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Jenoptik VARIOSCAN high resolution Series Manual

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VARIOSCAN high resolution
Models 3021, 3021 - ST
and 3022
Manual
JENOPTIK Group.

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Summary of Contents for Jenoptik VARIOSCAN high resolution Series

  • Page 1 VARIOSCAN high resolution Models 3021, 3021 - ST and 3022 Manual JENOPTIK Group.
  • Page 2 No part of this manual may be reproduced in any way (printed, copied, photocopied, microfilmed), or processed and duplicated by any electronic system or disclosed to third parties without the prior written consent of JENOPTIK Laser, Optik, Systeme GmbH. The manual has been written with due care.
  • Page 3 The manufacturer will not accept any liability for damages caused by nonobservance of the information given in this manual.

  • Page 4: Table Of Contents

    Contents Introduction ..................5 Notes on Instrument Safety ..............6 Technical Description................. 8 Instrument features ................8 Specifications ...................11 Unpacking and checking the equipment ..........15 Handling the camera .................16 Installation..................17 Connection to an external PC ............20 Operation..................21 Recording mode ................21 Temperature measurement ...............50 General ....................50 Measurement principle ..............51...

  • Page 5: Introduction

    Contents Introduction The VARIOSCAN high resolution Thermography System is avaiable in different versions: q Model 3021 nitrogen cooled, wavelength range 8 - 12 µm germanium optics. q Model 3021 - ST Stirling cooler, wavelength range 8 - 12 µm germanium optics. q Model 3022 thermoelectrically cooled, wavelength range 2 - 5 µm,...

  • Page 6: Notes On Instrument Safety

    The use of accessories or spares on the VARIOSCAN high resolution that have not been recommended expressly by JENOPTIK Laser, Optik, Systeme GmbH may result in malfunction or damages. The manufacturer will not assume any liability for such damage.
  • Page 7 Notes on Instrument Safety Caution! When exiting the control software, the system will save certain settings. Never switch off the camera while this process is going on. Only use ATA-compatible memory cards on the PCMCIA drive of the VARIOSCAN high resolution. Nonobservance may cause damages to camera or memory card, for which we will not accept any liability.

  • Page 8: Technical Description

    Technical Description Technical Description Instrument features LCD display Window Vertical scanner Filter wheel Horizontal scanner Aspheric Chopper lens PC/104 Module Detector Fig. 1: Schematic diagram of camera head VARIOSCAN high resolution is a thermographic system for the wavelength ranges of 2 – 5 µm (Model 3022) and 8 – 12 µm (Model 3021).
  • Page 9 Technical Description The vertical scanner builds up the complete image from the individual lines. 240 lines can be captured at an image refresh rate of 1.0 Hz. VARIOSCAN high resolution can also be operated with the following resolutions (pixel x lines): 360 x 200 360 x 100 360 x 50.
  • Page 10 Technical Description...

  • Page 11: Specifications

    Technical Description Specifications Camera 3021 3021 - ST 3022 IR detector Detector cooling Liquid nitrogen Stirling cooler thermoelectrical Operating 8 – 12 µm 8 – 12 µm 2 – 5 µm wavelength range Temperature resolution ± 0.003 (30°C object temp.) Temperature –...
  • Page 12 Technical Description...
  • Page 13 Technical Description Camera 3021 3021 - ST 3022 Operating – 10°C ... +40°C temperature range Dimensions 240 x 192 x 200 (L x W x H) [mm³] Weight 5.1 kg 5.0 kg 4.7 kg Display TFT display (active) 4.0" Computer PC 104 module hardware 386 SX 20 MHz,...
  • Page 14 Technical Description Total weight of approx. 11 kg system in carrying case...

  • Page 15: Unpacking And Checking The Equipment

    Unpacking and checking the equipment Unpacking and checking the equipment The VARIOSCAN high resolution system is supplied in a carrying case. The case contains the following components that are part of the standard equipment: 1. Camera head 2. Nitrogen fill-in funnel (on Model 3021 only) 3.

