Online Dissolved Oxygen Analyzer
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| Brand | Anton Paar |
|---|---|
| Origin | Austria |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Origin Category | Imported |
| Model | Oxy 5100 |
| Price | Upon Request |
| Resolution | 0.4 ppb |
| Measurement Range | 0–2000 ppb or 0–24 ppm |
| Repeatability | ≤0.5 ppb or ≤1 % of reading |
| Long-term Stability | ≤0.8 ppb per 24 h |
| Temperature Compensation Range | –5 °C to +40 °C |
| Communication Interfaces | Analog Output (AO), Analog Input (AI), Digital Input (DI), Digital Output (DO), CAN bus |
| Dimensions (H × W × D) | 174 mm × 174 mm × 230 mm |
| Operating Ambient Temperature | –5 °C to +50 °C |
| Brand | Apure |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | OEM Manufacturer |
| Regional Classification | Domestic (China) |
| Model | A10DO-AA1 |
| Price | USD 105 (FOB Shanghai) |
| Measurement Range | 0.00–20.00 ppm |
| Resolution | 0.01 ppm |
| Stability | ≤ 0.02 ppm/24 h |
| Temperature Compensation | 0–100 °C (manual or automatic via PT1000/NTC10K sensor) |
| Output Interfaces | Dual isolated 4–20 mA outputs (configurable for DO and temperature), RS485 optional |
| Relay Outputs | 2 programmable SPDT relays (3 A / 250 V AC, NO contact), adjustable hysteresis |
| Power Supply | AC 220 V ±10% / DC 24 V ±10%, ≤ 5 W |
| Enclosure Dimensions | 96 × 96 × 132 mm (H × W × D) |
| Panel Cutout | 92.5 × 92.5 mm |
| Operating Environment | 0–60 °C, ≤ 85 % RH (non-condensing) |
| Brand | Global Water |
|---|---|
| Origin | Germany |
| Manufacturer Status | Authorized Distributor |
| Origin Category | Imported |
| Model | WQ401 |
| Output | 4–20 mA |
| Measurement Range | 0–100% saturation / 0–8 ppm |
| Temperature Compensation Accuracy | ±0.5% |
| Max Pressure Rating | 40 psi |
| Operating Voltage | 10–36 VDC |
| Load Current | 15.5 mA + sensor output |
| Warm-up Time | 10 s |
| Operating Temperature | −40 to +55 °C |
| Membrane Material | 0.001″ FEP Teflon (standard probe) |
| Combined Measurement Error | ±2% FS |
| Probe Dimensions (Standard) | Ø32 mm × 279 mm |
| Probe Dimensions (Inline) | Ø50 mm × 305 mm |
| Weight | 454 g |
| Standard Kit | DD0000WQ401 electrode, 7.5 m cable, manual |
| Optional Accessories | WQEXC extension cable (up to 150 m), 00-740 replaceable DO membrane electrode |
| Brand | GreenPrima |
|---|---|
| Origin | United Kingdom |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Imported Instrument |
| Model | PM8202D |
| Measurement Range | 0.00–20.00 ppm / 0.00–200.00 ppb |
| Resolution | 0.001 ppm / 0.01 ppb |
| Temperature Compensation | −10 to +130 °C (manual or automatic, NTC10K/PT1000 sensor support) |
| Communication Interface | RS485 Modbus RTU |
| Dimensions | 144 × 144 × 108 mm (H × W × D) |
| Brand | Hach |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Imported |
| Model | LDO |
| Price | Upon Request |
| Measurement Range | 0.01–20 mg/L (ppm) and 0–200% saturation |
| Resolution | 0.01 mg/L |
| Repeatability | ±0.1 mg/L (0–8 mg/L) |
| Temperature Compensation | Automatic |
| Dimensions | 20 × 10 × 5 cm |
| Brand | Knick |
|---|---|
| Origin | Germany |
| Manufacturer Type | Manufacturer |
| Origin Category | Imported |
| Model | SE 706X/1-NMSN |
| Price | Upon Request |
| Resolution | 1% + 4 ppb |
| Measurement Range | 0.00–20.00 mg/L |
