Hydrogen gas detector

Fixed hydrogen detector for battery and UPS rooms, electrolysers and fuel-cell enclosures. Round Ex d head with screwed lid, lid tag, LED and side gland; catalytic sinter or MEMS sensor with PTFE membrane pointing down, inside a hollow collector cone with calibration spout to catch rising lighter-than-air gas. mount ceiling hangs it from a beam clamp and drop rod on a stainless angle bracket (origin on the ceiling); wall puts it on a wall plate near the ceiling.

Installation

Copies safety/hydrogen-detector.tsx and the shared lib/ into src/components/deck-twin/. Needs three, @react-three/fiber and @react-three/drei. See installation for the manual route.

Usage

import { Canvas } from '@react-three/fiber'
import { OrbitControls } from '@react-three/drei'
import { Stage } from './components/deck-twin/lib/stage'
import { HydrogenDetector } from './components/deck-twin/safety/hydrogen-detector'

export default function Scene() {
  return (
    <Canvas shadows camera={{ position: [8, 5, 9], fov: 35 }}>
      <Stage>
        <HydrogenDetector />
      </Stage>
      <OrbitControls makeDefault />
    </Canvas>
  )
}

Props

P&ID

F&G or HVAC layout: a gas-detector symbol with H2 written beside it, placed at the ceiling high point of battery rooms, UPS rooms and electrolyser enclosures; on C&E charts an AT bubble with the % LEL set points.

tag GDHtag GDISA ATF&G layout convention (NFPA 170 / ISO 7240-style plan symbols; legends vary by company)

Hydrogen detectors sit at ceiling level (H2 is lighter than air); hydrocarbon point detectors in process areas are usually lower.

Gas detector datasheet (IEC 60079-29-1; IEC 62485-2 battery rooms) fields and the props they set

Mountingmount

Drop rod lengthdrop

Mounting heightheight

Sensor typesensor

Collector conecollector

Tag numbertag

Typical suppliers

Crowcon. The geometry is generic and sized from public standards. It is not vendor CAD.

For agents

Machine-readable entry with props, ranges, defaults and ports:

Or fetch /r/hydrogen-detector.json, or copy a ready-made instruction:

Add the Deck Twin "Hydrogen gas detector" component to this project. Run `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz add hydrogen-detector` (it copies the file and the shared lib into src/components/deck-twin/), then `npx -y https://decktwin.com/cli/deck-twin-0.2.2.tgz info hydrogen-detector` for its props, ranges and ports. Render <HydrogenDetector /> inside a React Three Fiber <Canvas shadows>, wrapped in <Stage> from src/components/deck-twin/lib/stage. Set props from my data (metres, NPS in inches, ASME class) and leave the rest at defaults. Install three, @react-three/fiber, @react-three/drei and @types/three if they're missing. Full guide: https://decktwin.com/skill/SKILL.md