RDCL Fuel Tank Capacitive Level Sensor RDCLDR300
The RDCL RDCLDR300 Fuel Tank Capacitive Level Sensor is an industrial RF admittance level transmitter designed for continuous measurement of diesel, fuel oil, lubricating oil, and other suitable non-conductive liquids.
It operates using RF admittance sensing technology to provide reliable and accurate liquid level measurements without requiring mechanical moving parts.
The RDCLDR300 supports a measuring range of up to 4 meters and features a 4 to 20 mA HART output for integration with industrial monitoring and automation systems.
It operates on an 18 to 30V DC power supply and features IP65 protection for reliable performance in demanding industrial environments.
With its durable construction and moving-part-free sensing technology, the RDCLDR300 is suitable for industrial fuel storage tanks, diesel level monitoring, oil storage systems, and automated liquid level control applications.
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A. Product Overview
The RDCLDR300 Capacitive Fuel Tank Level Sensor is designed to provide reliable and continuous liquid level measurement in small and medium-sized storage tanks.
It uses capacitive sensing technology to detect changes in the liquid level without requiring mechanical floats or moving components.
The sensor is particularly suitable for low-moisture, non-conductive liquids such as diesel, fuel oil and lubricating oil, subject to compatibility and calibration.
The RDCLDR300 converts measured capacitance variations into a standard 4 to 20 mA signal with HART communication capability.
This allows the liquid level to be monitored through compatible PLC systems, process indicators and industrial automation equipment.
Its stainless steel sensing probe, protective coating and aluminum alloy junction box provide a durable solution for industrial environments.
Important Technical Specifications
Parameter | Specification |
|---|---|
Product Name | Fuel Tank Capacitive Level Sensor |
Brand | RDCL |
Model Number | RDCLDR300 |
Measurement Technology | RF Admittance Capacitive Sensing |
Measuring Range | Up to 4 meters |
Capacitance Range | 20 to 2000 pF |
Power Supply | 18 to 30V DC |
Nominal Supply | 24V DC |
Signal Output | 4 to 20 mA with HART |
Measurement Accuracy | ±1% Full Scale or ±0.5 pF |
Sensor Material | SUS304 Stainless Steel |
Probe Coating | PFA or PEFE |
Process Connection | 1 inch PT, Standard |
Medium Temperature | -40°C to 80°C |
Process Pressure | -1 to 40 bar |
Protection Class | IP65 |
Junction Box Material | Painted Aluminum Alloy |
Suitable Media | Low-Moisture, Non-Conductive Liquids |
B. Working Principle
The RDCLDR300 Fuel Tank Capacitive Level Sensor operates on the principle of capacitance measurement, which detects variations in the electrical properties of the material surrounding the sensing probe.
The sensor measures the capacitance formed between its metal probe and a suitable reference electrode, commonly the wall of a metallic storage tank.
How It Works
1. Capacitance Formation
The sensing probe acts as one electrode, while the tank wall acts as the second electrode. The liquid and the air above it form the dielectric medium.
2. Liquid Level Detection
When the fuel level increases, more of the sensing probe becomes surrounded by liquid.
Because the electrical dielectric properties of the liquid differ from those of air, the capacitance changes.
3. Signal Processing
The internal electronic circuit detects the capacitance variation and processes it to determine the corresponding liquid level.
4. Output Conversion
The measured level is converted into a standard 4 to 20 mA output signal, with HART communication capability for compatible monitoring systems.
5. Continuous Monitoring
The output signal can be connected to a PLC, level indicator or monitoring system to display the liquid level continuously.
This measurement principle eliminates the need for mechanical movement and helps reduce wear associated with conventional float-based measurement systems.
C. Why Is the RDCLDR300 Fuel Tank Capacitive Level Sensor Used?
The RDCLDR300 is used for continuous monitoring of fuel and other suitable liquid levels in industrial storage tanks.
Accurate level measurement supports effective inventory management, process control and safe equipment operation.
Key Benefits
1. Continuous Fuel Level Measurement
Measures the liquid level throughout the selected measuring range rather than detecting only predefined high or low level points.
2. Reduced Mechanical Wear
The capacitive sensing principle does not require a moving float, reducing the risk of mechanical sticking and wear.
