Dissolved Oxygen Meter
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| Brand | TimePower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic (China-Made) |
| Model | TP150 / TP151 / TP152 |
| Instrument Type | Online |
| Measurement Principle | Electrochemical Clark-type Polarographic Sensor |
| Measurement Ranges | (0.0–100) µg/L, (100–1000) µg/L, (1.00–20.00) mg/L |
| Accuracy | ≤1.5% FS |
| Repeatability | 0.05% |
| Detection Limit | ±2 ppb (0 µg/L baseline) |
| Brand | TimePower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic (China-made) |
| Model | TP150 / TP151 / TP152 / TP153 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Polarographic Electrochemical Probe (Clark-type membrane electrode) |
| Measurement Range | (0.0–100) µg/L, (100–1000) µg/L, (1.00–20.00) mg/L (auto-ranging) |
| Accuracy | ≤1.5% FS |
| Resolution | 0.1 µg/L (0.0–100 µg/L), 1.0 µg/L (100–1000 µg/L), 0.01 mg/L (1.00–20.00 mg/L) |
| Response Time T₉₀ | <5 min at 25 °C |
| Temperature Compensation Range | (0–60.0) °C |
| Sample Water Temperature Range | (5–45) °C |
| Ambient Operating Temperature | (0–60) °C |
| Relative Humidity | ≤90% RH (non-condensing) |
| Enclosure Rating | IP65 |
| Analog Output Options | (0–10) mA, (0–20) mA, or (4–20) mA (selectable) |
| Relay Alarm Output | 220 VAC / 3 A |
| Power Supply | AC (85–265) V, 45–65 Hz |
| Power Consumption | ≤15 W |
| Dimensions (H×W×D) | 145 mm × 120 mm × 150 mm |
| Panel Cutout | 138 mm × 138 mm |
| Weight | 0.64 kg |
| Brand | Timepower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Origin Category | Domestic |
| Model | TP152 |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence Quenching (Optical) |
| Measurement Range | 0.00–20.00 mg/L |
| Accuracy | ±1.5% F.S. |
| Repeatability | ≤1% |
| Detection Limit | ±2 ppb |
| Response Time (T90) | <5 min at 25 °C |
| Resolution | 0.01 mg/L |
| Temperature Compensation Range | 0–60.0 °C |
| Sample Temperature Range | 5–60 °C |
| Ambient Temperature Range | 5–45 °C |
| Humidity | ≤90% RH (non-condensing) |
| Storage/Transport Temp | −25–55 °C (electrode >0 °C) |
| Enclosure Rating | IP65 |
| Display | 128×64 LCD, Chinese interface |
| Power Supply | AC 85–265 V, 45–65 Hz |
| Power Consumption | ≤15 W |
| Dimensions (H×W×D) | 145×120×150 mm |
| Panel Cutout | 138×138 mm |
| Weight | 0.64 kg |
| Output Signals | 0–10 mA / 0–20 mA / 4–20 mA (selectable, load <300 Ω) |
| Relay Output | AC 220 V / 3 A or DC 30 V / 3 A |
| Data Storage | Cyclic memory with >10-year data retention after power loss |
| Brand | Timepower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | TP153 |
| Instrument Type | Online |
| Measurement Principle | Fluorescence-based (Optical) Method |
| Measurement Range | 0.00–20.00 mg/L |
| Accuracy | ±0.2 mg/L |
| Repeatability | 0.05% |
| Detection Limit | ±2 ppb |
| Output Signals | 0–10 mA / 0–20 mA / 4–20 mA (selectable, load < 300 Ω) |
| Relay Alarm | AC 220 V / 3 A or DC 30 V / 3 A |
| Power Supply | AC 85–265 V, 45–65 Hz |
| Power Consumption | ≤15 W |
| Display | 128×64 dot-matrix LCD with Chinese interface |
| Resolution | 0.01 mg/L |
| Response Time (T90) | <5 min at 25 °C |
| Temperature Compensation Range | 0–60.0 °C |
| Sample Temperature Range | 5–45 °C |
| Ambient Operating Temperature | 5–45 °C |
| Ambient Humidity | ≤90% RH (non-condensing) |
| Storage & Transport Temperature | −25 to +55 °C (electrode must be stored above 0 °C) |
