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LuminOx Optical Oxygen Sensors

The low cost, low power and long life are what differentiates the LuminOx Optical Oxygen Sensors from other oxygen sensors.

Developed and manufactured by SST, the LuminOx family is a range of factory calibrated oxygen sensors which measure ambient oxygen levels using the principle of fluorescence quenching by oxygen. Oxygen sensing using this sensor enables oxygen concentration to be calculated.

The patented technology allows SST to produce a sensor that provides low power operation, while offering a much longer lifetime than electrochemical and galvanic sensors.

The LuminOx Optical Oxygen Sensors are internally temperature compensated meaning the customer does not need to consider this in their design. It also communicates directly to the customer’s UART so no signal conditioning circuitry is required.

LuminOx is a completely solid state sensor and contains no lead or liquid electrolytes. It is therefore 100% RoHS compliant. It also has virtually no cross sensitivity, allowing it to be used in applications where other technologies are unreliable due to the particular mix of gases present.

LuminOx measures the partial pressure of oxygen (ppO2) which, along with the internal sensor temperature is communicated serially to the host microcontroller. LuminOx is also available with an internal barometric pressure sensor. This enables oxygen concentration (%O2) to be calculated and transmitted, along with the ppO2, temperature and barometric pressure.

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Part Numbering Guide

TECHNICAL SPECIFICATIONS

Supply Voltage (Vs)

Supply Current (Is)

Output Type

Operating Temperatures

Storage Temperatures

Humidity

Barometric Pressure Range

4.5Vdc to 5.5Vdc

Less than 7.5mA (streaming one
sample per second),
Less than 20mA Peak

-30 to +60°C

-30 to +60°C

0-99% Rh (non condensing)

500-1200mbar

3.3V TTL level USART

OUTPUT VALUES

Oxygen Range

Oxygen Pressure Range

Response Time

Accuracy

ppO2

Temperature

Pressure

O2

Resolution

ppO2

Temperature

Pressure

O2

Lifetime

0-25% O2

0-300mbar ppO2

T90 Less than 30s (typical)

<2% FS

±5mbar

Indication only

Determined by ppO2 &
pressure accuracy

0.1mbar

0.1°C

1mbar

0.01%

>5 years

OUTLINE DRAWINGS

LOX-02-S Technical Drawing

ELECTRICAL INTERFACE

Lox connections
Pin

1

2

3

4

Designation

Vs (+5V)

GND (0V)

3.3V USART Sensor Transmit

3.3V USART Sensor Receive

FEATURES

  • Luminescence-based optical technology, NOT electrochemical
  • Factory calibrated
  • Extended temperature range
  • Maintenance free
  • Battery power usage
  • No need for additional electronics
  • Compact in size

BENEFITS

  • Long life, non-depleting technology
  • Low power
  • High accuracy
  • Low cost
  • RoHS compliant
  • Contains no hazardous materials
  • Full technical and application support available
  • This field is for validation purposes and should be left unchanged.