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Detector de gaz metan

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Am gasit un detector de gaz metan (rusesc, cred ca se folosea in mina) si as dori ajutor in gasirea unor informatii suplimentare (descriere, manual de utilizare si service, eventual o schema electrica).

 

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Multumesc anticipat pentru ajutor.

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In principiu, aceste detectoare constau dintr-o punte echilibrata, unde un rezistor era un filament incins cat sa nu se arda. In momentul in care un gaz combustibil ajungea pe suprafata acestui filament, temperatura acestuia se marea, implicit si rezistenta, dezechilibrand puntea. In acest mod functionau si analizoarele de gaze folosite pentru reglarea carburatiei prin anii '50.

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