Kestrel 3500 Pocket Weather Meter

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100% of 100

Split second decisions in the field leave no time for guesswork. Get every environmental condition in seconds.

$194.00
Availability: In stock
SKU
0835

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  • Rugged, simple and accurate wind speed, temperature, humidity, and pressure meter.
  • Calculates relative humidity, altitude, barometric pressure, pressure trends, heat index, wind chill, wind speed and more.
  • Data hold feature, clock and backlit display for night time use.

Kestrel 3500 Pocket Weather Meter Overview

Environmental Measures
Dew Point Temperature
Heat Stress Index
Relative Humidity
Temperature
Wet Bulb Temperature (Psychrometric)
Wind Chill
Wind Speed/Air Speed
Tips For Taking Accurate Measurements

Split second decisions in the field leave no time for guesswork. Get every environmental condition in seconds with the affordable, reliable Kestrel 3500. The Kestrel 3500 pocket weather meter is a rugged, multi-function wind and weather meter that measures all the environmental variables, including wind speed, that you need to calculate accurate ballistic solutions and train your environmental insight at the range. Designed to be your trouble-free companion, the Kestrel 3500 comes with a hard, rubberized slip-on cover that protects the display and impeller, even when tossed in your range bag or pack. Don’t settle for an Asian-made weather meter of questionable accuracy – step up to Kestrel for guaranteed accuracy and reliability that’s designed and built in the USA.

Note: The Kestrel 3500 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 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 photoreceptors 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.

Kestrel Weather & Environmental Meters are designed & manufactured in the U.S.A and are backed by our 5-year warranty. Innovatively designed for stability and accuracy in abrupt condition changes. Rugged and durable, Kestrels are drop tested, waterproof and designed to float if dropped in water.

