Oxygen-Sensor-M10-Thread

Supported Applications

The Sensore Oxygen Sensor M10 Thread SO-D1-XXX-AXXXC series is designed for the measurement of oxygen (O₂) concentration using limiting current zirconium dioxide sensor technology. The product overview describes these sensors as an in-situ solution offering stable characteristics with minimal interference from other gases and negligible pressure influence at atmospheric pressure.

Operating Conditions & Performance

The series covers measurement ranges from 10 ppm O₂ to 96.0 % O₂, configured across six specific sensor part numbers (SO-D1-001 through SO-D1-960). Accuracy varies by range: ± 20 ppm O₂ for the lowest range up to ± 1.00 % O₂ for the highest range. Reproducibility is documented as < 10 ppm O₂ for the low-range sensor and < 0.2 % O₂ for the high-range sensor.

Performance specifications include a response time (t90) of < 5 sec and a warm-up time minimum of 30 s. The maximum permissible operating temperature is 200 °C, limited by the cable assembly; however, the housing surface temperature remains below 70 °C during operation. Sensors meet vibration resistance requirements per European Norm EN60068-2-6 (Sinusoidal vibration tests). Typical lifetime (MTTF) is stated as 10 years.

Measurement Ranges and Accuracy

• SO-D1-001: 10 ppm O₂ - 1000 ppm O₂; accuracy ± 20 ppm O₂
• SO-D1-010: 0.01 % O₂ - 1.0 % O₂; accuracy ± 100 ppm O₂
• SO-D1-020: 0.01 % O₂ - 2.0 % O₂; accuracy ± 200 ppm O₂
• SO-D1-050: 0.05 % O₂ - 5.0 % O₂; accuracy ± 500 ppm O₂
• SO-D1-250: 0.10 % O₂ - 25.0 % O₂; accuracy ± 0.25 % O₂
• SO-D1-960: 1.00 % O₂ - 96.0 % O₂; accuracy ± 1.00 % O₂

Electrical Characteristics

Sensor bias voltage ranges from 0.7 to 1.6 volts depending on the model, with a heating voltage of 4.1 volts (application dependent). Power consumption is approximately 1.8 watts. The cold resistance at 25°C is R(25°C) = 3.25 Ω ± 0.25 Ω.

Configuration Options

The series utilizes a screw-mounted housing with an M 10 * 1 mm process connection and sintered metal construction. Overall dimensions are L tot.= 43 mm, featuring a sintered metal top Ø12 mm, L= 20 mm SW10.

Outputs and Electronics

The sensor provides an analog current output (e.g., 15 μA - 30 μA or 150 μA - 250 μA depending on the range). Optional electronics control boards are available to provide industry standard outputs including:

• 0-5VDC
• 4-20mA
• Digital RS232 outputs
• Digital I/O open collector outputs

A custom electronics board is also listed as an option. The standard electrical connection uses a Rast 2,5 plug keyring with Teflon isolation rated for temperature stability up to 250 °C.

Power Supply and Cabling

The system requires a power supply of 6-25VDC (Nominal 12VDC 0.5A). Cable lengths are available in configurations such as A100C (100 mm) and A300C (300 mm), with operating temperatures up to 200 °C.

Key Product Differences

Variants within the SO-D1-XXX-AXXXC series are distinguished primarily by their measuring range, which dictates the sensor part number suffix and corresponding output current span. For example, the SO-D1-960 model operates with a 15 μA - 30 μA output at 20.9 % O₂ (air), whereas lower-range models like SO-D1-001 operate in the 150 μA - 250 μA range.

Cable length variations are indicated by the model suffix: A100C denotes a 100 mm cable, and A300C denotes a 300 mm cable. All variants share the same M 10 * 1 mm thread connection and sintered metal housing design.

Notes indicate that operation outside the specified measuring range can cause permanent damage to the electrode. Additionally, operating temperature is limited by the cable assembly or the use of an optional Teflon filter.