LTR53 Radar Level Sensor

Brand: Intempco Controls, Inc.

When the LTR53 series radar is turned ON in a system having a clean separation between oil and water (no water droplets in the oil) , the radar gets a reflection from the oil-water interface that gives current output proportional to the oil-water interface level.

The echo from the oil-water interface is masked and the radar is forced to go to higher power to detect echo from top of oil.

The output current alternates between oil level and oil-water interface level. Special parameter in software changes alternating time between the two level output signals.

If water is present in the oil the radar does not penetrate oil and shows the current output proportional to the top of oil.

When heat is applied and separation happens the radar starts showing two current values; one from top of oil and another one from oil-water interface.
Features
  • Explosion proof for Class I, Division 1, Groups B, C, D
  • Self adjusting tracking radar ideal for oil-water interface detection
  • Programmable calibration
  • Output 4-20 mA/20-4 mA
  • Output sequences between interface level and oil level
  • Optional RS232, RS485 for communications with calibration, diagnostics and data logging software
  • PLC compatible (Modbus RTU)
  • 3-wire DC

Specifications

Accuracy

  • ± 0.1 % of, Maximum
  • ± 0.25 % of, Maximum
  • Loop Powered Display: ± 0.5 % of Reading

Approvals & Certifications

  • FCC Part 15 - Low Power Communication Device

Calibration

  • Via Communication Software Provided with Units

Class

  • Installation Category: Class II

Communication

  • Modbus RTU
  • RS-232
  • RS-485

Conduit Connection

  • Conduit Entry: 1/2" NPT

Cover Material

  • Threaded Wiring Access Cover: Aluminum
  • Threaded Wiring Access Cover: Stainless Steel

Diagnostics

  • (Echo Profile) Via Communications Port

Display

  • Head Mounted LCD Display
  • Loop Powered Display: 4-1/2-Digit LCD 1/2" High

Enclosure, Body Material

  • Aluminum
  • Stainless Steel

Environmental Protection

  • Explosion-proof for Class I, Division 1, Groups B, C, D
  • IP67
  • NEMA 6

Frequency

  • 5.8 to 6.3 GHz

Humidity

  • 0 to 95 % Non-Condensing

Length

  • Antenna Extension: 6" (150 mm) with Teflon Antennas Only
  • Antenna Extension: 8" (203.2 mm) with Teflon Antennas Only

Materials of Construction

  • Antenna: Polypropylene Rod
  • Antenna: Teflon Rod
  • Horn Antenna: 316L Stainless Steel

Measuring Range

  • 17 to 240 feet (5 to 73 metres)
  • Measure Interface: 5" (127 mm)

NPT Connection

  • 1-1/2" NPT Male
  • 2" NPT Male
  • 3" NPT Male

Output

  • 20-4 mA
  • 3-Wire with 12-30 Vdc Power
  • 4-20 mA

Power

  • Transmit: 50 µW Average

Power Supply

  • 12-30 Vdc, 0.07 A, Maximum

Pressure Range

  • bar: 0 to 5
  • kPa: 0 to 500
  • psi: 0 to 72.52

Principle of Operation

  • Pulse Radar

Process Temperature

  • De-Coupler & PTFE Rod: -40° to 204° C (-40° to 400° F)
  • PP Rod: -40° to 60° C (-40° to 140° F)

Range

  • Loop Powered Display: 3.5-22 mA

Resolution

  • ± 0.079" (2 mm)
  • 0.08 to 1.06" (2 to 26 mm)
  • Output: 6.1 µA

Response Time

  • Fast Protocol Unit: 10 to 30 Echo’s/second
  • Standard Unit: 2 to 3 Echo's/second
  • Standard with Less Damping: 6 Echo's/second

Temperature Range

  • -40° to 60° C (-40° to 140° F)

Voltage Drop

  • Loop Powered Display: 0.95 V at 20 mA

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