| Dimensions (H×W×D) | 98 mm × 130 mm × 98 mm |
| Panel Cutout | 94 mm × 94 mm |
| Weight | 0.5 kg |
| Data Storage | Cyclic memory with automatic overwrite |
| Power Failure Data Retention | >10 years |
| Brand | TimePower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic (China-Made) |
| Model | TP250 / TP350 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Polarographic Electrochemical Sensor (Clark-type with PTFE/PE Membrane) |
| Measurement Range | (0.00–100) µg/L, (100–1000) µg/L, (1.00–20.00) mg/L (auto-ranging) |
| Accuracy | ±1.0% FS |
| Repeatability | ≤1% |
| Resolution | 0.01 µg/L (0–100 µg/L), 1.0 µg/L (100–1000 µg/L), 0.01 mg/L (1.00–20.00 mg/L) |
| Response Time (T90) | <5 min at 25 °C |
| Operating Ambient Temperature | 5–45 °C |
| Sample Temperature Range | 5–45 °C |
| Power Supply | AC 85–265 V, 45–65 Hz |
| Power Consumption | ≤1 W |
| Dimensions | 285 × 60 × 255 mm |
| Display | 128 × 64 dot-matrix LCD with Chinese interface |
| Brand | Timepower |
|---|---|
| Origin | Beijing, China |
| Manufacturer | Timepower Co., Ltd. |
| Type | Portable |
| Measurement Principle | Fluorescence Quenching Method |
| Range | 0.00–20.00 mg/L |
| Accuracy | ±1.5% FS |
| Repeatability | ±1% |
| Detection Limit | 2 ppb |
| Resolution | 0.01 mg/L |
| Response Time (T90) | <5 min at 25 °C |
| Temperature Compensation | Pt1000 sensor, 0–60 °C |
| Sample Temp. Range | 5–60 °C |
| Operating Ambient | 5–45 °C, ≤90% RH (non-condensing) |
| Storage Temp. | −25 to +55 °C (electrode excluded |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Power Consumption | ≤0.5 W |
| Dimensions | 80 × 30 × 175 mm |
| Weight | 0.26 kg |
| Display | 128×64 dot-matrix LCD with Chinese interface |
| Data Storage | Cyclic memory with 10+ years offline retention (battery-backed) |
| Battery Life | Up to 8 hours continuous operation |
| Brand | Timepower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | TP251 Timepower |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence Quenching Method |
| Measurement Range | 0.00–20.00 mg/L |
| Accuracy | ±0.2 mg/L |
| Repeatability | ≤1% |
| Detection Limit | 2 ppb (typical baseline offset) |
| Resolution | 0.01 mg/L |
| Response Time (T90) | <5 min at 25°C |
| Temperature Compensation Range | 0.0–60.0°C |
| Sample Temperature Range | 5–60°C |
| Operating Ambient Temperature | 5–45°C |
| Relative Humidity | ≤90% RH (non-condensing) |
| Storage/Transport Temperature | −25–55°C (electrode ≥0°C) |
| Display | 128×64 dot-matrix LCD with Chinese interface |
| Power Supply | AC 220±22 V, 50±1 Hz |
| Power Consumption | ≤1 W |
| Battery Life | Up to 8 hours continuous operation |
| Dimensions | 80 × 30 × 175 mm |
| Weight | 0.26 kg |
| Output | 4–20 mA (load <300 Ω) |
| Relay Output | AC 220 V / 3 A or DC 30 V / 3 A |
| Data Storage | Cyclic memory with >10-year data retention after power loss |
| A/D Converter | 24-bit high-precision ADC |
| Brand | TimePower |
|---|---|
| Model | TP350 |
| Type | Portable Dissolved Oxygen Analyzer |
| Measurement Principle | Fluorescence Quenching |
| Range | 0.0–100 µg/L, 100–1000 µg/L, 1.00–20.00 mg/L (auto-ranging) |
| Accuracy | ±1.0% FS |
| Resolution | 0.1 µg/L (0–100 µg/L), 1 µg/L (100–1000 µg/L), 0.01 mg/L (1.00–20.00 mg/L) |
| Repeatability | ≤1% |
| Detection Limit | 0 µg/L ±2 µg/L |
| Response Time (T90) | <5 min at 25°C |
| Temperature Sensor | Pt1000 |
