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Kestrel 5400 热应力气象仪

SENSORS
SENSORSACCURACYRESOLUTIONSPECIFICATION RANGENOTES
Wind Speed |AirLarger 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* 
2-131.2*
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.
Globe Temperature2.5 °F
1.4 °C
0.1 °F 
0.1 °C
-20.0 to 140.0 °F 
-29.0 to 60.0 °C
Temperature inside 1in|25 mm black powder coated copper globe converted to Tg equivalent for standard 6 in|150 mm globe. Closest equivalence obtained with airflow greater than 2.2 mph|1 m/s.
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
25°C/77°F 
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.
Compass1° 
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.


CALCULATED MEASUREMENTS
MEASUREMENTACCURACY (+/-)RESOLUTIONSENSORS EMPLOYED
AHLUAHLU Accuracy derived from HLI accuracy accumulated over time.1.0Wind Speed, 
Temperature Globe Temperature,
Relative Humidity
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
Density Altitude226 ft 
69 m
1 ft 1 mTemperature, Relative Humidity Pressure
Dew Point3.4 °F 
1.9 °C 
15- 
95% RH. Refer to Range for Temperature Sensor
0.1 °F 
0.1 °C
Temperature, Relative Humidity
Heat Index7.1°F 
4.0°C
0.1 °F 
0.1 °C
Temperature, Relative Humidity
HLI2.71.0Wind Speed, Temperature Globe Temperature, Relative Humidity
Outdoor Wet Bulb Globe Temperature (WBGT)1.3 °F 
0.7 °C
0.1 °F 
0.1 °C
Wind Speed, Temperature Globe Temperature, Rative 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
Thermal Work Limit (TWL)10.9W/m20.1 °F
0.1 °C
TWind Speed, 
Temperature Globe 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
ADDITIONAL PRODUCT INFO
Display & BacklightMultifunction, multidigit monochrome dot-matrix display. Choice of white or red LED backlight.
Response Time & Display UpdateDisplay updates every 1 second. After exposure to large environmental changes, all sensors require an equilibration period to reach stated accuracy. Measurements employing RH may require longer periods particularly after prolonged exposure to very high or very low humidity. WBGT requires about 8 minutes to reach 95% accuracy and about 15 minutes to reach 99% accuracy after exposure to large environmental changes.
Data Storage & Graphical display Min/Max/Avg HistoryLogged history stored and displayed for every measured value. Manual and auto data storage. Min/Max/Avg history may be reset independently. Auto-store interval settable from 2 seconds to 12 hours*, overwrite on or off. Logs even when display off except for 2 and 5 second intervals. Kestrel 5 series units hold over 10,000 data points.
data Upload & Bluetooth Data Connect OptionWireless range up to 100ft. Connection requires optional USB data transfer cable or Kestrel Link Dongle or Kestrel LiNK app. Employs Kestrel Link protocol for data transmission with Link supported devices. (Kestrel LiNK for iOS/Android, Kestrel Link for PC/MAC).
Clock/CalendarReal-time hours:minutes:seconds clock, calendar, automatic leap-year adjustment.
Auto ShutdownUser-selectable – Off, 15-60 minutes with no key presses.
LanguagesEnglish, French, German, Spanish.
CertificationsCE certified, RoHS, FCC, IC tested and WEEE compliant. Individually tested to NIST-traceable standards.
OriginDesigned and manufactured in the USA from US and imported components. Complies with Regional Value Content and Tariff Code Transformation requirements for NAFTA Preference Criterion B.
Battery LifeAA Lithium included. Up to 400 hours of use, reduced by backlight, alert light and buzzer, or Bluetooth radio transmission use.
Shock ResistanceMIL-STD-810g, Transit Shock, Method 516.6 Procedure IV; unit only; impact may damage replaceable impeller.
SealingWaterproof (IP67 and NEMA-6)
Display & Battery Operational Temperature Limits14° F to 131° F | -10 °C to 55 °C Measurements may be taken beyond the limits of the operational temperature range of the display and batteries by maintaining the unit within the operational range and then exposing it to the more extreme environment for the minimum time necessary to take reading.
Storage Temperature-22.0 °F to 140.0 °F | -30.0 °C to 60.0 °C.
Size & Weight5.0 x 1.9 x 1.1 in | 12.7 x 4.5 x 2.8 cm, 4.3 oz | 121 g. (Lithium battery included)
Details

manual


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