AWS Convergence Technologies, INC

Do any sensors require calibration after installation?

With proper installation the only weather parameter that usually needs to be adjusted is barometric pressure. Since pressure changes with elevation, your pressure will need to be adjusted if there is a significant difference between your elevation and that of AWS Headquarters.

FOR SYSTEMS WITH SERIAL NUMBERS LOWER THAN 96999

You can adjust the pressure on your system with a small screwdriver through a hole in the side of the data logger chassis. You can obtain an accurate local pressure reading from the National Weather Service. Be sure to exercise care when making this adjustment. Only small turns are necessary to adjust your pressure. Be sure that you can see the digital display or computer screen to monitor the changes that you are making. The system has a one minute averaging time so turn the screw slowly and let the system settle in for one minute prior to continuing. The pressure can only be adjusted to + or - 0.5 in Hg from the actual reading.

FOR SYSTEMS WITH SERIAL NUMBERS HIGHER THAN 97000

These systems require a digital calibration. The "Setup Wizard" for the newest versions of Airwatch prompts you to enter the local pressure. You can get can accurate local readings from the National Weather Service. If you missed this step in the Setup Wizard, contact AWS to remotely calibrate your barometer. Barometers on these units can be calibrated to any value.