RDCL Split Type Ultrasonic Level Transmitter RDCLUS10F
The RDCL Split Type Ultrasonic Level Transmitter RDCLUS10F is a non-contact industrial liquid level measurement instrument designed for continuous level monitoring in tanks, reservoirs, and process vessels.
It operates using ultrasonic sensing technology to measure liquid levels without requiring direct contact with the process medium.
The RDCLUS10F features a measurement range of 0 to 10 meters, an LCD display, 0.3% full-scale accuracy, and 1 mm resolution for precise and reliable liquid level monitoring.
It supports 4 to 20 mA analog output and RS485 Modbus communication for integration with compatible industrial monitoring and automation systems.
Its split-type design allows the ultrasonic sensor probe and display controller to be installed separately, providing flexibility in installation and operation.
The RDCLUS10F is suitable for water treatment, wastewater management, chemical processing, petrochemical industries, and industrial automation applications.
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A. Product Overview
The RDCL RDCLUS10F Split Type Ultrasonic Level Transmitter continuously measures liquid level without contact, using ultrasonic echoes to determine distance to the liquid surface.
An ultrasonic probe mounts above the liquid while a separate LCD controller provides accessible monitoring and configuration.
Its 4 to 20 mA output and RS485 communication support compatible PLC and DCS integration for water, wastewater, chemical tanks and automated liquid handling.
Important Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Split Type Ultrasonic Level Transmitter |
| Brand | RDCL |
| Model Number | RDCLUS10F |
| Measurement Principle | Ultrasonic Echo Reflection |
| Measurement Type | Continuous Non-Contact Level Measurement |
| Measuring Range | 0 to 10 meters |
| Blind Zone | 0.25 to 0.6 meters |
| Measurement Accuracy | 0.3% of Full Scale |
| Measurement Resolution | 1 mm |
| Display | LCD, displaying liquid level or distance |
| Analog Output | 4 to 20 mA |
| Digital Communication | RS485 |
| Protocol | Modbus or customized protocol |
| Power Supply | 24V DC or 220V AC, depending on version |
| Operating Pressure | Normal atmospheric pressure |
| Ambient Temperature | −20°C to 60°C |
| Lightning Protection | Built-in protection device |
| Installation | Separate sensing probe and controller |
| Measured Parameter | Liquid level or distance to liquid surface |
Technical Note: The 10-meter range is nominal. Account for the blind zone and confirm power, wiring and protocol for the selected version.
B. Working Principle
The RDCLUS10F sends ultrasonic pulses toward the liquid and times their return echoes. Its controller calculates distance using the speed of sound, then computes level from the configured tank reference height.
Step-by-Step Working Process
- Signal Generation: The controller sends an electrical driving signal to the ultrasonic probe.
- Wave Transmission: A piezoelectric transducer produces ultrasonic pulses.
- Wave Propagation: Pulses travel through air toward the surface.
- Echo Reflection: The liquid surface reflects the sound waves toward the probe.
- Echo Reception: The probe converts returning echoes into electrical signals.
- Distance Calculation: The controller calculates probe-to-surface distance from the measured echo time.
- Level Calculation: The configured tank reference height converts distance into level.
- Output Transmission: The LCD shows level or distance, while 4 to 20 mA or RS485 sends data to connected equipment.
Temperature Compensation
The RDCLUS10F uses automatic temperature compensation to offset changes in air sound speed and improve measurement stability.
Important Measurement Considerations
The 0.25 to 0.6 m blind zone is not reliably measurable. Operation is specified at normal atmospheric pressure; vacuum, pressure, heavy foam or vapor require suitability checks.
C. Why Is the RDCLUS10F Ultrasonic Level Transmitter Used?
1. Continuous Liquid Level Measurement
Measures level throughout its usable span, rather than detecting only a single point, for filling, emptying and inventory monitoring.
2. Non-Contact Liquid Measurement
The probe stays above the liquid, reducing corrosion, contamination and adhesion exposure, including with suitable viscous or aggressive media.
3. Remote Display and Monitoring
The probe stays at the tank while the LCD controller is mounted remotely for convenient readings and setup.
4. Accurate Industrial Level Monitoring
Its stated 0.3% full-scale accuracy and 1 mm resolution support repeatable measurements under specified conditions.
5. PLC and DCS Integration
4 to 20 mA supports analog inputs; RS485 supports Modbus or a customized protocol, depending on configuration.
6. Water Tank Level Monitoring
Tank and reservoir readings support pump control, filling and high-level or low-level alarms.
7. Wastewater Treatment
Non-contact sensing limits wastewater exposure; consider foam, vapor and tank buildup.
