Radar for Bulk Solids and Liquids - Image 2

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Radar for Bulk Solids and Liquids

TRUE ECHO® CR-S

DESCRIPTION
Features

Adaptable by Design

Designed for bulk solids and liquid levels, the TRUE ECHO® CR-S Aluminum Radar combines installation flexibility with precise, dependable measurement. Choose from multiple mounting options to match your application and simplify installation, while millimeter-wave radar technology delivers reliable performance in various environments. With ±2 mm accuracy and fast response times, the CR-S provides the confidence you need to monitor inventory, optimize operations, and reduce uncertainty. Download the TRUE ECHO app for field-setup and data insights.

Reliable Inventory Monitoring: ±2 mm accuracy and 80 GHz wave radar technology with a high signal-to-noise ratio.
Works in Bulk Solids & Liquid Applications: 3° beam angle for higher gain and precision.
Reduced Maintenance: Non-contact radar with optional air purge technology.
Long-Lasting Durability: Robust aluminum housing.
Seamless Integration: Multiple mounting options. Field-programmable via the TRUE ECHO app or keypad for simplified operation.
Remote Monitoring: Use APG's Settler as an accessory to your CR-S to send level data to Explorer, where you can monitor assets and review trends.

Out of stock

Description
Additional information

CR-S Datasheet

CR-S User Manual

CR-S Install Guide

Performance

Application:
- Liquid
- Solid
Range:
- 0.1 to 10 m (0.3 to 32.8 ft)
- 0.1 to 20 m (0.3 to 65.5 ft)
- 0.1 to 30 m (0.3 to 98.4 ft)
- 0.3 to 60 m (1 to 196.9 ft)
- 0.6 to 120 m (2 to 393.7 ft)
Accuracy: Up to ±2 mm (dependent on distance)
Response Time:
- Power up to first reading <11 seconds (depends on parameter settings)
- <6 seconds, based on parameter settings
Beam Angle:
- 3º (1.5º half angle)
- 8º (4º half angle)
Measuring Frequency: W Band, 76 to 81 GHz, 5 GHz FMCW bandwidth

Environmental

Process Temperature: -40° to 392°F / -40° to 200°C
Ambient Working Temperature: -40º to 158ºF / -40º to 70ºC
Process Pressure: -0.1 to 2 MPa (-14.5 to 290 psi)
Dielectric Constant of Measured Medium: ≥ 1.5
Protection Rating: IP68

Electrical

Operating Voltage: 12-28 VDC
Reverse Voltage Protection: ≤30V
Spike Protection: <3kW

Connectivity

Cable Entry: 1/2″ NPT Cable Gland
Smartphone with TRUE ECHO Radar App
4 Button Keypad with Display: LCD (128 x 64 dot matrix)
Fault Output (4-20 mA only): 20 mA, 20.2 mA, Keep, 3.8 mA, 4 mA
Output:
- 4-20 mA (2 wire)
- RS-485 Modbus RTU (4 wire)
- RS-485 + 4-20 mA (4 wire)
- RS-485 + 4-20 mA + 2 Relays (6 to 8 wires)
Relays:
- 2 SPST relays
- 250VAC/30VDC
- Max switching current 5A (recommended <2A)

Physical

Housing: Die cast aluminum
Lens Material: PTFE
Process Fitting:
- NPT Mount, Stainless Steel
- NPT Mount, PTFE
- Flange Mount, Stainless Steel
- Flange Mount, Stainless Steel with PTFE Liner
- Flange Mount, Stainless Steel, Swivel with Purge Port
Weight (varies with mounting type):
- 2″ NPT: 4.37 lbs (1,983 g)
- 3.5″ NPT: 5.13 lbs (2,325 g)

Certification

FCC ID: VPK-APGCRS
ISED IC: 7385A-APGCRS
CE

Settler

Remote Monitoring Gateway
Part #: 125422

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What are common applications for the TRUE ECHO^® CR-S Radar?

The TRUE ECHO® CR-S covers a wide range of applications. This radar can be used to measure bulk solids and liquids. It can measure anything with a dielectric constant of 1.5 or greater.

What are dielectric constants?

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

Does the TRUE ECHO^® CR-S require calibration?

No, the CR-S requires a one-time setup via the TRUE ECHO app or integrated keypad.

How does the PTFE lens handle heavy dust buildup, steam, or condensation?

Select TRUE ECHO® CR-S models are equipped with a optional air purge feature to keep the unit clear of heavy buildup.

What is the difference between ultrasonic and radar sensors?

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.

Can the TRUE ECHO^® CR-S measure levels in plastic containers without touching or opening the container?

Yes, the sensor can look through most plastic containers and measure liquid levels inside.

OUTPUT	4-20 mA, Modbus, Modbus RTU, RS-485
CERTIFICATION	CE, FCC, ISED
INDUSTRY	Agriculture, Chemical, Industrial Automation, Oil & Gas, Water & Wastewater
ENCLOSURE PROTECTION	IP68
MATERIAL	Aluminum
RANGE	0.3' to 393.7', 1' – 100', 1' – 15', 1' – 25', 1' – 30', 1' – 50', 16' – 30', 31' – 50', 4" – 40', 4" – 79", 5" – 12', 6" – 35'

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.