– Primary Test: Connect the sensor and run the data-collection program. Hold the tip of the sensor in your hand and check for the temperature readings to change.
– Secondary Test: Connect the sensor and run the data-collection program. Place the probe into an ice-water bath and/or place it into a boiling-water (or hot-water) bath.
– Calibrate? Never. Each unit is individually calibrated, and the calibration is stored on a smart chip in the sensor.
If the sensor can be turned on when connected by USB but not when disconnected from USB, the battery either needs charging or has reached its end of life and can no longer hold a charge. First, try charging the sensor for several hours. If the sensor still won’t turn on when disconnected from USB, the battery has likely reached its end of life. If you intend to use this sensor wirelessly, the battery will need to be replaced. The rechargeable battery in this sensor is covered by a one year warranty but should last two to five years in typical use.
How do I replace the battery in a Go Direct Wand-Type Sensor?
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Go Direct® Temperature Probe (GDX-TMP)