---
title: "We successfully measured gas concentrations inside sewer pipes using a drone equipped with the compact gas detector \"GW-3.\""
description: Ensure worker safety in sewer construction with dual safety measures against oxygen deficiency and hydrogen sulfide poisoning. Learn about advanced gas detection solutions and protocols.
---

[blog ](https://global.rikenkeiki.co.jp/blog)

# [We successfully measured gas concentrations inside sewer pipes using a drone equipped with the compact gas detector "GW-3."](https://global.rikenkeiki.co.jp/blog/we-successfully-measured-gas-concentrations-inside-sewer-pipes-using-a-drone-equipped-with-the-compact-gas-detector-gw-3)

 Written by [admin](https://global.rikenkeiki.co.jp/blog/author/admin) | April 1, 2026 5:47:08 AM Z

[View full post](https://global.rikenkeiki.co.jp/blog/we-successfully-measured-gas-concentrations-inside-sewer-pipes-using-a-drone-equipped-with-the-compact-gas-detector-gw-3)

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