  • Ballistics Environment
  • Fishing
  • Hiking / Mountaineering
  • Meteorology
  • Sailing & Boating
  • Storm Chasing
  • Weather Monitoring
  • Wind Surfing
  • 3-Button Control
  • Backlight blue white
  • Data Hold Function
  • Date & Time
  • Drop-Tested to MIL-STD-810G
  • Field Humidity Calibration/Correction Routine
  • Floats
  • Hard Slip-On Protective Cover
  • High Contrast, Sunlight Readable Monochrome LCD Display
  • Minimum/Maximum/Average Reading
  • Pressure Sensor
  • Relative Humidity Sensor
  • Temperature Sensor (Patented External Isolated)
  • Waterproof to IP67 (3'/1M for 30 minutes)
  • Battery - 1 x CR2032
  • Certificate Of Conformity (Spec Sheet)
  • Instructions
  • Lanyard
  • Protective Cover - Hard Slip-on
SENSORS
SENSORS 1
0
0
0
2
0
0
0
2
5
0
0
3
0
0
0
3
5
0
0
3
5
0
0
D
T
ACCURACY
(+/-)*
RESOLUTION SPEC. RANGE OP. RANGE NOTES
Wind Speed | Air Flow Larger of 3% of reading, least significant digit or 20 ft/min 0.1 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 F/S*
0.6 to 60.0 m/s
118 to 11,811 ft/min
2.2 to 216.0 km/h
1.3 to 134.2 mph
1.2 to 116.6 knots
0 to 12 B*
2-196.9 F/S*
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. *F/S only in Ballistics units. Beaufort not available in Ballistics units.
Ambient Temperature 0.9 °F
0.5 °C
0.1 °F
0.1 °C
-20.0 to 158.0 °F
-29.0 to 70.0 °C
14.0.0 to 131.0 °F
-10.0 to 55.0 °C
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.
Relative Humidity 3.0 %RH 0.1 %RH 5 to 95%
non-condensing
0 to 100% Polymer capacitive humidity sensor mounted in thin-walled chamber external to case for rapid, accurate response (US Patent 6,257,074). To 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 +/- 2% over 24 months. Humidity sensor may be recalibrated at factory or in field using Kestrel Humidity Calibration Kit (NK PN-0802).
Pressure 1.5hPa|mbar
0.044 inHg
0.022 PSI
0.1 hPa|mbar
0.01 inHg
0.01 PSI
25°C/ 77°F
750-1100 hPa|mbar
22.15-32.48 inHg
10.88-15.95 PS
0.30 to 48.87 inHg
10.0 to 1654.7
hPa|mbar
0.14 to 24.00 PSI
and
14.0 to 131.0 °F
-10.0 to 55.0 °C
Monolithic silicon piezoresistive pressure sensor with second-order temperature correction. Pressure sensor may be recalibrated at factory or in field. Adjustable reference altitude allows display of station pressure or barometric pressure corrected to MSL. Kestrel 4200 displays station pressure on a dedicated screen. Kestrel 2500 and 3500 display continuously updating three-hour barometric pressure trend indicator: rising rapidly, rising, steady, falling, falling rapidly. Kestrel 4000 series displays pressure trend through graphing function. PSI display on Kestrel 4000 series only.
Compass
1/16th Cardinal
Scale
0 to 360° 0 to 360° 2-axis solid-state magnetoresistive 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
MEASUREMENT 1
0
0
0
2
0
0
0
2
5
0
0
3
0
0
0
3
5
0
0
3
5
0
0
D
T
ACCURACY
(+/-)*
RESOLUTION SPEC. RANGE SENSORS EMPLOYED NOTES
Altitude typical:
23.6ft/7.2m
max:
48.2ft/14.7m
1ft
1m
typical:
750 to 1100 mBar
max:
300 to 750 mBar
Pressure User Input (Reference Pressure) Height above Mean Sea Level ("MSL"). Temperature compensated pressure (barometric) altimeter requires accurate reference barometric pressure to produce maximum absolute accuracy. Both accuracy specs corresponds to a reference pressure anywhere from 850 to 1100 mBar.
Barometric Pressure 0.07 inHg
2.4 hPa|mbar
0.03 PSI
0.01 inHg
0.1 hPa|mbar
0.01 PSI
Refer to Ranges for Sensors Employed Pressure User Input (Reference Altitude) Air pressure that would be present in identical conditions at MSL. Station pressure compensated for local elevation provided by reference altitude. Requires accurate reference altitude to produce maximum absolute accuracy
Delta T 3.2 °F
1.8 °C
0.1 °F
0.1 °C
Refer to Ranges for Sensors Employed Temperature
Relative Humidity
Pressure
Difference between dry bulb temperature and wet bulb temperature. When spraying, indicates evaporation rate and droplet lifetime. Safe range for pesticide spraying is 4 to 16 °F / 2 to 9 °C.
Dew Point 3.4 °F
1.9 °C
0.1 °F
0.1 °C
15 to 95 % RH
Refer to Range for Temperature Sensor
Temperature Relative Humidity Temperature that a volume of air must be cooled to at constant pressure for the water vapor present to condense into dew and form on a solid surface. Can also be considered to be the water-to-air saturation temperature.
Heat Index 7.1°F
4.0°C
0.1 °F
0.1 °C
Refer to Ranges for Sensors Employed Temperature Relative Humidity Perceived temperature resulting from the combined effect of temperature and relative humidity. Calculated based on NWS Heat Index (HI) tables. Measurement range limited by extent of published tables
Wet Bulb Temperature - Psychrometric 1.6 °F
0.9 °C
0.1 °F
0.1 °C
Refer to Ranges for Sensors Employed Temperature
Relative Humidity
Pressure
Temperature indicated by a sling psychrometer. Due to nature of the psychrometric ratio for a water-air system, this approximates the thermodynamic wet-bulb temperature. The thermodynamic wet-bulb temperature is the temperature a parcel of air would have if cooled adiabatically to saturation temperature via water evaporating into it.
Wind Chill 1.6 °F
0.9 °C
0.1 °F
0.1 °C
Refer to Ranges for Sensors Employed Wind Speed
Temperature
Perceived temperature resulting from combined effect of wind speed and temperature. Calculated based on the NWS Wind Chill Temperature (WCT) Index, revised 2001, with wind speed adjusted by a factor of 1.5 to yield equivalent results to wind speed measured at 10m above ground. Measurement range limited by extent of published tables.
ADDITIONAL SPECIFICATIONS
MEASUREMENT 1
0
0
0
2
0
0
0
2
5
0
0
3
0
0
0
3
5
0
0
3
5
0
0
D
T
NOTES
Display & Backlight Reflective 3 1/2 digit LCD. Digit height 0.36 in / 9 mm. Aviation green electroluminescent backlight. Manual activation with auto-off
Reflective 5 digit LCD. Digit height 0.36 in / 9 mm. Choice of aviation green or visible red (NV models only) electroluminescent backlight. Manual activation with auto-off.
Response Time & Display Update All measurements except those based on relative humidity respond accurately within 1 second. Relative humidity and all measurements which include RH in their calculation may require as long as 1 minute to fully equilibrate to a large change in the measurement environment. Display updates every 1 second.
Max/Avg Wind One-button clear and restart of Max Wind Gust and Average Wind measurement.
Data Upload & Bluetooth® Data Connect Option Requires optional PC interface (USB or RS-232) or Bluetooth data transfer option and provided software.
Bluetooth Data Transfer Option: Adjustable power consumption and radio range from up to 30 ft | 9 meters. Individual unit ID and 4-digit PIN code preprogrammed for easy identification and data security when pairing and transmitting. Employs Bluetooth Serial Port Protocol for data transmission.
Clock / Calendar Real-time hours:minutes clock.
Auto Shutdown After 45 minutes of no key presses.
Languages English
Certifications CE certified, RoHS and WEEE compliant. Individually tested to NIST-traceable standards (written certificate of tests available at additional charge).
Origin Designed 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 Life CR2032, one, included. Average life, 300 hours. Battery life reduced by backlight use in 2000 to 3500 models.
Shock Resistance MIL-STD-810g, Transit Shock, Method 516.6 Procedure IV; unit only; impact may damage replaceable impeller.
Sealing Waterproof (IP67 and NEMA-6).
Operational Temperature Limits 14° 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 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 & Weight 4.8 x 1.9 x 1.1 in / 12.2 x 4.8 x 2.8 cm, 3.6 oz / 102 g (including slip-on cover).

