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Straight and folded infrared paths inside compact CO2 sensing cells

2026-10-13 No Comments Sensor One Stop

Optical Path Length in CO2 Sensors: Range, Sensitivity and Size

Learn how NDIR optical path length affects low-CO2 signal, high-concentration range, cell geometry and module size, and which specifications to compare.

Two optical channels in an infrared gas sensing assembly

2026-10-13 1 Comment Sensor One Stop

NDIR Reference Channels: What They Correct and What They Cannot

Understand the optical reference in NDIR CO2 sensors: common-mode drift, shared-path contamination, temperature and pressure limits, and calibration implications.

An optical CO2 module and compact VOC sensor illustrated as different measurement channels

CO2 Sensor vs VOC Sensor: Direct CO2, eCO2 and TVOC Explained

Compare direct CO2 measurement with VOC signals, eCO2 estimates and TVOC outputs. Learn what each channel measures and how to verify an air quality monitor.

A CO2 monitor and gas sample illustration introducing concentration units

2026-10-12 4 Comments Sensor One Stop

CO2 ppm Meaning: Percent Conversion and Sensor Ranges

Understand CO2 ppm, mole and volume fractions, ppm-to-percent conversion, wet and dry reporting bases, and what a sensor's range does and does not establish.

CO2 measurement illustrated across room monitoring, process sampling and fixed detection

2026-10-12 3 Comments Sensor One Stop

CO2 Measurement: Methods, Sensor Selection and Reliable Readings

Choose CO2 measurement methods and instruments for room air, process samples or gas detection. Compare ranges, sampling, calibration and useful data records.

Unbranded CO2 monitor and optical sensor module beside a technical specification sheet

2026-10-12 1 Comment Sensor One Stop

How to Read a CO2 Monitor Accuracy Specification

Read CO2 monitor accuracy specifications correctly: calculate ppm plus percent of reading, distinguish full-scale error and resolution, and compare operating conditions.

Conceptual illustration of a gas sensor module, handheld detector, water vapor and condensation

2026-10-12 2 Comments Sensor One Stop

How Humidity Affects Gas Sensor Readings

Learn how humidity affects gas sensor response, wet-basis concentrations and condensation, and what to check when selecting or troubleshooting a gas detector.