DEF Tank with Level Sensor

Product Specifications

Technical details and manufacturing context for DEF Tank with Level Sensor

Definition

This DEF tank is a component used in diesel vehicles equipped with selective catalytic reduction (SCR) systems. It stores Diesel Exhaust Fluid (DEF), also known as AdBlue, which is a urea-based solution injected into the exhaust stream to reduce nitrogen oxide (NOx) emissions. The tank is designed to hold the fluid under atmospheric pressure and includes an integrated level sensor that continuously measures the fluid level. The sensor transmits data to the vehicle's electronic control unit (ECU), enabling low-level warnings and consumption monitoring. The tank is typically made of high-density polyethylene (HDPE), which is compatible with DEF, while sensor components may use stainless steel. The nominal capacity ranges from 15 to 60 liters, suitable for light to medium duty vehicles. The operating temperature range is -40°C to 85°C, accommodating DEF freeze-thaw cycles (DEF freezes at -11°C). The level sensor accuracy is ±2% of full scale. Supply voltage is 9-36 V DC, compliant with ISO 7637 for vehicle electrical systems. The output signal is analog ratiometric, ranging from 0.5 to 4.5 V. Ingress protection is rated IP67 to IP69K per IEC 60529, suitable for high-pressure washdown. The connection thread is metric, M20 to M33, per ISO 228. Weight ranges from 3 to 8 kg, depending on capacity and sensor integration. This product is listed as a reference; actual specifications must be verified with the manufacturer for specific models and applications.

Working Principle

The DEF tank stores Diesel Exhaust Fluid at atmospheric pressure. The integrated level sensor, which may be float-type, ultrasonic, or capacitive, measures the fluid height or volume. The sensor sends this data to the vehicle's ECU. The ECU uses the information to trigger low-level warnings and calculate DEF consumption rates. The sensor operates within a supply voltage of 9-36 V DC and provides an analog ratiometric output of 0.5-4.5 V. The tank is designed to withstand operating temperatures from -40°C to 85°C, including freeze-thaw cycles. The sensor accuracy is ±2% of full scale, ensuring reliable monitoring. The tank's ingress protection rating of IP67 to IP69K allows for high-pressure washdowns. The connection thread (M20-M33) facilitates sensor mounting.

Common Materials

High-density polyethylene (HDPE), Stainless steel (sensor components)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Nominal Capacity	15–60 L	Standard sizes for light to medium duty vehicles
Operating Temperature	-40–85 °C	DEF freezes at -11°C; system must handle freeze/thaw
Level Sensor Accuracy	±2 %	Full scale accuracy for reliable monitoring
Supply Voltage	9–36 V DC	Compatible with vehicle electrical systemsISO 7637
Output Signal	0.5–4.5 V	Analog ratiometric output
Ingress Protection	IP67–IP69K	High pressure washdown resistantIEC 60529
Material	HDPE	High-density polyethylene for DEF compatibility
Weight	3–8 kg	Depends on capacity and sensor integration
Connection Thread	M20–M33 mm	Standard metric thread for sensor mountingISO 228

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

Tank Body
Primary container for storing DEF fluid, designed to prevent crystallization and contamination

Material: High-density polyethylene (HDPE)
Level Sensor Assembly
Measures and transmits fluid level data to the vehicle's ECU

Material: Stainless steel, plastics
Filler Neck Part
Opening for adding DEF fluid, often with anti-spill design

Material: Plastic
Mounting Brackets Part
Secures the tank to the vehicle chassis

Material: Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for DEF Tank with Level Sensor.

Applied To / Applications

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

DEF/AdBlue Injection System

View system integration details

Manufacturers of DEF Tank with Level Sensor

Manufacturer profiles associated with DEF Tank with Level Sensor.

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Frequently Asked Questions

What is the typical capacity range for this DEF tank?

The nominal capacity is listed as 15 to 60 liters, suitable for light to medium duty vehicles. The exact capacity for a specific application should be confirmed with the manufacturer.

What type of level sensor is used?

The level sensor can be float-type, ultrasonic, or capacitive. The specific type may vary by model; verify with the supplier.

What is the operating temperature range?

The operating temperature range is -40°C to 85°C. This accommodates DEF freeze-thaw cycles, as DEF freezes at -11°C.

What is the ingress protection rating?

The ingress protection is rated IP67 to IP69K per IEC 60529, making it resistant to high-pressure washdowns. Confirm the exact rating for the specific model.

Data Basis

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

Preliminary Technical Classification

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pressure:	Atmospheric to 0.5 bar (max working pressure)
flow rate:	N/A (static storage tank)
temperature:	-20°C to +50°C (operating), -40°C to +70°C (storage)
slurry concentration:	Not applicable - DEF is a clear, non-slurry aqueous solution

Product Specifications

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