Petroleum Radar Level Gauge for High-Temperature Industrial Tank Measurement

Oil storage is a high-stakes business: every millimeter of level represents valuable product, and every measurement error becomes an inventory loss or a safety risk. The QWRD80G603 petroleum radar level gauge brings 26GHz radar precision, high-temperature capability and corrosion-resistant construction to crude oil, product and industrial tanks.

Why Do You Need a Radar Level Gauge Built for Petroleum Service?

Petroleum tanks combine the hardest measurement conditions: heated products that can exceed 200 °C, corrosive crudes containing sulfur compounds, vapor atmospheres above the liquid, and the constant need for accurate inventory for custody transfer and leak detection. Contact level sensors wear out and foul in this service, and ultrasonic instruments fail in the vapor space. Radar measures non-contact from above, with no exposure to the product and no moving parts. A petroleum-grade radar gauge with high-temperature materials and corrosion-resistant PTFE or PVC sensor components is built specifically to survive these conditions while delivering the precise level data that tank farm operators, refiners and auditors depend on every day.

Working Principle: 26GHz Radar with Corrosion-Resistant Sensing

The QWRD80G603 transmits a 26GHz radar signal from the top of the tank toward the product surface and measures the reflected echo to determine the level. The signal frequency and processing are optimized for liquid hydrocarbons, giving stable echoes from oil surfaces even with vapor, foam or light agitation. The sensor components are available in PTFE or PVC, providing excellent corrosion resistance for aggressive crudes and chemicals, and the gauge is rated for pressures from -0.1 to 2.5 MPa. The measured value is delivered through 4-20 mA, HART, RS232 or RS485 outputs with DC 20-32 V supply, and the gauge mounts on flanges, threads or tri-clamp connections to suit existing tank nozzles.

Structural Advantages of the QWRD80G603

• Petroleum-grade design: engineered for oil, gas and industrial tank service.
• 26GHz radar frequency: reliable echoes from hydrocarbon surfaces.
• High-temperature capability: measures heated products without damage.
• PTFE/PVC sensor options: corrosion resistance for aggressive media.
• Pressure rating -0.1 to 2.5 MPa: covers pressurized and vacuum tanks.
• Multiple connections: flange, thread and tri-clamp options.
• Flexible outputs: 4-20 mA, HART, RS232 and RS485.
• Top-mounted non-contact design: no product contact, minimal maintenance.

Pain Point Analysis: 2 Challenging Working Conditions

Application Cases

Product Advantages

• Purpose-built for petroleum and industrial tank service
• 26GHz radar for reliable hydrocarbon measurement
• High-temperature capability for heated products
• PTFE/PVC corrosion-resistant sensor options
• Pressure rating -0.1 to 2.5 MPa
• Flange, thread and tri-clamp connections
• 4-20 mA, HART, RS232 and RS485 outputs
• Non-contact top-mounted design, low maintenance

Technical Parameters

SEO FAQ

Q1: Why is 26GHz a good frequency for petroleum level measurement?

The 26GHz frequency band offers an excellent balance of beam focus, signal strength and penetration for liquid hydrocarbon measurement. Compared with lower frequencies, 26GHz produces a narrower beam that avoids false echoes from tank walls and internal structures, and it reflects well from liquid surfaces including oils with low dielectric constants. Compared with very high frequencies, it maintains good performance over longer ranges and through vapor atmospheres. For petroleum tanks, the 26GHz signal gives stable, reliable echoes from crude oil, diesel, gasoline and other products, with the accuracy needed for inventory management, while the antenna remains compact enough for standard tank nozzles.

Q2: How does the gauge handle high-temperature products?

The QWRD80G603 is designed with high-temperature capability so that heated products do not damage the instrument or corrupt the measurement. The radar antenna and sensor components are selected and configured for the expected process temperature, and the electronics are thermally isolated from the process heat, keeping the sensitive components within their operating range. Non-contact measurement also means the electronics never touch the hot product. For very hot service such as heated bitumen or heavy oil, the high-temperature configuration with appropriate materials is recommended, and our engineers will confirm the correct configuration for your maximum process temperature.

Q3: What is the purpose of PTFE and PVC sensor options?

PTFE (polytetrafluoroethylene) and PVC are corrosion-resistant materials used for the sensor components that face the tank atmosphere and product. PTFE offers excellent chemical resistance across a very wide range of acids, alkalis and solvents, and it withstands high temperatures, making it the premium choice for aggressive chemical and petroleum service. PVC provides good corrosion resistance at lower cost for less demanding media. Choosing the right sensor material prevents corrosion of the instrument and contamination of the product, extending service life and maintaining measurement accuracy. Our engineers will recommend the appropriate material based on your media composition and temperature.

Q4: What outputs and connections are available?

The QWRD80G603 provides 4-20 mA, HART, RS232 and RS485 output options, allowing connection to tank gauging systems, PLCs, DCS and SCADA networks. The 4-20 mA/HART combination serves conventional analog loops with digital configuration capability, while RS232 and RS485 support direct digital communication for networked tank farms. Process connections are available as flanges, threads or tri-clamp fittings to match existing tank nozzles and piping standards. This flexibility makes the gauge easy to retrofit onto tanks with different connection types and to integrate into both legacy and modern control architectures.

Q5: What support and customization do you offer?

As the manufacturer, we provide direct engineering support for the QWRD80G603, including media compatibility advice, connection selection and installation guidance. Customization options include measuring range, sensor material (PTFE or PVC), process connection type, output protocol, power supply, labeling and packaging, plus OEM and ODM programs for tank gauging integrators and distributors. With a monthly supply capacity of 100 pieces and delivery within 5-8 working days, we support both single-tank projects and large tank farm programs. Contact us with your tank configuration and product details for a recommendation and quotation.

Why Choose Our Petroleum Radar Level Gauge?

The QWRD80G603 is engineered specifically for the challenges of petroleum and industrial tank measurement: high temperatures, corrosive media, vapor atmospheres and the accuracy demands of product inventory. Its 26GHz radar technology, PTFE/PVC corrosion resistance, flexible outputs and multiple mounting options make it the professional choice for tank farms and process plants. As the manufacturer, you receive application-matched configuration, factory calibration and direct engineering support. When your tanks hold valuable, demanding products, choose the radar gauge built for petroleum service.