True Echo Pulse Radar Level Transmitter For Liquids

PRL

Dependable Liquid Level Readings In a Wide Range of Environments

The True Echo™ PRL Pulse Radar Level Transmitter provides precise liquid level readings for various applications, including oil-water interface measurement with added firmware. This reliable radar sensor is ideal for liquid level measurement in multiple environments, delivering unmatched accuracy and versatility.

Versatile Materials: Available with two housing materials and multiple antenna options, the True Echo™ PRL sensor adapts to a wide range of operational environments.

Easy Wiring & Setup: Featuring isolated 4-20mA output and push-button field calibration, the True Echo™ PRL is designed for effortless installation and use.

Oil-Water Interface Detection: A firmware upgrade adds oil-water interface detection to enhance the PRL’s already versatile features.

  • Multiple Range Options: Ranges to 17, 50, or 100 feet
  • High Accuracy: ±0.25% of measured range accuracy
  • Precision Output: 6.1 μA output resolution
  • Configurable Output: Field configurable 4-20 mA/20-4 mA Output
  • Flexible Communication: RS-232, RS-485, or HART communications
  • Advanced Software: PC calibration, diagnostic and data logging software
  • PLC compatible: Modbus RTU
  • Durable Enclosure: Nema 6/ IP68 enclosure rating
  • Easy Installation: Simple installation and setup
  • Automatic Tank Adjustments: Automatic adjustments for most tank conditions

  • Operating Range:
    • PRL-017: 1 -17 ft. (0.3 – 5 m)
    • PRL-050: 1 – 50 ft. (0.3 – 15 m)
    • PRL-100: 1 – 100 ft. (0.3 – 30 m)
  • Frequency: 6.3 GHz
  • Accuracy: ± 0.25% of measured range
  • 4-20 mA Resolution: 6.1 μA (approx. 2622 digital counts across range)
  • Target Dielectric Constant: εr > 2
  • Enclosure Operating Temperature: -40º to 140ºF (-40 to 60ºC)
  • Process/Probe Temperatures:
    • Standard: -40º to 176ºF (-40 to 80ºC)
    • High Temp: -40º to 350ºF (-40 to 177ºC)
    • Sanitary: -40º to 400ºF (-40 to 204ºC)
    • Extreme Temp: -40º to 572ºF (-40 to 300ºC)
  • Maximum Process Pressures:
    • Standard Temp/Pressure: 5 bar (72.5 psi)
    • Standard Temp/High Press: 70 bar (1015.3 psi)
    • High/Sanitary/Extreme Temps: 2 bar (29.0 psi)
  • Enclosure:
    • NEMA 6: Aluminum or 316L Stainless Steel, IP68 Sealing
  • Loop Resistance: RL = (VS – 6) / 24 mA
  • Input Voltage:
    • 12-30 VDC; 20-35 VDC (HART);
    • 115 VAC (60 Hz); 230 VAC (50 Hz)
  • Power Consumption:
    • 0.07 A max, 1.68 W @ 24 VDC
    • 1.7 VA for 115/230 VAC
  • RS-485, RS-232, or HART for calibration and diagnostics
  • Output: 4-20 mA (shared common or isolated); HART 7
  • Antenna:
    • Rod: Teflon, 10.3” (261.6 mm)
      • Beam Spread: 6° from center
    • Horn: 316L Stainless Steel, Ø 6.3” (160 mm)
      • Beam spread: 3° from center
  • FCC
    • Part 15 for low power communications class II install
What is the True Echo™ PRL Pulse Radar Level Transmitter used for?

The True Echo™ PRL is designed for precise liquid level measurements across various industrial applications. It is especially effective for oil-water interface detection and is suitable for environments that require accurate liquid level monitoring, such as tanks and vessels.

With a firmware upgrade, the True Echo™ PRL can detect the interface between oil and water. This feature enhances the versatility of the sensor, allowing it to accurately differentiate between two liquid layers.

The True Echo™ PRL comes with two housing materials—aluminum and 316 stainless steel—and a variety of mounting options. This ensures compatibility with various operational environments, including harsh industrial settings.

Yes, the True Echo™ PRL is NEMA 6/IP68 rated, which means it is dust-tight and can withstand immersion in water, offering robust protection in challenging environmental conditions.

Yes, the True Echo™ PRL is available with a sanitary tri-clamp mounting option, making it suitable for applications requiring hygienic conditions.

OUTPUT

4-20 mA

RANGE

1' – 100', 1' – 15', 1' – 25', 1' – 30', 1' – 50', 16' – 30', 31' – 50'

ENCLOSURE PROTECTION

IP68, NEMA 6

INPUT

Voltage

INDUSTRY

Chemical, Food & Beverage, Industrial Automation, Marine, Oil & Gas, Water & Wastewater

CERTIFICATION

FCC

MOUNT

2"