TESTO 6448 Instruction Manual
  1. Manuals
  2. Brands
  3. TESTO Manuals
  4. Measuring Instruments
  5. 6448
  6. Instruction manual
TESTO 6448 Instruction Manual

TESTO 6448 Instruction Manual

Compressed air counter probe
Hide thumbs Also See for 6448:
Table of Contents

Advertisement

Quick Links

Download this manual
Compressed air counter probe
Instruction manual

Advertisement

Table of Contents
loading

Related Manuals for TESTO 6448

Summary of Contents for TESTO 6448

  • Page 1 Compressed air counter probe Instruction manual...

  • Page 3: Table Of Contents

    1 Contents Contents Contents ....................3 Safety and the environment..............4 2.1. About this document ................4 2.2. Safety ....................5 2.3. Protecting the environment..............6 Specifications ..................7 3.1. Use ....................7 3.2. Technical data .................8 3.2.1. Dimensions (mm).....................8 3.2.2. Thermal mass flow sensor ................9 3.2.3. Accessories ....................11 Product description................12 4.1.

  • Page 4: Safety And The Environment

    2 Safety and the environment Safety and the environment 2.1. About this document Symbols and writing standards The following characters and symbols are used in this instruction manual to emphasise text passages that need special attention. Symbol Explanation Notes This arrow points out specifics that must be observed during operation.

  • Page 5: Safety

    2 Safety and the environment 2.2. Safety The compressed air counter was built and checked reliably accord- ing to state-of-the-art technology and left the factory in an appropri- ately safe condition. As the user, you are responsible for the compliance with all valid safety regulations, including: •...

  • Page 6: Protecting The Environment

    Pos: 20.2 /TD/Sicherheit und Umwelt/Umwelt schützen/Produkt entsorgen @ 0\mod_1173780307072_79.doc @ 357 @ @ 1 • At the end of its useful life, send the product to the separate col- lection for electric and electronic devices (observe local regula- tions) or return the product to Testo for disposal.

  • Page 7: Specifications

    3 Specifications Specifications 3.1. The compressed air counter is intended exclusively for use in pipe systems for working compressed air, provided that the calibration certificate does not explicitly allow use with other gases. Thanks to the design, operation in systems that are under pressure up to PN16 is possible.

  • Page 8: Technical Data

    3 Specifications 3.2. Technical data 3.2.1. Dimensions (mm)

  • Page 9: Thermal Mass Flow Sensor

    3 Specifications 3.2.2. Thermal mass flow sensor The thermal mass flow sensor for the compressed air volume flow measurement is independent of the process pressure and the me- dia temperature. Feature Values Sensor Thermal, glass-coated ceramic sensor Media Compressed air (CO also possible with special calibration) Accuracy...
  • Page 10 -25 to +85 °C temperature EN 6126-1:2006 class B/EN 6126-1:2006 table 2 IEC 1000/4/2 ESD 4/8 kV IEC 1000/4/3 HF 10 V/m radiated IEC 1000/4/4 burst 2 kV IEC 1000/4/6 10 V HF grid-bound Warranty 2 years, for warranty conditions see www.testo.com/warranty...

  • Page 11: Accessories

    3 Specifications 3.2.3. Accessories • Sensor parameterisation for CO and N : Six measuring points are paramaterised with specified nominal widths, standard tem- peratures and pressures for nitrogen or carbon dioxide, then moved to the test stand where the standard volume is tested. •...

  • Page 12: Product Description

    4 Product description Product description 4.1. Overview 1 Electronic sensor 2 Tapping clamp (optional) 3 Measurement fitting with quick-release coupling (optional,  Accessories, page 11) 4 PBCOver reverse running protection unit...
  • Page 13 4 Product description PBCOver reverse running protection unit The PBCOver combines three functions in one instrument: • Reverse running protection, meaning the sensor can only be moved in one direction during assembly. • Process seal, meaning compressed air cannot escape during assembly thanks to an enclosed O-ring.
  • Page 14 4 Product description Electronic sensor The sensor records the standard volume flow rate of the working compressed air according to the calorimetric measurement princi- ple. The measurement value of the standard volume flow rate is calculated based on DIN ISO 2533 (1013 hPa, 15 °C and 0 % rela- tive humidity).
  • Page 15 4 Product description • The °C display (LED 5) indicates the gas temperature in °C. Switch output 1 • Switch signal as the limit value for volume flow, hysteresis or window function as NO or NC contact. • Pulse sequence for adjustable consumption quantity, e.g. 1 pulse/m³...

