Anemometer Thermometer Hygrometer Owner’s Instructions JDC ELECTRONIC USA PO Box 284 Holmen, WI 54636 USA 608.498.4021 (phone) ~ 608.531.2608 (fax) warranty@jdcusa.com ~ www.jdcusa.com NTech USA PO Box 284 Holmen, WI 54636 ph: 608.498.4021 fax: 608.531.2608 info@ntechusa.com www.ntechusa.
SKYWATCH® atmos You have just acquired a high precision instrument, realized with the most up-to-date technology. It was conceived to resist to an intensive use. However we recommend that you to treat it carefully and carefully read this owner’s manual. The LCD panel is split into three areas: Top: display of wind speed Centre: display of humidity gradient Bottom: display of temperature modes 1 2 3 5 4 Liquid crystal display with all segments 1. Omnidirectional cups 2.
Measuring Humidity Ambient humidity: Measurement unit: % rH (percentage of relative humidity) Display: resolution to 0.5% rH Measuring range: from 2% rH to 100% rH Measuring cycle: one measurement carried out every second Precision: +/- 3.5% Response time: In the event of a sudden change in the humidity or temperature, one should give the sensor enough time to allow it to adapt to the ambient air. Please refer also to: Response time in the section "Measuring temperature".
Precision: +/- 0.5°C at 25°C and +/- 1.5°C in the measuring range between -20 and 80°C Response time: The temperature sensor is located on the left, above the display. In the event of a sudden change in the temperature, it is necessary to allow the sensor enough time to reach the ambient temperature. This duration will depend on the temperature difference and wind force.
To change the battery: 1. Open the drawer on the bottom of the instrument by gripping the ends between the thumb and the index finger. 2. Replace the run-down battery with a new one 3. Insert the drawer back into the instrument, being mindful of the polarity (see Fig. 5). Please note that wrong positioning of the battery drawer (inverted polarity) inside the instrument may cause irreversible damages! Fig.