* NOTE: Accuracy calculated as uncertainty of the measurement derived from statistical analysis considering the combined effects from primary sensor specifications, circuit conversions, and all other sources of error using a coverage factor of k=2, or two standard deviations (2Σ).

Kestrel Basic (1000-3500) Instruction Manuals

Relative Humidity Calibration Kit For calibrating the following Kestrel Meters 3000, 3500, 4000, 4200, 4250, 4300, 4400, 4500, 4600

User Guide for the Kestrel 1000 , 2000 , 2500 & 2500 NV , 3000 , 3500 & 3500 NV , 3500 DT

User Guide Relative Humidity Calibration Kit 3000, 3500, 4000,4200, 4250,4300, 4400, 4500, 4600 (Not to be used for calibrating Kestrel 5 Series units or Kestrel DROPs)

Kestrel 5 Series Downloads

Information about the Kestrel Agricultural Line of weather meters

Recommended Modifications to Athletic Participation Based on the Heat Index

Recommended Modifications to Athletic Participation Based on the Heat Index Celsius

Version 1.22

American College of Sports Medicine - Acclimatized WBGT Guidelines on Heat illness and what to do

Kestrel Firmware Version 1.22 Update Installer for OSX

Kestrel Firmware Version 1.22 Update Installer for Windows

Korey Stringer Small Price of Survival Article 2016-09 Regarding Heat Stress

nist-calibration-wind-speed-example

wind measurement and long-range shooting, SME NVDOC1403-Wind

sources of inaccuracy in long-range shooting

Step by step support Guide to transfer your Applied Ballistics Gun Profiles from a 4000 series Kestrel to a 5000 series Kestrel

Tips for taking accurate measurements Support tab at www.kestrelinstruments.com

How to Figure out Average Wind Direction with a Kestrel 5000 Series Unit.

The attached links will help with determining average wind direction and the use of a wind rose. The documents would be pertinent to any of the 5500 models, especially important for spray drift and measurements in the protected zones.

Product Safety and Warranty Kestrel 5000 Series

Kestrel 4 Series Instruction Manuals

Kestrel Communicator Software Instructions

Instruction Manual Kestrel 4000 Series Weather & Environmental Meters 4000, 4200, 4250, 4300, 4400, 4500 and 4600

Instruction Manual Kestrel Heat Stress Tracker 4400 & 4600

User Guide for the Ketsrel 4000 Portable Vane Mount

K4

User Guide for the 5700 Sportsman AB

Kestrel Heat Stress Trackers WBGT Reference Guide

A checklist to help troubleshoot bluetooth classic connection issues.

Kestrel 5 Series Instruction Manuals

User Guide for the Kestrel 5000, 5100 and 5200

User Guide for the Kestrel 5500 Weather Meter

Kestrel 5400 Heat Stress Tracker User Guide

Kestrel 5500 Fires Weather Pro & Kestrel 5400 Fire Weather Pro with WBGT User Guide

Kestrel 5000AG Livestock Environmental Meter & Kestrel 5400AG Cattle Leat Stress Tracker User Guide

Kestrel 5 Series Instruction Manuals (Ballistics)

Kestrel 5700 Ballistics Weather Meter and Kestrel Elite Weather Meters with Applied Ballistics User Guide

Applied Ballistics Profile Loader Version 33

The driver needed to connect your kestrel to your computer via USB.

Updating your Horus Firmware 4.93

Applied Ballistics Help Files

Getting Started With your Kestrel Ballistics Product

A 10 step guide to setup your Kestrel to work with your gun.

