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MAINTENANCE & SERVICE ADDENDUM

Replacing the Battery
•  When your display becomes dim or disappears, 

you need to change the battery.

•  Use a US nickel or similar coin to twist open the 

battery compartment.

•  Replace battery with a new, clean CR2032 coin-cell 

battery, with positive side (+) facing up.

•  CR2032 batteries are available in most stores that 

sell batteries.

When replacing the battery door, be sure to keep the black 
rubber o-ring  seated in the groove on the case back.

M A I N T E N A N C E   &   S E R V I C E

Summary of Contents for 3550FW

Page 1: ...www kestrelinstruments com Kestrel 3550FW Fire Weather Meter User Guide ...

Page 2: ......

Page 3: ...d Instructions 11 Using The App 13 Setup Options 16 Barometric Pressure Altitude Adjustment 17 Measurement Notes 19 Maintenance Service Addendum 20 Sensor Drift Calibration 21 Wind Vane Mode 22 C O N T E N T S For instruction manuals for all Kestrel products FAQs technical support instructional videos and more please visit www kestrelinstruments com help ...

Page 4: ... the Kestrel 3550 On Press the center button to turn your Kestrel on Pressing and holding the center button will turn it off Toconservebattery theKestrelwillpoweroff45minutesafterthelastbuttonpress unlesstheKestrelisconnectedtotheKestrelKDEXapp ...

Page 5: ...ESTREL KDEX APP BLUETOOTH CONNECTIVITY Download the Kestrel KDEX app MakesuretochooseKestrelKDEXapp NOTtheKestrelLiNK Ballisticsapp KestrelKDEXappistheonlyappcompatible withtheKestrel3550unit K D E X A P P ...

Page 6: ...ill display CAL plus flashing degree and compass symbols on start up indicating the Kestrel is in calibration mode Hold the Kestrel vertical Press the center button to begin calibration Carefully spin the Kestrel at about 8 seconds per rotation while the screen counts down from 30 to 0 Troubleshooting Tip Ifthecalibrationfailsandreturnstothe CAL screen simplypressthecenterbuttonandrepeatthecalibra...

Page 7: ...gree symbols on start up indicating the Kestrel is in calibration mode When calibrated the display will change to show the compass direction screen The3550displaywillalwaysshowthe magneticheading To initiate a new calibration remove the battery for 3 seconds and then replace it or use the Compass Calibration feature available in the app C O M P A S S C A L I B R A T I O N ...

Page 8: ...el KDEX App can be changed to display TRUE or MAGNETIC heading The Kestrel KDEX app can be used to initiate compass calibration via the device settings view COMPASS CALIBRATION C O M P A S S C A L I B R A T I O N ...

Page 9: ... connecting to your device the Realtime measurements screen will display the current readings from the Kestrel Readings are updated at the frequency of the Sync Rate shown in the upper right corner of the Realtime screen Use the buttons on the bottom navigation bar to explore other app features Troubleshooting MakesureBluetooth is turnedoninyourmobiledevice Donottryto connecttheKestrelusingtheBlue...

Page 10: ...r corresponding screen icon and Hint abbreviation Measurement Icon Hint Units of Measure 3550FW Wind Speed SPd mph kt B m s ft min km h Temperature dEG F C Wind Direction dir Wind Chill chil F C Relative Humidity r h Heat Stress Index H I F C Dewpoint Temp d P F C Barometric Pressure bAro inHg hPA mb Altitude Alt m ft Wet Bulb Temp bulb F C Pressure Trend Backlit Display Clock ...

Page 11: ...is intended for measuring wind direction The Kestrel must be held vertically with the back of the unit facing into the wind i e towards the direction to be measured 75 2 F F Temperature Hint flashes before Temperature Measurement Screen IN THE FIELD Eachmeasurementscreenwillflashabrief Hint toclarifywhich measurementisbeingdisplayed Themeasurementand unitsofmeasurewill bedisplayedinthe lowerlineof...

Page 12: ...unable to view the display Double press the center button to enter hold mode The word HOLD will blink on each screen and all values will stop measuring and freeze in memory Use or to view each measurement screen in Hold mode Double press the center button a second time to exit Hold mode 71 9 HOLD Hold Screen ...

