloading
- relief valve and rupture disk flow monitoring
- remote indication of flow via analog and digital output communications
- chemical injection / additive flow monitoring
Level
- storage tanks
- oil separators and treaters – high, low, & interface level
- sumps – all types of fluids ( water, oil, etc. )
- free water knock-out tanks – high, low, and interface level
- leak detection (accumulation reservoir)
- tank overflow
- sampler systems
- sand separators
Interface
- control in separation vessels
- detection
- control and level detection in settling vessels
Media
- liquids, air, and gases
- hazardous area and general-purpose areas
- slurries
- corrosive liquids
Process Conditions for the CLASSIC 812 Flow, Level, and Interface Switch and Transmitter
| Flow | |
|---|---|
| Ideal Process Conditions | Undesirable Process Conditions |
|
Liquids
Air & Gas
Slurries
Emulsion
|
Liquids
Air & Gas
Slurries
Emulsion
Solids
|
| Level | |
| Ideal Process Conditions | Undesirable Process Conditions |
|
Liquids
Slurries
Emulsion
|
Liquids
Slurries
Emulsion
Solids
|
| Interface | |
| Ideal Process Conditions | Undesirable Process Conditions |
|
Liquid to Liquid
Air or Gas to Liquid
Emulsion
|
Liquid to Liquid
Air or Gas to Liquid
Emulsion
Solids
|
Product Documents
- Data Sheet - CLASSIC 812 Flanged
- Data Sheet - Kayden CLASSIC 800 Series
- Brochure - CLASSIC 800 Series
- Quick Setup Guide - CLASSIC 800 Series
- Manual - CLASSIC 800 Series
- Quick Reference Guide - Flow to Velocity
- Modbus Protocol Register Declarations
- Process Condition Considerations
- Wiring Diagram - Integral Electronics
- Wiring Diagram - Remote Electronics
- Certificates and Approvals - CSA 2015
- Certificates and Approvals - FM 2005
