INFWIN DigiGas-OX Oxygen Concentration and Partial Pressure Sensor

INFWIN DigiGas-OX Oxygen Concentration and Partial Pressure Sensor

MCCI P/N
123004238
INFWIN P/N
DigiGAS-OX-AAAB002
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$ 259.00
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Contact sales

The INFWIN DigiGas-OX is an oxygen sensor with SDI-12 or RS485/Modbus-RTU output, measuring ambient oxygen partial pressure (ppO2) and concentration using luminescence quenching - an optical technique, not electrochemical. Power supply, output interface, connector type, and cable length are configurable via ordering code - the default variant (DigiGas-OX-AAAB002) ships with a 0–300 mbar (0–25%) range, RS485/Modbus-RTU output, a cold-pressed terminal connector, and a 2 m cable.

Alongside oxygen, the sensor reports temperature and barometric pressure, which factor into the concentration calculation. Reverse power protection and built-in TVS/ESD protection are included.

Key Features

  • Optical oxygen sensing: Built around an SST oxygen sensor using luminescence quenching, not an electrochemical cell
  • Long sensor life: Rated for more than 2 years of service, maintenance-free
  • Triple measurement: Oxygen partial pressure/concentration, temperature, and barometric pressure
  • Digital output: SDI-12 (V1.3) for universal datalogger compatibility and low-power use, or RS485/Modbus-RTU for long cable runs or multi-sensor networks, both with built-in surge protection
  • Compact size: 111 × 25.5 mm sensor body
  • Reverse power protection: Built-in TVS/ESD protection
  • Connector options: Cold-pressed terminal or stripped & tinned lead wires
  • Configuration utility: SensorOneSet software (RS485) or SensorOneSetSDI12 software (SDI-12) included for sensor configuration
  • Cable length: 2 m standard; custom lengths available, up to 5 m maximum

Applications

  • Scientific research
  • Air conditioning and ventilation control
  • Routine weather monitoring
  • Environmental monitoring
  • Suggested for indoor applications such as greenhouse, buildings, subway, etc.

Note: Not recommended for outdoor use

Important Notes

  • Oxygen concentration (%) accuracy depends on both the oxygen partial pressure accuracy and the barometric pressure accuracy - it is not a single fixed figure.
  • Rated operating temperature range for the sensor is narrower than most of INFWIN's other outdoor sensors: +10°C to 45°C.
  • Custom cable lengths are limited to a maximum of 5 meters for this sensor.
  • IP50 rated - protected against dust ingress and some direct contact, but not rated for washdown, submersion, or outdoor exposure to rain.
  • Wall mounting installation only - not designed for burial or immersion.
  • Operating environment must be non-condensing.

Specifications

Oxygen
Partial pressure range 0–300 mbar
Partial pressure resolution 0.1 mbar
Partial pressure accuracy <2% FS
Concentration range 0–25%
Concentration resolution 0.01%
Concentration accuracy Determined by the combined accuracy of oxygen partial pressure and barometric pressure
Temperature
Range −10°C to +60°C
Resolution 0.1°C
Accuracy ±2°C
Barometric Pressure
Range 500–1200 mbar
Resolution 1 mbar
Accuracy ±5 mbar
Electrical
Output interface RS485 (Modbus-RTU) or SDI-12, V1.3 (selectable via ordering code)
Power supply 9–28V DC
Quiescent/average current SDI-12: <10 µA @ 12V DC; RS485: <10 mA @ 12V DC
Measuring current <20 mA @ 12V DC; 1000 ms measurement interval
Mechanical
Dimensions 111 × 25.5 mm (sensor body, length × diameter)
IP rating IP50
Connector Cold-pressed terminal or stripped & tinned lead wires (selectable via ordering code)
Cable length 2 m standard; custom length available, max 5 m
Installation Wall mounting
Environmental
Operating conditions +10°C to 45°C; 0–95% humidity, non-condensing

Ordering Code Guide

Code 1: Product Series DigiGas-OX DigiGas-OX oxygen partial pressure and concentration sensor
Code 2: Range and Accuracy A 0–300 mbar (0–25%), <2% FS (see specification table for full accuracy)
Code 3: Power Supply A
X		 9–28V DC
Customize
Code 4: Output Interface A
B		 RS485 (Modbus-RTU)
SDI-12
Code 5: Connector B
C		 Cold-pressed terminal
Stripped & tinned lead wires
Code 6: Cable Length 002
XXX		 2 meters
Custom (XXX = length in meters, max 5 m)

Default Variant: DigiGas-OX-AAAB002

Measuring parameters Oxygen partial pressure/concentration, temperature, and barometric pressure
Range and accuracy 0–300 mbar (0–25%), <2% FS
Power supply 9–28V DC
Output interface RS485, Modbus-RTU
Connector Cold-pressed terminal
Cable length 2 meters

Custom variants (power supply, output interface, connector, cable length) are available; contact us to discuss your requirements.

Technical Documents

Modbus is a registered trademark of Schneider Electric. SDI-12 is a trademark of the SDI-12 Support Group. INFWIN is a registered trademark of Dalian Endeavour Technology Co., Ltd. MCCI and MCCI Catena are registered trademarks of MCCI Corporation. All other trademarks are the property of their respective owners.