| Repeatability | 1% + 4 ppb |
| Stability | ±1% of reading per month |
| Temperature Compensation Range | –5 to +135 °C |
| Communication Interface | Memosens digital interface |
| Dimensions | Ø12 × 120 mm |
| Ambient Operating Temperature | 0–80 °C |
| Brand | Knick |
|---|---|
| Origin | Germany |
| Manufacturer | Knick Elektronik GmbH & Co. KG |
| Type | SE707 |
| Resolution | 1 ppb |
| Measurement Range | 0.00–50.00 mg/L |
| Repeatability | ±1% of reading + 1 ppb |
| Long-term Stability | ±1% of reading/year |
| Temperature Compensation Range | –5 to +121 °C |
| Output Signal | 4–20 mA (2-wire, HART-compatible) |
| Probe Length | 120 mm / 220 mm (standard variants) |
| Ambient Operating Temperature | 0–80 °C |
| Pressure Rating | 0.2–6 bar |
| Membrane Material | Fluoropolymer-based gas-permeable film |
| Sterilization Compatibility | Steam-in-place (SIP) up to 135 °C, compliant with EHEDG Guideline Doc. 8 (2022) |
| Hygienic Design | Fully drainable, crevice-free, Ra ≤ 0.8 µm polished stainless steel (1.4435 / SS316L) |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | SJG-208 |
| Price Range | USD 700 – 1,400 (FOB Shanghai) |
| Resolution | 0.01 mg/L, 0.1 % saturation, 0.1 °C |
| Measurement Range | (0.0–20.0) mg/L DO, (0.0–200.0) % saturation, (−10.0–120.0) °C |
| Repeatability | ≤ 0.20 mg/L |
| Stability | ±0.20 mg/L / 24 h |
| Temperature Compensation Range | (−10.0–120.0) °C |
| Communication Interface | RS-232 or RS-485 (user-selectable) |
| Dimensions | 144 × 144 × 160 mm |
| Weight | 2.5 kg |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | SJG-9435B |
| Price Range | USD 1,400–4,200 (FOB Shanghai) |
| Resolution | 0.1 µg/L |
| Measurement Ranges | (0–19.9) µg/L, (20–199) µg/L, (0.20–20.00) mg/L |
| Repeatability | ±3% FS |
| Stability | ±2% FS / 24 h |
| Temperature Compensation Range | (−10.0 to 120.0) °C |
| Communication Interface | RS-232 |
| Dimensions | 160 × 160 × 110 mm |
| Weight | 2 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | SJG-203A |
| Price Range | USD 1–4,999 |
| Resolution | 0.01 mg/L, 0.1%, 0.1°C |
| Measurement Range | (0.0–20.00) mg/L DO, (0.0–200.0)% saturation |
| Repeatability | ≤0.20 mg/L |
| Stability | ±0.20 mg/L / 24 h |
| Temperature Compensation Range | (−10.0–120.0)°C |
| Communication Interface | RS-232 |
| Dimensions & Weight | 160 × 160 × 110 mm, 1 kg |
| Basic Accuracy | ±0.5 mg/L (DO), ±10.0% (saturation), ±1.0°C (temperature) |
| Electronic Unit Accuracy | ±0.20 mg/L (DO), ±5.0% (saturation), ±0.3°C (temperature) |
| Salt Compensation Range | (0.0–50.0) g/L |
| Salt Compensation Error | ≤±3% |
| 90% Response Time | ≤45 s (at 20°C) |
| Enclosure Rating | IP65 |
| Power Supply | AC (220 ± 22) V, (50 ± 1) Hz |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Manufacturer |
| Product Origin | Domestic (China) |
| Model | SJG-209 |
| Price | USD 1,380 (FOB Shanghai) |
| Resolution | 0.01 mg/L |
| Measurement Range | (0.0–20.0) mg/L |
| Repeatability | ≤ 0.20 mg/L |
| Stability | ±0.20 mg/L / 24 h |
| Temperature Compensation Range | (0.0–50.0) °C |
| Communication Interface | RS-485 |
| Dimensions | 166 × 166 × 110 mm |
| Weight | 2.5 kg |
| DO Saturation Range | (0.0–200.0) % |
| Temperature Range | (0.0–50.0) °C |
| DO Accuracy | ±0.30 mg/L |
| Saturation Accuracy | ±10.0 % |
| Temperature Accuracy | ±0.2 °C |
