Kestrel 2500NV Pocket Weather Meter
Features
Sensor Specifications
Wind Speed |
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| Selections: | mph | kt | B | m/s | ft/min / km/h |
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| Accuracy (+/-): | Larger of 3% of reading, least significant digit or 20 ft/min |
| Notes: | 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 (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. *F/S only in Ballistics units. Beaufort not available in Ballistics units. |
Ambient Temperature |
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| Selections: | Fahrenheit, Celsius |
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| Notes: | Hermetically sealed, precision thermistor mounted externally and thermally isolated (US Patent 5,939,645) for rapid response. Airflow of 2.2 mph|1 m/s or greater provides fastest response and reduction of insolation effect. Calibration drift negligible. Thermistor may also be used to measure temperature of water or snow by submerging thermistor portion into material -- remove impeller prior to taking submerged measurements and ensure humidity sensor membrane is free of liquid water prior to taking humidity-based measurements after submersion. |
Pressure |
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| Selections: | inHg, hPA, mb |
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| Notes: | 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. |
Calculated Measurements
Wind Chill |
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Barometric Pressure: |
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Altitude |
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Downloads:
With it's night vision preserving backlight, the 2500NV pocket weather meter is a great companion to have during day and night time excursions
Predict fish and wildlife activity as well as when bad weather is headed your way with the three-hour pressure trend indicator. With its easy-to-use digital pressure altimeter, you have the perfect instrument for any outdoor activity - get conditions in seconds right in the palm of your hand. In addition to predicting weather activity, barometric pressure also influences a bullet’s trajectory, which is why the Kestrel 2500NV is used by shooters and hunters when accuracy is important.
Environmental Measures:
- Current Wind Speed
- Maximum Wind Gust
- Average Wind Speed
- Temperature
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Altitude (Pressure Based)
- Barometric Pressure
- Pressure Trend
- Wind Chill
The Kestrel 2500NV in Olive Drab with NV has a night-vision preserving backlight which helps users to sustain natural night vision. The NV's backlight incorporates an optical filter to reduce overall brightness and minimize blue and green spectrum light to preserve night vision. Additionally, NV backlights are also much dimmer than a standard backlight, making it more difficult to detect with the naked eye in night operations. This backlight appears soft greyish pink, not red, and is still in the visible spectrum, so it is not compatible with night-vision equipment. It takes 30 to 45 minutes for the average eye to adapt to darkness and maximize night vision. Even a short burst of white, yellow, green or blue light “bleaches out” the rod cell photo-receptors in the eye and causes night blindness until the entire adaptation process can take place again. Light in the red spectrum does not cause this “bleaching out”, preventing night blindness and night vision fatigue.
Features:
- Simple 3-Button Control
- High Contrast, Sunlight Readable Monochrome LCD Display
- Backlight: Night Vision Preserving
- Temperature Sensor (Patented External Isolated)
- CR2032 Coin Cell Battery (Average Life 300 Hours)
- Data Hold Function
- Drop-Tested to MIL-STD-810G
- Waterproof to IP67 (3'/1M for 30 minutes)
- Kestrel Certificate of Conformity
- Neck Lanyard
- Patented Impeller and Sensor Technology
- Slip-On Protective Cover
- Time of Day
- User-Replaceable Battery
- User-Replaceable Impeller
- Waterproof & Floats
- Designed and built in the USA
Kestrel 2500NV Specifications and Dimensions
- Dimensions: 4.8 x 1.7 x 0.7 in. / 122 x 42 x 18 mm
- Weight: 2.3 Ounces / 65 Grams
- Kestrel 2500 Certificate of Conformity (PDF)
- Kestrel 2500 Sensor Specifications (PDF)
- Kestrel 2500 Manual (PDF)
- MFG Part# 0825, Model# 2500 (Orange)
- MFG Part# 0825NV, Model# 2500NV (Olive Drab)
What's in the box?
- Kestrel 2500NV Meter
- Neck Lanyard
- Slide-On-Cover
- CR2032 Coin Cell Battery (average life 300 hours)
- Certificate of Conformity with Sensor Specifications
- Manual
- 5 Year Warranty Manufacturers Warranty
QUESTIONS & ANSWERS
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