Get started with your Kestrel 5700 and this Easy Mode Quick Start guide.

Get started with your Kestrel 5700 Elite and this Easy Mode Quick Start guide.

LiNK (Kestrel)

Instructions for the use of the Kestrel LiNK App

Setting up Alert Services on Kestrel LiNK Application for Multiple People

Troubleshooting Bluetooth Dongle Issues with the Kestrel 5000 Series Models and LiNK for Windows.

Kestrel LiNK Version 1.04.03 for OSX

Kestrel LiNK Version 1.04.03 for Windows

This tutorial will show you how to create a graph of the data that you exported from your Kestrel 5000 series or Kestrel DROP using one of the Kestrel LiNK applications.

A simple guide to help you update your Firmware on your Kestrel using LiNK for Android

A simple guide to help you update your Firmware on your Kestrel using LiNK for Windows

An application that can be used to view and analyze your Kestrel data on an iOS device.

An application that can be used to view and analyze your Kestrel data on an Android device.

Download the Kestrel LiNK Ballistics app from the google play store.

An iOS application to view you Kestrel Ballistics data.

Please see the attached guidance for problems and export issus with Kestrel LiNK iOS.

DROP Data Logger Instruction Manuals

Getting Started with Kestrel DROP Wirelss Environmental Data Loggers

Kestrel 5 Series Certificates of Comformity

Kestrel 5 Series specification chart

Kestrel 5400 Heat Stress Tracker specification chart

Shows a sample of the paperwork when doing a NIST Temperature calibration on Kestrel

Shows a sample of the paperwork when doing a NIST Humidity calibration on a Kestrel

Shows a sample of the paperwork when doing a NIST Pressure calibration on a Kestrel

Shows a sample of the paperwork when doing a NIST Globe Temperature calibration on a Kestrel

Shows a sample of the paperwork when doing a NIST Wind calibration on a Kestrel

Example of the paperwork received when doing a Kestrel Tune-Up

Example of the paperwork after performing a Kestrel Temperature Factory Calibration (not NIST)

Kestrel Basic (1000-3500) Certificates of Comformity

EMC DECLARATION OF CONFORMITY 2500, 2500NV, 3500, 3500NV

EMC DECLARATION OF CONFORMITY 1000, 2000, 3000

Product Specifications Certificate of Conformity Kestrel Weather Meters Model Numbers 1000-3500

Product Specifications Certificate of Conformity Kestrel Weather Meters Model Numbers 1000-3500 with Serial #’s lower than 2262687.

Kestrel 4 Series Instruction Manuals (Ballistics)

Instruction Manual for Kestrel 4500 Shooter's Weather Meter with Horus Atrag Ballistics Software

Instruction Manual for Kestrel 4500 Shooter's Weather Meter with Applied Ballistics

Application Instructions Applied Ballistics Profile Loader (Build 050)

Upgrading Your Kestrel Shooter’s Weather Meter with Applied Ballistics to Firmware Version 4.85

Overview of the setup and use of the Kestrel 4500 Shooter's Weather Meter with Applied Ballistics

Kestrel Companion is a Android app that will communicate with Kestrel 4500 Sportsman and Applied Ballistic Bluetooth units.

Gun Loader 204

Kestrel 4 Series Troubleshooting Documents

Connecting my 4000 Series Kestrel Using Bluetooth

FAQ Connecting your Kestrel 4XXX Series to a MAC

FAQ How to update the Kestrel 4500 firmware using the NK Bootloader Program

FAQ How to update the Kestrel 4500 firmware using the NK Bootloader Program1

Connecting your Kestrel to a PC Bluetooth Tutorial

DROP Data Logger Certificates of Comformity

Kestrel DROP Wireless Environmental Data Logger specification chart

Kestrel 4 Series Certificates of Comformity

Certificate of Conformity (COC) Kestrel 4400 & 4600

EMC DECLARATION OF CONFORMITY 4000, 4000NV, 4100, 4200, 4250, 4300

EMC DECLARATION OF CONFORMITY 4400, 4400BT

EMC DECLARATION OF CONFORMITY 4500, 4500NV

Kestrel 4 Series Downloads

Application that allows gun profile transfers for the Kestrel 4500 Horus units.

