Fuel level monitoring
Fuel level monitoring.
CFS300B Queclink Fuel Level Sensor
Capacitive Fuel Sensor(BLE)
Order codeCFS300B In stockOfficial distributor
The CFS300B is a Capacitive Fuel Sensor(BLE). A stable BLE connection allows fuel data to be reported regularly over short or long distances, depending on the operating environment.
- WirelessBLE 5.4
- ProtectionIP69
- Operating–40 … +85 °C
- Size98 × 45 × L mm (L = measuring
- In stockVilnius warehouse · EU
- In stockLondon warehouse · UK
Dispatch and lead time are confirmed in the quote.
- Official distributor
- 17+ years in IoT
- Installation support
Manufacturer warranty24 months
Overview
CFS300B overview
Core Purpose
The CFS300B is a BLE-based capacitive fuel sensor designed to monitor fuel level changes in vehicle tanks. Its main role is to help fleets detect fuel theft and accurately track refueling and fuel consumption. The sensor works together with compatible GPS trackers, dash cameras, or routers to deliver fuel data to fleet systems.
Connectivity and Communication
The sensor uses BLE communication to transmit fuel level data wirelessly to a connected tracking device. This eliminates the need for complex wiring between the fuel tank and the main telematics unit. A stable BLE connection allows fuel data to be reported regularly over short or long distances, depending on the operating environment.
Fuel Measurement and Accuracy
Capacitive sensing enables precise fuel level measurement inside the tank. High measurement accuracy supports reliable fuel consumption reports and helps identify abnormal fuel drops. Fine resolution allows even small fuel changes to be detected, improving visibility into daily fuel usage.
Monitoring and Calibration Support
A built-in tilt sensor helps maintain stable fuel readings when vehicles are driving on uneven roads or slopes. This improves data consistency during real-world operation, especially for trucks operating on construction sites or rough terrain. The sensor supports more reliable fuel analysis under changing driving conditions.
Power and Environmental Suitability
The CFS300B is powered by internal batteries and is designed for long-term operation without frequent replacement, with battery life extending up to 7 years. An IP69-rated enclosure protects the sensor from water, dust, and high-pressure cleaning. This makes it suitable for harsh outdoor and industrial vehicle environments.
Installation and Compatibility
The sensor is designed for easy installation and supports different tank lengths through adjustable probe sizes. It can be used with tanks made from common materials such as aluminium, plastic, and stainless steel. Compatibility with gasoline, diesel, and LPG allows use across multiple vehicle types.
Key features
Fuel theft detection
Fuel theft detection.
Wireless data transmission
Wireless data transmission.
Tilt-based data stabilization
Tilt-based data stabilization.
Long-term battery operation
Long-term battery operation.
BLE 5.4 communication
BLE 5.4 communication.
IP69 waterproof rating
IP69 waterproof rating.
Internal long-life battery
Internal long-life battery.
Technical data
CFS300B specifications
| General Specifications | |
|---|---|
| Dimensions | 98 × 45 × L mm (L = measuring tube length, 10–100 cm) |
| Weight | 1 kg (when L = 70 cm) |
| Waterproof | IP69 |
| Accuracy | 99.5% |
| Resolution | 0.1 mm |
| Battery | 2 × 2700 mAh Li-SOCl₂ batteries |
| Battery Life | Up to 7 years (default 1 s broadcasting interval) |
| Average Current | 85 μA |
| Operating Temperature | −40 °C ~ +85 °C |
| BLE Specifications | |
| BLE Version | BLE 5.4 |
| Protocol | iBeacon Broadcasting |
| Broadcasting Interval | 1 s (default), adjustable |
| Wireless Connection Range | 10 m (normal conditions)100 m (no interference) |
| Specifications | |
| Application Tank | Shape-rule tanks made of Aluminium, Plastic, Metal, Iron, Stainless Steel |
| Application Liquid | Gasoline, Diesel, LPG |
No specification rows match the filter.
Applications
CFS300B applications
Fleet and Logistics
The sensor supports fuel monitoring for logistics trucks by providing accurate consumption data and detecting abnormal fuel loss. This helps improve cost control and reduce theft risks.
Construction and Heavy Vehicles
In construction trucks and heavy machinery, the tilt sensor helps stabilize readings on uneven ground. Long battery life and waterproof design support continuous operation in demanding environments.
Special Purpose Vehicles
The sensor can be installed on special vehicles that require fuel usage visibility over long operating cycles. BLE connectivity enables flexible integration without complex wiring.
Documentation
CFS300B downloads
Compatible products
CFS300B compatible products
Equipment this accessory is specified to work with.
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Questions
CFS300B questions and answers
What ingress protection does the CFS300B have?
IP69, according to the specification.
What is the operating temperature of the CFS300B?
–40 … +85 °C, according to the specification.
What wireless does the CFS300B provide?
BLE 5.4, according to the specification.
Request a quote
CFS300B price and lead time
Tell us the quantity and the delivery country. We reply within one working day with the price, stock at the nearest warehouse and the dispatch date.
European headquarters+370 655 51654[email protected]
United Kingdom branch+44 7425 726932[email protected]
- Company code306755852
- VAT numberLT100017217417
- Official distributor
- 17+ years in IoT
- Installation support
Manufacturer warranty24 months
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