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Digitally displays 3 elements simultaneously
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Auto calibration of battery capacity and O2 sensor and auto zero adjustment of Combustible gas sensor and CO sensor when power is switched ON
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2 power system (dry batteries and AC 100V)
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Trend analysis is available with a data logger function
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Model
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MD-811
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Measuring Gas
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Oxygen
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Combustible Gases
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Carbon monoxide
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Measuring Principle
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Galvanic cell
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Catalytic combustion
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Chronoamperometry
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Measuring Range
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0 - 50.0 vol%
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0 - 100%LEL
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0 - 300ppm
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Resolution
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0.1 vol%
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1%LEL
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1ppm
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Accuracy
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Within ±0.5 vol% at below 25.0 vol%/Within ±3.0 vol% at over 25.0 vol%
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Within ±10%LEL at below 100%LEL
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Within ±10ppm at 0 - 100ppm/±10% of indicated value at over 101ppm
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Display Method
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Digital liquid crystal
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Alarm Setting
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At below 18%
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At over 20%LEL
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At over 50ppm
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Alarm Method
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LED lamp, LED display and buzzer
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Response Time
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90% of the response within 25 seconds (excluding gas inlet tube)
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Power Source
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4 size D alkaline batteries/AC 100V (adaptor)
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Continuous Operation
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Up to 35 hours with alkaline batteries
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Operating Temperature Range
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Temperature : -10 - 40℃, Humidity : 30-80%RH (non condensing)
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Dimensions
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230(W)×165(H)×130(D)mm
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Weight
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2.8kg (including dry batteries and sensors)
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Standard Accessories
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Sampling tube (8m) with float-type sampler, leather case
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