RADAR Level Transmitters

RADAR Level Transmitters non-contact level measurement of fluids in a metal tank

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Radar Level Transmitters offer reliable non-contact, maintenance free continuous measurement of liquids inside metal tanks or vessels. Designed to operate in environments with more extreme process conditions, such as in a vacuum, high pressure, high temperature, foam, vapor or other gases that would normally interfere with ultrasonic type sensors. Perfect for use with corrosive liquids, thick fluids, slurries or other applications where direct contact with the media would not be desired. Low dielectric feature allows for operations in liquids with dielectric constants of 2 or greater. Broad range of models and options available to meet a wide variety of applications.


Babbitt Pulse Radar Level Transmitters operate on the Time-of-Flight principle. The microprocessor-controlled electronics transmit an electromagnetic pulse down to the fluid surface. The media reflects the signal and the time of flight is measured and converted into an output signal, which can then be sent to a display, PLC or other controller.

Proprietary software senses and analyzes the amplitude and shape of received echoes. This enables the units automatic gain control to track the process level as well as help eliminate echoes from unwanted obstructions. Low Dielectric Mode allows for use in liquids with dielectric constants of 2 or greater. Setup and commissioning are quick and easy. Calibration can be performed using the single push button or via the factory provided software. The Gateway software enables diagnostics, data logging and advanced calibration settings not accessible via the push button.



  • 4-20mA or 20-4mA output
  • Unaffected by vapors or fumes
  • Smart Sensor technology keeps beam narrow
  • Simple configuration via push button or Gateway software
  • Low Dielectric Mode for measurement of non-conductive liquids
  • Non-volatile memory-batteries not required
  • PLC compatible (Modbus RTU)
  • Optional communication – RS232, RS485 or HART


  • Water/Wastewater
  • Food/Beverage
  • Petrochemical/Chemical
  • Oil and Gas
  • Paint and Pigment
  • Bulk Liquid Storage
  • Marine
  • Flammable/Corrosive Liquid Storage


  • Liquids with foam, gases (CO2,methane) and other fumes
  • Highly corrosive liquids such as acids and solvents
  • High temperature applications up to 350F such as asphalt
  • Slurries
  • Acids, Caustics and Solvents
  • Vacuum applications
  • Diesel crude oil
  • Sanitary applications
  • Oil-water interface monitoring and detection



Power: 115VAC/60Hz, 230VAC/50Hz, 12-30VDC or 2 Wire Loop Power
Output: 4/20mA or 20/4mA, 6.1uA resolution 750 ohms, isolated on AC supply
Fuse: 0.125A/250V type 2AG


Process Entry: 2” NPT
Conduit Entry: ½”NPT
Antenna: Teflon
Enclosure: (Standard) Aluminum; (Optional) Stainless Steel
Ingress Protection: NEMA 6 (IP68)


-40 F to 140 F (Electronics)
-40 F to 250 F (Teflon Ant.)
-40 F to 350 F (Teflon Ant. And Teflon De-Coupler)

Pressure: (Standard) 75 PSI Max. (Optional) 1000 PSI – 70 bar – without de-coupler

Approvals: (Standard) FM (USA) FM3810 (2005) ANSI/NEMA 250 (1991)
FM (CAN.) CSA C22.2 No. 1010.1 (2004) CSA C22.2 No. 94 (2011)
(Optional) Explosion Proof FM & CSA for Can. & US Explosion Proof
Class I, Div.1, Groups B, C, D: Dust-Ignition Proof Enclosure for
Class II/III Div. 1, Groups E, F, G
FCC Part 15 – Low communication Device


Range: 17 to 240 feet -Depends on model
Accuracy: +/- 0.25% of maximum target range in air
Frequency: 6.3 GHz (other frequencies available upon request)
Transmitter Power: 50uW average
Lost echo hold time: 30 seconds/output 22mA

Industrial Technical Services from Mississauga, Ontario is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels.

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