Dissolved Oxygen Meter
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Showing 241–249 of 249 results
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | Pro20i |
| Instrument Type | Portable |
| Measurement Principle | Polarographic Electrochemical Probe |
| DO Range | 0–50 mg/L |
| Accuracy | ±0.2 mg/L (at 0–20 mg/L) |
| Temperature Range | −5 to 55 °C |
| Temp Accuracy | ±0.3 °C |
| Pressure Range | 53–133 kPa |
| Pressure Accuracy | ±0.4 kPa |
| Resolution (DO) | 0.01 or 0.1 mg/L (selectable) |
| Resolution (Temp) | 0.1 °C |
| Resolution (Pressure) | 0.01 kPa |
| Data Storage | 50 sets |
| IP Rating | IP67 |
| Drop Test | 1 m |
| Battery Life | 400 h (2 × C-cell alkaline) |
| Certifications | RoHS, CE, WEEE, IP67 |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Product Origin | Imported |
| Model | 626250-50 |
| Instrument Type | Laboratory |
| Measurement Principle | Fluorescence Lifetime Quenching (Non-consumptive Optical Sensing) |
| DO Range | 0.00–50.00 mg/L (0–500% saturation) |
| Accuracy | ±0.1 mg/L or ±1% of reading (0–20 mg/L) |
| Resolution | 0.01/0.1 mg/L (selectable) |
| Temperature Range | 5–70 °C |
| Temp Accuracy | ±0.2 °C |
| Barometric Pressure Range | 50–110 kPa |
| Pressure Accuracy | ±0.2 kPa (0–50 °C) |
| Response Time | T90 = 25 s, T95 = 45 s |
| Calibration | Single-point or two-point (including zero) for DO |
| Compliance | RoHS, CE, WEEE, C-Tick, VCCI, IP67, MIL-STD-810G drop-tested (1 m), ISO 9001-compatible GLP logging |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | ProSolo |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence-based Optical Sensing |
| DO Range | 0–50 mg/L (0–500% air saturation) |
| DO Accuracy | ±0.1 mg/L |
| DO Repeatability | ≤±0.5% |
| Temperature Range | –5 to 70 °C |
| Temperature Accuracy | ±0.2 °C |
| Ingress Protection | IP67 |
| Battery Life | Up to 48 h (rechargeable Li-ion) |
| Data Storage | >100,000 readings |
| Calibration Records | 400 entries |
| Compliance | EPA-approved method for BOD testing |
| Cable Options | 1–100 m (standard: 4 m) |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | YSI ROX |
| Measurement Principle | Fluorescence Lifetime Detection |
| DO Range (Air Saturation) | 0–500% |
| Resolution (Air Saturation) | 0.1% |
| Accuracy (0–200%) | ±1% of reading or ±1% air saturation, whichever is greater |
| Accuracy (200–500%) | ±15% of reading |
| DO Range (mg/L) | 0–50 mg/L |
| Resolution (mg/L) | 0.01 mg/L |
| Accuracy (0–20 mg/L) | ±1% of reading or ±0.1 mg/L, whichever is greater |
| Accuracy (20–50 mg/L) | ±15% of reading |
| Membrane Life | Up to 12 months |
| Flow Independence | Yes |
| Zero-Point Calibration | Supported |
| H₂S Resistance | Yes |
| Compatibility | Fully compatible with YSI ProDSS and EXO platforms (via optical port), YSI 6-Series multiparameter sondes |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | YSI-85 |
| Cable Length Options | 3 m, 7.5 m, 15 m, 30 m |
| Temperature Compensation | Automatic |
| Salinity Compensation Range | 0–80 ppt |
| Barometric Pressure Compensation Range | 0–3,000 m |
| Conductivity Reference Temperature | Adjustable between 15–25 °C |
| Conductivity Temperature Coefficient | Adjustable 0–4 %/°C |
| DO Range Selection | Automatic |
| Conductivity Range Selection | Automatic or Manual |
| Power Supply | Six AA alkaline batteries (~100 hours operation) |
| Ingress Protection | Exceeds IP65 |
| Dimensions | 24.1 cm (L) × 8.9 cm (W) × 5.6 cm (H) |
| Weight | 0.77 kg (with 3 m cable) |
| Probe Type | Integrated or interchangeable D-series probe (YSI-85D variant) |
| Connector | MIL-SPEC (MS) waterproof, field-serviceable |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST809B-DO660 |
| Measurement Principle | Fluorescence Quenching at 470 nm excitation |
| Range | 0–20 mg/L (standard), 0–50 mg/L or 0–20,000 ppb (trace) |
| Accuracy | ±0.2 mg/L (0–20 mg/L) |
| Resolution | 0.01 mg/L or 1 ppb |
| Operating Temperature | −5 to 50 °C |
| IP Rating | IP68 |
| Submersion Depth | Up to 30 m |
| Compensation | Automatic temperature, barometric pressure, and salinity compensation |
| Output Interfaces | RS485 (Modbus RTU), 4–20 mA analog |
| Response Time (t₉₀) | ≤30 s |
| Fluorescent Cap Lifetime | 1–3 years |
| Drift | <1% per year |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST809B-DO660 |
| Measurement Range | 0–20 mg/L DO / 0–200% saturation |
| Accuracy | ±0.1 mg/L (0–10 mg/L), ±0.2 mg/L (10–20 mg/L) |
| Temperature Compensation | 0–60 °C (automatic) |
| Response Time (t₉₀) | ≤60 s |
| Output Signals | 4–20 mA analog + RS485 digital (Modbus RTU) |
| Power Supply | AC 220 V ±10% or DC 24 V |
| Operating Environment | 0–50 °C, ≤90% RH (non-condensing) |
| Installation Options | Submersible, Flow-through, Pipe-mount |
| IP Rating | IP68 (sensor), IP65 (transmitter) |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST809B-DO660 |
| Measurement Principle | Fluorescence Quenching (Pt-porphyrin sensor) |
| Excitation Wavelength | 470 nm |
| Emission Detection | Phase-shift analysis of red fluorescence |
| Range | 0–20 mg/L (0–20,000 ppb) |
| Accuracy | ±0.2 mg/L (0–20 mg/L), ±1 ppb + 2% (ppb range) |
| Resolution | 0.01 mg/L or 1 ppb |
| Response Time (t₉₀) | ≤30 s |
| Operating Temperature | −5 to 50 °C |
| IP Rating | IP68 |
| Submersible Depth | Up to 30 m |
| Compensation | Automatic temperature, atmospheric pressure, and salinity compensation |
| Output | RS485 (Modbus RTU), 4–20 mA analog |
| Sensor Lifetime | 1–3 years (fluorescent cap) |
| Drift | <1% per year |
| Calibration | Air-saturated water auto-calibration |
| Installation Options | Immersion, flow-through, buoy-mounted |
| Brand | YST |
|---|---|
| Origin | Liaoning, China |
| Model | YST809B-DO660 |
| Measurement Range | 0.00–20.00 mg/L DO |
| Accuracy | ±0.5% FS |
| Fluorescent Cap Lifetime | ≥12 months (typical operation) |
| Temperature Compensation | Automatic, 0–50 °C |
| Enclosure Rating | IP68 |
| Communication Interface | RS485 |
| Power Supply | AC 220 V or DC 12 V (solar-compatible) |
| User Interface | Chinese LCD, one-button calibration |