Page 13: ... the Kestrel device or by the App Snapshots can be easily exported from the app as csv files To take a snapshot from the App Click the capture button on the Realtime screen Press View to review the snapshot measurements You can also conveniently add notes location information and photos to the snapshot record SnapshotsinitiatedbytheAppwillnotcause theKestrel3550toenterHOLDmode snapshotdetails ...

Page 14: ... sure that the app is on the Realtime screen Double press the center button on the 3550 Within 3 seconds the App will display a SNAPSHOT confirmation pop up and the 3550 will enter Hold mode Thesnapshotfunctionhasadelay upto3seconds between pressingthebuttonandrecordingthedatawhenitis initiatedintheapp TakingthesnapshotfromtheKestrelwill giveamoreinstantaneousmeasurement U S I N G T H E A P P ...

Page 15: ...ss the center button a second time to exit Hold mode IfanewsnapshotistriggeredfromtheKestrelunitwhile theappisstilldisplayingthe SNAPSHOTDETAILS froman earliercapture thedatafromthepreviouscapturewillbe automaticallysaved Holdmodedoesnotinterruptdataloggingintheapp TheKestrel3550unitmustbeconnectedtotheappand showingtheRealtimescreenwhen Hold modeisinitiated otherwisethe Hold datawillbelostwhenyou...

Page 16: ... used to toggle the clock between 12 and 24 hour display modes Eachtimea3550isconnectedtotheapp the3550clockisupdatedtomatchthe timeonthemobiledevice Wind Max Avg Function To view the maximum wind gust recorded press or until you see MAX appear at bottom of screen Press again to view average wind gust AVG will appear at bottom of screen Both Max and Average are reset each time the unit is powered ...

Page 17: ...ion Use or to highlight the BARO screen Press and simultaneously until the word REF starts blinking on screen Use or to adjust the value to the correct known Altitude Press and simultaneously to exit the reference setting mode AftertheAltitudereferenceisset placethe unitonatableandallowittostabilize The accurateBarometricPressurereadingwill thenbedisplayedonscreen Note the correct barometric press...

Page 18: ...theunitonatableandallowitto stabilize TheaccurateAltitudereadingwill thenbedisplayedonscreen Note the correct altitude reading above and use this to set the Barometric Pressure Use or to highlight the BARO screen Press and simultaneously until the word REF starts blinking on screen Use or to adjust the reference value to the correct known Altitude Press and simultaneously again to exit the setting...

Page 19: ...to impeller in water or snow to get an accurate reading Kestrel Meters are completely waterproof and can be safely submerged in water according to IP 67 standards up to 1 meter for a maximum of 30 minutes Backlight Press to activate the backlight for 10 seconds Press again to manually deactivate the backlight before 10 seconds expire Compass Accuracy The accuracy of the compass can be affected by ...

Page 20: ...ickel or similar coin to twist open the battery compartment Replace battery with a new clean CR2032 coin cell battery with positive side facing up CR2032 batteries are available in most stores that sell batteries Whenreplacingthebatterydoor besuretokeeptheblack rubbero ring seatedinthegrooveonthecaseback M A I N T E N A N C E S E R V I C E ...

Page 21: ...age points up or down over 24 months For high precision applications we recommend recalibration at 24 month intervals If you require calibration please contact NK or a certified calibration lab for options and pricing The humidity sensor may also be recalibrated in the field using a Kestrel Humidity Calibration Kit NK PN 0802 Instructions for running the recalibration routine are provided with the...

Page 22: ... time wind speed and wind direction weather station viewable on the Kestrel KDEX app 1 Connect your Kestrel to the Kestrel KDEX app 2 Place your Kestrel in the Kestrel Basic Series Vane Mount PN 0781 on a tripod in an open location exposed to the winds The Bluetooth range of the Kestrel is about 100 feet reduced by trees or obstructions W I N D V A N E M O D E ...

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Page 24: ...47 1555 www KestrelInstruments com info NKhome com CONTACT US AT 800 784 4221 Toll Free North America Email support KestrelInstruments com Facebook com KestrelMeters Twitter KestrelWeather Instagram KestrelWeather Youtube Channel Kestrel Weather Meters Manufactured and Distributed by ...

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