Kestrel Horus Help Files - Connecting with Bluetooth and FAQs

Updating your Kestrel AB Firmware to 4.93 - Bluetooth and Non Bluetooth models

Updating your Kestrel Sportsman with AB Firmware to 4.93 - Bluetooth and Non Bluetooth models

Kestrel Communicator Interface Software, v 2.1.1 compatible with ALL Kestrel 4000 series models

Prolific USB to serial driver

Windows compatible PC Interface Driver For use with Kestrel 4 to connect and transfer data to a PC

Updating your Applied Ballistics Firmware 4.93

Updating your Horus Firmware to 4.93 on K4 Unit - Bluetooth and Non-Bluetooth units

Use this link to upgrade your Kestrel 4500 Bluetooth Firmware 4.93

Use this link to upgrade your Kestrel 4500 Firmware 4.93 for Non Bluetooth Units

images

Kestrel 1000, 2000, 2500, 3000, 3500, 4000, 4200, 4250, 4300 Images

K5_Series_Accessories

Kestrel 5 Series Product Descriptions

Kestrel Drop Images

Kestrel Logo Files

Web Banners Graphics

Dealer

Marketing for Kestrel Heat Stress Trackers

Web Banners Graphics

Cattle Heat Stress Images

Fire Weather Photos

Kestrel 1000 Images

Kestrel 2000 Images

Kestrel 3000 Images

Kestrel 3500 DT Images

Kestrel 5000 Images

Kestrel 5100 Images

Kestrel 5200 Images

Kestrel_Sportsman_Marketing_Materials

Kestrel_2500 Images

Kestrel_3500 Images

Kestrel_5400_Images

k4400,_K4500s,_KDROP_Images

Kestrel_5500_Images

Kestrel_Elite_Images

LiNK (Kestrel Ballistics)

A quick guide to update your Kestrel LiNK Ballistics for Android firmware.

A simple guide to help you update your Firmware on your Kestrel using LiNK for iOS

Applied Ballistics Profile Loader - Version 50

Kestrel 5 Series Troubleshooting Documents

How to transfer gun profiles from 4500 series to 5700 series

Connecting my Kestrel using Bluetooth for Windows 8

Get help connecting my Kestrel 5 series unit to my computer using a bluetooth dongle.

Picture showing the places to take measurements for square and rectangular air ducts

Air Flow Diagram

Find answers to common Bluetooth connection issues

Tutorial on how to update your Kestrel 5000 series firmware using LiNK for Windows.

Tutorial on how to update your Kestrel 5000 series firmware using LiNK for MAC/OSX

CoxBox Boat Wiring

4+ 2 Speaker Setup

8+ 3 speaker set up

4+ 2 Speaker Set Up

8+ 3 Speaker Setup

All Wiring Setup

SpeedCoach/StrokeCoach Downloads

SUP Training Program from Eccentric Motion System / Paddle Power Trainer Mick

Installation, Basic Operations, Setup Menu, Advanced Setup, Specifications, Menu Navigation, Memory, GPS Function and Accuracy, Workouts, Impeller Calibration, Battery Use and Charging

Mick's SUP Training Plan

NK_SUP_Training_Book_Chase

SUP Training Program from Eccentric Motion System / Paddle Power Trainer Mick

Speed_Coach_8_week_Training_Plan_From_Mick

Release notes for SpeedCoach GPS, SUP & OC (Version 2.19) - 06/07/18

Version 2.19 - 06/07/18 Implements Live Streaming

Example of exported CSV file from SpeedCoach Model 2. Does not include oarlock data.

Example SUP data that can be exported from SpeedCoach SUP Model 2 as a CSV file

Example SUP workout data that can be exported from SpeedCoach SUP Model 2 as a CSV file

Program for downloading data from the SpeedCoach Gold or SpeedCoach XL products only.

Version 2.19 - 06/07/18 Implements Live Streaming

SpeedCoach GPS JustGo

SPC_GPS_2_Just_Go_Files_2

Example of exported CSV file from SpeedCoach Model 2. Does not include oarlock data.

SpeedCoach/StrokeCoach Instruction Manuals

SpeedCoach GPS Operations & Installation Manual

SpeedCoach GPS w/o and With Heart Rate, Installation Additional Functions, Basic Opterations, Impeller Calibration, GPS Function and Accuracy, Specifications

StrokeCoach User Manual, Installation, Operation, Backlight, Memory, Battery Replacement, Maintenance

SpeedCoach® Interface Upload Software Instructions

SpeedCoach SUP w/ and w/o Heart Rate Basic Operation and Installation Instructions

SpeedCoach Gold User Guide, Installation, Operation, Memory, Calibration, Battery Replacement, Maintenance

SpeedCoach GPS Model 2 Includes Training Pack Upgrade, Installation, Basic Operations, Setup Menu, Advanced Setup, Specifications, Menu Navigation, Memory, GPS Function and Accuracy, Workouts, Impeller Calibration, Battery Use and Charging

