Kestrel 5000AG 家畜环境监测仪(0850AGHVG)

Wind Speed | Air SpeedLarger of 3% of reading, least significant digit or 20 ft/min Speed0.1 m/s 
1 ft/min 
0.1 km/h 
0.1 mph 
0.1 knots 
1 B* 
0.1 F/S*
0.6 to 40.0 m/s 
118 to 7,874 ft/min 
2.2 to 144.0 km/h 
1.3 to 89.5 mph 
1.2 to 77.8 knots 
0 to 12 B* 
1 inch|25 mm diameter impeller with precision axle and low-friction Zytel® bearings. Startup speed stated as lower limit, readings may be taken down to 0.4 m/s |79 ft min|1.5 km/h |.9 mph |.8 kt after impeller startup. Off-axis accuracy -1% @ 5º off axis; -2% @ 10º; -3% @ 15º. Calibration drift < 1% after 100 hours use at 16 MPH|7 m/s. Replacement impeller (NK PN-0801) field installs without tools (US Patent 5,783,753). Wind speed calibration and testing should be done with triangle on impeller located at the top front face of the Kestrel. Measuring wind speeds above 60 m/s / 134.2 mph can damage the impeller
Ambient Temperature0.9 °F 
0.5 °C
0.1 °F 
0.1 °C
-20.0 to 158.0 °F 
-29.0 to 70.0 °C
Airflow of 2.2 mph|1 m/s or greater provides fastest response and reduction of insolation effect. For greatest accuracy, avoid direct sunlight on the temperature sensor and prolonged sunlight exposure to the unit in low airflow conditions. Calibration drift is negligible for the life of the product. For further details, see Display & Battery Operational Temperature Limits.
Relative Humidity2%RH0.1 %RH10 to 90% 25°C noncondensingTo achieve stated accuracy, unit must be permitted to equilibrate to external temperature when exposed to large, rapid temperature changes and be kept out of direct sunlight. Calibration drift is typically less than ±0.25% per year.
Pressure1.5 hPa|mbar 
0.044 inHg 
0.022 PSI
0.1 hPa|mbar 
0.01 inHg 
0.01 PSI
700-1100 hPa|mbar 
20.67-32.48 inHg 
10.15-15.95 PSI
Monolithic silicon piezo-resistive pressure sensor with second-order temperature correction. Between 1100–1600 mbar, unit will operate with reduced accuracy. Sensor may not operate above 1600 mbar and can be damaged above 6,000 mbar or below 10 mbar. Calibration drift is negligible for the life of the product.
1/16th Cardinal Scale
0 to 360°2-axis solid-state magneto-resistive sensor mounted perpendicular to unit plane. Accuracy of sensor dependent upon unit’s vertical position. Self-calibration routine eliminates magnetic error from batteries or unit and must be run after every full power- down (battery removal or change). Readout indicates direction to which the back of the unit is pointed when held in a vertical orientation. Declination/variation adjustable for True North readout.

Air Density0.0002 lb/ft3 
0.0033 kg/m
0.001 lbs/ft3 
0.001 kg/m3
Temperature, Relative Humidity Pressure
Air Flow6.71%1 cfm 
1 m3/hr 
1 m3/m 
1 L/s
Air Speed, User Input (Duct Shape & Size)
Altitudetypical: 23.6 ft/7.2 m 
from 750 to 1100 mBar 
max: 48.2 ft/14.7 m 
from 300 to 750 mBar
1 ft 1 mPressure, User Input (Reference Pressure)
Barometric Pressure0.07 inHg 
2.4 hPa|mbar 
0.03 PSI
0.01 inHg 
0.1 hPa|mbar 
0.01 PSI 
Pressure, User Input (Reference Altitude)
Crosswind & Headwind/Tailwind7.1%1 mph 
1 ft/min 
0.1 km/h 
0.1 m/s 
0.1 knots
Wind Speed, Compass
Delta T3.2 °F 
1.8 °C
0.1 °F 0.1 °CTemperature, Relative Humidity Pressure
Density Altitude226 ft 
69 m
1 ft 1 mTemperature, Relative Humidity Pressure
Dew Point3.4 °F 
1.9 °C 
95% RH. Refer to Range for Temperature Sensor
0.1 °F 
0.1 °C
Temperature, Relative Humidity
Evaporation Rate0.01 lb/ft2/hr 
0.06 kg/m2/hr
0.01 b/ft2/hr 
0.01 kg/m2/hr
Wind Speed, Temperature Relative Humidity Pressure, User Input (Concrete Temperature)
Heat Index7.1°F 
0.1 °F 
0.1 °C
Temperature, Relative Humidity
Moisture Content | Humidity Ratio (“Grains”)4.9gpp 
0.1 gpp 
0.01 g/kg
Temperature, Relative Humidity Pressure
Probability of Ignition (PIG)PIG Accuracy dependent on proximity of inputs to reference table steps.10%Temperature, Relative Humidity
THI (NRC)1.5 °F 
0.8 °C
0.1 °F 
0.1 °C
Temperature, Relative Humidity
THI (Yousef)2.3 °F 
1.3 °C
0.1 °F 
0.1 °C
Temperature, Relative Humidity
Relative Air Density.0.3%0.1%Temperature, Relative Humidity Pressure
Wet Bulb Temperature - Psychrometric3.2 °F 
1.8 °C
0.1 °F 
0.1 °C
Temperature, Relative Humidity Pressure
Wet Bulb Temperature - Naturally Aspirated (NWB TEMP)1.4 °F 
0.8 °C
0.1 °F 
0.1 °C
Wind Speed, Temperature Globe Temperature, Relative Humidity, Pressure
Wind Chill1.6 °F 
0.9 °C
0.1 °F 
0.1 °C
Wind Speed, Temperature


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