OCIEngine PRO methane

Miniaturized infrared spectroscopy sensors dedicated to methane gas measurement.

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 methane.

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 Methane Sensor

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Technical specifications

OCIEngine PRO Methane datasheet

METHANE DETECTION – MODEL NUMBER CO000031

Unit of measurement	ppm
Measurement range	From 0 to 5000 ppm
Measurement accuracy (max error with 60sec integration time) Conditions: 50% RH, 23°	20 ppm + 5% of reading

SAMPLING CHARACTERISTICS

Sampling period	125ms
Response time	38s (τ=63%)
Pressure range	Minimal relative pressure at measuring cell inlet port: 0.3 millibars Maximal relative pressure at measuring cell inlet port: 10 millibars
Flow rate range	From 0,1 to 1,5 L/min
Humidity	< 100% relative humididy (RH), not condensing

ELECTRICAL CHARACTERISTICS

Supply voltage	3,7 VDC min – 5,5 VDC max
Input current	1,5 A max
Communication interface	RS232 protocol (others on demand) x3 Pico-SPOX MOLEX connector (2, 3 and 5 contacts)
Discover our evaluation kit to help you pre-integrate and test the sensor in your systems

ENVIRONMENTAL CONDITIONS

Operating conditions	From 0°C to 50°C
Storage	From -20°C to 70°C
Pressure	800 – 1150 mbar
Typical starting time at 23°C	1 minutes (30 minutes at full spec)