  • Page 16: Initial Operation

    5 Initial operation Initial operation 5.1. Mechanical assembly 5.1.1. Preparation Determining the installation point The installation point should be easily accessible and experience only low vibrations. The ambient temperature must not exceed the values specified in the technical data (pay attention to possible heat radiation).
  • Page 17 5 Initial operation Changes to the pipe diameter B = 15x pipe diameter 90° manifold B = 15x pipe diameter Two 90° manifolds, one level B = 20x pipe diameter Two 90° manifolds, two levels B = 25x pipe diameter Valve, slider B = 45x pipe diameter Assembly of the tapping clamp...

  • Page 18: Assembly Of The Clamp

    5 Initial operation On-site preparations The installation point must be freely accessible and there must be enough space to work around the pipes. A stable stepladder is required for all assembly work carried out up to 3.5 metres off the floor (height of the pipe). A working platform must be provided for work at greater heights.
  • Page 19 5 Initial operation Installation The pipe must be completely free of any dirt, rust or grease at the assembly point of the clamp. Cleaning with soapy water is best for this, as it also improves the functionality of the clamp. Seals, nuts and bolts must not be greased! Remove the caps on the threaded bolts and unscrew the nuts up to the end of the threaded bolt (do not remove them).
  • Page 20 5 Initial operation Using the wrench, rotate further until the retaining bracket slips over the screw yoke and clicks into place. Tighten the nuts uniformly using a wrench (min. 300 mm long) until the Delrin® washers curve slightly around the nuts. The shape of the Delrin®...

  • Page 21: Assembly Under Pressure

    5 Initial operation 5.1.3. Assembly under pressure Assembly of the tapping clamp under pressure should only be made by trained personnel. A pressure test is made to check the clamp for leaks after the clamp has been installed and before drilling. This is made using a pressurised cylinder that has been filled from the compressed air supply.
  • Page 22 5 Initial operation 4. Align to the pipeline and note the flow direction (see arrow). Alignment is not made on PBCOver units with alignment protec- tion. 5. After adjusting the sensor, tighten the adjustment screw clock- wise by hand. If the sensor is inserted too deep (points 1 to 3 only), or has to be removed for cleaning, inspection or recalibration: 1.
  • Page 23 5 Initial operation Inch DN Wall thickness Outer diameter Immersion depth [mm] [mm] [mm] 1 ½" 40 2.60 48.30 2" 2.90 60.30 2 ½" 65 2.90 76.10 3" 3.20 88.90 4" 3.60 114.30 5" 4.00 139.70 6" 4.50 168.30 8" 6.30 219.10 10"...

  • Page 24: Installation Position Of The Sensor

    5 Initial operation 5.1.5. Installation position of the sensor Do not install the sensor in the crossed-out installation positions shown in the following graphic. In the event of a limited flow, the specified accuracy cannot be maintained. Schematic diagram (the arrow shows the direction of flow for the medium): Vertical installation posi- Horizontal installa-...
  • Page 25 5 Initial operation Vertical installation posi- Horizontal installa- Horizontal installation posi- tion, direction of flow tion position, tion, direction of flow hori- horizontally to the right, direction of flow zontally to the rear, sensor sensor upwards vertically upwards, to the right (heated sensor sensor to the rear element downwards, prob- lems possible at low flow...

  • Page 26: Electrical Connection

    5 Initial operation 5.2. Electrical connection The instrument may only be installed by a qualified electrician. Fol- low the national and international regulations regarding the installa- tion of electro-technical systems. The voltage supply is to be laid out in accordance with EN50178, SELV, PELV. To meet the "lim- ited voltage"...
  • Page 27 5 Initial operation 2 x pulse output Both of the available OUT1and OUT2 outputs are each used as a PNP signal output (pulse). Pin assignment on the instrument Five-wire pin assignment (accessory) If the optional connecting cable for electrical isolation is used (...

  • Page 28: Operation

    6 Operation Operation Thermal mass flow sensor Familiarise yourself with the operation and programming of the sensor. The sensor is calibrated ex factory and provided with de- fault settings for each nominal width. Do not inadvertently change these. 6.1. Operation and display elements The following illustration shows the control and display unit of the sensor from above.

