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Riken Keiki OX-04 Single Gas Detector (Oxygen)
The Riken Keiki OX-04 is a compact portable oxygen gas detector designed for accurate O₂ monitoring in marine, offshore, industrial, and confined-space applications.
The Riken Keiki OX-04 Single Gas Detector is a compact, lightweight portable oxygen (O₂) gas detector designed for continuous personal safety monitoring in hazardous industrial, marine, and confined-space environments. Utilizing a high-performance electrochemical sensor with diffusion sampling, the OX-04 provides accurate real-time oxygen concentration measurement while offering exceptional durability, long battery life, and reliable alarm protection. Its intrinsically safe design, IP66/IP67 protection, and compact form factor make it ideal for professionals working in marine, offshore, oil & gas, utilities, manufacturing, and confined space entry applications.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Riken Keiki OX-04 Single Gas Detector |
| Brand | Riken Keiki |
| Model | OX-04 |
| Product Type | Portable Single Gas Monitor |
| Target Gas | Oxygen (O₂) |
| Detection Method | Diffusion Type |
| Detection Principle | Potentiostatic Electrolysis Method |
| Sensor Type | Electrochemical Oxygen Sensor (Riken Durable R Sensor) |
| Measurement Range | 0 to 25.0% Vol |
| Display Range | 0.0 to 40.0% Vol |
| Resolution | 0.1% Vol |
| Alarm Set Points | Low: 18.0% Vol; Low-Low: 18.0% Vol; High: 25.0% Vol; Over Range: 40.0% Vol |
| Alarm Types | Gas Alarm and Fault Alarm |
| Alarm Indicators | Flashing lamp, intermittent buzzer, blinking gas concentration display, vibration alarm |
| Display | Digital LCD display with gas concentration indication |
| Operation | Simple portable one-button operation |
| Power Source | 2 × AAA Alkaline Batteries |
| Continuous Operating Time | Approximately 3,000 hours |
| Battery Replacement | Replaceable AAA battery design |
| Operating Temperature Range | -40°C to +60°C (without sudden temperature changes) |
| Temporary Operating Temperature | Approx. -20°C to +50°C (15-minute temporary use) |
| Operating Humidity Range | 0–95% RH (non-condensing) |
| Temporary Humidity Range | 10–90% RH (15-minute temporary use, non-condensing) |
| Operating Pressure Range | 80–120 kPa |
| Ingress Protection Rating | IP66/IP67 equivalent |
| Explosion Protection | Intrinsically Safe |
| IECEx Certification | Ex ia II C T4 Ga (AAA alkaline battery) |
| ATEX Certification | II 1G Ex ia II C T4 Ga (AAA alkaline battery) |
| Other Approvals | Japan Ex, ATEX, IECEx, EN 50104, China Ex |
| CE Marking | EMC / ATEX / RoHS compliant |
| Dimensions | Approx. 54 (W) × 67 (H) × 24 (D) mm |
| Weight | Approx. 93 g |
| Sensor Warranty | 3 Years |
| Applications | Confined Space Entry, Oxygen Deficiency Monitoring, Industrial Safety, Oil & Gas, Chemical Plants, Shipyards, Wastewater Treatment, Utilities, Maintenance Work |
Frequently Asked Questions
What is the standard delivery lead time for Riken Keiki OX-04 Single Gas Detector (Oxygen)?
For standard stocked units, we provide same-day or next-day launch delivery to Singapore anchorages, Jurong port, and shipyards. For international vessels, we dispatch worldwide via DHL/FedEx Express air freight with 2 to 4 business days delivery.
Does this equipment include calibration certificates?
Yes. All portable and fixed detectors, UTI meters, and monitoring instruments supplied or calibrated by Ship Care Service include manufacturer inspection reports and traceable international calibration test certificates.
Are genuine spare parts and replacement sensors available for this model?
Yes, we maintain an extensive inventory of original manufacturer sensors, PCB motherboards, sampling pumps, filters, and sealing kits specifically for Riken Keiki.
How can I request a commercial quotation?
Simply fill out the Request a Quote form on the right or click "Chat on WhatsApp". Our marine sales engineering desk provides firm commercial quotes with lead times within 2 to 4 hours.
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