TESTO 420 Instruction Manual
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TESTO 420 Instruction Manual

Flow hood
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Summary of Contents for TESTO 420

  • Page 1 420 · Flow Hood Instruction manual...

  • Page 3: Table Of Contents

    Technical data ................. 7 Product description ............... 10 5.1. Overview ..................10 5.1.1. Measurement setup ............10 5.1.2. Overview of testo 420 ............11 First steps ..................13 Using the product ................15 7.1. Switching Bluetooth® on and off ..........15 7.2.
  • Page 4 1 Contents Maintaining the product ..............23 8.1. Cleaning the instrument ..............23 Tips and assistance ............... 23 9.1. Questions and answers ..............23 9.2. Accessories and spare parts ............24 Authorizations ................26...

  • Page 5: Safety And The Environment

    2 Safety and the environment Safety and the environment 2.1. About this document > Please read this documentation through carefully and familiarize yourself with the product before putting it to use. Pay particular attention to the safety instructions and warning advice in order to prevent injuries and damage to the products.

  • Page 6: Ensure Safety

    Pitot tube measurements and pressure measurements for air conditioning and ventilation systems. Thanks to its interchangeable flow hoods, the testo 420 can be used for air inlets and outlets of various sizes. With the additional App (Android/iOS), the readings can be conveniently displayed on a tablet or smartphone, and in addition a measurement can be started, stopped and saved via the App.

  • Page 7: Technical Data

    4 Technical data Technical data The use of the wireless module is subject to the regulations and stipulations of the respective country of use, and the module may only be used in countries for which a country certification has been granted.
  • Page 8 4 Technical data Feature Values Resolution Temperature: 0.1 °C / 0.1°F Humidity: 0.1% RH Flow velocity: 0.01 m/s Volume flow: 1 m³/h / 1 cfm Pressure (absolute pressure): 0.1 hPa / 0.1 mbar / 0.01 kPa Pressure (differential pressure): 0.001 Pa / 0.00001 hPa / 0.00001 mbar / 0.0001 mm H2O / 0.000001 inH2O Accuracy...
  • Page 9 4 Technical data Feature Values Temperature Humidity: ± 0.03% RH / K (deviating from coefficient 22°C, in the range 0 to 60 °C) Volume flow: ± 0.02% of m.v. / K (deviating from 22 °C, in the range 0 to 60 °C) Pressure (absolute pressure): ±...

  • Page 10: Product Description

    EU guideline: 2014/30/EU standards and tests Product description 5.1. Overview 5.1.1. Measurement setup 1 Volume flow hood (standard hood 610x610 mm) 2 Actuator for manual measurement 3 Measuring instrument testo 420 4 Measurement base with differential pressure cross 5 Integrated flow straightener...

  • Page 11: Overview Of Testo 420

    5 Product description 5.1.2. Overview of testo 420 1 Battery compartment, on rear of the instrument 2 Display 3 Control keys 4 Probe socket Mini-DIN (only for use on the measurement base) 5 Micro-USB port 6 Connection for pressure measurement...
  • Page 12 The Pitot tube factor for Pitot tubes is Pitot Tube factor generally the same and must be entered: (P-factor) • Pitot tubes from Testo: 1.00 • Pitot tubes from other manufacturers: the Pitot tube factor can be found in the instruction manual or you should ask your supplier.

  • Page 13: First Steps

    6 First steps First steps Inserting batteries/rechargeable batteries 1. Open the battery compartment. 2. Insert the batteries or rechargeable batteries (scope of delivery includes 4x 1.5V Type AA/ LR6). 3. Close the battery compartment. When not in use for a long period of time, take the batteries/rechargeable batteries out.
  • Page 14 6 First steps 1. Menu Level 2. Menu Level 3. Menu Level Measuring Program Single Measurment Continous Measurement Continous/Punctual measuring duration measurement (nur für Staurohr) Memory New Folder T420 folder Display Volume Flow on/off Diff.Pressure on/off Temperature on/off Velocity on/off Humidity on/off Abs.Pressure...

  • Page 15: Using The Product

    Switching Bluetooth® on and off In order to be able to establish a connection via Bluetooth, you need a tablet or smartphone with the Testo App testo 420 already installed on it. You can get the App for iOS instruments in the App Store or for Android instruments in the Play Store.

