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6

 

First steps

 

10 

 

Establishing a Bluetooth

®

 connection to the 

testo Smart App 

 

 

To establish a connection via Bluetooth

®

, you need a 

tablet or smartphone with the Testo Smart App already 
installed on it. 

You can get the App for iOS instruments in the App Store 
or for Android instruments in the Play Store. 

Compatibility: 

Requires iOS 13.0 or later/Android 8.0 or later,  
requires Bluetooth

®

 4.2. 

 



Bluetooth

®

 is enabled in the measuring instrument. 

 

Open the testo Smart App. 

 

The app automatically searches for Bluetooth

®

 devices in the vicinity. 

 

In the 

Sensors

 menu, check whether the required instrument is 

connected. 

 

If necessary, switch the instrument to be connected off and on again 
to restart the connection module. 

 

When the testo Smart App is connected to the measuring instrument, 
the   icon appears on the measuring instrument display. 

The measuring instrument automatically synchronizes its date and 
time settings with the testo Smart App. 

Once connected successfully, the current measured value from the 
measuring instrument appears on the app screen in the Live view. 

 

Summary of Contents for 0560 0425

Page 1: ...testo 425 Digital hot wire anemometer 0560 0425 Instruction manual ...

Page 2: ...to the testo Smart App 10 Using the product 11 Controls on the measuring instrument 11 Implementing settings 12 Opening configuration mode 13 Setting the unit 13 Setting the area 14 Reading absolute pressure 14 Carrying out a reset of the setting menus 14 Carrying out a reset of the measuring instrument 14 Measuring 15 Changing the measurement channel display 15 Freezing a reading displaying the m...

Page 3: ...ettings 22 Configuring the measuring instrument menu 24 Setting Auto Off 25 Activating damping 25 Setting the Correction Factor 26 Setting the area 26 Display of the readings 27 Adjusting the view 27 Exporting readings 28 Excel CSV Export 29 PDF Export 29 Maintaining the product 30 Inserting changing batteries 30 Cleaning the instrument 30 Technical data for testo 425 31 Tips and assistance 32 Que...

Page 4: ...n the technical data Do not apply any force Do not operate the instrument if there are signs of damage to the housing or connected cables Dangers may also arise from objects to be measured or the measuring environment Always comply with the locally valid safety regulations when carrying out measurements Do not store the product together with solvents Do not use any desiccants Only perform maintena...

Page 5: ...information denoted by the following warnings Implement the precautionary measures specified DANGER Risk of death WARNING Indicates possible serious injury CAUTION Indicates possible minor injury CAUTION Indicates possible damage to equipment Disposal Dispose of faulty rechargeable batteries and spent batteries in accordance with the valid legal specifications At the end of its useful life deliver...

Page 6: ...rument if this is expressly described in the documentation for the purposes of maintenance or servicing Intended use The testo 425 is a compact instrument for measuring flow velocities and temperatures by means of a permanently connected flow temperature probe hot wire probe The product is designed for the following tasks areas Volume flow measurements in ducts Measuring flow velocities in rooms T...

Page 7: ...cription Instrument overview 1 Control keys 2 Display 3 Probe 4 Battery compartment Explanation of icons Refer to instruction manual CAUTION Damage to sensor possible Do not touch sensor Close the protective sleeve after the measurement ...

Page 8: ...Insert or replace batteries 3 x AA batteries Observe the polarity 3 Close the battery compartment When not in use for a long period Take out the rechargeable batteries Symbol explanation Do not allow children under 6 years of age to play with batteries Do not throw batteries in the trash Do not charge batteries Do not place batteries near fire Batteries are recyclable ...

Page 9: ...witching on 1 Press and hold down 2 sec the On Off key Measurement view is opened The current reading is displayed or lights up if no reading is available Switching off 1 Press and hold down 2 sec the On Off key The display turns off Switching the display illumination on and off The measuring instrument is switched on 1 Press and hold down 2 sec the MENU ENTER key The display illumination is switc...

