The TRUE ECHO® CR-L radar sensor ensures precise, reliable liquid level measurement with 80GHz FMCW technology. Its 4º half-angle beam reduces interference and simplifies installation, giving you confidence in your application.
CSA Class I Div 1 Groups A, B, C, D T4
Class I Zone 0 AEx ia IIC T4 Ga
Ex ia IIC T4 Ga
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PVDF or HDPE
PVDF or PE
Improved UV resistance for longer-lasting outdoor installations
Standard
Laser-etched that resist fading, peeling, and wear
Paper
Hazardous Locations
General purpose
Designed to simplify the setup and optimization of your TRUE ECHO sensors.
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APG offers versatile bracket mounting options for the TRUE ECHO® CR-L radar level sensor, ensuring easy installation across a variety of applications.
Our sales team can help you find the right bracket option to ensure optimal performance and stability for your sensor. Contact us today to discuss your mounting needs and get the perfect solution for your application!
Our product experts are committed to providing exceptional product support to ensure that your experience is top-tier.
RANGE
7.87 in. to 49.21 ft. (0.2 to 15 m)
MEASURING FREQUENCY
W Band, 76 to 81GHz, 5GHz FMCW bandwidth
POWER ON TO 1ST READING
6 sec
ACCURACY
±3 mm
BEAM ANGLE
8º (4º half angle)
UPDATE RATE
4-20mA: Automatic adjustment 1 to 3 Hz
RS-485: 1 Hz
PROCESS TEMPERATURE
-40º to 158ºF (-40º to 70ºC)
PROCESS PRESSURE
-14.5 to 43.51 psi
DIELECTRIC CONSTANT OF MEASURED MEDIUM
≥2
PROTECTION RATING
IP67
OUTPUT SIGNAL
4-20 mA: 2-wire + shield
RS-485: 4-wire + shield
FAULT OUTPUT (4-20 mA ONLY)
3.8 mA, 3.9 mA, 4 mA, 20 mA, 22 mA, or Last Value
HOUSING
PVDF
HDPE
PROCESS FITTING
2″ NPT
DIAMETER
2.72 in. (69 mm)
HEIGHT
5.39 in. (137 mm)
WEIGHT
18.87 oz (535 g)
CERTS
FCC, ISED, CE, CSA (Intrinsically Safe)
Ultrasonic level sensors operate by emitting a burst of sound waves that travel to the target and bounce back to the sensor. It needs an unobstructed air column between the sensor and target. Temperature compensation is used to adjust for the speed of sound in air over the working temperature range.
Radar level sensors utilize electromagnetic waves that travel to the target and bounce back to the sensor. These waves travel much faster and are less affected by temperature. Radar can measure longer distances with more stable results. The radar’s effectiveness depends on the target material’s dielectric constant.
Dielectrics are materials that don’t allow current to flow. They are more often called insulators because they are the exact opposite of conductors. The dielectric constant is a measure of the amount of electric potential energy, in the form of induced polarization that is stored in a given volume of material under the action of an electric field. It is expressed as the ratio of the dielectric permittivity of the material to that of a vacuum or dry air. Here are a few examples of the dielectric constants of different materials. Additional information can be found on the web.
Air = 1.000586
Crude Oil = 2.428
Polyethelyne = 2.3 – 2.4
Water = 80
