A fixed detector watches one place around the clock and acts on its own relays. A portable detector goes with a person into places a fixed one cannot cover. They answer different questions, and most sites with a real gas hazard need both.
| Fixed detector | Portable detector | |
|---|---|---|
| Protects | A place, continuously | The person wearing it |
| Acts by | Relays to fans, valves and sirens, and a 4-20 mA or Modbus output | An alarm on the person |
| Record | Continuous, with remote alerts when connected to a controller | Logged on the device, downloaded later |
| Fits | Plant rooms, stores, enclosed areas with a known release point | Confined space entry, inspections, moving work |
A refrigeration plant, a chlorine store, a battery room: a fixed detector at the release point.
Tanks, pits, sewers: a portable detector on the person, every entry.
A fixed detector keeps the room safe to enter; a portable one protects the person once inside.
The gas detectors in our catalog are fixed detectors with two alarm relays, 4-20 mA and RS485 Modbus RTU, connected through Genesis to alerts and a record.
We do not offer portable detectors.
No. Its relays act locally on its own set points. The network adds the remote alert and the record.
More than thirty, each with its own sensing cell on the same detector body.
Tell us what has to be measured or switched, where, and what it has to report into. We say which approach fits, including when it is not ours.
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