IR SENS SZ LITE NDIR Gas Diffusion Sensors

Gas Detection the Smarter Way | High Precision & Durable Sensors

The SZ-Lite infrared gas sensor is engineered for seamless integration into diverse gas detection systems, ensuring precise, dependable measurement of CO, CO2, CH4, and numerous other gas concentrations with high quality and accuracy.

 Principle of NDIR Gas Sensor

“The basic measurement principle is called nondispersive infrared (NDIR) gas detection, which is based on the absorption of infrared radiation at certain gas specific wavelengths in accordance with the Beer-Lambert law. The most common gases that are measured with this NDIR principle are Carbon Dioxide (CO2), Methane (CH4) and Hydrocarbons (HC). Also, gases like Carbon Monoxide (CO), Nitrous Oxide (N2O) and Sulphur Hexafluoride (SF6) are possible to detect.”

Working principle of Non-Dispersive Infrared (NDIR)

“A Non-Dispersive Infrared (NDIR) gas sensor working principle is based on the property of certain molecules to absorb light at specific wavelengths (or “color”) that are characteristic of their molecular structure. The absorption characteristics are defined as molecular vibrational energies associated with stretching, bending or rotations and depends upon the molecular structure of the gas. For IR energy to be absorbed, that is for vibrational energy to be transferred to the molecules, the frequency must match the frequency of the mode of vibration. Thus, specific molecules absorb IR radiation at precise frequencies and each gas has a unique and well-defined light absorption curve in the infrared spectrum.

When IR radiation passes through a volume containing a specific gas, only those frequencies matching the vibration mode are absorbed, while the rest of the light is transmitted without interference. For this reason, the presence of a particular gas gives rise to characteristic absorption bands.” Features of the Infrared Gas Diffusion Sensors include pre-calibration, compact design, 3.3 VCC supply voltage. sensor life greater than five years and low drift. Applications include Oil& Gas, Energy, Medical, IoT, Industrial HVAC and Hogh Voltage Switchgear. 

Filter
Infrared Gas Sensor Sulphur Hexafluoride SF6 1000
Infrared Gas Sensor Sulphur Hexafluoride SF6 1000
Sensizone
SZ-LITE-SF6-1000
32 mm Sulpher Hexafluoride ≥ 1000 PPM 1 PPM Less than 5% of reading or ±30 PPM whichever is greater 1 $405.00
Infrared Gas Sensor Refrigerant 1000 PPM
Infrared Gas Sensor Refrigerant 1000 PPM
Sensizone
SZ-LITE-R134a-1000
32 mm Refrigerant ≥ 1000 PPM 1 PPM Less than 5% of reading or ±30 PPM whichever is greater 1 $404.00
Infrared Gas Diffusion Sensor Nitrous Oxide 1000 PPM
Infrared Gas Diffusion Sensor Nitrous Oxide 1000 PPM
Sensizone
SZ-LITE-N2O-1000
32 mm Nitrous Oxide ≥ 1000 PPM 1 PPM Less than 5% of reading or ±20 PPM whichever is greater 1 $362.00
Infrared Gas Sensor Hydrocarbon 100% LEL
Infrared Gas Sensor Hydrocarbon 100% LEL
Sensizone
SZ-LITE-HC-100%
32 mm Hydrocarbon 100% LEL 0.1% LEL Less than 5% of reading or ±0.5% LEL whichever is greater 1 $362.00
Infrared Gas Sensor Carbon Dioxide 100% V/V
Infrared Gas Sensor Carbon Dioxide 100% V/V
Sensizone
SZ-LITE-CO2-100%
20 mm Carbon Dioxide 100% V/V 0.1% V/V Less than 2% of reading or ±0.5% V/V whichever is greater 1 $241.00
Infrared Gas Sensor Methane CH4 :100% LEL
Infrared Gas Sensor Methane CH4 :100% LEL
Sensizone
SZ-LITE-CH4-100% LEL
32 mm Methane 100% LEL 0.1% LEL Less than 5% of reading or ±0.5% LEL whichever is greater 1 $402.00
SZ-LITE-CH4-100% V/V
SZ-LITE-CH4-100% V/V
Sensizone
SZ-LITE-CH4-100%
32 mm Methane 100% V/V 0.1% V/V Less than 5% of reading or ±0.5% V/V whichever is greater 1 $288.00
Infrared Gas Sensor Carbon Dioxide 5% V/V
Infrared Gas Sensor Carbon Dioxide 5% V/V
Sensizone
SZ-LITE-C02-5%
20 mm Carbon Dioxide 5% V/V 0.01% V/V Less than 5% of reading or ±0.5% V/V whichever is greater 1 $240.00