| Temp. Measurement Range | 0.0–99.9°C |
| Temp. Compensation Range | 0.1–80.0°C |
| Sample Temp. Range | 5–80°C |
| Ambient Temp. Range | 5–45°C |
| Humidity | ≤90% RH (non-condensing) |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Power Consumption | <0.5 W |
| Dimensions | 162 × 82 × 33 mm (L×W×H) |
| Weight | ~320 g |
| Display | 128×64 dot-matrix LCD, Chinese interface |
| Data Storage | Cyclic internal memory with >10-year data retention after power loss |
| Battery Life | Up to 8 hours continuous operation on full charge |
| Brand | Timepower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Portable |
| Measurement Principle | Electrochemical Clark-type Polarographic Sensor |
| Measurement Range | 0.0–100 µg/L (microgram per liter), auto-ranging up to 20.00 mg/L |
| Accuracy | ±1.0% FS |
| Repeatability | ≤1% |
| Detection Limit | ±2 ppb |
| Response Time (T90) | <5 min at 25 °C |
| Temperature Compensation Range | 0–60.0 °C |
| Sample Temperature Range | 5–45 °C |
| Environmental Operating Range | 5–45 °C, ≤90% RH (non-condensing) |
| Display | 128×64 LCD, Chinese interface |
| Power Supply | AC 85–265 V, 45–65 Hz |
| Power Consumption | ≤1 W |
| IP Rating | IP65 |
| Dimensions | 285 × 60 × 255 mm |
| Weight | 2.28 kg |
| Data Storage | Cyclic non-volatile memory, >10 years retention after power loss |
| Battery Life | Up to 8 hours continuous operation (internal rechargeable battery) |
| Brand | Timepower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | TP350 |
| Instrument Type | Portable |
| Measurement Principle | Electrochemical Clark-type Polarographic Sensor |
| Measurement Range | 0.0–100 µg/L |
| Accuracy | ±1.0% FS |
| Repeatability | ≤1% |
| Detection Limit | ±1.0% FS |
| Resolution | 0.1 µg/L (0–100 µg/L), 1.0 µg/L (100–1000 µg/L), 0.01 mg/L (1.00–20.00 mg/L) |
| Response Time (T90) | <5 min at 25 °C |
| Temperature Compensation Range | 0–60.0 °C |
| Sample Temperature Range | 5–45 °C |
| Operating Ambient | 5–45 °C, ≤90% RH (non-condensing) |
| Enclosure Rating | IP65 |
| Temperature Sensor | Pt1000 |
| Power Supply | AC 85–265 V, 45–65 Hz |
| Power Consumption | ≤1 W |
| Dimensions | 285 × 60 × 255 mm |
| Weight | 2.28 kg |
| Display | 128 × 64 LCD, Chinese interface |
| Data Storage | Cyclic memory with >10-year data retention after power loss |
| Battery Life | Up to 8 hours continuous operation (fully charged) |
| Brand | Timepower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | TP350 |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence Quenching Method |
| Measurement Range | 0.0–100 µg/L (trace mode), auto-ranging up to 20.00 mg/L |
| Accuracy | ±1.5% FS |
| Repeatability | ≤1% |
| Detection Limit | 2 ppt (0 ± 2 ppt) |
| Response Time (T90) | <5 min at 25 °C |
| Temperature Compensation Range | 0–60.0 °C |
| Sample Temperature Range | 5–45 °C |
| Environmental Operating Range | 5–45 °C, ≤90% RH (non-condensing) |
| Display | 128 × 64 LCD, Chinese interface |
| Power Supply | AC 85–265 V, 45–65 Hz |
| Power Consumption | ≤1 W |
| Dimensions | 285 × 60 × 255 mm |
| Weight | 2.28 kg |
| IP Rating | IP65 |
| Temperature Sensor | Pt1000 |
| Data Storage | Cyclic memory with >10-year retention after power loss |
| Battery Life | Up to 8 hours continuous operation |
| Resolution | 0.1 µg/L (0.0–100 µg/L), 1.0 µg/L (100–1000 µg/L), 0.01 mg/L (1.00–20.00 mg/L) |
| Brand | TimePower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | OEM Manufacturer |
