Troubleshooting WQ-DO Dissolved Oxygen Smart USB Sensor

    Problems may arise due to errors with: Electrode function Technique Follow the steps below to isolate the source of the problem. Electrode Function Electrode function can be verified by testing the probe in an oxygen-free environment and a 100% air-saturated environment. The two methods described below may be used to prepare an oxygen-free solution. Method […]

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    WQ-DO Dissolved Oxygen Smart USB Sensor Maintenance

    Maintenance If the response time and/or quality of data collected by a WQSensor decrease, try cleaning and reconditioning the probe. If these steps do not resolve the problem, consider replacing the sensing module to boost performance. Cleaning The sensor can be cleaned using distilled or deionized water. Rinse thoroughly as necessary but avoid using any […]

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    Calibrating WQ-DO Dissolved Oxygen Smart USB Sensor

    The WQ-DO sensor requires only a 1-point calibration. Calibration is performed in a 100% saturated dissolved oxygen environment (Air Calibration) or in a known dissolved oxygen concentration solution (In-Situ Calibration). In order to ensure proper polarization of the electrodes, the probe must warm up for 15-30 minutes before calibrating. 30 minutes is recommended. The dissolved […]

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    WQ-DO Dissolved Oxygen Smart USB Sensor Measurement Techniques

    Refer to WQSensors Measurement Techniques for additional WQSensor guidelines that will help lead to best results. For the WQ-DO Dissolved Oxygen Smart USB Sensor, see Figure 1 for further depiction of proper techniques. Making Dissolved Oxygen Measurements After plugging the sensor in, allow the probe at least 15 to 30 minutes before calibrating or measuring. […]

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    WQ-DO Dissolved Oxygen Smart USB Sensor Getting Started

    Each WQSensor ships assembled, tested, and calibrated to factory specifications. To get started, insert the WQSensors software CD included with the sensor into a computer and follow the wizard to install the software. Note that the WQSensors software is compatible with Windows XP 32-bit, Windows Vista32-bit and Windows 7 32-bit. Preparing for Measurements Note: When preparing […]

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    WQ-DO Dissolved Oxygen Smart USB Sensor Specifications

    Concentration Range 0% to 200% (0-20mg/L) O2 Temperature Range 0 to 50°C Temperature Accuracy ± 0.2°C DO Response Time 98% of full response in 60 seconds at 25°C DO Reproducibility ±2% Size: Electrode length 150 mm Body Diameter 12 mm Cap Membrane 16 mm OD x 30 mm L Cable Length 6 ft.   REV: […]

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    WQ-DO Dissolved Oxygen Smart USB Sensor What’s Included & Common Accessories

    What’s Included WQ-DO: Dissolved oxygen & temperature sensor with 6 feet of cable and integral USB connector Dissolved Oxygen storage bottle Electrolyte Filling Solution Polishing Strips Membrane Cap WQSensor Software & Knowledge Library CD WQSensor Quick Start Guide Common Accessories Part Number Description Details 1006 WQSensors software Sensor interface and data collection program included with […]

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    WQ-DO Dissolved Oxygen Smart USB Sensor Overview

    Based on the US EPA approved method 360.1, this polarographic WQSensor is designed for laboratory accuracy. Probe maintenance is minimal and simple with a screw-on cap membrane. An integral temperature sensor automatically compensates dissolved oxygen readings for sample temperature. An internally stored unique ID and GLP file ensures quality data and tracks calibration and sensor […]

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    WQSensors Troubleshooting Tips

    Follow procedures below to isolate and resolve sensor problems. Symptom Possible Cause Corrective Action Out of range calibration Considerable temperature gradient between standard solutions and reference fill solutions Soak the electrode in the low range calibration standard for two hours and recalibrate Contamination of calibration standards, poor dilution accuracy or distilled water quality, mathematical error […]

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