  • Page 29: Types Of Operation

    6 Operation Display of the parameters and parameter values MODE / ENTER Selection of the parameters and confirma- programming tion of the parameter values button [Mode/Enter] SET program- Setting the parameter values ming button [Set] Changing the display unit in run mode In general, the following applies as the display value: LED 1 (l/min) x 1000 (LED 6 = 10³...

  • Page 30: Programming

    6 Operation • The corresponding parameter value is displayed for approxi- mately 15 seconds by pressing [Set] briefly. After a further 15 seconds, the instrument returns to run mode. Programming mode Setting the parameter values The instrument is switched to programming mode if a parameter is selected and the [Set] button is pressed for longer than 5 seconds...

  • Page 31: Adjustable Parameters

    6 Operation Changing further parameters: Start again with step 1. Ending programming: Wait for 15 seconds or press [Mode/Enter] until the current measurement value appears again. Set the display unit (Uni) before you set the values for the SPx, rPx, parameters.
  • Page 32 6 Operation ImPS Output 1 as pulse output ImPS is only active when = ImP. ImPR Configuring quantity monitoring through pulse output Select ImPR and set to YES. Pulse repetition is active. Output 1 emits a counting pulse each time the value set in ImPS is reached.
  • Page 33 6 Operation Analogue end point Measurement value at which 20 mA is output. Minimum distance between = 25 % of the final measuring range value. is only active when = I. Extended functions This menu point contains a submenu with further parame- ters.
  • Page 34 6 Operation rES.T = manual reset: The counter is manually cleared and a new counting in- terval begins: Press [Set] until rES.T appears. Now press [Mode/Enter] briefly. A manual reset can also be carried out when a time pe- riod for an automatic reset has been set. Setting the display 7 settings can be selected: = update of measurement value every 50 ms...
  • Page 35 6 Operation SEL2 Standard measurement parameter for evaluation using output 2: • Limit value signal or analogue signal for flow • Limit value signal or analogue signal for temperature rEF.P Standard pressure; measurement and display values for flow correspond to this value. Select rEF.P and set the desired standard pressure: Ad-...

  • Page 36: Setting The Preset Counter / Pulse Value (Imps)

    6 Operation 6.1.4. Setting the preset counter / pulse value (ImPS) The instrument has seven adjustment ranges: LED Display Value Resoluti-  0.001 to 9999 Nm³ 0.001 Nm³  10.00 to 99.99 Nm³ 0.01 Nm³  100.0 to 999.9 Nm³ 0.1 Nm³...
  • Page 37 6 Operation Press and hold [Set]. The flashing digit is increased. 0 is displayed after 9 and the next digit to the left is active. [Set] held down [Set] still held down If digit 1 is changed in this way, then the display changes to the next highest adjustment range.
  • Page 38 6 Operation Continue: Change digit 4 or wait for 3 seconds and set digit 1. After 3 seconds [Set] is pressed down continuously, the display runs through all ranges and goes back to the start value when it reaches the end. Release [Set] briefly and start the setting again.
  • Page 39 6 Operation Window function The window function allows a defined OK range to be monitored. If the flow fluctuates between switch point (SPx) and return switch point (rPx), the output is switched through (window function/NO contact) or opened (window function/NC contact). The size of the window is adjustable by the distance between and rPx.
  • Page 40 6 Operation The analogue end point (AEP) varies according to the selected parameters (inner diameter, standard tempera- ture, standard pressure and scale factor). The output signal is between 4 and 20 mA in the set measuring range. Further signals are: •...

  • Page 41: Menu Overview

    6 Operation 6.1.5. Menu overview...

  • Page 42: Cleaning The Sensor

    7 Cleaning the sensor Cleaning the sensor You must clean the sensor: • Before each calibration/inspection • Regularly during operation You can remove the sensor and clean it manually. • Only clean the sensor with approved cleaning agents. • Do not use any abrasive cleaning agents. These can lead to irreparable damages to the sensor.

  • Page 43: Troubleshooting

    8 Troubleshooting Troubleshooting 8.1. Replacing damaged parts Damages to the compressed air counter that affect the pressure integrity may only be remedied by authorised personnel. After each repair, the technical data of the specifications must be checked by authorised personal, e.g. pressure test.
  • Page 44 0970 6448 en 01...

Table of Contents