The KTL 1000 Pocket Wind Meter is very accurate, very tough and very affordable.
Measures Air Speed (Velocity) on HEPA equipment inlet and exhaust. Air flow velocity can be easily converted to Cubic Feet of Air (CFM) Flow, see "Air Flow Conversion Formulas" below.
· The NK Kestrel 1000 Pocket Wind Meter is very accurate, very tough and very affordable.
· You can carry it in a pocket, hold it in one hand, and use it whenever and wherever you need to know wind speed.
· It features a large liquid crystal display which is easy to read under almost any conditions and offers three operating modes - wind speed, average wind speed, and maximum wind speed.
· The display units can be changed at any time, with choices to suit a wide variety of applications (knots, meters per second, kilometers per hour, miles per hour or feet per minute).
· To measure wind speed, the Kestrel relies on a precision ultralight impeller mounted in jewel bearings.
· This impeller yields high accuracy (± 3%) and a low startup speed (0.3 M/S).
· It is shock-mounted in a glass-reinforced plastic housing which can simply be popped out and replaced with a new assembly in the event that the impeller mechanism becomes worn or damaged.
· The Kestrel is waterproof and floats.
· The hard case slips on and off easily and protects the display and all moving parts from damage.
· Performance is guaranteed for one full year.
· US Patent No. 5,783,753
Performance Specifications
On-axis Accuracy: +/-3% of reading or +/-least significant digit, whichever is greater.
Off-axis Response: -1% @ 5 °, -2% @ 10 °, -3% @ 15 °.
Calibration Drift: <2% after 100 hours operation at 7 M/S
Minimum Speed: 0.3 M/S (~0.6 KT, 1KM/H, 0.7 MPH, 60 FPM).
Maximum Speed: 40 M/S (~78 KT, 144 KM/H, 89 MPH, 7830 FPM). Some loss of accuracy from bearing wear may occur with sustained operation over 25 M/S.
Display Specifications
Operating Modes: Moving three second average (wind speed), average since power on (AV) or maximum three second gust since power turned on (MAX).
Type: Reflective LCD.
Digit Height: 10 mm (0.4 in.).
Update: 1 second.
Range: 0.0 to 19.9, 20 to 199.
Units: Knots (KT), meters per second (M/S), kilometers per hour (KM/H), miles per hour (MPH) or feet per minute (FPM).
Operation Specifications
Buttons: Two sealed tactile rubber buttons control all functions.
Auto Shutdown: 30 minutes after last key press.
Battery: User-replaceable CR2032 coin cell. Typical life, 400 hours.
Environmental Specifications
Sealing: Electronics enclosure IP67 - water resistant to 1meter (3feet). Unit floats.
Shock: Drop tested to 2meters (6feet).
Temperature: Operating range -15 °C to 50 °C (5 °F to 122 °F). Storage range -20 °C to 80 °C (-4 °F to 176 °F).
Physical Specifications
Impeller: Diameter 25mm (1in.). High precision jewel bearings. User replaceable impeller assembly.
Case: Slip-on hard case protects display, buttons and impeller.
Dimensions: Unit, 122 x 42 x 14 mm (4.8 x 1.7 x 0.6 in.); case, 117 x 46 x 19 mm (4.6 x 1.8 x 0.7 in.); lanyard, 0.5 m (10 in.).
Weight: Unit, 43 grams (1.5 ounces); case, 23 grams (0.8 ounces).
Full one-year warranty on entire system, covering manufacturing defects.
