SISCO guided wave radar level transmitter delivers accurate liquid level measurement with ±5 mm accuracy, a coaxial tubular antenna, and 4–20 mA output with optional HART protocol. Designed for temperatures from -40°C to 250°C and pressures up to 4.0 MPa, it is ideal for measuring low dielectric constant liquids such as deionized and deoxygenated water.
Accurate & Stable Measurement
- Adopting a narrow 3° beam angle design, the signal energy is highly concentrated with excellent penetration capacity, effectively reducing measurement interference.
- Supported by high-frequency pulsed electromagnetic wave transmission technology, it delivers outstanding measuring accuracy with a smaller blind zone. It can stably and precisely collect data at both high and low liquid levels, fundamentally solving the problem of inaccurate liquid level measurement.
Reliable Protection Performance
- Guided wave radar level sensor complies with high IP65 protection rating and is equipped with sealed protective connectors. It can resist water splashing and erosion, ensuring stable service in outdoor and humid environments for long-term use.
- This radar level transmitter’s measurement performance will not be affected by extreme working conditions such as vacuum, high temperature and high pressure, so it is compatible with most industrial fluid measurement scenarios with wide application coverage.
Applications
This guided wave radar level transmitter is specially designed for measuring liquids with low dielectric constant, widely applicable to industrial storage and processing systems containing deionized water, deoxygenated water and other similar pure low-permittivity fluids, such as electronic semiconductor ultra-pure water tanks, power plant deoxygenated water buffer vessels, pharmaceutical laboratory beaker solutions and industrial circulating water storage tanks, delivering stable and accurate liquid level monitoring for these low-dielectric liquid working conditions.
Deoxygenated Water
Ultra-Pure Water
Industrial Water
Deionized Water
| Model | SISCO-RLT-MIK-RD704 |
| Measuring Range | 0–6 m |
| Beam Angle | 3° |
| Protection Class | IP65 |
| Frequency Range | 500 MHz–1.8 GHz |
| Accuracy | ±5 mm |
| Antenna Type | Coaxial tubular antenna |
| Process Temperature | -40 ~ 250 °C |
| Process Pressure | -0.1 ~ 4.0 MPa |
| Process Connection | Thread / Flange |
| Signal Output | 4–20 mA (HART protocol optional) |
| Power Supply | DC24V/AC220V |
| Application Scenarios | Liquids with low dielectric constant(e.g., deionized water, deoxygenated water, etc.) |
Dimension (unit: mm)
Wiring Diagram
Q1: What is a guided wave radar level sensor?
A1: A guided wave radar level sensor is a high-precision instrument that measures liquid levels by transmitting microwave pulses along a probe. The reflected signal is analyzed to determine the exact liquid level, providing a reliable measurement regardless of vapor, foam, pressure, or temperature changes.
Q2: Is the radar level transmitter suitable for high-temperature applications?
A2: Yes. The guided wave radar level transmitter is designed for high-temperature industrial applications, with a process temperature range of -40°C to 250°C and a pressure rating of -0.1 MPa to 4.0 MPa. Its robust coaxial tubular antenna ensures stable and accurate level measurement even under extreme operating conditions. This makes it an ideal solution for demanding applications such as boiler feedwater systems, condensate tanks, deoxygenated water storage, chemical processing, and other high-temperature process vessels where reliable continuous level monitoring is essential.
Q3: Why choose a guided wave radar level sensor instead of an ultrasonic level sensor?
A3: Guided wave radar sensors provide higher accuracy and greater reliability, especially when measuring low dielectric liquids or operating in environments with vapor, foam, high pressure, or temperature fluctuations. They are also less affected by changes in process conditions, making them a preferred solution for demanding industrial applications.
Tips: What is the difference between a radar level transmitter and a guided wave radar level transmitter?
The main difference between a radar level transmitter and a guided wave radar (GWR) level transmitter lies in how the radar signal is transmitted.
A radar level transmitter emits microwave signals through free space to the surface of the medium, making it ideal for large tanks and non-contact measurement.
In contrast, a guided wave radar level transmitter sends microwave pulses along a probe (rod, cable, or coaxial tube), allowing the signal to travel directly to the liquid surface with minimal interference.
As a result, guided wave radar provides higher accuracy and more stable measurements in applications involving low dielectric constant liquids, foam, vapor, condensation, or narrow tanks. It is often the preferred choice for challenging process conditions, while non-contact radar is better suited for large open vessels and applications where probe installation is not practical.
Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.
What is covered?
SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.
What is not covered?
- Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
- Expendable parts.
- Routine cleaning or normal cosmetic and mechanical wear.
- Damage from misuse, abuse or neglect.
- Damage from use of parts other than SISCO approved.
- Damage from use outside the product’s usage or storage parameters.
- Damage from use of parts not sold by SISCO.
- Damage from modification or incorporation into other products.
- Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
- Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
Shop on sisco.com for all of your industrial test and measurement equipment & accessories including portable detectors, meters, testers, scales, etc.