SpeedCoach SUP Model 2 Includes Training Pack Installation, Basic Operations, Setup Menu, Advanced Setup, Specifications, Menu Navigation, Memory, GPS Function and Accuracy, Workouts, Impeller Calibration, Battery Use and Charging

SpeedCoach XL Coach's Mount

SpeedCoach XL Instruction Manual for XL1 and XL2 Models,Workout Modes, Menu Options and Set Up, Heart Rate Sensor (XL2 Model Only)

SpeedCoach XL3 and XL4 User Guide

SpeedCoach and SpeedCoach with Heart Rate Belt Instruction Manual

StrokeCoach Instruction Manual

SpeedCoach Interface Upload Software Instructions

SpeedCoach SUP & SpeedCoach SUP with Heart Rate Belt Instruction Manual

SpeedCoach Red User Guide

SpeedCoach XL Instruction Manual for XL1 and XL2

SpeedCoach OC Model 2 Instruction Manual

SpeedCoach Interface Upload Software Instructions

This is a quick start guide for getting NK Live LiNK connected and streaming data. This also describes how to view streaming data.

Blue Ocean Megaphone Instruction Manuals

A guide to help you utilize all the features of your new Megaphone

Blue Ocean Megaphone Specifications

CoxBox Instruction Manuals

CoxBox Maintenance Kit

CoxBox Panel Protector Installation Instructions

CoxBox Mini Operation, Maintenance, Battery Use, Battery Charging, Battery Messages

Microphone Installation Instructions

CoxBox Mini Dial removal and cleaning instructions

CoxBox Operation, Maintenance & Troubleshooting Guide

CoxBox Instruction Manual

SpeedCoach/StrokeCoach Wiring

SpeedCoach Wiring Installation Instructions

SpeedCoach Impeller Only Wiring Installation

Goes into detail on the different harnesses and mounts that you can use with a SpeedCoach.

SpeedCoach Wiring Diagram for a Single (1x)

SpeedCoach Wiring Installation Instructions

CoxBox Troubleshooting Documents

Replacing the Stroke Rate Sensor (HD Harness, Part Number 0214)

Replacing the Stroke Rate Sensor (Legacy Harness, Part Number 0212) This part will replace the stroke rate sensor that is installed in the shell - mounted on the deck under the seat magnet.

CoxBox Wiring Harness Repair "Pigtail" (Part # 3032)

329090 pg 2 Speakerplug_repair 3031

CoxBox Customer Operation and Diagnostic Guide

Speaker_Date_Code

Testing CoxBox Wiring in an 8 with a Multimeter

Troubleshooting document for the FAQ, Why am I getting Hi Deg Errors when charging the Cox Box?

SpeedCoach/StrokeCoach Troubleshooting Documents

A quick solution to fixing a heart rate belt that is displaying erratic readings

Comparison of SpeedCoach Model 2 Units: Rowing vs SUP vs OC

Replacing the Stroke Rate Sensor (HD Harness, Part Number 0214)

Replacing the Stroke Rate Sensor (Legacy Harness, Part Number 0212)

Some guidance on sending exported FIT files to 3rd party sites.

Default

NK_Rowing Catalog


Interval Watch Downloads

Interval_Watchware

LiNK (NKSports)

LiNK_Version_1.30

nklink_setup_1.30


Use the NK LiNK app to view your workout data on an iOS device. v 1.0.13

version 1.0.13

a detail listing of all changes made to the LiNK software

Interval Watch Instruction Manuals

Interval 2000 Split + Rate Watch Instruction Manual

Interval 2000XC Split Watch Instruction Manual

Interval Watchware Software Quick Start Guide

Support Documents for all Kestrels

Replacing the Kestrel Impeller

Fine Dead Fuel Moisture and Probability of Ignition Tables

Empower Oarlock Instruction Manuals

Detailed instructions to Install, Pair, Configure and Calibrate your EmPower Oarlock.

Empower Oarlock Downloads

Representative Oarlock Values by Class and Skill Levels

Shows you which size bushing you would need for the various sweep and sculling boats out there.

WORKOUT STROKE PROFILE TEMPLATE

ROWER COMPARISON TEMPLATE

Oarlock Template Tutorial

Troubleshooting the Pin Calibration Process - Shows common issues why swing calibration fails

EmPower Oarlock firmware version 1.01

OS X installer for EmPower Oarlock firmware version 1.01

Kestrel Basic (1000-3500) Troubleshooting Documents

If you are having issues with the Kestrel turning on after changing the battery, please see this document.


