Lambda Sensors
Precision Air-Fuel Ratio Control
Advanced planar ZrO2 lambda sensors with integrated heaters for accurate oxygen measurement. Available in 2-state and wideband configurations for gasoline, diesel, and E85 applications with global OBD compliance.
Product Range
LD6000
Planar 2-State Lambda Sensor
Our LD6000 is a planar λ=1 sensor based on the Nernst principle with integrated heating for consistent operation. Designed for 2-state closed-loop control and catalyst monitoring in OBD systems, it offers exceptional response times and reliable performance.
Key Features:
- Response time: 60ms to 250ms (depending on protector)
- Light-off time: ≤12 seconds
- Operating temperature: Up to 930°C (short-time 1030°C)
- Two protector options: D1 (faster response) and D3 (enhanced protection)
- Nominal heating voltage: 13V
- Multi-fuel compatible: Gasoline, Diesel, E85
LD6549
5-Wire Wideband Oxygen Sensor
Our most advanced lambda sensor, the LD6549 offers wide-band measurement from Lambda 0.65 to infinity. With dual limiting current pumping cells, it provides precise O2 concentration and λ value measurement across the full operating range.
Key Features:
- Wide measurement range: Lambda 0.65 to ∞
- Dual limiting current pumping cells for accuracy
- Compatible with CJ125/CJ135 control units
- Light-off time: ≤12 seconds
- Operating temperature: Up to 930°C (short-time 1030°C)
- Multi-fuel Nominal heating voltage: 7.5V: Gasoline, Diesel, E85
- Ideal for advanced engine management systems
Key Applications
Engine Control Systems
Lambda sensors are essential for closed-loop air-fuel ratio control in modern engines. By continuously monitoring oxygen levels in exhaust gases, they enable the engine control unit to adjust fuel injection for optimal combustion efficiency, reduced emissions, and improved fuel economy.
Catalyst Monitoring (OBD)
On-Board Diagnostics systems rely on lambda sensors to monitor catalyst performance. By measuring oxygen levels before and after the catalytic converter, the system can detect catalyst degradation and alert drivers when emission control effectiveness falls below regulatory thresholds.
Multi-Fuel Applications
Tau Power lambda sensors are compatible with gasoline, diesel, and E85 alternative fuels, making them versatile solutions for diverse vehicle platforms and fuel types while maintaining consistent accuracy and performance.
Technical specifications comparison
Feature
LD6000
LD6549
Type
2-State λ=1
Wideband
Measurement Range
λ=1
λ 0.65 to ∞
Response Time
60-250ms
Variable
Heating Voltage
13V
7.5V
Special Feature
Dual protector options
Wide-band measurement
Best For
Standard applications
Advanced engine control
Operating Conditions
Temperature Performance
- Exhaust gas temperature: Up to 930°C (peak 1030°C)
- Hexagon temperature: 570-630°C (model dependent)
- Cable temperature: Up to 250°C
- Storage temperature: -40°C to 100°C
Mechanical Robustness
- Maximum vibration: 300 m/s²
- Exhaust gas pressure: ≤2.5 Bar
- Tightening torque: 40 to 60 Nm
Fuel Compatibility
All models support gasoline, diesel, and E85 alternative fuels without compromise in accuracy or durability.
Integrated heater technology
All Tau Power lambda sensors feature integrated heaters that maintain optimal sensor temperature independent of exhaust gas conditions. This ensures:
- Rapid light-off time (≤12 seconds)
- Consistent accuracy across varying exhaust temperatures
- Reliable operation during cold starts
- Temperature-independent signal output
- Extended sensor lifespan
Quality & Reliability
Proven Performance
Tau Power lambda sensors undergo rigorous testing to ensure compliance with global automotive standards including IATF16949 and OBD requirements. Every sensor is validated for electromagnetic compatibility, environmental durability, and long-term reliability.
Global Standards Compliance
- Euro VI emission standards
- China VI emission standards
- BS VI (India) emission standards
- OBD II requirements
- ISO and SAE specifications
Protector Options (LD6000)
Protector D1 - Fast Response
Optimized for applications requiring maximum responsiveness with response times as low as 60ms. Ideal for performance-oriented applications where rapid feedback is critical.
Protector D3 - Enhanced Protection
Designed for harsh operating environments with additional protection against contaminants and mechanical stress. Response times up to 250ms with superior durability.
Wideband Advantages (LD6549)
Extended Measurement Range
Unlike 2-state sensors that detect only stoichiometric conditions, the LD6549 measures across the full lambda range from rich (0.65) to lean (infinity), enabling:
- Precise fuel trim adjustment across all operating conditions
- Support for advanced combustion strategies
- Improved emissions control throughout the operating envelope
- Enhanced diagnostic capabilities
- Compatibility with modern control algorithms
Control Unit Integration
The LD6549 is designed to work with industry-standard control units including CJ125 and CJ135, ensuring seamless integration with existing engine management systems.
Why Choose Tau Power Lambda Sensors?
Advanced Technology
Our planar ZrO2 sensors represent the latest advancement in oxygen sensing, delivering superior accuracy, faster response, and longer service life compared to traditional thimble-type sensors.
Application Flexibility
With three distinct models covering 2-state and wideband applications, we provide solutions for every engine control requirement from basic catalyst monitoring to advanced fuel management.
Quality Manufacturing
Manufactured in our state-of-the-art Pune facility with fully automated production lines and complete traceability through ERP+MES+WMS systems.
Technical Support
Our engineering team provides comprehensive support for sensor selection, integration guidance, and troubleshooting to ensure optimal performance in your application.
LD6000
Planar Oxygen Sensor
Complete specifications, dimensions, and electrical characteristics
LD6549
5-Wire Wideband Oxygen Sensor
Wide-band measurement specifications and control unit compatibility
Custom Solutions
Need a lambda sensor tailored to your specific application? Our engineering team can customize connector types, cable lengths, probe configurations, and software parameters to meet your exact requirements.