VIKING-DO400 Benchtop DO Meter (DO/Temp, DO Saturation)
VIKING-DO400 Benchtop DO Meter
OVERVIEW
VIKING-DO400 is a bench-top dissolved oxygen meter designed for high-confidence measurements in water & wastewater, environmental labs, aquaculture and education. It offers a bright 7.0″ LCD, Auto-Read / Timed / Continuous reading modes, automatic/manual temperature compensation, auto-hold endpoint detection and GLP-compliant data storage (500 results per parameter). The instrument supports calibration in air-saturated water or zero oxygen, with auto barometric compensation and manual salinity factor correction.
With its polarographic DO sensor, the DO400 delivers accurate measurements of DO concentration (0–99.99 ppm) and saturation (0–600%). Whether you’re monitoring water quality in environmental labs, wastewater treatment, or aquaculture, the VIKING-DO400 provides dependable performance.
VIKING-DO400 Benchtop DO Meter – 7.0″ LCD, DO concentration (0–99.99 ppm) and saturation (0–600%), polarographic sensor, 500 GLP data sets per parameter, automatic barometric compensation, manual salinity correction, IP54 splash protection. Supplied with DO electrode PRO6163 (with calibration solution, electrolyte, 3 membrane caps) and EHO-5 electrode stand.COLO.Science · Reliable dissolved oxygen measurement for water quality analysis.
COLO.SCIENCE KNOWLEDGE
Understanding Dissolved Oxygen – The Key to Water Quality
Explore COLO.Science articles on dissolved oxygen measurement, polarographic sensor principles, calibration techniques, and practical tips for accurate DO analysis in environmental and industrial applications.
Product Overview
VIKING-DO400 Benchtop DO Meter is designed for professionals requiring accurate and reliable dissolved oxygen measurements in laboratory and field settings. Its 7.0″ LCD with intuitive interface simplifies operation, while the polarographic sensor delivers precise DO concentration and saturation readings. With GLP‑compliant data storage (500 sets per parameter) and multiple reading modes, the DO400 is a versatile tool for water quality analysis in environmental, industrial, and educational applications.
Configuration notice — delivery depends on selected options
DO meters may be delivered in different configurations depending on the application and selected accessories. The official PDF technical specification defines the exact configuration, included components and available options for each model/variant. Content shown on this website is provided for general informational purposes only and may not represent the final delivered configuration. Specifications may change without notice.
Key Features
Auto‑Read / Timed / Continuous
ATC / MTC
Auto‑hold endpoint
GLP data (500 sets/param)
USB & RS-232
Factory reset
IP54 protection
Air/Zero calibration
Auto barometric comp.
Manual salinity corr.
Measurement
High‑Precision DO Measurement with Advanced Software
Intelligent Operating System
User, calibration, method, and data management with GLP compliance for full traceability.
Multiple Reading Modes
Auto-read (Fast/Medium/Slow), timed-read, and continuous-read modes with status prompts (Reading, Stable, Locked) and auto-hold function.
Environmental Compensation
Automatic barometric pressure compensation (kPa, mbar, Torr, Atm) and manual salinity correction for accurate readings in various conditions.
DO Measurement (Concentration)
- Range: 0.00–99.99 ppm
- Resolution: 0.01 ppm
- Accuracy: ±0.10 ppm (0–50.00), ±0.50 ppm (50.0–99.99)
- Sensor type: Polarographic
- Calibration: Air-saturated water or zero point
- Barometric compensation: Auto (kPa, mbar, Torr, Atm)
- Manual salinity correction: Yes
DO Saturation & Temperature
- Saturation range: 0.0–600.0%
- Saturation resolution: 0.1%
- Saturation accuracy: ±2.0%
- Temperature range: -10.0 to 135.0 °C (14–275 °F)
- Temperature resolution: 0.1 °C / °F
- Temperature accuracy: ±0.1 °C
- ATC / MTC compensation
Data & Connectivity
- Data storage: 500 results per parameter (GLP)
- Reading modes: Auto, Timed, Continuous
- Reading prompts: Reading, Stable, Locked
- Auto‑hold endpoint detection
- USB (PC) and RS-232 (printer) connectivity
- Factory reset, backlight, auto shutdown
Technical Specifications (VIKING-DO400)
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Model | VIKING-DO400 | Parameters | DO / Temp (DO Saturation) |
| Sensor Type | Polarographic | DO range | 0.00–99.99 ppm |
| DO resolution | 0.01 ppm | DO accuracy | ±0.10 ppm (0–50.00), ±0.50 ppm (50.0–99.99) |
| Calibration points | Air-saturated water / zero | Barometric compensation | Yes (auto) |
| Salinity correction | Manual | DO saturation range | 0.0–600.0% |
| DO saturation resolution | 0.1% | DO saturation accuracy | ±2.0% |
| Temperature range | -10.0 to 135.0 °C / 14.0–275.0 °F | Temperature resolution | 0.1 °C / °F |
| Temperature accuracy | ±0.1 °C | Reading modes | Auto (F/M/S), Timed, Continuous |
| Reading prompts | Reading, Stable, Locked | Temperature compensation | ATC, MTC |
| Data storage | 500 results per parameter (GLP) | GLP features | Yes |
| DO with Temp. probe | 4-pin aviation connector | USB | PC |
| RS-232 | Printer | Backlight | Yes |
| Auto shutdown | 1–60 min / Off | IP rating | IP54 |
| Date & Time | Yes | Power | AC adapter, 100-240V / DC 20V output |
| Dimensions (device) | 242 × 195 × 68 mm | Net weight | 900 g (1.98 lb) |
| Carton dimensions | 370 × 320 × 220 mm | Shipping weight | 2.5 kg |
Note: For the complete specification table, please refer to the VIKING-DO400 catalog (PDF). Specifications subject to change without notice.
Standard Delivery
- Polarographic DO electrode PRO6163 (with zero oxygen calibration solution, DO electrolyte, and 3 membrane caps)
- Electrode stand EHO-5
- AC adapter (100‑240 V AC input, DC 20 V output)
- USB cable for PC connection
- Multilingual user manual and quick-start guide
Note: Exact kit contents may vary by region; please refer to the current catalog and quotation for final configuration.
Benchtop Meter Series — Model Comparison
Compare COLO benchtop DO meters by display, range, data storage and key features.
| Parameter | VIKING‑DO300 | VIKING‑DO400 | VIKING‑DO600 | VIKING‑DO800 |
|---|---|---|---|---|
| Display | 6.0″ mono LCD | 7.0″ high‑res LCD | 7.0″ color touchscreen | 7.0″ color touchscreen |
| DO range | 0–20 mg/L | 0–99.99 ppm | 0–99.99 mg/L | 0–99.99 mg/L |
| Saturation range | 0–200% | 0–600% | 0–600% | 0–600% |
| Data storage | 200 sets | 500 sets/param | 1000 GLP sets/param | 1000 GLP sets/param |
| Barometric compensation | Manual | Auto | Auto (multiple units) | Auto |
| Connectivity | — | USB, RS-232 | USB, RS-232 | USB, RS-232 |
VIKING-DO400 — Benchtop Dissolved Oxygen Meter
A versatile, high‑performance benchtop DO meter with 7.0″ LCD, polarographic sensor, GLP data logging and IP54 protection — supported by COLO.Science.
COLO.Science · Reliable dissolved oxygen measurement for water quality analysis.
