How to do a Clean Re-installation of the Sensor in EasyMatch QC


On rare occasions, the sensor information can become corrupted and the sensor is unable to communicate correctly with EasyMatch QC+ER software.

Each time a sensor is connected to EZMQC, the serial number and COM settings for that sensor are written to a file called “sensors.dat” found at C:\HunterLab\EasyMatchQC\Sensors.

When EasyMatch QC is opened, EZMQC reads this file in to correctly set the last used sensor settings so that the state of the sensor is configured to match last used in the software. This is where the misidentification may be originating.

Do the following to return EasyMatch QC to the current and correct sensor state.

  1. Close EasyMatch QC.
  2. Using File Explorer, navigate to C:\HunterLab\EasyMatchQC\Sensors and delete the “sensor.dat” file.
  3. When EZMQC is restarted, you will be prompted to install a new sensor.
  4. Go to Sensor/Install-Configure and install your current sensor. Select your sensor type from the drop list then make the correct COM port selection. If the communications cable from the sensor is a 9-to-9 pin serial cable, it should be COM 1. If a USB connector is used at the PC end, it is usually the highest COM port number available. Most HunterLab sensors beep when communications is achieved. If the highest COM port offered does not work, go to the second highest or check with your IT department for further information
  5. When the sensor is installed, you should be walked through standardization.

The correct sensor information will now display at the bottom of the main screen.

When you next close the EasyMatch QC, a new “sensor.dat” file will be created. 

FAQ: “If I re-install the sensor, does this affect my previous data?”

Not at all. You are just refreshing communication parameters with your HunterLab sensor.


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