Page 10: ...connection for the first time press and hold approx 2 sec the key While the instrument is trying to establish a Bluetooth connection the icon flashes on the display Bluetooth remains enabled until it is disabled manually by pressing and holding approx 2 sec the key The measuring instrument saves the Bluetooth setting and depending on the configuration starts up with Bluetooth enabled or disabled ...

Page 11: ...rument 1 Open the testo Smart App The app automatically searches for Bluetooth devices in the vicinity 2 In the Sensors menu check whether the required instrument is connected If necessary switch the instrument to be connected off and on again to restart the connection module When the testo Smart App is connected to the measuring instrument the icon appears on the measuring instrument display The ...

Page 12: ...trols are implemented either on the instrument or via the app If the measuring instrument is connected to the testo Smart App settings can only be made via the app The measuring instrument then remains in the measurement view and other menus e g Settings cannot be opened 1 On Off MODE END key 2 Bluetooth key 3 Battery indicator 4 Parameter 1 unit 5 Parameter 1 measured value display 6 Parameter 2 ...

Page 13: ...ime 2 sec Adjustable functions Ensure correct settings all settings are transferred immediately There is no Cancel function Function Setting options comments Bluetooth long press Switch the Bluetooth connection on or off Arrow left Freeze reading HOLD function display maximum minimum value In configuration mode Decrease value select option On Off long press Switches the instrument on or off MODE E...

Page 14: ...mode The instrument is switched on and is in the measurement view 1 Press MENU ENTER until the display changes The instrument is now in configuration mode Press MENU ENTER to switch to the next function You can leave configuration mode at any time To do this press MODE END until the instrument has changed to the measurement view Any changes that have already been made in configuration mode will be...

Page 15: ...ment not on the probe head no additional input of the air density is required Configuration mode is open 1 Press to scroll through the configuration menus until P_ABS absolute pressure is displayed The current ambient air pressure is displayed Carrying out a reset of the setting menus Configuration mode is open M RES menu reset is displayed 1 Press to select the required option and confirm with ME...

Page 16: ... probe slightly in both directions until the maximum value is displayed 2 Read the measured values on the display Changing the measurement channel display 1 Switch between the display of temperature C F and calculated volume flow m3 h l s cfm Press Freezing a reading displaying the maximum minimum value The current reading can be frozen The maximum and minimum values since the last time the instru...

Page 17: ... the current reading Carrying out multi point mean calculation 1 Press MODE END flashes The number of readings recorded is displayed in the upper line while the current reading is displayed in the lower line 2 To record readings in the desired quantity Press MENU ENTER several times 3 To end measurement and calculate the mean value Press MODE END and flash The number of measured values and the cal...

Page 18: ...te the mean value Press MODE END and flash The measurement period and the calculated continuous mean value are displayed 5 To switch back to the measuring view Press MODE END Printing data A testo Bluetooth IRDA printer order no 0554 0621 is connected via Bluetooth and switched on When first setting up a connection between the testo measuring instrument and the testo Bluetooth IRDA printer the ini...

Page 19: ...t view and settings menus cannot be opened on the measuring instrument Overview of operating controls 1 Choice of applications 2 Switch between the views live graphic table 3 Display of connected measuring instruments including readings 4 Start stop 5 Measurement configuration the menu changes depending on the measuring instrument connected and the application selected 6 Configuration of the measu...

Page 20: ...ent data report Searching Favourite Deleting Further information Display report Multiple selection The Main menu can be accessed via the icon at top left To exit the main menu select a menu or right click on the guided menus The last screen displayed is shown Measure Customer Memory Sensors Settings Help and Information Other applications ...

Page 21: ... you can find the version number of the installed App 1 Click on 2 Select Help and Information 3 Select Instrument information The version number of the app and the ID are displayed Displaying the tutorial The tutorial guides you through the first steps in operating the testo Smart App 1 Click on 2 Select Help and Information The tutorial is displayed In the tutorial swipe to display the next page...

Page 22: ...n Your selected application is displayed Setting favourites 1 Click on A selection of menus for various applications is displayed 2 Select the application you want to set as a favourite 3 Click on The star is displayed in orange Displaying information about an application 1 Click on A selection of applications is displayed 2 Click on The information about an application is displayed ...

