Kestrel 3500 Delta T Manuals

INSTRUCTION MANUAL 1000, 2000, 2500 & 2500NV, 3000, 3500 & 3500NV, 3500DT NKhome.com 800.784.4221 Weather & Environmental Meters

USER GUIDE 1000, 2000, 2500 & 2500NV, 3000, 3500 & 3500NV, 3500DT Shop for Quality products online at: 1.800.561.8187 www.SCOUTBASECAMP.ca

USER GUIDE 1000, 2000, 2500 & 2500NV, 3000, 3500 & 3500NV, 3500DT kestrelinstruments.com

3500 Delta T Pocket Weather ® Meter with Backlight Plus additional features: • clock • 3-hour pressure trend • data hold function • backlight • automatic power-down function Revised 07/26/10 INSTRUCTION MANUAL Thank you for purchasing the Kestrel 3500 Pocket Weather Meter. This instrument will measure the following environmental conditions: • wind speed • heat stress index • maximum wind gust • dewpoint • average wind speed • wet bulb temperature • temperature (air, water snow) • barometric pressure • wind chill • altitude • relative humidity • delta T Shop for Kestrel products online at: 1.877.766.5412 www.WeatherMeters-Direct.com

3500 Pocket Weather ® Meter with Backlight Revised 07/28/10 INSTRUCTION MANUAL Plus additional features: • clock • 3-hour pressure trend • data hold function • backlight • automatic power-down function • waterproof and foats Thank you for purchasing the Kestrel 3500 Pocket Weather Meter. This instrument will measure the following environmental conditions: • wind speed • heat stress index • maximum wind gust • dewpoint • average wind speed • wet bulb temperature • temperature (air, water, snow) • barometric pressure • wind chill • altitude • relative humidity Shop for Kestrel products online at: 1.877.766.5412 www.WeatherMeters-Direct.ca