Models & SKUs:

  • Kestrel 3500: 0835
  • Kestrel 3500 with Night Vision: 0835NV

Support Documents for all Kestrels

Replacing the Kestrel Impeller

Kestrel Basic (1000-3500) Certificates of Comformity

Product Specifications Certificate of Conformity Kestrel Weather Meters Model Numbers 1000-3500

EMC DECLARATION OF CONFORMITY 2500, 2500NV, 3500, 3500NV

images

Kestrel 1000, 2000, 2500, 3000, 3500, 4000, 4200, 4250, 4300 Images

Kestrel Basic (1000-3500) Instruction Manuals

User Guide for the Kestrel 1000 , 2000 , 2500 & 2500 NV , 3000 , 3500 & 3500 NV , 3500 DT

Product Questions

"All measurements not available in all units"

Temperature Functions

For best accuracy when taking temperature measurements you must keep the air moving around the temperature sensor and keep the Kestrel out of prolonged, direct sunlight. If there is a strong breeze, just point the Kestrel into the wind. If there is no wind, swing the Kestrel around in a circle on its lanyard or rapidly wave it back and forth in hand. This ensures that the sensor measures the temperature of the air rather than the temperature of the case. Alternatively, if you have time, allow the Kestrel to rest where you want to measure the air temperature (NOT in your hand or in direct sunlight if there is no wind) until the case temperature equalizes with the air temperature. When equalized, the display will read a constant value. Be aware that this could take a few minutes, particularly if there is no wind.

Humidity Functions

One reason your Kestrel may not be reading accurate ambient humidity is because of proximity to humidity sources such as your hand, your body or the ground. Avoid covering the large humidity chamber opening on the case rear with your fingers. Keep all fingers below the finger groove and away from the chamber opening. Do not take reading that rely upon humidity with the Kestrel meter lying flat – raise it into the air vertically or stand it on its base and orient it into the wind or air flow. If a high level of accuracy is required for measurements involving humidity, do not hold the unit while taking measurements. Taking readings with the Kestrel in your hand or over your body can raise relative humidity by 5% or more. A Kestrel vane mount will isolate the Kestrel Meter from erroneous humidity influences and keep it oriented into the wind or air flow while taking measurements. Whenever you move your Kestrel Meter into a new environment wait until the primary sensor values have stabilized (Temperature, Humidity, etc.) before taking measurements that rely upon these values. After a large change in environmental condition, this may take 15 minutes or more, with humidity potentially taking the longest. If the humidity sensor housing (located above the rear label) is wet, the Kestrel cannot take an accurate humidity reading. If the sensor does become wet, shake the unit vigorously to remove the water, and then let it dry completely before use. If the sensor comes in contact with salt water, rinse it thoroughly with clean water, then shake it and allow it to dry. As is typical with humidity sensors, it is possible for the humidity sensor in the Kestrel to drift over time as described in the spec sheet. If your unit has a Humidity recalibration function, it can be returned to the factory or used with the Kestrel RH Calibration Kit to recalibrate its humidity readings.

Wind Meter Functions

Wind speed is highly dependent on surrounding obstructions such as buildings, yourself and the ground, with wind speeding up as it flows around and over obstacles and slowing down as it passes behind them. Even in an open area, Wind speed will be slower near the ground so ensure you are taking measurements at an appropriate height for your application. Hold the back of the unit directly into the wind. Holding the unit off-axis by 5° will reduce accuracy by 1%, 10° will reduce accuracy by 2% and 15° will reduce accuracy by 3%. Using a Kestrel Vane Mount will ensure the unit is correctly oriented into the wind and measuring accurate wind speeds. The Kestrel impeller housing can rotate in the unit. For best accuracy, ensure one of the three “arms” of the impeller housing is pointing straight up. The wind speed displayed by the Kestrel Meter is a 3 second rolling average. This allows the unit to provide a value that is more representative of the typical, ambient conditions but not capture peak speeds for instantaneous blasts of air.

Compass Functions

The compass in the Kestrel Meter is used for direction, crosswind, headwind/tailwind as well as for capturing various user inputs based on direction. When calibrating and when using the compass, it is important to hold the unit as vertically as possible. Any tilt in angle present when the unit is calibrated or when measurements are taken will negatively impact the accuracy of the compass reading. Many users will inadvertently tilt the Kestrel Meter away from themselves slightly when holding the unit. If a high level of accuracy is required, using a Kestrel vane mount on a leveled tripod for calibration and measurement can eliminate error.