| Output Signal | Isolated 4–20 mA DC, max load 600 Ω |
| Alarm Outputs | 2 relay outputs (220 V AC, 2.5 A resistive) |
| Cleaning Control Output | 1 programmable relay output (220 V AC, 2.5 A) |
| Data Storage | 2000 records with timestamp |
| Enclosure Rating | IP65 |
| Power Consumption | 10 W |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | MPA48 |
| Price Range | USD 4,200 – 7,000 |
| Resolution | 0.01 ppm (DO) |
| Measurement Range | DO: 0–25 ppm |
| SS | 0–30,000 mg/L |
| pH | 2–12 |
| ORP | ±2000 mV |
| Repeatability | ±1% (SS), 0.01 ppm (DO) |
| Stability | <1% per year (DO & SS) |
| Temperature Compensation | 0–60 °C (DO/SS), 10–100 °C (pH/ORP) |
| Communication Interfaces | 4–20 mA (up to 8 channels), RS232/RS485, relay outputs (8 dry-contact, 1 alarm, 1 clean signal) |
| Dimensions | 30 cm × 20 cm × 10 cm |
| Operating Ambient Temperature | −20 to +70 °C |
| Enclosure Rating | NEMA 4X |
| Max Pressure Rating | 100 psi |
| Sensor Cable Standard Length | 10 m (optional up to 610 m) |
| Brand | TimePower |
|---|---|
| Model | TP150 |
| Origin | Beijing, China |
| Manufacturer | TimePower Co., Ltd. |
| Measurement Range | 0.00–20.00 mg/L |
| Resolution | 0.01 mg/L (in mg/L range) / 0.1 µg/L (in µg/L range) |
| Repeatability | ≤1% FS |
| Stability | ±1.5% FS |
| Temperature Compensation Range | 0.1–80.0 °C |
| Water Sample Temperature Range | 5–80 °C |
| Ambient Temperature Range | 5–45 °C |
| Humidity Limit | ≤90% RH (non-condensing) |
| Output Signals | 0–10 mA / 0–20 mA / 4–20 mA (selectable) |
| Relay Outputs | 2 SPST, AC220V/3A or DC30V/3A |
| Communication Interface | RS485 |
| Display | 128×64 dot-matrix LCD with Chinese interface |
| Power Supply | AC 220 V ±10%, 50 Hz ±1 Hz |
| Power Consumption | <5 W |
| Enclosure Rating | IP65 |
| Dimensions | 142 × 125 × 155 mm (H×W×D) |
| Panel Cutout | 138 × 138 mm |
| Weight | 1.6 kg |
| Data Retention | >10 years after power loss |
| Response Time (T90) | <5 min at 25 °C |
| Sensor Type | Polarographic (Clark-type) with BJC membrane cap rated to 130 °C |
| Temperature Sensor | Pt1000 |
| Brand | TUNE VOLT |
|---|---|
| Origin | Beijing, China |
| Model | TW-6536(W) |
| Measurement Range | 0–20 mg/L |
| Resolution | 0.01 mg/L |
| Repeatability | ±1% FS |
| Stability | ±1% FS |
| Temperature Compensation Range | 5–50 °C |
| Communication Interface | RS485 (optional) |
| Dimensions | 155 mm × 155 mm × 140 mm (W × H × D) |
| Operating Ambient Temperature | 0–60 °C |
| IP Rating | IP65 |
| Output | Dual isolated 4–20 mA |
| Display | 192 × 64 dot-matrix LCD (bilingual Chinese/English) |
| Data Storage | 100,000 historical data points, 1,000 operation logs, 100 calibration records |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | WQ-FDO |
| Pricing | Available Upon Request |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | WQ401 |
| Pricing | Upon Request |
| Brand | YSI |
|---|---|
| Origin | USA |
| Model | ProSolo |
| Measurement Range | DO (0–500% air saturation, 0–50 mg/L) |
| Resolution | DO (0.1% saturation / 0.01 mg/L) |
| Repeatability | DO ≤ ±1% of reading |
| Drift | ≤ ±0.2 mg/L over 24 h (DO) |
| Temperature Compensation | Automatic (−5 to 50 °C) |
| Interface | USB 2.0 |
| Dimensions | 8.3 × 21.6 × 5.6 cm |
| Operating Ambient Temperature | 0–50 °C |
| IP Rating | IP67 |
| Certifications | RoHS, CE, WEEE, C-Tick, VCCI, 1 m drop-tested |