| Instrument Type | Portable |
| Measurement Principle | Polarographic Electrochemical Sensor (Clark-type with PTFE/PE Membrane) |
| Measurement Range | 0.0–100 µg/L, 100–1000 µg/L, 1.00–20.00 mg/L (Auto-ranging) |
| Accuracy | ±1.0% FS |
| Repeatability | ≤1% |
| Detection Limit | ±2 ppb (0 µg/L baseline) |
| Response Time (T90) | <5 min at 25 °C |
| Temperature Compensation | Pt1000 sensor, 0–60.0 °C |
| Sample Temp. Range | 5–45 °C |
| Operating Environment | 5–45 °C, ≤90% RH (non-condensing) |
| IP Rating | IP65 |
| Power Supply | AC 85–265 V, 45–65 Hz |
| Power Consumption | ≤1 W |
| Dimensions | 285 × 60 × 255 mm |
| Weight | 2.28 kg |
| Display | 128 × 64 dot-matrix LCD, Chinese interface |
| Data Storage | Cyclic memory with >10-year non-volatile retention |
| Battery Life | Up to 8 hours continuous operation (internal rechargeable battery) |
| Resolution | 0.1 µg/L (0–100 µg/L), 1.0 µg/L (100–1000 µg/L), 0.01 mg/L (1.00–20.00 mg/L) |
| Brand | TimePower |
|---|---|
| Model | TP351 |
| Origin | Beijing, China |
| Manufacturer | TimePower Measurement & Control Co., Ltd. |
| Type | Polarographic Dissolved Oxygen Meter (Clark-type electrode) |
| Display | 128×64 dot-matrix LCD, Chinese interface |
| Measurement Range | 0.00–20.00 mg/L |
| Accuracy | ±1.5% F.S. |
| Resolution | 0.01 mg/L |
| Repeatability | ≤1% |
| Stability | ±1% F.S./4 h |
| Response Time (T90) | <5 min at 25 °C |
| Temperature Sensor | Pt100 |
| Temp. Measurement Range | 0.0–99.9 °C |
| Automatic Temperature Compensation Range | 0.1–60.0 °C |
| Sample Temperature Range | 5–60 °C |
| Operating Ambient | 5–45 °C, ≤90% RH (non-condensing) |
| Storage Temperature | −25–55 °C (electrode must be stored above 0 °C) |
| Power Supply | AC 220 V ±10%, 50 Hz ±1 Hz |
| Power Consumption | <5 W |
| Dimensions (L×W×H) | 225 mm × 210 mm × 260 mm |
| Weight | 1.5 kg |
| Standard Accessories | DO meter host, AC adapter, ppm-range polarographic DO electrode with YXI membrane cap, electrolyte refill solution (KCl-based), electrode stand |
| Brand | TimePower |
|---|---|
| Origin | Beijing, China |
| Manufacturer | TimePower Co., Ltd. |
| Type | Benchtop Laboratory DO Meter |
| Measurement Principle | Polarographic Electrochemical Sensor (Clark-type) |
| Range | 0.00–20.00 mg/L |
| Accuracy | ±0.2 mg/L (±1.5% F.S.) |
| Resolution | 0.01 mg/L |
| Repeatability | ≤1% RSD |
| Detection Limit | 2 ppb (O₂) |
| Response Time (T₉₀) | <5 min at 25°C |
| Temperature Compensation Range | 0.1–60.0°C |
| Sample Temp. Range | 5–60°C |
| Display | 128×64 dot-matrix LCD, Chinese interface |
| Power Supply | AC 220 V ±10%, 50 Hz, <5 W |
| Dimensions | 225 × 210 × 260 mm (L×W×H) |
| Weight | 1.5 kg |
| Brand | TriOS |
|---|---|
| Origin | Germany |
| Model | eCHEM DO |
| Type | Portable Optical Dissolved Oxygen Sensor |
| Measurement Principle | Luminescence-based (Optical Quenching) |
| Range | 0–20 mg/L (0–20 ppm, 0–200% saturation) |
| Accuracy | ±0.1 mg/L (±0.1 ppm, ±1% saturation) |
| Response Time (T90) | <60 s |
| Resolution | 0.01 mg/L |
| Temperature Compensation | NTC thermistor (0.01 °C resolution, ±0.5 °C accuracy) |
| Output Interface | RS-485 (Modbus RTU) |
| Power Supply | 12 V ±10%, 1 W |
| Cable Options | 2 m or 10 m polyurethane-sheathed |
| Pressure Rating | 5 bar |
| IP Rating | IP68 |
| Operating Temp | 0–50 °C |
| Storage Temp | −10–60 °C |
