OCIEngine CO2 sensor & PRO

Miniaturized infrared spectroscopy sensors dedicated to carbon dioxide measurement.

Carbon dioxide, with the molecular formula CO2, is a colorless and inert gas. It is composed of two oxygen atoms and one carbon atom. It occurs naturally in the atmosphere. Carbon dioxide is generally not toxic except when concentrations become high.

What is it?

OCIEngine is an infrared spectrometer that measures Volatile Organic Compounds (VOC) in the air. It is specific to analyse a molecule of interest, such as carbon dioxide.

 

The measuring chamber of the sensor is crossed by infrared radiation. When the air is introduced into this chamber, the molecules of interest absorb a part of the radiation, which reduces the intensity of the optical signal. The concentration of the gas can therefore be deduced according to the Beer-Lambert’s physical law.

NDIR CO2 Sensor

NDIR CO2 PRO Sensor

Looking for custom gas measurement solutions for your project?

Technical

specifications

 


OCIEngine CO2 datasheet

 
 
CO2 DETECTION – MODEL NUMBER CO000023 (Test conditions: 23°C, 50%RH, 1013 mbars)
Unit of measurement% (others on resquest : ppm, mmHg)
Measurement range0-7%
Measurement accuracy0,02% + 2% reading
 
SAMPLING CHARACTERISTICS
Sampling period8 readings per seconds
Response time3s, at a flow rate of 1L/min
 
ELECTRICAL & MECHANICAL CHARACTERISTICS
Supply voltage3,7 VDC min – 4,2 VDC max
Input current1,5 A max
Dimensions and Weight21 x 21 x 80 mm, 17g
 
ENVIRONMENTAL CONDITIONS
Operating conditions – TemperatureFrom 0°C to 55°C
Operating conditions – Humidity< 100% relative humidity (RH), not condensing
Storage conditions – Temperature-10°C to +70°C

 

Sensor
architecture

 

Mechanical
drawings

 

Technical

specifications

 


OCIEngine PRO CO2 datasheet

 
 
CO2 DETECTION – MODEL NUMBER CO000025 (Test conditions: 23°C, 50%RH, 1013 mbars)
Unit of measurement%
Measurement rangeFrom 0 to 10%
Repeatability (3σ)0.5% Full Scale + 1% reading
Linearity error1% reading
Long term drift (span)1% reading
Pressure effect0.05% reading /mbar
Temperature effect0.1% reading / K
Detection limit (3σ)0.5% full scale
Cross sensitivity (3σ)Consult manufacturer
 
SAMPLING CHARACTERISTICS
Sampling period125 ms
Response time1s (τ=63%), at a flow rate of 1 L/min
Pressure rangeMinimal relative pressure at measuring cell inlet port: 0.3 mbar
Maximal relative pressure at measuring cell inlet port: 10 mbar
Flow rate rangeFrom 0,1 to 1,5 L/min
 
ENVIRONMENTAL CONDITIONS
Operating conditionsFrom 0°C to 40°C for breath analysis
From -20°C to 70°C for other applications
StorageFrom -20°C to 70°C
Typical starting time at 23°C1 minute (30 minutes at full specifications)
Humidity< 100% relative humidity (RH), not condensing
 
ELECTRICAL CHARACTERISTICS
Supply voltage3,7 VDC min
5,5 VDC max
Input current1,5 A max
Communication interfaceRS232 protocol: Voltage level: ±5,5V ; 3 wires mode
x3 Pico-SPOX MOLEX connector (2, 3 and 5 contacts)
 
MECHANICAL CHARACTERISTICS
Dimensions125 x 30 x 22mm
Weight~20 g
External casingPlastic
Fixing part2 tapped holes for M3 fixing. Length max=5mm

 

Sensor
architecture

 

 

Mechanical
drawings

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