To Next PageTo Next PageWhy does my Kestrel 2500 Weather Station lose accuracy at high speeds?
If your Kestrel Weather Station has experienced numerous hours of sustained operation over 25 M/S (~49 KT, 90 KM/H, 56 MPH or 4,923 FPM), it may lose some accuracy due to wear of the pivot and bearings in the impeller.
What to do if I need to recalibrate wind speed on my Kestrel 2500?
You may recalibrate the wind speed readings of your Kestrel Weather Station by replacing the impeller.
General| Brand | Kestrel |
|---|---|
| Product Category | Weather Station |
| Measures | Wind Speed, Temperature, Humidity, Barometric Pressure, Dew Point, Wind Chill, Heat Stress Index, Altitude |
| Resolution Humidity | 0.1% |
| Battery Life | 400 hours |
| Water Resistance | IP67 |
| Display | LCD |
| Temperature Range | -20°F to 158°F (-29°C to 70°C) |
| Humidity Range | 5 to 95% |
| Barometric Pressure Range | 23.62 to 32.50 inHg |
| Accuracy Wind Speed | ±3% |
| Accuracy Temperature | ±1 °F |
| Accuracy Humidity | ±3% |
| Resolution Wind Speed | 0.1 mph |
| Resolution Temperature | 0.1 °F |
| Resolution Barometric Pressure | 0.01 inHg |
| Units of Measure | Imperial or Metric |
| Data Logging | Yes |
| Connectivity | No |
| Measurement Units | m/s, km/h, ft/min, mph, knots, °C, °F, hPa, mbar, inHg |
| Wind Chill Range | -40 to 50 °F |
| Accuracy Barometric Pressure | ±0.05 inHg (±1.7 hPa, ±1.3 mmHg) |
Scroll through measurements using arrow buttons for display. (See Understanding the Measurements section for more information.)
Hold a button and press another to scroll through available units of measure for different modes.
Press buttons to hold time and all measured values. 'HOLD' blinks to indicate the mode.
Press a button to activate the backlight for 10 seconds.
Simultaneously press buttons to adjust clock. Use arrow buttons to change time, hold for speed.
Hold a button for 2 seconds to manually turn off. Unit powers off automatically after 45 minutes of inactivity.
Average over the previous three seconds. Accurate for air flow through front or rear.
Maximum 3-second wind speed since unit was turned on.
Average wind speed since the unit was turned on.
Instantaneous temperature of the thermistor located in the open cavity below the impeller.
Combination of wind speed and temperature, as defined by US National Weather Service.
Measures station pressure to calculate barometric pressure and altitude. Affected by air pressure and altitude changes.
Obtain current barometric pressure from an internet site or airport and set as reference.
Obtain altitude from map or landmark, set as reference on BARO screen for barometric pressure.
Enter correct reference pressure on ALTITUDE screen to track altitude changes during hike.
Reset reference pressure regularly for accurate altitude readings, especially with elevation landmarks.
Set reference altitude on BARO screen to '0' to display actual/station pressure without adjustment.
The Kestrel Meter is fully waterproof and floats, and has passed mil-spec drop testing.
Avoid storing where exposed to temperatures below -30°C or above 60° C to prevent permanent damage.
Secure the cover on the lanyard to avoid loss by feeding the lanyard through the large opening and out the slot.
Replace CR2032 coin cell batteries when display dims. Use a coin to open battery compartment.
Oscillation of the impeller as it stops is normal; it is due to a small magnet, not imbalance.
Sustained operation over 25 M/S can cause wear, leading to reduced accuracy.
Recalibrate wind speed readings by replacing the impeller assembly. Press sides to remove/insert.
NV backlight uses an optical filter to reduce brightness and preserve night vision. Appears greyish-pink.
White/colored light causes night blindness. Red light does not cause bleaching, preventing night blindness.
Sensors are factory calibrated. For recalibration, return to Nielsen-Kellerman or contact NK for instructions.
System for estimating wind force based on visible effects on the environment, rated on a 13-point scale.
Designed for years of performance in tough conditions. Made in NK's facility in Boothwyn, PA.
Return within 30 days for full refund if not satisfied with performance or operation.
Guarantees against defects in materials and workmanship for five years from date of purchase.
Excludes damage from improper use, neglect, impact, modifications, or normal wear. Recalibration is free within 30 days.
Register your NK product promptly on the website for full warranty coverage. Proof of purchase is required.
Trade-in any Kestrel meter for a discount on a replacement product (same model) as long as it is manufactured.
Products are tested and calibrated before shipping. Certificate of Conformity included. Recalibration offered.
Measurements are traceable to NIST, ensuring highest accuracy. Calibration standards are sent for NIST calibration.
Full factory service offered for the product's lifespan. Brand-new replacement offered if repair is not possible.
Description of the American Kestrel falcon, known for its adaptability and ability to hover and dive.
Lists US patents covering the Kestrel 2500 and trademarks of Nielsen-Kellerman Co.