  • Page 16: Settings For The Measurement

    7 Using the product Display Explanation There is no Bluetooth connection, or a flashes potential connection is being searched for. There is a Bluetooth connection. is permanently displayed Bluetooth is disabled. is not displayed 7.2. Settings for the measurement 7.2.1. Damping (Gliding Average) If the readings fluctuate widely, it is advisable to damp the readings.

  • Page 17: Volume Flow Measurement Setup

    7 Using the product 7.3. Volume flow measurement setup Standard hood (610x610 mm, scope of delivery; 360x360 mm, accessories) 1. Pull the lower end of the hood over the measurement base. 2. Attach the hood at two corners using the snap fasteners. 3.
  • Page 18 7 Using the product Large hood (1220x610 mm, 1220x305 mm and 915x915 mm, accessories) 1. Install the aluminium frame and stretch the fabric hood over the framework, so that the elastic band lies in the recess of the frame. Make sure that the elastic band fits correctly, especially at the corners.
  • Page 19 7 Using the product Attaching the measuring instrument 1. Push the testo 420 completely into the instrument holder, pay attention to the catch on the right-hand and left-hand side in the bracket.

  • Page 20: Measuring

    7.4.2. Pitot tube measurement 1. Remove the testo 420 from the measurement base. 2. Connect the hoses to the testo 420 and to the Pitot tube. 3. Press -> Application ->...

  • Page 21: Differential Pressure Measurement

    Pitot tube factor or ask your supplier. 7.4.3. Differential pressure measurement 1. Remove the testo 420 from the measurement base. 2. Connect the hoses to the testo 420 at + and -. 3. Press -> Application ->...

  • Page 22: Transferring Measurement Data To The Pc

    7 Using the product Delete folder 1. Using the arrow keys, navigate to the required folder and press 2. Select the menu item Delete Folder and confirm with The folder that you want to delete is shown on the display. 3.

  • Page 23: Maintaining The Product

    FAT format is always selected under the file system. 1. Connect the testo 420 to your PC using the USB cable. The testo 420 switches on automatically, a window appears on the PC, select Open folder here.

  • Page 24: Accessories And Spare Parts

    Bluetooth mode. Bluetooth connection. 9.2. Accessories and spare parts Description Article no. testo 420 differential pressure measuring 0560 0420 instrument (stand-alone device) Flow hood 360x360 mm with bag 0554 4200 Flow hood 305x1220 mm with bag 0554 4201 Flow hood 610x1220 mm with bag...
  • Page 25 If you have any questions, please contact your dealer or Testo Customer Service. The contact details can be found on the back of this document or on the Internet at www.testo.com/service-...

  • Page 26: Authorizations

    10 Authorizations Authorizations Please note the following country-specific information for the product authorization. Testo 420 Product 0560 0420 Mat.-No. Country Comments Australia E1561 RCM mark Supplier identification Authorized Zealand Turkey Authorized Canada Product IC ID: 12231A-05600420 IC Warnings China CMIIT ID: 2015DP4400...
  • Page 27 10 Authorizations Europa + EFTA The EU Declaration of Conformity can be found on the testo homepage www.testo.com under the product specific downloads. EU countries: Belgium (BE), Bulgaria (BG), Denmark (DK), Germany (DE), Estonia (EE), Finland (FI), France (FR), Greece (GR), Ireland (IE), Italy (IT), Latvia (LV), Lithuania (LT),...
  • Page 28 10 Authorizations Bluetooth Feature Values SIG List Bluetooth® Range 15 m (free field) (varies with the used mobile device) LSD Science & Technology Co., Ltd Bluetooth® type L Series BLE Module (08 Mai 2013) based on TI CC254X chip Qualified B016552 Design ID Bluetooth®...
  • Page 29 10 Authorizations Caution Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Shielded interface cable must be used in order to comply with the emission limits. Warning This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received,...
  • Page 32 Testo SE & Co. KGaA Testo-Straße 1 79853 Lenzkirch Germany Tel.: +49 7653 681-0 Fax: +49 7653 681-7699 E-Mail: info@testo.de www.testo.de 0970 4200 en 05...

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