Radar Level Transmitter
True Echo Explosion Proof Pulse Radar Level Transmitter - Image 2
True Echo Explosion Proof Pulse Radar Level Transmitter - Image 3
Radar Level Transmitter

True Echo Explosion Proof Pulse Radar Level Transmitter

PRX

Dependable Level Readings In Hazardous Areas

The True Echo™ PRX Explosion Proof Pulse Radar Level Transmitter delivers accurate level readings in hazardous locations, including Class I, Division 1, and Class II/III, Division 1 areas. Ideal for environments with foam, vapors, or low dielectric materials, the PRX is designed for ease of installation and reliability. The self-adjusting signal power ensures optimal accuracy and output clarity, while the simple wiring options (2- or 3-wire 4-20mA) and pushbutton field calibration make setup quick and hassle-free.

  • Safe and reliable: Explosion proof and suitable for hazardous locations (Class I, Division 1; Class II/III, Division 1)
  • Reliable radar technology: Level measurement in challenging environments
  • Enhanced accuracy: Self-adjusting signal power
  • Easy-to-install: 2- or 3-wire 4-20mA output
  • Easy Setup: Pushbutton field calibration
  • Various Applications: Available in multiple model configurations (aluminum and stainless steel housings)

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PRX
Install Guide

Pulse Radar Probe Gateway Software Download
  • Operating Range:
    • PRX-017: 1 – 17 ft. (0.3 – 5 m)
    • PRX-050: 1 – 50 ft. (0.3 – 15 m)
    • PRX-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)
    • Extreme Temp: -40º to 572ºF (-40 to 300ºC)
  • Maximum Process Pressures:
    • Standard Temp/Pressure: 5 bar (72.5 psi)
    • Standard Temp/High Pressure: 70 bar (1015.3 psi)
    • High/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)
  • Power Consumption: 0.07 A max, 1.68 W @ 24 VDC
  • RS-485, RS-232, or HART for calibration and diagnostics
  • Output: 4-20 mA (shared common); 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™ PRX Explosion Proof Pulse Radar Level Transmitter used for?

The True Echo™ PRX is designed for accurate level measurement in hazardous locations, including environments with foam, vapors, or low dielectric materials. It is suitable for industries such as chemical processing, oil and gas, and bulk material storage.

The PRX features self-adjusting signal power, which dynamically optimizes accuracy and clarity based on environmental conditions.

Yes, the PRX can accurately measure materials with a dielectric constant (Er) greater than 2, making it effective in applications involving foam, vapors, or low dielectric substances.

The PRX has a NEMA 6/IP68 protection rating, ensuring it is resistant to dust, water, and harsh environmental conditions.

The PRX is available in aluminum and 316L stainless steel housings to suit different environmental and durability requirements.

OUTPUT

4-20 mA
RANGE

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

IP68, NEMA 6
CERTIFICATION

Explosion Proof, FCC, FM
INPUT

Voltage
INDUSTRY

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

2", 3"

WARRANTY

APG warrants its products to be free from defects in material and workmanship under normal use and service of the product for 24 months from the date of shipment from APG, unless otherwise specified by APG in writing. Read our full warranty policy HERE.

RETURNS

Returns and allowances must be authorized by APG in advance, which authorization may be granted or withheld by APG in APG’s sole and absolute discretion. Read our full return policy HERE.

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