DJI Agras T50 T25 Liquid Level Meter Module PN 00000355 – Precision Payload Monitoring

The DJI Agras Liquid Level Meter Module (Part Number 00000355) is a high-tech sensor component designed for direct integration into the spray tank of the latest generation of agricultural drones. Acting as the metric "eye" of the fluid system, this sensor is vital for flight automation, allowing the aircraft to autonomously calculate coverage range and intelligently manage return to base. At Magallan Aerospace Supply, we understand that the accuracy of this module is what separates efficient operation from a logistical planning error in the field.

Context and Importance in the Aerospace Sector

In the ecosystem of Unmanned Aerial Vehicles (UAVs) applications, managing payload weight and volume is a cornerstone of aviation safety. The PN 00000355 Level Gauge Module plays a strategic role by providing real-time data on the remaining liquid mass.

For the aerial agricultural sector, this information is crucial for calculating the aircraft's dynamic center of gravity (CG) and for preventing "cavitation" in spray pumps. Without a reliable meter, the operator risks failures in application uniformity or depletion of the input in hard-to-reach areas, compromising the integrity of the mission and crop yield.

What it is and how it works.

The 00000355 Level Gauge Module is a fluid interface detection sensor, typically based on high-sensitivity ultrasonic or capacitive technology, depending on the hardware revision. It is mounted internally or on the base of the drone's tank, where it emits signals to determine the liquid depth.

The operation is integrated into the drone's data bus. The sensor converts the physical reading into digital data that is instantly transmitted to the flight control unit. This allows the radio control software to display a precise percentage or the exact available volume, enabling the pilot to visualize the application's progress on a real-time scatter map.

Operational Applications in Aviation and Drones

Smart Return to Home (SRT) Automation

The meter sends data to the controller to calculate the "Return Point". When the liquid level reaches the limit required to complete the current line and safely return for refilling, the drone automatically initiates the procedure.

Dry Running Prevention

Protects the centrifugal spray pumps of the Agras line. When it detects that the level is critically low, the system interrupts suction, preventing air from entering the pipes and causing damage due to overheating or loss of pressure in the atomizing nozzles.

Data Logging and Telemetry

It allows for the storage of accurate mission logs. Agricultural aviation companies use this data to verify the exact amount of input applied per hectare, ensuring regulatory compliance and transparency for the end customer.

Technical and Operational Benefits

• Operational Reliability: Eliminates visual estimation, providing stable digital readings even during aggressive flight maneuvers or bank angles.
• Metric Precision: Calibrated to recognize minute volume variations, ensuring the flight plan is executed down to the last planned drop.
• Failure Reduction: Minimizes forced interruptions due to unintentional lack of chemical product in the middle of a field.
• Simplified Integration: Original architecture that eliminates the need for hardware modifications to the drone, utilizing the standard factory connector.
• Performance Optimization: Helps maintain flight stability by allowing the system to adjust engine gain as the liquid weight decreases.

Key Technical Differentiators

The PN 00000355 stands out for its extreme chemical resistance . As a component that comes into direct contact with, or is exposed to, vapors of pesticides, fertilizers, and solvents, its casing and seals are made of highly durable, inert polymers.

Unlike generic sensors, this module has internal motion compensation algorithms . This means that, even with the liquid swaying inside the tank during the drone's acceleration and braking, the sensor filters out the oscillations to deliver a constant and accurate average level reading, preventing false alerts on the operator panel.

Technical Specifications

• Product Name: Liquid Level Gauge Module
• Manufacturer: DJI Agriculture (Genuine Replacement Part)
• Part Number (PN): 00000355
• Category: Payloads / Mission Sensors
• Main Application: DJI Agras T50, T25 and T25P Drones
• Dimensions: Compact, designed for modular tank fitting.
• Weight: < 100g (optimized for aviation)
• Power supply: Provided via the drone's CAN/BUS.
• Interface / Connectivity: Low-latency sealed connector
• Operating Temperature: -10°C to 55°C
• Certifications: DJI standard electromagnetic compatibility

Compatibility and Installation Requirements

The module is fully compatible with the Agras T50 and T25 series (including the P version) . Installation requires technical opening of the tank compartment or access to the sensor base. We recommend that the replacement be carried out by qualified technicians to ensure a perfect seal against leaks. After installation, it is mandatory to perform Level Calibration using the control application to synchronize the new sensor with the specific volume of the tank used.

Important Technical Guidelines and Considerations

Accumulations of solid residue at the bottom of the tank can interfere with the sensor's accuracy. It is essential to rinse the tank after each operation to prevent the formation of crusts on the module's reading surface. If the system reports "Level Sensor Error," first check the cleanliness of the contact interface and the integrity of the cabling before proceeding with a final replacement.

Institutional Conclusion

At Magallan Aerospace Supply, each product is presented with technical responsibility, informational accuracy, and respect for the regulations governing the aeronautical sector. We act as suppliers committed to operational integrity, offering components and equipment with clear specifications and professional guidance, always within applicable regulatory limits. Our purpose is to contribute to safer, more efficient, and technically sound operations.