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Authorised
Distributor - 2 Year Warranty* (Prompt Delivery)
Kestrel 4100 . . . . . . .
Finally, a hand held unit that measures everything you need to know
on a job site. The Kestrel 4100 is the new revolution in HVAC monitoring.
Features
Air flow in cfm, L/s, m³/s, m³/m, m³/h
Air Velocity in ft/m, mph, m/s, km/h, kts, Beaufort
Temperature in °F or °C
Humidity in %
Additional measurements of dewpoint, wind chill and heat stress index
Data Logger (automatic and manual)
Minimum, Maximum and Average values
Multi-Function 3-line display
Impeller can be replaced without tools
Humidity sensor can be recalibrated in the field with our Relative
Humidity Calibration Kit.
Graphical Display for logged values
Upload to a computer (with optional interface)
Backlight for low light conditions
Includes neck and wrist lanyards, protective pouch and 2 AAA batteries
2-year warranty
Assembled in the USA
US Patent Nos. 5,783,753 and 5,939,645 and 6,257,074
Specifications
Air Velocity
Accuracy ±3%
Response Time 1 second
Calibration Drift <2% after 100 hours use at 7m/s
Units Display Resolution Range
Knots KTS 0.1 0.6 to 78
Meters per Second M/S 0.1 0.3 to 40
Kilometers per Hour KM/H 0.1 1.0 to 144
Miles per Hour MPH 0.1 0.7 to 89
Feet per Minute FPM 1 59 to 7877
Beaufort Force BEAU 1 1 to 16
Air Flow
Accuracy ±3%
Response Time 1 second
Calibration Drift <2% after 100 hours use at 7m/s
Units Display Resolution Range
Cubic Feet per Minute cfm 1 0 to 99,999
Liters per Second L/s 1 0 to 99,999
Cubic Meters per Second m³/s 1 0 to 99,999
Cubic Meters per Minute m³/m 1 0 to 99,999
Cubic Meters per Hour m³/h 1 0 to 99,999
Temperature
Accuracy
Temperature ±1°C
Wind Chill ±1°C
Dew Point ±2°C
Heat Index ±3°C
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Response Time approximately 1 minute for most conditions
Units Display Resolution Range
Celsius °C 0.1 -29 to 70
Fahrenheit °F 0.1 -20 to 158
Relative Humidity
Accuracy ±3%
Response Time approximately 1 minute for most conditions
Calibration Drift ±2% over 24 months (can be field calibrated)
Units Display Resolution Range
Percent % 0.1 5 to 95%
Display
Update 1 second
Temperature Range Normal operation from -20°C to 60°C [-4°F to 140°F].
Below
-20°C [-4°F], accurate readings may be taken by keeping the unit warmer
than -20°C [-4°F] and exposing it for the minimum time necessary to
take a reading (less than 1 minute).
Storage Temperature -30°C to 60°C [-22°F to 140°F].
Auto Shutdown After 15 minutes of no button presses. (This feature
can be disabled.)
Physical
Battery Two AAA alkaline batteries (included). Typical life, 400 hours.
Impeller 25 mm. [1in.] diameter, sapphire bearings, light weight.
User-replaceable impeller/housing assembly.
Temperature Sensor Hermetically sealed precision thermistor.
Humidity Sensor Solid state silicon capacitive sensor.
Dimensions 12.7 x 4.5 x 2.8 cm. [5 x 1.8 x 1.1 in.]
Weight 102 g. [3.6 oz.]
Warranty Standard 2-year covers parts and labor.
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