WQ-PH Smart USB Sensor Troubleshooting

    Problems may arise due to errors with: Electrode function Standards Samples Technique Follow the steps below to isolate the source of the problem. Electrode Function: For pH, there should be a difference of 150 to 210 mV between pH 4 and 7, as well as between pH 7 and 10. Observing the mV values provides […]

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    WQ-PH Smart USB Sensor Maintenance

    Maintenance As the WQ-pH sensor ages, it may exhibit sluggish or noisy readings. The following procedures may improve performance. Reference Electrode Problems: A blocked reference junction is the most common problem of pH measurements. Symptoms include a slow response, off-scale and noisy readings. Soak the WQ-pH sensor in a beaker of warm water (50°C) for […]

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    Calibrating WQ-PH Smart USB Sensor

    When calibrating the WQ-pH sensor, there are options to perform 1-point, 2-point, or 3-point calibrations. The pH values of the calibration buffers should bracket the pH of the sample.  For maximum accuracy, a 3-point calibration is recommended. WQSensors software will be used in the calibration process. 1-point calibration:  The 1-point calibration should be used only […]

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    WQ-PH Smart USB Sensor Measurement Techniques

    Refer to WQSensors Measurement Techniques for additional WQSensor guidelines that will help lead to best results. For the WQ-PH Smart USB Sensor, see Figure 1 for further depiction of proper techniques. WQ-PH Smart USB Sensor Getting Started contains more information on steps that should be taken prior to measuring.     REV: 13H31

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    WQ-PH 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 download and install the software. Note that the WQSensors software is compatible with Windows XP 32-bit, Windows Vista 32-bit and Windows 7 32-bit. Preparing for Measurements […]

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    WQ-PH Sensor Specifications

    pH Range 0-14 pH Temperature Measurement 0 to 50°C Temperature Accuracy ± 0.2°C Junction Type Double Junction Size: Electrode length 155 mm Body Diameter 12 mm Cap Diameter 16 mm Cable Length 6 ft.   REV: 13H31  

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    WQ-PH What’s Included & Common Accessories

    What’s Included The WQ-PH Smart USB Sensor includes the following accessories and spares to get started and keep the unit operational: (1) pH & temperature sensor with 6 feet of cable and integral USB connector (1) WQSensor storage bottle WQSensor Software & Knowledge Library CD WQSensor Quick Start Guide Common Accessories Part Number Description Details […]

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    WQ-PH Smart USB Sensor Overview

    Constructed with impact resistant polycarbonate, gel electrolyte, double junction, and full pH range glass, this WQSensor is ready for thousands of measurements. An integral temperature sensor automatically compensates pH readings for sample temperature. An internally stored unique ID and GLP file ensures quality data and tracks calibration status.     REV: 13H31

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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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