| Housing Material | Passivated Stainless Steel 316L (standard) / Titanium Alloy (marine version) |
| Membrane | Optically isolated silicone |
| Dimensions | 146 mm × 25 mm |
| Weight | 450 g (SS), 300 g (Ti) |
| Maintenance Interval | ≤0.5 h/month |
| Calibration Interval | Up to 2 years |
| Cross-Sensitivity | None for pH (1–14), CO₂, H₂S, SO₂ |
| Brand | VELP |
|---|---|
| Origin | Italy |
| Model | BOD10 |
| Instrument Type | Laboratory |
| Measurement Principle | Pressure-based Respirometric Method (Mercury-Free Electronic Transducer) |
| Measurement Ranges | 90, 250, 600, 999 mg/L BOD₅ |
| Data Logging Interval | 24 h (5-point profile over standard 5-day incubation) |
| Operating Duration | Configurable from 1 to 28 days |
| Power Supply | Dual Lithium-Ion Batteries (2-year service life) |
| Safety Rating | IEC 61010-1 Class III |
| Ingress Protection | IP54 per EN 60529 |
| Operating Temperature | −20 °C to +65 °C |
| Weight | 80 g |
| Enclosure Material | Stainless Steel (316) with Chemical-Resistant Coating |
| Sample Capacity | Simultaneous monitoring of up to 10 samples (BOD Sensor System 10 configuration) |
| Alarm Function | Automatic out-of-range alert |
| Compliance | ASTM D5210, ISO 5815-1:2019, APHA 5210B, EU Directive 2000/60/EC (Water Framework Directive) |
| Brand | VELP |
|---|---|
| Origin | Italy |
| Model | FTC90 Series |
| Internal Volume | 64 L / 196 L |
| Temperature Range | 3–50 °C |
| Temperature Control Accuracy | ±0.5 °C |
| Temperature Resolution | 0.1 °C |
| Control System | Microprocessor-based PID control with forced-air circulation |
| Data Logging | PC connectivity via RS232/USB, compatible with VELP专用 software for time-temperature profiling and programmable cycles |
| Power Consumption | 350 W |
| Compliance | Designed for ISO 5815-1:2017, ISO 5815-2:2017, and APHA Standard Methods 5210B (BOD₅) |
| Origin | UK |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | Waterwatch2420 |
| Pricing | Available Upon Request |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | CellOx 325 |
| Measurement Principle | Polarographic Electrochemical Sensor |
| Measurement Range | 0–50 mg/L |
| Temperature Range | 0–50 °C (NTC probe) |
| Electrode Body Material | POM |
| Cathode Material | Gold |
| Cable Length | 1.5 m (standard, IP67 connector) |
| Electrolyte Service Life | Up to 6 months |
| Zero Drift | Negligible (no zero-point calibration required) |
| Oxygen Consumption Rate | 0.008 µg·h⁻¹·(mg·L⁻¹)⁻¹ |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | DurOx325-3 |
| Measurement Principle | Electrochemical (Polarographic) |
| IP Rating | IP68 (2 bar) |
| Cable Length | 3 m |
| Temperature Compensation | Integrated Dual-Temperature IMT Sensor |
| Zero Drift | None |
| Electrolyte Service Life | Up to 6 months |
| Storage/Calibration Kit | OxiCal®-D included |
| Protective Cap | SK-D standard |
| Application Class | Laboratory & Field-Portable Instruments |
| Compliance | Designed for ASTM D888, ISO 5814, EN 25814, and EPA Method 360.1 |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | FDO 925 |
| Instrument Type | Portable |
| Measurement Principle | Optical Fluorescence Quenching |
| Range | 0–20 mg/L DO |
| Accuracy | ±0.5% of reading ±0.05 mg/L DO |
| Repeatability | ≤0.1% of reading |
| Detection Limit | 0.01 mg/L DO |
| Response Time (t₉₀) | <30 s |
| Temperature Range | 0–50 °C |
| IP Rating | IP68 (2.5 bar) |
| Cable Options | 1.5 / 3 / 6 / 25 m |