Page 23: ...Sensors The Sensors menu opens 3 Click on the required measuring instrument Information about the model order number serial number and firmware version is displayed 4 Click on the Settings tab A window with settings for the respective measuring instrument opens In addition to the settings that can be performed on the measuring instrument additional settings can also be made ...

Page 24: ...open an input window to enter a specific value or select a unit For details on the settings options see the following sub sections Changes to the measuring instrument settings in the app are transferred directly to the measuring instrument Synchronization with the app is confirmed on the measuring instrument via SYNC DONE ...

Page 25: ...easuring instrument itself The Settings tab in the Sensors menu is open 1 Activate Customization instrument menu and click on the blue text Change instrument menu list under the settings heading The Customization instrument menu dialogue opens On the measuring instrument the following menus can be displayed or hidden o Setting the unit o Area o Funnel factor testo 417 only ...

Page 26: ... the menu reset M RES and then all settings menus will be displayed on the measuring instrument again Setting Auto Off The Settings tab is open 1 Enable Activate Auto off using the slider The measuring instrument switches off automatically if no key is pressed for 10 min Exception a frozen reading is shown on the display Hold is displayed Activating damping If the readings fluctuate wildly it is a...

Page 27: ... is covered the correction factor must be set to 0 8 80 free space The correction factor can only be set via the testo Smart App and not directly on the measuring instrument The Settings tab is open 1 Enable Correction factor using the slider 2 Enter the value for the correction factor and confirm with OK The changes are transferred to the measuring instrument and synchronization with the app is c...

Page 28: ...Up to four different readings can be displayed in graph format Readings to be displayed can be selected by tapping on a reading above the diagram Table view In the table view all readings are displayed in sequence according to date and time Different readings from the individual measuring probes can be displayed by pressing Adjusting the view 1 Click on 2 Select Edit view An overview of all measur...

Page 29: ...8 Controls via testo Smart App 28 Exporting readings Export Report Delete 1 Click on 2 Select Memory 3 Click on Select measurement ...

Page 30: ...Create PDF with all readings button 3 Click on Create For measurements please be aware that the option Create PDF with all readings is only possible up to 30 pages due to the resulting file size and number of pages In the testo DataControl software however PDF reports can be created for all measurements without any restrictions A report containing all the information is created A selection window ...

Page 31: ...nap lock 2 Insert or replace batteries 3 x AA batteries Observe the polarity 3 Close the battery compartment When not in use for a long period Take out the rechargeable batteries Cleaning the instrument 1 If the housing of the instrument is dirty clean it with a damp cloth Do not use any aggressive cleaning agents or solvents Mild household cleaning agents and soap suds may be used ...

Page 32: ...e telescope after use and do not constrict with the cable Start with the telescopic links closest to the handle Feature Value Measurement parameters m s fpm C F m h cfm l s Accuracy 0 03 m s 4 of measuring value 0 to 20 m s 0 5 m s 5 of measuring value 20 01 to 30 m s 0 5 C Resolution 0 01 m s 0 1 C Measuring range 0 to 30 m s 20 to 70 C Operating temperature 20 to 50 C instrument 20 to 70 C probe...

Page 33: ...ient temperature is very low Increase ambient temperature Display Sensor error Please contact your dealer or Testo Customer Service Display OOOO Permissible measuring range has been exceeded Keep within the permissible measuring range Display UUUU Permissible measuring range has been undershot Keep within the permissible measuring range Display BT Fail Bluetooth connection could not be established...

Page 34: ...eys are locked for 3 s Restart the measuring instrument and testo Smart App and check the Bluetooth connection If we have not been able to answer your question please contact your local dealer or Testo Customer Service See the back of this document or the www testo com service contact web page for contact details Accessories and spare parts Description Order no Bluetooth IRDA printer 0554 0621 For...

Page 35: ...Testo SE Co KGaA Celsiusstr 2 79822 Titisee Neustadt Germany Phone 49 0 7653 681 0 E mail info testo de www testo com 0970 9425 en 01 10 2022 ...

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