- 2 step alarm and alarm contact output
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Combination with Hot wire semiconductor method detector head enables gas leak detection for low concentration gas
SPECIFICATIONS| Model
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FA-490
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Measuring Gas
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Combustible gas in the air
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Hydrogen in the air
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Methane in the air
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Organic solvent in the air
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Detection Principle
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Catalytic combustion method (Note 1)
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Hot wire semiconductor method (Note 2)
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Hot wire semiconductor method (Note 2)
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Hot wire semiconductor method (Note 2)
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Measuring Range
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0 - 100%LEL
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0 - 2,000ppm
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0 - 5,000ppm
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0 - 500ppm
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Accuracy
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Within ±25% of the setting value
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Within ±25% of the setting value (within a range of 1000ppm from 200ppm)
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Within ±25% of the setting value (within a range of 1000ppm from 500ppm)
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Within ±25% of the setting value (within a range of 200ppm from 50ppm)
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Display Method
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4-digit LED digital
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Alarm Method
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Red LED lights intermittently and buzzer sounds intermittently
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Alarm Setting
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Adjustable (2 step alarm)
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Failure display
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Red LED lights intermittently and buzzer sounds intermittently
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Power Source
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AC100V±10V, 50/60Hz (AC220V as extra option)
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Alarm contact output
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Gas alarm : 1a or 1b contact, Faulty alarm : 1a or 1b contact, AC125V, 0.6A (Resistance load)
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Analog output
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4?20mA
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Detection Point
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1 point
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Operating Temperature Range
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Temperature: -10 - 40℃
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Installation
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Wall mount type (Panel mount type is optional)
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Dimensions
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120(W)×205(H)×69(D)mm
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Weight
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0.9kg
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