---
title: OHC-800 Explosion-Proof Gas Calorimeter and Riken Keiki Gas Detectors Used in e-Methane Production Demo at Expo 2025 Osaka, Kansai, Japan
description: Riken Keiki technology revealed new insights into Tutankhamun’s golden mask, solving part of a mystery over 3,000 years in the making.
---

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

# [OHC-800 Explosion-Proof Gas Calorimeter and Riken Keiki Gas Detectors Used in e-Methane Production Demo at Expo 2025 Osaka, Kansai, Japan](https://global.rikenkeiki.co.jp/blog/ohc-800-explosion-proof-gas-calorimeter-and-riken-keiki-gas-detectors-used-in-e-methane-production-demo-at-expo-2025-osaka-kansai-japan)

 Written by [admin](https://global.rikenkeiki.co.jp/blog/author/admin) | March 23, 2026 7:48:44 AM Z

 

[View full post](https://global.rikenkeiki.co.jp/blog/ohc-800-explosion-proof-gas-calorimeter-and-riken-keiki-gas-detectors-used-in-e-methane-production-demo-at-expo-2025-osaka-kansai-japan)

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