3. Industrial Automation Compatibility
The 4 to 20 mA HART output supports integration with compatible PLCs, process monitoring equipment and automation systems.
4. Suitable for Fuel and Oil Monitoring
Designed for low-moisture, non-conductive media, making it useful for compatible diesel, fuel oil and lubrication oil storage applications.
5. Industrial Protection
The IP65-rated enclosure provides protection against dust ingress and water jets, supporting use in demanding industrial environments.
6. Flexible Installation
The standard threaded process connection supports installation in compatible storage tanks.
Appropriate installation and calibration help achieve reliable measurement.
7. Inventory and Process Monitoring
Continuous tank level readings can help operators monitor fuel consumption, identify low-level conditions and plan refilling operations.
Common Applications
Diesel storage tank level monitoring
Industrial fuel oil tanks
Diesel generator fuel storage systems
Lubricating oil storage tanks
Industrial machinery oil reservoirs
Fuel storage and distribution facilities
Automated liquid storage monitoring
Small and medium-sized industrial tanks
D. Suitable Buyers
The RDCLDR300 Capacitive Fuel Tank Level Sensor is suitable for industrial customers, maintenance teams, OEM manufacturers and system integrators requiring continuous fuel or oil level measurement.
Buyer Category | Typical Requirement |
|---|---|
Diesel Generator Manufacturers | Fuel level monitoring in generator storage tanks |
Industrial Plant Operators | Continuous fuel and oil inventory monitoring |
Automation System Integrators | Integration of tank level signals into PLC systems |
OEM Equipment Manufacturers | Capacitive level sensing in industrial machinery |
Oil Storage Facilities | Monitoring liquid levels in compatible oil tanks |
Maintenance Engineers | Replacement or upgrading of tank level transmitters |
Process Control Engineers | Continuous level measurement using 4 to 20 mA signals |
Industrial Instrument Distributors | Supply of fuel tank level measurement equipment |
The RDCLDR300 is particularly relevant for buyers searching for a 24V DC capacitive fuel level transmitter, 4 to 20 mA diesel tank level sensor or industrial RF admittance level transmitter.
Frequently Asked Questions (FAQ)
1. What is the RDCLDR300 Fuel Tank Capacitive Level Sensor?
The RDCLDR300 is a capacitive level transmitter designed for continuous level measurement in fuel, oil and other compatible liquid storage tanks.
It converts capacitance variations into a standard electrical output signal.
2. What is the measuring range of the RDCLDR300?
The RDCLDR300 supports a maximum measuring range of 4 meters.
The required probe length and measurement range should be selected according to the storage tank dimensions.
3. Can the RDCLDR300 measure diesel fuel levels?
Yes. The sensor is intended for low-moisture, non-conductive media and can be considered for diesel fuel level measurement.
Appropriate probe selection and calibration are important for accurate operation.
4. What power supply is required for the RDCLDR300?
The sensor operates on an 18 to 30V DC power supply, with 24V DC being the nominal supply voltage.
5. Does the RDCLDR300 support a 4 to 20 mA output?
Yes. The sensor provides a 4 to 20 mA output with HART communication capability for connection to compatible industrial control and monitoring systems.
6. Can the RDCLDR300 be connected to a PLC?
Yes. Its analog output can be connected to a compatible PLC analog input module.
HART communication requires compatible hardware or an appropriate communication interface.
7. Does the RDCLDR300 have moving parts?
No. The sensor uses capacitance measurement technology without mechanical moving components, helping reduce mechanical wear and maintenance requirements.
8. What is the accuracy of the RDCLDR300?
The specified measurement accuracy is ±1% of full scale or ±0.5 pF, depending on the applicable measurement specification.
9. What is the protection rating of the RDCLDR300?
The RDCLDR300 has an IP65 protection rating, providing protection against dust ingress and water jets.
10. Can the RDCLDR300 be used in high-temperature applications?
The specified medium temperature range is -40°C to 80°C.
Applications outside this range require a different sensor configuration or model.
11. Is the RDCLDR300 suitable for automatic fuel monitoring?
Yes. Its continuous level output can be integrated into a suitable monitoring system for fuel inventory observation, level indication and alarm functions configured within the controller.
