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DO402G Dissolved Oxygen Converter

Brand: Yokogawa Electric Corporation

Flexibility, reliability and low maintenance are among the benefits provided by the EXA DO402G dissolved oxygen converter. 

Designed to meet the exacting requirements of measuring dissolved oxygen in the modern industrial environment, it contains many features to ensure the best precision whatever the application. 

The DO402G accepts inputs from both galvanic and polarographic 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.
Features
  • Versatile sensor inputs
  • On-line sensor checking monitors integrity of membrane
  • Event logbook in software
  • Four fully configurable SPDT contact outputs
  • Two fully configurable mA outputs
  • Built-in PI controller
  • Easy to use EXA control panel

Specifications

Accuracy

  • ± 0.05 mg/L or ± 0.5 % of Full Scale whichever is greater
  • ± 0.3° C (± 0.54° F) - Pt2000, 22k NTC, PB36
  • ± 0.4° C (± 0.72° F) - Pt100

Alarm

  • High/Low

Ambient Temperature Range

  • -10° to 55° C (14° to 131° F) - Ambient Operating Temperature

Applications

  • Industrial Applications

Approvals & Certifications

  • CSA C22.2 No. 94.2, CAN/CSA 61010-1
  • EMC EN 61326-1 Class A, EN 61326-2-3, EN 61000-3-2 Class A, EN 61000-3-3, RCM: EN 61326-1 Class A, Korea Electromagnetic Conformity, Standard Class A
  • UL Standard No. 61010-1, 50E

Burn-Out

  • Burn Down 0/3.5 mA to Signal Failure
  • Burn Up 22 mA

Cable Entry

  • Six PG 13.5 Nylon Glands

Conduit Connection

  • 1/2” NPT - Adapter
  • G 1/2” - Adapter

Consumption

  • 10 VA for Steady Operation - Power Consumption

Cover Material

  • Flexible Polycarbonate Window

Delay Time

  • 0 to 200 seconds - Relay

Diameter

  • 0.24” to 0.47” (6 to 12 mm) - Cable Outside Diameter

Display

  • 0.27” (7 mm) High - Message Display
  • 0.49” (12.5 mm) High - Main Display
  • 3-1/2-Digits - Main Display
  • 6 Alphanumeric Characters, 7 mm High - Message Display
  • LCD Display

Electrical Connectors

  • 26 to 12 AWG (0.13 to 4 mm²)
  • Cable Terminals up to 2.5 mm² Finished Wires

Electrical Contacts

  • Normally Closed & Normally Open

Electrical Rating

  • 100 VA, 250 Vac, 5 A, Max.
  • 250 Vdc, 5 A, 50 W, Max.

Enclosure Finish

  • Epoxy Baked Finish
  • Moss Green (Munsell 06 GY3.1/2.0) - Cover Color
  • Off-White (Munsell 2.5Y8.4/1.2) - Case Color

Environmental Protection

  • IP65
  • NEMA 3S
  • NEMA 4X

Frequency

  • 50/60 Hz (± 5 %)

Function

  • 3-Digits Programmable Password Protection

Humidity

  • 10 to 90 % Relative Humidity, Non-Condensing

Input

  • 0 to 50 μA to for Galvanic Sensors
  • 0 to 500 NA to for Polarographic or Optical Sensors

Linearity

  • ± 0.03 mg/L or ± 0.5 % of Full Scale whichever is greater
  • ± 0.3° C (± 0.54° F) - Pt2000, 22k NTC, PB36
  • ± 0.4° C (± 0.72° F) - Pt100

Load

  • 600 ohms, Max.

Materials of Construction

  • Carbon Steel - Hood
  • Stainless Steel - Mounting Bracket, Hood, Tag Plate

Measuring Range

  • 0 to 50 mg/L (ppm) - Dissolved Oxygen

Mounting

  • Panel Mount
  • Pipe
  • Wall Mounted

Output

  • 0-20 mA
  • 4 SPDT Relays with LED Indicators
  • 4-20 mA

Power Requirement

  • Lithium Batteries

Power Supply

  • 100 Vac (85-115 Vac)
  • 115 Vac (97.8-132.2 Vac)
  • 230 Vac (195.5-264.5 Vac)

Pulse Range

  • 5 to 100 seconds

Repeatability

  • ± 0.03 mg/L or ± 0.5 % of Full Scale whichever is greater
  • ± 0.1° C (± 0.18° F) - Pt2000, 22k NTC, PB36, Pt100

Resistance

  • 10 ohms or Less - on Resistance for Contact Input
  • 100 kiloohms or more - Off Resistance for Contact Input

Response Time

  • 10 seconds for 0 to 90 %

Sensor, Probe Type

  • 22k NTC
  • PB36
  • Pt100
  • Pt1000

Span - Maximum

  • 300 % Saturation
  • 50 mg/L (ppm) - Dissolved Oxygen (DO) Concentration
  • 50° C (122° F)

Span - Minimum

  • 1 mg/L (ppm) - Dissolved Oxygen (DO) Concentration
  • 10 % Saturation
  • 25° C (77° F)

Storage Temperature

  • -30° to 70° C (-22° to 158° F)

Temperature Range

  • 0° to 50° C (32° to 122° F)

Turn-On Time

  • 0.5 seconds or more - for Contact Input
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