  • Page 16: Handling The Camera

    Handling the camera Handling the camera The VARIOSCAN high resolution is a high-quality optical measuring instrument. Handle it with due care and take care that its optical components do not get dirty. The instrument’s Enclosure Protection satisfies the requirements of IP40.

  • Page 17: Installation

    Installation Installation As the VARIOSCAN high resolution is a slow-scan system, you should fix it for use to a tripod, carrying harness, transport carriage, or similar support. For this, the bottom plate is provided with a 1/4“-20 mounting thread (for setting a 3/8“-16 mounting thread remove the adapter). Power supply You can power the system either through power supply unit or rechargeable battery.
  • Page 18 Installation How to fill the Dewar flask with liquid nitrogen. q Unscrew the sealing cap on top of the camera head. q Use the provided funnel and an auxiliary vessel to fill the Dewar flask slowly with nitrogen. Note: q First fill in only a little amount of nitrogen to avoid boiling over. Fill the flask completely only, after it has cooled down sufficiently.
  • Page 19 Installation After these operations, the thermographic image of the selected object becomes visible on the display. For this, the system uses factory-set default parameters. (See also description of VARIOSCAN control software.) Test and check list The instructions for the first use of the VARIOSCAN high resolution thermographic system are based on basic settings that are necessary to obtain a first thermographic image.

  • Page 20: Connection To An External Pc

    Connection to an external PC Connection to an external PC VARIOSCAN high resolution contains an interface to a PC that can be connected by an Ethernet-cable and a PC network card/PCMCIA network card to a PC or notebook. The Ethernet-connection allows complete remote control of VARIOSCAN high resolution and on-line image capturing.

