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LTR51 Self-Adjusting “Smart” Radar Level Sensor
Brand: Intempco Controls, Inc
The LTR51 Series radar level sensors are designed for applications requiring non-contact level measurement, in which ultrasonic level measurement is not acceptable.
The LTR51 Series radar technology can be adjusted for variables such as materials to be measured, vessel configuration, and system interface.
These sensors are ideal when vapor, dust, or a foaming surface prevents ultrasonic-wave measurements.
The LTR51 Series radar sensors can detect the level under a layer of light dust or airy foam, but if the dust particle size increases, or if the foam or dust gets thick, they will no longer detect the liquid level.
Instead, the level of the dust or foam will be measured. Internal piping, deposits on the antenna, multiple reflections, or reflections from the wall can interfere with the proper operation of the radar sensor.
Other sources of interference are rat-holing and bridging of solids, as well as angled process material surfaces that can reflect the radar beam away from the receiver.
Features- Self adjusting tracking radar ideal for liquids
- Programmable (recommended) and simple push-button calibration
- Output 4-20 mA/20-4 mA (Isolated on 4-Wire model’s only )
- Optional RS232, RS485 for communications with calibration, diagnostics and data logging software
- Optional HART on 2-wire models
- PLC compatible (Modbus RTU)
- 2-wire DC loop-powered, 3-wire DC, or 4-wire isolated AC operation
1 - 1 of 1 Part Numbers
LTR51
- Supply Voltage - 115 Vac (± 20%), 1.7 VA
- Output - 4-20 mA/20-4 mA
- Measurement Range - 17 feet (5 meters)
- Enclosure Type - Aluminum, 1/2" NPT x 2 Conduit
- Process Connection - 1-1/2" Male NPT
- Communication - No Communication
- Antenna - Polypropylene Rod
- Options - Without Options
1 - 1 of 1 Part Numbers
Specifications
Brand
Accuracy
- ± 0.1 % of, Max.
- ± 0.25 % of, Max.
- Loop Powered Display: ± 0.5 % of Reading
Approvals & Certifications
- FCC Part 15 - Low Power Communication Device
Calibration
- Manual or Via Communications Port
Class
- Installation Category: Class II
Communication
- HART (2-Wire Only)
- Modbus RTU
- RS-232
- RS-485
Conduit Connection
- Conduit Entry: 1/2” NPT x 2
Cover Material
- Threaded Wiring Access Cover: Aluminum
- Threaded Wiring Access Cover: Stainless Steel
Display
- Head Mounted LCD Display
- Loop Powered Display: 4-1/2-Digit LCD 1/2” High
Enclosure, Body Material
- Aluminum
- Stainless Steel
Environmental Protection
- IP67
- NEMA 6
Frequency
- 5.8 to 6.3 GHz
Humidity
- 0 to 95 % Non-Condensing
Length
- Antenna Extension: 6” (150 mm) Only with Teflon Rod Antenna
- Antenna Extension: 8” (203.2 mm) Only with Teflon Rod Antenna
Load Resistance
- Power Supply: 750 ohms, Max.
Materials of Construction
- Antenna: Polypropylene Rod
- Antenna: Teflon Rod
- Horn Antenna: 316L Stainless Steel
Measuring Range
- 17 to 240 feet (5 to 73 metres)
NPT Connection
- 1-1/2” NPT Male
- 2” NPT Male
- 3” NPT Male
Output
- 20-4 mA
- 2-Wire with 16-30 Vdc Loop Powered
- 3-Wire with 12-30 Vdc Power
- 4-20 mA
Power
- Transmit: 50 µW Average
Power Supply
- 115 Vac (± 20 %), 1.7 VA
- 12-30 Vdc, 0.07 A, Max.
- 16-30 Vdc (Loop Powered) 0.07 A, Max.
- 230 Vac (± 20 %), 1.7 VA
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 177° C (-40° to 350° F)
- PP Rod: -40° to 60° C (-40° to 140° F)
Range
- Loop Powered Display: 3.5-22 mA
Resolution
- 0.08 to 1.06” (2 to 26 mm)
- Output: 6.1 µA
Temperature Range
- -40° to 60° C (-40° to 140° F)
Voltage Drop
- Loop Powered Display: 0.95 V at 20 mA
- Animal Fat Under High Temperature
- Chemicals with Vapors
- Food & Beverage
- Oils, Fuels, Water & Wastewater