Thank you for purchasing the Kestrel 3500 Pocket Weather Meter. This instrument will measure the following environmental conditions: • wind speed • heat stress index • maximum wind gust • dewpoint • average wind speed • wet bulb temperature • temperature (air, water snow) • barometric pressure • wind chill • altitude • relative humidity Plus additional features: • clock • 3-hour pressure trend • data hold function • backlight • automatic power-down function OPERATION 1) Slide off cover. 2) Turn on. Press the center button ( ) to turn on the unit. 3) Select measurement. Press the right arrow ( ) to scroll through the measurements listed below. Press the left arrow ( ) to scroll through the measurements in reverse order. The instantaneous measurements will be displayed. Each measurement screen is preceded by a brief hint to clarify which measurement is being displayed. (See Understanding the Measurements section for more information.) 4) Select the unit of measure. While holding , press to scroll through the units of measure listed below. Mode Hint Icon Units of Measure Clock --- --- 12-hr, 24-hr Wind Speed SPd m/s, ft/min, km/h, mph, kt, B Max Gust SPd MAX m/s, ft/min, km/h, mph, kt, B Avg Speed SPd AVG m/s, ft/min, km/h, mph, kt, B Temperature dEG C, F Wind Chill chill C, F Humidity r.h. % Heat Stress Index H.I. C, F Dewpoint d.P. C, F Wet Bulb Temp bulb C, F Barometric Pressure* bAro hPa, inHg Altitude Alt m, ft * Only one of the pressure icons will be displayed, indicating the 3-hour pressure trend. pressure rising quickly (rise more than +0.18 inHg) pressure rising (rise within +0.06 inHg and +0.18 inHg) pressure stable (remain within -0.06 and +0.06 inHg) pressure falling (drop within -0.06 inHg and -0.18 inHg) pressure falling quickly (drop more than -0.18 inHg) 5) Hold mode. While holding , press to hold the time and all of the measured values. The word “HOLD” will blink to indicate the Hold Mode. Press or to view the other measurements in Hold Mode. While holding , press to exit the Hold Mode. This mode can be useful for taking measurements when unable to view the display. 6) Turn on the backlight. Press to activate the backlight for 10 seconds. If or are pressed while the backlight is illuminated, the backlight will remain illuminated for another 10 seconds. Press while the backlight is illuminated to manually turn off the backlight. 7) Adjust the clock. Simultaneously press and to adjust the clock. While the clock is blinking, press or to adjust the clock. Hold or to adjust the times quickly. Simultaneously press and to exit the clock adjustment. 8) Adjust the reference altitude. Obtain your altitude from a topographic map or landmark to use as your reference altitude. From the barometric pressure screen, simultaneously press and buttons to adjust the reference altitude. Press or to adjust the reference altitude, or hold or to adjust the value quickly. Simultaneously press and to exit the reference altitude adjustment. 9) Adjust the reference pressure. Obtain your barometric pressure reading from a local weather source to use as your reference pressure. From the altitude screen, simultaneously press and buttons to adjust the reference pressure. Press or to adjust the reference pressure, or hold or to adjust the value quickly. Simultaneously press and to exit the reference pressure adjustment. 10) Turn off. Hold for 2 seconds to manually turn off the unit. The unit will automatically turn off if no buttons have been pressed for 45 minutes. UNDERSTANDING THE MEASUREMENTS Wind Speed - average over the previous three seconds. The measurement will be accurate for air flow through the front or rear of the unit. Maximum Wind Gust - maximum 3 - second wind speed since the unit was turned on. Average Wind Speed - average wind speed since the unit was turned on. Temperature - instantaneous temperature of the thermistor, which is located at the end of the long coiled leads in the open cavity below the impeller. The exposed thermistor will respond quickly to changes in temperature when air flows past it. For fastest response, either hold the unit into the wind or wave the unit side to side for 15 seconds. Readings should be taken in the shade. Water and snow temperatures can be taken by hold the unit in the water or snow. Wind Chill - combination of wind speed and temperature, as defined by the US National Weather Service. Wind chill is the effective temperature on a human or animal at low temperatures due to wind speed. Wind chill readings will be the same as the temperature readings above 45ºF or below 3 mph. Relative Humidity - amount of moisture in the air compared to the amount of moisture the air can hold for the given temperature, represented as a percent. Because relative humidity is also a function of the temperature, the response time will be dependent on the temperature response time (see temperature section above). Readings should be taken in the shade. Heat Stress – combination of temperature and humidity, as defined by the US National Weather Service. Heat stress is the effective temperature on a human or animal at high temperatures due to humidity. Heat stress readings will be the same as the temperature readings below 70ºF. Dewpoint – calculated based on temperature and humidity measurements, as a measure of moisture content in the air. If the dewpoint is very close to the temperature, the air is humid. If the temperature and dewpoint are the same, dew will form. If this happens below freezing, frost will form. Wet Bulb Temperature - calculated based on temperature and humidity measurements, as a measure of evaporation rate. If the wet bulb temperature is very close to the air temperature, the air is humid. Wet bulb temperature is typically measured by swinging a mercury thermometer with a wet sock on its end for several minutes. Altitude and Barometric Pressure - the Kestrel 3500 will measure station pressure in order to calculate barometric pressure and altitude. Changes in either air pressure or altitude will affect these readings, so it’s important to make adjustments as necessary. First, you will need to obtain either (a) the current barometric pressure or (b) the altitude of your location. You can obtain your current barometric pressure by contacting a local airport or weather service. Set this value as your reference pressure on the ALTITUDE screen to determine your altitude. Otherwise, you can obtain your altitude from a topographic map or local landmark. Set this value as your reference altitude on the BAROMETRIC PRESSURE screen to determine your barometric pressure. There are two examples for when and how to use the BAROMETRIC PRESSURE and ALTITUDE screens. First, assume that you know the altitude from one of the sources above. Set the reference altitude on the BAROMETRIC PRESSURE screen to this elevation. As long as you remain at home, you can accurately track changes in the barometric pressure. However, the measurement on the ALTITUDE screen also changes. This value will fluctuate as pressure fronts pass through your location. Since you know your house in not changing elevation, you can ignore this screen. Now let’s assume that you are planning a day hike and you’d like to track your altitude. Before starting, you’ll need to adjust the reference pressure on the ALTITUDE screen. You can do this by simply adjusting the reference pressure until you reach the elevation of your house. The reference pressure will be the same as the pressure reading on the BAROMETRIC PRESSURE screen. You can now track the altitude as you hike. You can ignore the values on the BAROMETRIC PRESSURE screen, since the pressure changes are predominantly due to changes in elevation. As with all pressure altimeters, it must be assumed that any change in pressure due to weather is small over the course of one day. If you were to encounter an elevation landmark, you can adjust the reference pressure until the altitude matches the landmark elevation. This will correct the altitude for any pressure changes due to weather. MAINTENANCE Storing Your Kestrel Avoid storing your Kestrel where it will be exposed to temperatures above 80° C [176° F] or below -30°C [-22°F] for extended periods of time. Doing so may cause permanent damage. (Note that the inside of a car parked in the hot sun can reach very high temperatures.) Use of the Lanyard and Cover The cover can be captured on the lanyard to avoid loss. First, remove the cord poplock. Then feed the lanyard end through the large opening in the cover and out the slot. Replace the poplock on the lanyard. Replacing the Battery When your display flashes the low battery indicator ( ) , replace the battery. Use a large coin to open the battery compartment. Insert a new CR2032 coin cell (available where watch batteries are sold), positive (+) pole up. When replacing the battery door, be sure to keep the black rubber o-ring seated in the groove on the case back. + CR2032 3V ! CR2032 Battery A s s e m b l e d i n U S A Kestrel ® 3500 Pocket Weather ™ Meter with Backlight Thank you for purchasing a Kestrel Pocket Weather Meter! Please register your Kestrel within 10 days of receipt to activate your warranty coverage. (If product is not registered, two-year warranty coverage will start on date of manufacture.) This information will be kept confidential. Any information collected about our customers will not be sold or distributed, and will be used for the business of Nielsen-Kellerman only. We are conducting this survey in order to improve the quality of our product. Thank you for your cooperation and we appreciate your time. The team at Nielsen-Kellerman stands proudly behind our products. If you have any questions or comments please feel free to call us at 1.800.784.4221 or visit our website at www.nkhome.com. Sincerely, Nielsen-Kellerman Sales Department Kestrel Pocket Weather Meters

