The ERUN-SP8-ASC-A5 portable dissolved oxygen meter delivers accurate 0-20 mg/L DO measurement with fluorescence sensor technology – no membrane replacement, no electrolyte, zero oxygen consumption during testing, and no flow-rate requirement. CE, ISO 9001 and RoHS certified for worry-free global export.
Traditional electrochemical dissolved oxygen meters require regular membrane changes, electrolyte refills, and frequent calibration. The ERUN-SP8-ASC-A5 adopts advanced fluorescence (optical) measurement principle, eliminating these maintenance burdens entirely. The sensor uses a fluorescent material that responds exclusively to oxygen molecules – common interferents like sulfides, heavy metals, and chlorides in water do not affect measurement accuracy.
Optical dissolved oxygen sensors provide response times under 90 seconds, compared to tens of minutes for some traditional methods. The global optical dissolved oxygen meter market was valued at $356.8 million in 2025 and is projected to reach $547.2 million by 2032 at a 6.3% CAGR – reflecting accelerating global adoption of fluorescence-based DO measurement technology.
The ERUN-SP8-ASC-A5 measures dissolved oxygen from 0-20 mg/L (0-20 ppm or 0-200%) with ±3% or ±0.3 mg/L accuracy, whichever is greater.
Measurement resolution reaches 0.01 mg/L for precise readings. The built-in NTC temperature compensation function ensures stable results across varying water temperatures. Temperature measurement ranges from 0-40°C with ±0.5°C accuracy. The sensor housing uses SUS316L stainless steel for corrosion resistance, while the portable host features ABS+PC construction.
The instrument stores over 100,000 data points internally and allows easy data export via USB interface. Automatic air calibration and sample calibration options provide flexibility for different field conditions.
The ERUN-SP8-ASC-A5 achieves IP67 dust/water resistance for the main unit and IP68 for the dissolved oxygen sensor – submersible and rugged for any water quality testing scenario.
The 3.5-inch color display with an intuitive menu interface makes operation straightforward even for non-technical users. Ergonomic curve design with a rubberized non-slip hand strap ensures comfortable grip, even in wet conditions. The built-in rechargeable battery charges directly via USB – no battery removal required.
Standard configuration includes a 3-meter sensor cable, extendable upon request. The main unit features intelligent sensor recognition that automatically adapts to the connected sensor and reading interface, ensuring data accuracy and intuitive display. Operating temperature range spans -15 to 60°C for storage and 0 to 45°C for operation.
The ERUN-SP8-ASC-A5 carries CE certification, ISO 9001 quality management certification, and RoHS compliance – meeting the regulatory requirements for export to European and international markets.
CE certification confirms compliance with EU health, safety, and environmental protection standards. ISO 9001 certification demonstrates our commitment to consistent quality management throughout production. RoHS compliance ensures the instrument is free from restricted hazardous substances, aligning with global environmental regulations.
The global portable dissolved oxygen meters market is experiencing steady growth driven by stringent environmental regulations, technological advancements, and cross-sector adoption across wastewater treatment, aquaculture, and environmental monitoring. With increasing investment in water quality monitoring and digital transformation initiatives across Americas and Europe, certified instruments from reliable manufacturers are in strong demand.
From wastewater treatment to aquaculture, food processing to pharmaceutical manufacturing – the ERUN-SP8-ASC-A5 serves every industry requiring precise dissolved oxygen measurement.
In wastewater treatment, DO monitoring is critical for biological oxidation processes and regulatory compliance. In aquaculture, maintaining optimal dissolved oxygen levels (typically 6.5-8.0 mg/L for healthy aquatic life) directly impacts stock survival and growth rates. In food and beverage production, DO measurement ensures product quality and shelf life. In environmental monitoring, portable DO meters enable rapid field assessment of surface water and groundwater quality. The instrument also supports agricultural irrigation water quality assessment and pharmaceutical process water monitoring.
Parameter | Specification |
|---|---|
Measurement Range (DO) | 0-20 mg/L; 0-20 ppm; 0-200% |
Measurement Range (Temperature) | 0-40°C |
Accuracy (DO) | ±3% or ±0.3 mg/L (whichever is greater) |
Accuracy (Temperature) | ±0.5°C |
Resolution | 0.01 mg/L |
Calibration | Automatic air calibration, sample calibration |
Sensor Material | SUS316L stainless steel |
Host Material | ABS+PC |
Protection Class | Main unit IP67, Sensor IP68 |
Cable Length | 3 meters (extendable) |
Data Storage | >100,000 data points |
Sensor Dimensions | 25.0mm × 127mm |
Sensor Weight | 0.3 KG |
Host Dimensions | 203 × 100 × 43mm |
Host Weight | 0.5 KG |
Fluorescence dissolved oxygen meters eliminate the three biggest headaches of traditional DO measurement: membrane replacement, electrolyte maintenance, and flow-rate dependence.
Traditional electrochemical sensors consume oxygen during measurement, requiring sample stirring or flow to obtain accurate readings. The fluorescence method measures oxygen through optical luminescence – no oxygen is consumed, and no minimum flow rate is required. This makes fluorescence DO meters ideal for low-flow environments, stagnant water bodies, and applications where stirring would disturb the sample.
The sensor requires no membrane replacement or electrolyte refilling, dramatically reducing total cost of ownership and field maintenance time. Long-term stability is excellent, and sensor replacement is simple and cost-effective when eventually needed.
Q: What certifications does the ERUN-SP8-ASC-A5 hold?
A: The instrument is CE certified, ISO 9001 certified, and RoHS compliant – meeting international standards for quality and environmental safety.
Q: How often does the sensor need calibration?
A: Automatic air calibration and sample calibration options provide flexibility. The fluorescence sensor maintains excellent long-term stability, significantly reducing calibration frequency compared to electrochemical sensors.
Q: Can this meter measure in saltwater or freshwater?
A: Yes. The ERUN-SP8-ASC-A5 measures dissolved oxygen in both freshwater and saltwater applications across 0-20 mg/L range.
Q: Is the device suitable for field use?
A: Absolutely. IP67 main unit protection, IP68 submersible sensor, ergonomic design, and USB rechargeable battery make it ideal for field deployment in any weather condition.
Q: What is the minimum order quantity and lead time?
A: Please contact our sales team at nawei@xayingrun.com for customized quotes and delivery schedules.
Erun Environmental – your trusted partner in water quality testing solutions, delivering CE, ISO 9001, and RoHS certified instruments to customers worldwide.
