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LDO Luminescent Dissolved Oxygen Analyzer
The LDO Luminescent Dissolved Oxygen Analyzer operates based on the principle of fluorescence quenching. As shown in the figure: blue light excites a fluorescent substance to emit red light. Oxygen molecules absorb energy from this process (quenching), causing the intensity and duration of red light emission to inversely correlate with the oxygen concentration. By measuring the phase difference between the emitted fluorescence and the reference light, and comparing it with internal calibration data, the dissolved oxygen concentration can be accurately calculated.
Product Application
● Dissolved oxygen monitoring in biological tanks of wastewater treatment plants
● Dissolved oxygen monitoring in rivers, lakes, seawater, and aquaculture environments
Key words:
Classification:
- 产品描述
- Product Features
- Performance Index
- Field Application
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荧光法溶解氧仪采用创新的荧光法替代传统的膜式电极，不用更换膜片和电解液，从而减少了维护工作量，提高了工作可靠性，特别适用于污水处理领域恶劣的工况。此外，荧光法传感器不消耗氧气，所以没有流速和搅动的要求，也不受硫化物等物质的干扰。主要应用于用于污水处理厂生化池溶解氧的监测、地表水溶解氧监测。
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- Innovative luminescent principle; no need to replace membranes or electrolyte solution, virtually maintenance-free
- Does not consume oxygen; no requirements for flow rate or agitation; immune to interference from: H₂S, pH, Co²⁺, NH₄⁺, SO₄²⁻, Cl⁻, Cl₂, etc.
- Digital sensor with strong anti-interference capability; sensor cable length can extend up to several hundred meters
- Compatible with brush-type self-cleaning system, enabling maintenance-free operation and reducing O&M costs
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Parameters
Details
Measuring Range
0.00–20.00 mg/L or 0.00–20.00 ppm, air saturation 0–200%
Resolution
0.01 mg/L, 0.01 ppm
Accuracy
< 5 mg/L: ±0.1 mg/L
> 5 mg/L: ±2% or ±0.2 mg/LRepeatability
≤ 0.1 mg/L
Sensitivity
±0.05 mg/L
Response Time
90% in < 60 seconds
95% in < 90 seconds (at 20 °C)Digital Interface
RS485 interface (Modbus RTU protocol)
Dimensions
Φ40.5 × 240 mm
Material
316L stainless steel
Cable Length
Standard 10 m, extendable up to 200 m
Connection Type
1" conical external thread
Protection Rating
IP68
Operating Temperature
0–60 ℃
Relative Humidity
0–95% RH, non-condensing
Operating Pressure
Max. 4 bar
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Related Information
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Tengine Innovation (Beijing) Instruments Inc.
Email: contact@tengine.com.cn
WhatsApp: +86 133 3109 8301
Address: Floor 6, Building 8, Yard 1,
Nongda South Road, Haidian District, Beijing
Copyright©2022 Tengine Innovation (Beijing) Instruments Inc.
Copyright©2022 Tengine Innovation
(Beijing) Instruments Inc.