Thank you for purchasing the Kestrel 3500 Pocket Weather Meter. This instrument will measure the following environmental conditions: • wind speed • heat stress index • maximum wind gust • dewpoint • average wind speed • wet bulb temperature • temperature (air, water snow) • barometric pressure • wind chill • altitude • relative humidity Plus additional features: • clock • 3-hour pressure trend • data hold function • backlight • automatic power-down function OPERATION 1) Slide off cover. 2) Turn on. Press the center button ( ) to turn on the unit. 3) Select measurement. Press the right arrow ( ) to scroll through the measurements listed below. Press the left arrow ( ) to scroll through the measurements in reverse order. The instantaneous measurements will be displayed. Each measurement screen is preceded by a brief hint to clarify which measurement is being displayed. (See Understanding the Measurements section for more information.) 4) Select the unit of measure. While holding , press to scroll through the units of measure listed below. Mode Hint Icon Units of Measure Clock --- --- 12-hr, 24-hr Wind Speed SPd m/s, ft/min, km/h, mph, kt, B Max Gust SPd MAX m/s, ft/min, km/h, mph, kt, B Avg Speed SPd AVG m/s, ft/min, km/h, mph, kt, B Temperature dEG C, F Wind Chill chill C, F Humidity r.h. % Heat Stress Index H.I. C, F Dewpoint d.P. C, F Wet Bulb Temp bulb C, F Barometric Pressure* bAro hPa, inHg Altitude Alt m, ft * Only one of the pressure icons will be displayed, indicating the 3-hour pressure trend. pressure rising quickly (rise more than +0.18 inHg) pressure rising (rise within +0.06 inHg and +0.18 inHg) pressure stable (remain within -0.06 and +0.06 inHg) pressure falling (drop within -0.06 inHg and -0.18 inHg) pressure falling quickly (drop more than -0.18 inHg) 5) Hold mode. While holding , press to hold the time and all of the measured values. The word “HOLD” will blink to indicate the Hold Mode. Press or to view the other measurements in Hold Mode. While holding , press to exit the Hold Mode. This mode can be useful for taking measurements when unable to view the display. 6) Turn on the backlight. Press to activate the backlight for 10 seconds. If or are pressed while the backlight is illuminated, the backlight will remain illuminated for another 10 seconds. Press while the backlight is illuminated to manually turn off the backlight. 7) Adjust the clock. Simultaneously press and to adjust the clock. While the clock is blinking, press or to adjust the clock. Hold or to adjust the times quickly. Simultaneously press and to exit the clock adjustment. 8) Adjust the reference altitude. Obtain your altitude from a topographic map or landmark to use as your reference altitude. From the barometric pressure screen, simultaneously press and buttons to adjust the reference altitude. Press or to adjust the reference altitude, or hold or to adjust the value quickly. Simultaneously press and to exit the reference altitude adjustment. 9) Adjust the reference pressure. Obtain your barometric pressure reading from a local weather source to use as your reference pressure. From the altitude screen, simultaneously press and buttons to adjust the reference pressure. Press or to adjust the reference pressure, or hold or to adjust the value quickly. Simultaneously press and to exit the reference pressure adjustment. 10) Turn off. Hold for 2 seconds to manually turn off the unit. The unit will automatically turn off if no buttons have been pressed for 45 minutes. UNDERSTANDING THE MEASUREMENTS Wind Speed - average over the previous three seconds. The measurement will be accurate for air flow through the front or rear of the unit. Maximum Wind Gust - maximum 3 - second wind speed since the unit was turned on. Average Wind Speed - average wind speed since the unit was turned on. Temperature - instantaneous temperature of the thermistor, which is located at the end of the long coiled leads in the open cavity below the impeller. The exposed thermistor will respond quickly to changes in temperature when air flows past it. For fastest response, either hold the unit into the wind or wave the unit side to side for 15 seconds. Readings should be taken in the shade. Water and snow temperatures can be taken by hold the unit in the water or snow. Wind Chill - combination of wind speed and temperature, as defined by the US National Weather Service. Wind chill is the effective temperature on a human or animal at low temperatures due to wind speed. Wind chill readings will be the same as the temperature readings above 45ºF or below 3 mph. Relative Humidity - amount of moisture in the air compared to the amount of moisture the air can hold for the given temperature, represented as a percent. Because relative humidity is also a function of the temperature, the response time will be dependent on the temperature response time (see temperature section above). Readings should be taken in