| Electrode Body Material | POM |
| Cap Material | PVC, silicone, PMMA |
| Temperature Sensor | Integrated NTC30 (30 kΩ at 25 °C) |
| Weight | 180 g (with 3 m cable) |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | FDO925 |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence Quenching |
| Measurement Range | 0.00–20.00 mg/L |
| Response Time (T99) | <60 s |
| Temperature Range | 0–50.0 °C ± 0.2 °C |
| DO Accuracy | ±0.5% of reading |
| Saturation Range | 0–200.0 % |
| Partial Pressure Range | 0–200 hPa ± 0.5% of reading |
| Electrode Material | POM body with stainless steel tip |
| Dimensions | 140 mm ± 1 mm (L) × 15.3 mm ± 0.2 mm (Ø) |
| Cable Options | 1.5 m, 3 m, 6 m, 25 m (Kevlar-reinforced) |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Oxi7310 |
| Instrument Type | Benchtop (not portable — corrected per technical specification) |
| Measurement Principle | Electrochemical (Clark-type polarographic sensor) |
| Dissolved Oxygen Range | 0.00–19.99 mg/L |
| Accuracy | ±0.5% of reading |
| Data Storage | 5,000 automatic / 500 manual entries |
| Pressure Compensation | Automatic (integrated barometric sensor, 500–1100 mbar) |
| Salinity Compensation | Manual (0.0–70.0 g/kg) |
| Temperature Range | 0.0–50.0 °C |
| Temperature Accuracy | ±0.1 °C |
| Interface | Mini-USB |
| Display | Backlit LCD with graphical capability |
| Power | AC adapter, 4×AA alkaline batteries, or USB bus power |
| Battery Life | Up to 800 h (backlight off), 100 h (backlight on) |
| Compliance | GLP/AQA-compliant data logging with audit trail support |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Oxi 7310 |
| Instrument Type | Benchtop Laboratory DO Meter |
| Measurement Principle | Electrochemical (Clark-type Polarographic Sensor) |
| Range | 0.00–20.00 mg/L |
| Accuracy | ±0.5% of reading (0.00–20.00 mg/L) |
| Repeatability | ≤±0.5% |
| Detection Limit | 0.10 mg/L |
| Temperature Range | −5.0 to +105.0 °C (±0.1 °C) |
| Saturation Range | 0.0–200.0 % (±0.5%) and 0.0–600 % (±0.5%) |
| Partial Pressure Range | 0–200.0 hPa / 0–1250 hPa |
| Data Storage | 500 manual entries / 5000 auto-logged records |
| Interface | Micro-USB |
| GLP Compliance | Yes (time-stamped, user-ID, probe serial logging, audit-ready CSV export) |
| Power Supply | 4×AA alkaline or NiMH batteries or AC adapter |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | inoLab Oxi 7310 |
| Instrument Type | Portable |
| Measurement Principle | Electrochemical (Polarographic) |
| Dissolved Oxygen Range | 0.00–19.99 mg/L |
| Accuracy | ±0.5% of reading |
| Data Storage Capacity | 5,000 automatic / 500 manual entries |
| Pressure Compensation | Automatic (500–1100 mbar) |
| Salinity Compensation | Manual (0–70.0 g/kg) |
| Temperature Range | 0.0–50.0 °C |
| Temperature Accuracy | ±0.1 °C |
| Interface | Mini-USB |
| Display | Backlit LCD with graphical capability |
| Power Supply | 4 × 1.5 V alkaline batteries, USB bus power, or universal AC adapter |
| Battery Life | Up to 800 h (no backlight), 100 h (continuous backlight) |
| Compliance | GLP/AQA-compliant data logging |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Oxi 3205 |
| Measurement Principle | Electrochemical (Clark-type polarographic sensor) |
| DO Range | 0.00–19.99 mg/L (±0.5% of reading), up to 90 mg/L |
| Saturation Range | 0.0–199.9% (±0.5%), up to 600% |
| Partial Pressure Range | 0–199.9 hPa / 0–1250 hPa (±0.5%) |