Pressure Functions

All pressure and altitude measurements are made using the pressure sensor. Some units have a dedicated “Pressure” screen which shows Station Pressure, the raw pressure reading straight from the sensor. The Barometric Pressure measurement (Baro) displays the local Barometric Pressure using the Station Pressure measurement adjusted to the local altitude using the Reference Altitude value input by the user. The Altitude measurement displays the local altitude using the Station Pressure measurement combined with the Reference Baro value input by the user. To obtain an accurate barometric pressure or altitude readings, you must first know EITHER your location’s current barometric pressure OR your current altitude. If the Reference Altitude value is incorrect, the Barometric Pressure reading will also be incorrect. If the Reference Barometric pressure value is incorrect, the Altitude reading will also be incorrect. Because Barometric Pressure and Altitude are each dependent on the alternate reference value remaining constant, Barometric Pressure and Altitude cannot be accurately measured simultaneously. If your unit has a pressure recalibration function, a new Barometric Pressure calibration value may be input. If this value was not taken from a verified source (a local airport or weather station) with the Kestrel being calibrated at the same location as the reference device, pressure related measurements may be incorrect.

WBGT

When changing environments (such as moving form an air conditioned room to outdoors or removing the unit from your pocket) the unit requires between 8-15 minutes to equilibrate to its surroundings before taking readings. Take measurements at least 3 feet off the ground and in the same wind or air flow conditions as the people you are monitoring. Ensure the Kestrel is oriented into the wind and able to measure the full wind value. A tripod or pole mount and the Kestrel Rotating Vane Mount are ideal for ensuring accurate measurements. Differences in the reflectivity of ground surfaces such as grass or asphalt will impact measurements. Be sure to take measurements in the same solar/radiant heat environment as the people you are monitoring. Unlike best practices for other measurements, WBGT is intended to be taken in direct sunlight. As long as there is occasional wind the Kestrel has software that allows it to maintain an accurate WBGT reading despite being placed in direct sunlight.

Air Flow

Kestrel Professional Meters can calculate air flow through a duct by combining user input information about the size and shape of the duct with the measured air velocity. In addition to reading the instantaneous Air Flow off the main measurement screen, a more accurate result may be obtained by capturing an average air flow on the Min/Ave/Max screen while traversing the duct. Traversing consists of dividing the area of the duct into evenly sized sections and averaging the air flows at the center of all sections. By spending an equal amount of time at each measurement location and quickly moving between measurement locations, the average air flow measurement can provide a more accurate measure of the air flow in the duct. Capturing an average can be particularly helpful when measuring ducts with registers or dimensionally uneven air flow.

Air Flow Diagram

Evaporation Rate

(Kestrel 5200 Professional Environmental Meter) Kestrel Professional Meters can calculate a concrete evaporation rate (ACI 308) by combining a user input concrete temperature with measured air temperature, wind speed and relative humidity. Concrete mix temperature is generally measured with a probe or infrared thermometer and should be read at the time of making the evaporation rate measurement After inputting the mix temperature, hold the unit vertically, approximately 20 inches above the surface of the concrete while facing the rear of the unit directly into the wind. To avoid inaccurate Evaporation Rate readings due to thermal loading it is best to shade the Kestrel. (Be sure the source of shade is not obstructing the wind speed measurement.) The ACI recommends taking a 6-10 second average of the evaporation rate to account for fluctuating wind speeds. To measure an average Evaporation Rate, scroll right from the Evaporation Current Measurement Screen to the Min/Ave/Max Screen and press select to manually start and stop a capture.

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Yes. You can always trade-in an older Kestrel, regardless of its condition, by using our Customer Trade-In Program.

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  1. Start with a known; either current barometric pressure or current altitude. (NK recommends identifying your current altitude since it is constant.)
  2. Enter this reference altitude on the barometric pressure screen.
    • For K1000-K3500 you would enter this by pressing both outside buttons.
  3. Take note of the updated barometric pressure that is shown.
  4. Use this updated barometric pressure as your reference pressure on the altitude screen.
  5. Now your barometric pressure and altitude are set for your current location/conditions. Important note: If you change altitude the barometric pressure will become inaccurate. If a weather system moves in, the altitude will become inaccurate.

For more info check out our YouTube video on Setting Reference Pressure and Reference Altitude on the Kestrel 4000 series!

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  1. Private Label Order Creates Job Opportunity at NK

    September was quite a busy month at NK. In fact, we received a large order from one of our Japan-based customers, Weathernews, for 10,000 weather meters. This new order created nine temporary manufacturing positions on our production floor. Weathernews is a Japan-based company founded in 1986. The company’s mission is to serve developing nations where many lives are lost each year in natural weather disasters. Reaching over 6.7 billion peop
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