the shade. Heat Stress – combination of temperature and humidity, as defined by the US National Weather Service. Heat stress is the effective temperature on a human or animal at high temperatures due to humidity. Heat stress readings will be the same as the temperature readings below 70ºF. Dewpoint – calculated based on temperature and humidity measurements, as a measure of moisture content in the air. If the dewpoint is very close to the temperature, the air is humid. If the temperature and dewpoint are the same, dew will form. If this happens below freezing, frost will form. Wet Bulb Temperature - calculated based on temperature and humidity measurements, as a measure of evaporation rate. If the wet bulb temperature is very close to the air temperature, the air is humid. Wet bulb temperature is typically measured by swinging a mercury thermometer with a wet sock on its end for several minutes. Altitude and Barometric Pressure - the Kestrel 3500 will measure station pressure in order to calculate barometric pressure and altitude. Changes in either air pressure or altitude will affect these readings, so it’s important to make adjustments as necessary. First, you will need to obtain either (a) the current barometric pressure or (b) the altitude of your location. You can obtain your current barometric pressure by contacting a local airport or weather service. Set this value as your reference pressure on the ALTITUDE screen to determine your altitude. Otherwise, you can obtain your altitude from a topographic map or local landmark. Set this value as your reference altitude on the BAROMETRIC PRESSURE screen to determine your barometric pressure. There are two examples for when and how to use the BAROMETRIC PRESSURE and ALTITUDE screens. First, assume that you know the altitude from one of the sources above. Set the reference altitude on the BAROMETRIC PRESSURE screen to this elevation. As long as you remain at home, you can accurately track changes in the barometric pressure. However, the measurement on the ALTITUDE screen also changes. This value will fluctuate as pressure fronts pass through your location. Since you know your house in not changing elevation, you can ignore this screen. Now let’s assume that you are planning a day hike and you’d like to track your altitude. Before starting, you’ll need to adjust the reference pressure on the ALTITUDE screen. You can do this by simply adjusting the reference pressure until you reach the elevation of your house. The reference pressure will be the same as the pressure reading on the BAROMETRIC PRESSURE screen. You can now track the altitude as you hike. You can ignore the values on the BAROMETRIC PRESSURE screen, since the pressure changes are predominantly due to changes in elevation. As with all pressure altimeters, it must be assumed that any change in pressure due to weather is small over the course of one day. If you were to encounter an elevation landmark, you can adjust the reference pressure until the altitude matches the landmark elevation. This will correct the altitude for any pressure changes due to weather. MAINTENANCE Storing Your Kestrel Avoid storing your Kestrel where it will be exposed to temperatures above 80° C [176° F] or below -30°C [-22°F] for extended periods of time. Doing so may cause permanent damage. (Note that the inside of a car parked in the hot sun can reach very high temperatures.) Use of the Lanyard and Cover The cover can be captured on the lanyard to avoid loss. First, remove the cord poplock. Then feed the lanyard end through the large opening in the cover and out the slot. Replace the poplock on the lanyard. Replacing the Battery When your display flashes the low battery indicator ( ) , replace the battery. Use a large coin to open the battery compartment. Insert a new CR2032 coin cell (available where watch batteries are sold), positive (+) pole up. When replacing the battery door, be sure to keep the black rubber o-ring seated in the groove on the case back. Thank you for purchasing a Kestrel Pocket Weather Meter! This information will be kept confidential. Any information collected about our customers will not be sold or distributed, and will be used for the business of Nielsen-Kellerman only. We are conducting this survey in order to improve the quality of our product. Thank you for your cooperation and we appreciate your time. The team at Nielsen-Kellerman stands proudly behind our products. If you have any questions or comments please feel free to call us at 1.800.784.4221 or visit our website at www.nkhome.com. + CR2032 3V ! CR2032 Battery A s s e m b l e d i n U S A Kestrel ® 3500 Pocket Weather ™ Meter with Backlight ® Kestrel Pocket Weather Meters

Relative Humidity Calibration Kit For calibrating the following Kestrel Meters Kestrel 5 Series, 4 Series and Kestrel 3000-3500 Series (Kestrel DROPs currently cannot be recalibrated) Kestrelinstruments.com 800.784.4221