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or newspapers. They are in a different location and typically update once per hour.

The purpose of your weather station is to measure conditions of your surroundings, which vary significantly

from location to location.

Humidity Calibration

To enter the humidity calibration mode, press and hold the SET and MIN/MAX buttons at the same time for

3 seconds, and the humidity value will begin flashing. Press the CH/+ button to increase the humidity and the

MIN/MAX/- button to decrease the humidity reading in 1% increments. To rapidly increase (or decrease) the

humidity reading, press and hold the CH/+ or MIN/MAX/- button.

To return the humidity to the actual or uncalibrated measurement, press the SET button.

will be displayed when the humidity calibrated measurement.

Once the displayed humidity equals the calibrated source, press, and hold the SET button for three seconds, or

wait 15 seconds for timeout, and the humidity value will stop flashing.

Discussion: Due to manufacturing tolerances, the humidity is accurate to ± 5%. In addition, capacitive

hygrometers are susceptible to drift due to contamination. To improve this accuracy, the indoor and

outdoor humidity can be calibrated using an accurate source, such as a sling psychrometer or one step

humidpak calibration kits available at AmbientWeather.com.

Temperature Calibration

To enter the temperature calibration mode, press and hold the SET and CH/+ buttons for 3 seconds and the

temperature value will begin flashing. Press the CH/+ button to increase the temperature and the MIN/MAX/-

button to decrease the temperature reading in 0.1° increments. To rapidly increase (or decrease) the

temperature reading, press and hold the CH/+ or MIN/MAX/- button.

To return the temperature to the actual or uncalibrated measurement, press the SET button.

will be displayed when the temperature calibrated measurement.

Once the displayed temperature equals the calibrated source, press, and hold the SET button for three seconds,

or wait 15 seconds for timeout, and the temperature value will stop flashing.

Discussion: Temperature errors can occur when a sensor is placed too close to a heat source (such as a

building structure, the ground or trees).

To calibrate temperature, we recommend a mercury or red spirit (fluid) thermometer. Bi-metal (dial) and other

Ambient Weather WS-50-C User Manual

Questions and Answers: