Test & measurement instruments

Portable 4 Gas Detectors — LEL, O2, CO and H2S

(7 products in collection)
View as

7 products

Portable four-gas detectors in this collection specify the combustible-gas LEL or EX channel, oxygen, carbon monoxide and hydrogen sulfide combination. Compare the complete channel set first, followed by the measuring ranges and required sampling method. The available products include diffusion instruments and internal-pump or separate pump-package choices.

Confirm the supplied configuration on the selected product page. A pump changes how a sample reaches the sensors, while the named gas channels determine what the instrument measures. Review maintenance, calibration and sample-line requirements for your task. For other gas combinations, browse all gas detectors and monitors.

Need help choosing an instrument?

Tell us what you need to measure, the range and the application. You can also browse our measurement guides.