| Temperature Range | −5.0 to +105.0 °C (±0.1 °C) |
| IP Rating | IP66/IP67 |
| Power | 4×AA alkaline batteries (2500 h continuous operation) |
| Dimensions | 180 × 80 × 55 mm (H×W×D) |
| Weight | ~400 g |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Oxi 3210 |
| Instrument Type | Portable |
| Measurement Principle | Electrochemical (Clark-type polarographic sensor) |
| DO Range | 0.00–19.99 mg/L |
| Accuracy | ±0.5% of reading |
| Saturation Range | 0.0–199.9% (±0.5% of reading) |
| Partial Pressure Range | 0–199.9 hPa / 0–1250 hPa (±0.5% of reading) |
| Temperature Range | −5.0–105.0 °C (±0.1 °C) |
| Resolution | 0.01 mg/L |
| Display | 7-segment LCD with backlight |
| IP Rating | IP66/IP67 |
| Battery Life | up to 2500 hours (4 × AA alkaline) |
| Data Storage | 200 manual entries |
| Auto-Read & Auto-Off (configurable | 10 min – 24 h) |
| Calibration | Wet-air saturation method with CellOx 325 or DurOx 325 sensors |
| ATC | Automatic temperature compensation |
| Pressure Compensation | Automatic (500–1100 mbar) |
| Brand | WTW |
|---|---|
| Model | Oxi 3310 |
| Type | Portable |
| Measurement Principle | Galvanic Cell Electrochemical Probe |
| Range | 0.00–19.99 mg/L (conc.), up to 90 mg/L (extended) |
| Accuracy | ±0.5% of reading |
| Repeatability | 0.05% |
| Detection Limit | 0.01 ppb |
| Temperature Range | –5.0 to 105.0 °C (±0.1 °C) |
| Auto-Temperature Compensation (ATC) | Yes |
| Calibration | 1–5-point, automatic recognition of 16 DIN/NIST buffers |
| Data Storage | 5000 automatic + 200 manual entries |
| IP Rating | IP66/IP67 |
| Battery Life | Up to 1000 h (display off), 150 h (backlight on) |
| Interface | Waterproof USB |
| Built-in Barometric Pressure Sensor | Yes |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Oxi 3310 |
| Instrument Type | Portable |
| Measurement Principle | Electrochemical Clark-type Polarographic Probe |
| DO Range | 0.00–19.99 mg/L (extended up to 90 mg/L) |
| Accuracy | ±0.5% of reading |
| Saturation Range | 0.0–199.9% (extended up to 600%) |
| Partial Pressure Range | 0–199.9 hPa / 0–1250 hPa |
| Temperature Range | −5.0 to +105.0 °C |
| Temp. Accuracy | ±0.1 °C |
| Data Storage | 200 manual + 5000 auto-log entries |
| Logging Interval | 1 s – 60 min |
| IP Rating | IP66/IP67 |
| Power Supply | 4 × 1.5 V alkaline or 4 × 1.2 V rechargeable batteries |
| Battery Life | up to 1000 h (150 h with backlight enabled) |
| Interface | Waterproof USB |
| Calibration | Automatic OxiCal protocol with electrode status feedback |
| ATC | Integrated automatic temperature compensation |
| CMC | Continuous Measurement Control with real-time validity indication |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | Oxi 3310 |
| Measurement Principle | Electrochemical Clark-type Polarographic Sensor |
| DO Range | 0.00–19.99 mg/L (±0.5% of reading), up to 90 mg/L |
| Saturation Range | 0.0–199.9% (±0.5%), up to 600% |
| Partial Pressure Range | 0–199.9 hPa / 0–1250 hPa (±0.5%) |
| Temperature Range | −5.0–105.0 °C (±0.1 °C) |
| Data Storage | 5000 automatic + 200 manual entries |
| IP Rating | IP66/IP67 |
| Battery Life | Up to 1000 h (150 h with backlight) |
| Interface | Waterproof USB |
| Calibration | Automatic OxiCal dry-air or saturated air method with electrode status feedback |
| Temperature Compensation | ATC (Automatic Temperature Compensation) |
| Compliance | Designed for GLP-compliant field and lab use |