1.General Introduction
Yokogawa DO402G dissolved oxygen analyzer converter is a 4 wire type with high flexibility, reliability and low maintenance, accepts inputs from both galvanic and polar graphic sensors. Percent saturation, mg oxygen/l water, and ppm DO can be displayed and transmitted. Compensation for atmospheric pressure altitude, salinity and temperature are included for the best accuracy of measurement.
2.General Specifications
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Items
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Description
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Input ranges
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Dissolved Oxygen: 0- 50 mg/l (ppm)
Temperature : 0- 50 ºC (32- 122 ºF)
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Span
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DO concentration: minimum: 1 mg/l (ppm); maximum: 50 mg/l (ppm)
% saturation : minimum: 10 %; maximum: 300 %
Temperature : minimum: 25 ºC (77 ºF); maximum: 50 ºC (122 ºF)
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Transmission signals
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Two isolated outputs of 0/4-20mA DC with common negative. Maximum load 600 Ω. Auxiliary output can be chosen from temperature, DO, PI control, table, burn up (22mA) or burn down (0 or 3.5mA) to signal failure
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Temperature compensation
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0-50 ºC,
Sensor types: Pt100, Pt1000, PB36 ,22k NTC
Automatic or Manual temperature compensation.
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Display
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Custom liquid crystal display, with a main display of 3 1/2 digits 12.5mm high.
Message display of 6 alphanumeric characters, 7 mm high.
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Contact outputs
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Four (4) SPDT relay contacts with LED indicators.
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Power supply
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Voltage ratios (Applicable range):100 V (85 to 115 V) AC, 115 V ( 97.8 to 132.2 V) AC, 230 V (195.5 to 264.5 V) AC
Supply frequency rating (Applicable range): 50 / 60 Hz (± 5%)
Power consumption: 10 VA maximum for steady operation
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Environment and operational conditions
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Ambient temperature: -10 to 55℃ (-14 to 131℉)
Storage temperature: -30 to 70℃ (-22 to 158℉)
Humidity: 10 to 90 % RH at 40℃ (100℉) (non-condensing)
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3.Model Selection
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Main Code
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Suffix Codes
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Description
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DO402G
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Dissolved Oxygen Converter
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Type
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-1
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General
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Power Supply
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-1
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115V +/-15% AC, 50/60 Hz
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-2
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230V +/-15% AC, 50/60 Hz
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-5
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100V +/-15% AC, 50/60 Hz
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Language
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-E
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English
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-J
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Japanese
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/U
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Pipe and wall mounting hardware
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/PM
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Panel mounting hardware
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/H3
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Hood for sun protection(Carbon steel)
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/H4
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Hood for sun protection(Stainless steel)
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/SCT
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Stainless steel tag plate
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/ANSI
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1/2NPT
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/AFTG
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G 1/2
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/X1
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Epoxy baked finish
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4.External Dimensions
