Kayden InstrumentsThermal Products
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CLASSICtm 800 Series

Flow, Level, Interface & Temperature Switches

The CLASSIC Series for liquids, gases, air and slurries.

Industry leading features include: 4-20 mA Current Loop for Analog Monitoring, Universal Power Input (12-24 VDC; 115-230 VAC), Bypass Delay Timer for pump start-up, Adjustable Heater Power, and RS-485 Remote Communications provides for integration with centralized control systems. Free Remote Control & Monitoring (RCM) Software.

Field flexibility maximizes installation and operating productivity.

Remote Electronics



The CLASSIC 800 and BASIC+ 400 series are also available with remote electronics.

  • Where ambient temperatures exceed 160º F (71º C )
  • Where shock or high vibration are considerations
  • Where the electronics would be difficult to access
  • All sensor types, sizes and materials are available
  • Consult the factory if more than 200' of interconnecting cable is required

CLASSICtm Models:

810 Threaded Sensors
816 Retractable Threaded Sensors
821 Threaded Single Sensors
830 Threaded In-Line Sensors
828 Sanitary Flanged Sensors
812 Flanged Sensors
814 Retractable Flanged Sensors
823 Flanged Single Sensors
832 Flanged In-Line Sensors
Insertion Style:
CLASSIC 810

CLASSIC  810

  • Threaded Sensors
  • Process connections: 1/2", 3/4", 1", 1¼", 1½" & 2" MNPT
  • Insertion 'U' Lengths from 1.2" to 120"
  • 316L Stainless & Exotic Alloys
Configure Specifications
CLASSIC 812

CLASSIC  812

  • Flanged Sensors
  • Customer specified flanges
  • Insertion 'U' Lengths from 2.5" to 120"
Configure Specifications
CLASSIC 816

CLASSIC  816

  • Retractable Threaded Sensors
  • Process connection: 1" MNPT
  • Insertion 'U' lengths from 6" to 120"
  • 50 to 500 psi pressure rating
Configure Specifications
CLASSIC 814

CLASSIC  814

  • Retractable Flanged Sensors
  • Customer specified flanges
  • Insertion 'U' Lengths from 6" to 120"
Configure Specifications
CLASSIC 821

CLASSIC  821

  • Threaded Single Sensors
  • Flow and level only
  • Process connections: 1/4", 3/8", 1/2", 3/4", 1", 1¼", 1½" & 2" MNPT
  • Insertion 'U' Lengths from 2" to 120"
Configure Specifications
CLASSIC 823

CLASSIC  823

  • Customer specified flanges & insertion 'U' lengths
Configure Specifications
In-Line Style:
CLASSIC 830

CLASSIC  830

  • Threaded In-Line Sensors
  • Process connection: 3/4" FNPT
  • Optional Injection Tubes & Mounting Kits
Configure Specifications
CLASSIC 832

CLASSIC  832

  • Flanged In-Line Sensors
  • Customer specified flanges
  • Flange Face to Flange Face Lengths from 7" to 72"
Configure Specifications
Sanitary:
CLASSIC 828

CLASSIC  828

  • Sanitary Flanged Sensors
  • Flange sizes: 1" to 3.5"
  • Customer specified flanges
  • Insertion 'U' Lengths from 1.2" to 6"
Configure Specifications