5 Reasons Why Radar LevelSensors Are Better than
Radar level sensors are revolutionizing liquid measurement by overcoming foam, vapor, and turbulence challenges. Learn how Icon’s ProScan3 80GHz sensor delivers superior accuracy, reliability, Radar
MLR-70 Guided-Wave Radar Level Sensor
The MLR guided-wave radar level sensor transmitters are compact level measurement devices that include a transmitter that emits microwave pulses along a rod or wire rope electrode. The pulse propagates along the electrode in the form of electromagnetic wave toward the level surface, where it is reflected and the signal wave component is returned to the receiving module of the electronic housing. The on-board circuitry measures the time of flight of electromagnetic wave and the distance to the surface level is calculated.
According to the level height, the level meter output is set and the measured value is shown on the display. Radar level meters are resistant against changes in the atmosphere (pressure, temperature, dust, steam) and to changes in medium parameters (change in dielectric constant and conductivity).
Key Features
- FEP Teflon® Coated Probe
- Simple Programming
- IP67 Housing
- High Accuracy
- LCD Display
- 4-20mA Loop Powered
- RS485 MODBUS (Optional)
FAQ
Specifications
Documentation
Application
Installation Fittings
Videos
FAQ
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Specifications
specification-section-tab
Documentation
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Application
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Installation Fittings
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Videos
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- What is a Radar Level Sensor?
A liquid level sensor operates by detecting the presence or absence of material or determining the level of material
within a container. This is achieved using various technologies like capacitance, ultrasonic waves, or, as in the case of
radar, by measuring the time taken for a signal to bounce back from the material surface. Level sensing can be contact
or non-contact-based, depending on the method employed. A radar level sensor is a device used to measure the level of
liquids, solids, or slurries in various challenging industrial applications. It utilizes radar technology to determine the
distance from the sensor to the surface of the material being measured.
- What is a Radar Level Sensor?
A liquid level sensor operates by detecting the presence or absence of material or determining the level of material
within a container. This is achieved using various technologies like capacitance, ultrasonic waves, or, as in the case of
radar, by measuring the time taken for a signal to bounce back from the material surface. Level sensing can be contact
or non-contact-based, depending on the method employed. A radar level sensor is a device used to measure the level of
liquids, solids, or slurries in various challenging industrial applications. It utilizes radar technology to determine the
distance from the sensor to the surface of the material being measured.
| Basic Technical Data | ||
| Supply Voltage | MLR-70N : 18–36 VDC | |
| Output | 4–20 mA | HART | |
| Current Consumption | 4–20 mA | Max. 22 mA | |
| Basic Error [1] (Reference Reflector) |
MLR-70-20 (0.1–0.2 m | 0.2–2 m | 2–40 m): ±5 mm | ±3 mm | ±2 mm Other types (0.1–0.2 m | 0.2–2 m | 2–40 m): ±10 mm | ±4 mm | ±2 mm |
|
| Resolution | 1 mm | |
| Max. Length of Measuring Electrode | MLR-70-11 (12): 2 m | MLR-70-32: 12 m | |
| Dead Zone [2] by Sensitivity |
low/medium, user (1–4): 100 | 0 mm [3] high, user (5): 150 | 50 mm [3] user (6,7): 200 | 50 mm [3] user (8): 250 | 50 mm [3] |
|
| Measurement Sensitivity (8 degrees) | low (1) – medium (3) – high (5) – user (1 to 8) | |
| Failure Indication | Adjustable: 3.75 mA, 4 mA, 20 mA, 22 mA, LAST [4] | |
| Dampening | 1 – 99 s | |
| Warm Up Time | ≈ 60 s | |
| Internal Resistance Electrical Strength (Electrode – Housing) |
10 kΩ | |
| Coupling Capacity / Electric Strength (Housing – Supply Leads) |
5 nF | 500 VAC | |
| Max. Current Output Load Resistance | U = 24 VDC: Rmax = 270 Ω [5] | U = 22 VDC: Rmax = 180 Ω | U = 20 VDC: Rmax = 90 Ω | |
| Max. Tensile Strength of Rope Electrode | 1400 kg | |
| Protection Class | IP67 | |
| Process Connection | Screwing with thread G1" | |
| Recommended Cable | PVC 2 × 0.75 mm2 | |
| Weight (without Electrode) | ≈ 0.5 kg (≈ 1 kg variant NT, XiT) | |
Applications
- Suitable for: Foam, Vapor, Condensate, Turbulence
- Liquid Chemical Storage
- Chemical Sumps
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