8. Chemical and Petrochemical Applications
May suit atmospheric-pressure tanks with good echo conditions. Hazardous locations require an appropriately certified version; explosion-proof certification is not assumed.
9. Reduced Contact-Related Maintenance
An above-liquid probe avoids immersion-related wear; proper mounting and a clear acoustic path remain essential.
10. Automatic Filling and Emptying
Level signals allow compatible controllers to manage pumps, valves, alarms, filling and discharge.
D. Suitable Buyers and Industrial Applications
For buyers needing continuous non-contact level measurement, remote LCD indication and industrial outputs.
| Suitable Buyers | Typical Applications |
|---|---|
| Water Treatment Plants | Raw and treated water tank monitoring |
| Wastewater Treatment Companies | Collection and treatment vessel levels |
| Chemical Manufacturers | Suitable liquid storage tanks |
| Petrochemical Industries | Atmospheric-pressure process vessels |
| Food and Beverage Manufacturers | Compatible liquid storage and processing |
| Pharmaceutical Manufacturers | Utility liquid tank monitoring |
| Power Generation Plants | Utility and water storage tanks |
| Industrial Automation Companies | PLC and DCS level signal integration |
| OEM Machine Manufacturers | Automated liquid handling machinery |
| System Integrators | Remote tank measurement projects |
| Municipal Water Departments | Water reservoirs and storage tanks |
| Pump Control Panel Manufacturers | Automatic pump control by liquid level |
| Industrial Maintenance Teams | Replacement of compatible transmitters |
Common Industrial Applications
- Industrial water tanks, reservoirs and wastewater collection tanks
- Water treatment and suitable chemical storage vessels
- Atmospheric-pressure petrochemical process tanks
- Food processing and pharmaceutical utility water systems
- Remote LCD level and distance indication
- PLC-based pump control, filling and discharge automation
- 4 to 20 mA level monitoring and RS485 Modbus integration
- High-level and low-level alarms through a compatible controller
E. Frequently Asked Questions (FAQ)
1. What is the RDCL RDCLUS10F Split Type Ultrasonic Level Transmitter?
The RDCLUS10F is a non-contact industrial transmitter that continuously measures liquid level using ultrasonic echo reflection. It includes a separate sensing probe and LCD controller, allowing measurement at the tank and monitoring from an accessible location.
2. What is the measuring range of the RDCLUS10F?
The specified nominal measuring range is 0 to 10 meters. The usable range depends on the installed probe, mounting arrangement and 0.25 to 0.6 m blind zone, where dependable measurement is not guaranteed.
3. How does the RDCLUS10F Ultrasonic Level Transmitter work?
The probe transmits ultrasonic waves toward the liquid surface and receives their reflected echoes. The controller calculates distance from echo travel time, then converts that distance into liquid level using the configured tank reference height.
4. What is the accuracy of the RDCLUS10F?
The specified measurement accuracy is 0.3% of full scale. Actual measurement performance depends on correct installation, echo conditions and operation within the stated instrument limits.
5. What is the resolution of the RDCLUS10F?
The transmitter has a stated resolution of 1 mm, allowing the controller to indicate small changes in the measured liquid level or surface distance.
6. What is the blind zone of the RDCLUS10F?
The specified blind zone is 0.25 to 0.6 meters immediately below the ultrasonic probe. The maximum liquid surface height must remain outside this region for reliable measurement.
7. What is the difference between a split type and an integrated ultrasonic level transmitter?
A split-type unit has a separate probe and electronic display controller connected by a cable. An integrated unit combines sensing and electronics in one assembly. The split arrangement allows the RDCLUS10F controller to be mounted away from the tank.
8. Does the RDCLUS10F support 4 to 20 mA output?
Yes. The transmitter provides a 4 to 20 mA analog output that can transmit continuous liquid level information to compatible PLC analog inputs, indicators and monitoring systems.
9. Does the RDCLUS10F support RS485 Modbus communication?
Yes. The RDCLUS10F supports RS485 digital communication with Modbus or a customized protocol, depending on the version. Confirm the protocol and communication settings before integration.
10. What is the operating voltage of the RDCLUS10F?
The listed power options are 24V DC and 220V AC. The required voltage depends on the selected configuration and must be verified before wiring and installation.
11. Does the RDCLUS10F have an LCD display?
Yes. The separate electronic controller has a built-in LCD display that can show the measured liquid level or the distance between the probe and liquid surface.
12. Can the RDCLUS10F be connected to a PLC?
Yes. The 4 to 20 mA output can connect to a compatible PLC analog input. RS485 may also connect to a suitable PLC communication port when its protocol, wiring and settings match the transmitter.
