Fuel Level Sensor

Product Specifications

Technical details and manufacturing context for Fuel Level Sensor

Definition

The Fuel Level Sensor is a component used in motor vehicle manufacturing to measure and monitor the amount of fuel remaining in a fuel tank. It is a critical part of the fuel tank system, detecting and transmitting real-time fuel level data to the vehicle's dashboard or electronic control unit, enabling accurate fuel monitoring and preventing fuel exhaustion. The sensor typically operates using a float arm connected to a variable resistor (potentiometer) or a capacitive sensing element. As the fuel level changes, the float position alters the electrical resistance or capacitance, which is converted into a voltage signal corresponding to the fuel level. The sensor is designed to operate within a typical automotive electrical system range of 9–16 V DC, with an analog ratiometric output signal of 0.5–4.5 V. It measures fuel levels from 0 to 100% with an accuracy of ±1.5% FS and a resolution of 0.5%. The operating temperature range is -40 to 85 °C, and the storage temperature range is -40 to 105 °C. The sensor is protected against water and dust with an ingress protection rating of IP67–IP69K. The float arm is made of stainless steel (316L) for corrosion resistance, the housing is plastic, and the electrical contacts are copper. The weight ranges from 150 to 250 g depending on the length. The output impedance is ≤10 Ω for signal integrity, and the response time is ≤100 ms for fast level changes. The sensor is designed to survive extreme climates and is suitable for use in various vehicle types. For procurement and verification, the sensor should be checked against relevant standards such as ISO 16750-2 for operating voltage, ISO 16750-4 for temperature ranges, ISO 6415 for accuracy, IEC 60529 for ingress protection, and ASTM A240 for material grade. However, these standards are references for verification and do not imply certification or compliance of any specific product. It is essential to verify model-specific values and standards with the legal manufacturer or supplier before use.

Working Principle

The fuel level sensor typically uses a float arm connected to a variable resistor (potentiometer) or a capacitive sensing element. As the fuel level changes, the float moves, altering the electrical resistance or capacitance. This change is converted into a voltage signal that corresponds to the fuel level. The signal is then transmitted to the vehicle's dashboard or electronic control unit for display and monitoring.

Common Materials

Plastic (housing), Stainless Steel (float arm), Copper (electrical contacts)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Voltage	9–16 V DC	Typical automotive electrical system rangeISO 16750-2
Output Signal	0.5–4.5 V	Analog ratiometric output
Measurement Range	0–100 %	Full tank level
Accuracy	±1.5 % FS	Full scaleISO 6415
Resolution	0.5 %	Minimum detectable level change
Operating Temperature	-40–85 °C	Survives extreme climatesISO 16750-4
Storage Temperature	-40–105 °C	Non-operatingISO 16750-4
Ingress Protection	IP67–IP69K	Waterproof and dust-tightIEC 60529
Material	316L Stainless Steel	Corrosion resistantASTM A240
Weight	150–250 g	Depends on length
Output Impedance	≤10 Ω	Low impedance for signal integrity
Response Time	≤100 ms	Fast level changes

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Float Arm Part
Moves with fuel level changes to actuate the sensing mechanism

Material: stainless steel
Potentiometer/Variable Resistor Part
Converts mechanical float position into variable electrical resistance

Material: carbon composite/copper
Housing Part
Protects internal components from fuel and environmental exposure

Material: fuel-resistant plastic
Capacitive Sensing Element Optional
Reads level by capacitance change instead of a wiper track.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Fuel Level Sensor.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Fuel Tank

View system integration details

Manufacturers of Fuel Level Sensor

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Shenzhen Dianyingpu Technology Co., Ltd.

Guangdong, CN

Also makes: Ultrasonic Sensor, Ultrasonic Transducer, Liquid Level Sensor and 4 more

Listed on the company's own website · profile compiled by CNFX from public sources

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Frequently Asked Questions

What is the operating voltage range of the fuel level sensor?

The typical operating voltage range is 9–16 V DC, as per ISO 16750-2. However, always verify the exact range for your specific model with the manufacturer.

What is the accuracy of the fuel level sensor?

The accuracy is ±1.5% FS (full scale) according to ISO 6415. This means the measured level can deviate by up to 1.5% of the full scale. Confirm the accuracy for your application.

What is the ingress protection rating?

The sensor has an ingress protection rating of IP67–IP69K, meaning it is waterproof and dust-tight. This rating is per IEC 60529. Check the specific rating for your model.

What materials are used in the sensor?

The housing is plastic, the float arm is stainless steel (316L) per ASTM A240, and the electrical contacts are copper. These materials provide corrosion resistance and durability.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0 to 10 bar
other spec:	Fuel type compatibility (diesel, gasoline, biodiesel blends)
temperature:	-40°C to 125°C

Product Specifications

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