Radar Level Transmitter for Stable Measurement in Complex Process Conditions
In many industrial processes, level measurement is affected by high temperature, pressure fluctuations, vapor, dust, foam, and complex tank structures. Conventional contact or ultrasonic sensors may experience unstable signals or frequent maintenance under these conditions.
The INRLT115 radar level transmitter is developed to address these challenges by using non-contact microwave technology, ensuring stable and accurate level measurement even in harsh and variable process environments.
Transmitters & Sensors Description
Core Measurement Advantage of FMCW Radar Technology
In the INRLT115 radar level transmitter, the measurement core is not based on directly resolving time-of-flight, but on detecting the frequency difference (δf) between the transmitted and received radar signals.
The FMCW measurement logic follows this process:
Frequency difference → Distance → Level
Instead of relying on extremely fine time resolution, the transmitter analyzes the frequency offset generated by the propagation delay of the radar wave. This approach avoids the physical limitations associated with time-based resolution and enables more stable and precise distance calculation.
As a result, FMCW radar technology provides significant advantages in high-accuracy level measurement applications, especially in environments involving long measuring distances, high temperature, pressure fluctuations, vapor, dust, or foam.
This is the fundamental reason why FMCW radar level transmitters are widely adopted for demanding industrial level measurement tasks.
Where Radar Level Measurement Is the Right Choice
The INRLT115 radar level transmitter is particularly suitable for applications where other level technologies reach their limits:
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High-temperature or high-pressure vessels
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Tanks with strong vapor or dust formation
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Foam-covered liquid surfaces
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Large storage tanks or tall silos
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Processes requiring continuous, non-contact measurement
Transmitters & Sensors Parameter
Model: INRLT115
| Item | Specification |
|---|---|
| Measuring Medium | Liquid |
| Measuring Range | 0.2 m ~ 30 m ；0.3 m ~ 150 m (depending on antenna and application) |
| Process Connection | Flange ≥ DN80 ；Thread G3 A |
| Process Temperature | -40 ~ 120 °C (flange connection) -40 ~ 110 °C (thread connection) |
| Process Pressure | -0.1 ~ 1.0 MPa |
| Antenna Type | 76 mm lens antenna |
| Antenna Material | PTFE |
| Measurement Accuracy | ±2 mm |
| Launch Angle | 3° |
| Protection Class | IP67 |
| Power Supply | Two-wire system: DC 24 V Four-wire system: AC 220 V Six-wire system: DC 12–24 V |
| Signal Output | Two-wire system: 4–20 mA + HART Four-wire system: 4–20 mA + HART Six-wire system: 4–20 mA + HART |
| Housing Material | Aluminum / Plastic / Stainless Steel |
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Why is the INRLT115 radar level transmitter suitable for high-temperature and high-pressure applications?
The INRLT115 radar level transmitter uses microwave radar technology, which is minimally affected by temperature and pressure changes. Unlike contact or ultrasonic sensors, radar signals remain stable in high-temperature and high-pressure environments, ensuring reliable level measurement.
Can the INRLT115 measure level accurately in tanks with heavy vapor or dust?
Yes. Radar signals are largely unaffected by vapor, dust, or condensation. The INRLT115 radar level transmitter is designed to maintain stable echo detection even in environments with strong vapor formation or dust clouds.
How does the INRLT115 handle foam on the liquid surface?
Foam can absorb or scatter acoustic signals, causing ultrasonic measurement errors. Radar signals, however, penetrate foam more effectively. This allows the INRLT115 to accurately detect the actual liquid surface beneath foam layers in many applications.
Is the INRLT115 suitable for tanks with internal structures or agitators?
Yes. The INRLT115 features advanced signal processing algorithms that filter out false echoes caused by internal structures such as agitators, ladders, or heating coils, allowing accurate level measurement in complex tank geometries.
When should radar level transmitters be preferred over ultrasonic level transmitters?
Radar level transmitters like the INRLT115 should be preferred when applications involve high temperature, high pressure, vapor, foam, dust, or when measurement reliability is critical under changing process conditions.
Can the INRLT115 be used for bulk solid level measurement?
Yes. The INRLT115 radar level transmitter is suitable for both liquid and bulk solid level measurement, especially in silos or bins where dust and uneven material surfaces are present.
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