  • Page 21: Operation

    Operation Operation Recording mode After you have switched on the camera, the system automatically starts an internal initialisation routine. During initialisation the hardware is set to defined default states. At the end of initialisation, the recording mode is active. • Focusing ‚...
  • Page 22 Operation When you release single steps at a keying frequency > 1 Hz, the result of focusing becomes visible on the display only after the first keying break of at least 1 second. By double clicking the focus key, a window appears for direct entry of object distance.
  • Page 23 Operation Zoom FOV [°H x °V] Step 30 x 20 21 x 14 15 10 8 x 5 5 x 4 freely selectable The following diagram shows the scanned object field as a function of object distance for zoom step 0. Fig.
  • Page 24 Operation To switch off the activated magnifier again, double-click any of the zoom keys.
  • Page 25 Operation Brightness control (Level) With these keys (∧ , ∨ ∧ , ∨ ) you can customise the displayed temperature window to the respective object. For this, observe the following points. Internally the VARIOSCAN employs 16-bit digitalisation. This ensures that the selected temperature measuring range determined by the currently set aperture (see below) is always fully available.
  • Page 26 Operation Double clicking the upper key allows numeric entry of the Range. For Range selection, 3 pages are available. The desired Range is selected by means of the ↑ / ↓ keys or the page selector keys ↑↑ / ↓↓ and confirmed by ENTER.
  • Page 27 Operation Palette selection The following palettes for image presentation are available: – 256 colours – 32 colours – 16 colours – 256 grey tones b/w – 256 grey tones w/b – „Iron“ – „Blue/Red“ The palettes are switch selectable. A double click on this key switches image presentation to 360 x 240 pixel full-screen mode.
  • Page 28 Operation Autofunctions The following Autofunctions are available: – Focus – Brightness (Level), 1x Single Autolevel by a double click on the control menu – Brightness, permanent Autolevel, permanent – Brightness/contrast, 1x Single Autoimage by a double click on the control menu –...
  • Page 29 Operation Start time for automatic saving Interval between two saving operations – Max/Min display Display of maximum and/or minimum in the total image or in a local spot. Max/Min display: Total image Max/Min display: Local spot – Environmental temperature Sets the chopper temperature measured when exiting the menu as environmental temperature of the measured object.
  • Page 30 Operation Gallery of background images The gallery function provides a thumbnail display of the thermograms stored to the current storage medium (normally 9, after averaging: 10). The thumbnail image of the current background image is indicated by a white frame. Selection of background images is via the << / >> keys. The ±...
  • Page 31 Operation Calibration range After selecting this option, the following window appears: Select the measuring range by moving the cursor to the desired option using the arrow keys. Subsequently, press Depending on the VARIOSCAN high resolution model, the following measuring ranges are available: Aperture 3021 (°C) -40...100 40...400 100...800 200...1200...
  • Page 32 Operation Atmospheric temperature (Type 3022 only) The temperature of the atmosphere between camera and measured object. In temperature calculation, the radiation fraction of atmosphere is taken into account. This fraction affects measured object temperature only if the object distance is large and the absorption factor of atmosphere has been set to a value other than zero.
  • Page 33 Operation Increases/reduces the dimension of the square spot (maximal spot size: 99 x 99 pixel). If you activate the spot display without having defined a spot, a spot of 10 x 10 pixel will appear in the centre of the image.
  • Page 34 Operation Setup menu (SET) This menu provides the following setting options: The various Setup options are explained in the following sections.
  • Page 35 Operation SID/PCX file name This menu provides options for creating file names of images. File name consists of current date and a consecutive 3-digit number (ymmddxxx.PCX) File name consists of a name (max. 5 characters) and a consecutive 3-digit number User defined file name (max.
  • Page 36 Operation Storage target This window provides options for the order of save operations on either memory card or internal flash memory. Saves the image to the medium mentioned first. If save storage is impossible (no card inserted, card full, internal memory full), the image will be saved alternatively to the second medium.
  • Page 37 Operation Select the configuration to be deleted from the list. The STANDARD configuration and the currently active configuration will not appear on this list. If there are no further configurations stored, no list will appear and the Delete module directly finished. Temperature supervision This menu allows you to select the upper and lower limits of the...
  • Page 38 Operation Difference image This function allows you to determine temperature variations in comparison to an original image. It is useful, if you want to keep track of dynamic processes or if the object scenery has changed. The original image is saved to the camera memory using the „Record“ option. Activating the „Display“...
  • Page 39 Operation Please note that if the internal temperature of the camera changes quickly (e.g. after switch on) , referencing at short intervals is necessary to avoid drift of the measured temperature values. In this case, the chopper pause should be as short as possible. External Trigger In remote control mode of the camera, the following modes are selectable:...
  • Page 40 Operation Image presentation optimised for internal LCD monitor Image presentation optimised for connected external PAL monitor Image presentation optimised for external NTSC monitor Image presentation optimised for external VGA monitor Optics In this window, you can adapt the camera parameters to the used optics.
  • Page 41 Image field size, chopper frequency, focus adjustment, zoom step, Autofunctions (window with display of active Autofunctions) Page 3: User calibration, charging state of JENOPTIK battery (no battery in camera: ”not defined”), date, time, internal camera temperature Page 4: Free memory, image FIFO (number of...
  • Page 42 Time This window allows the entry of the current time. Battery In this window, select the battery used. When selecting an internal or external JENOPTIK battery, the status window will display its power in percent for the corresponding battery characteristics.
  • Page 43 Operation Without user calibration With user calibration This option allows systematic measurement errors to be corrected by the entry of a user-defined offset value (e.g. adjustment to an alternative measuring technique). If the display of spot temperature has been activated, its value will directly be changed. To reset the user offset, press the Del key.
  • Page 44 Operation transfer software VSLINK must be configured with the same baud rate index.The required cable and the PC software are available as an option. File Management System The file management system serves for handling files saved to memory cards and internal memory. Here, the key assignment is as follows: Mark, unmark Copy...
  • Page 45 Operation Memory Card Internal Flash A click on either of these keys initiates display of the number of saved SID files and the free memory left. To delete the memory display window, click the key once more. Copy key A click on this key starts the copy process. If you start this function from the memory card, the target ”COM”...
  • Page 46 Operation Isotherm In the isotherm editor, you can edit existing isotherms only, if they are inside the current temperature visualisation range (In the example above: 20°C ... 40°C). Otherwise, the isotherms are displayed by their index number in the No-key. In this case, only the delete option is accessible.
  • Page 47 Operation Deletes the selected isotherm. Entry of the upper isotherm limit On deleting an isotherm, the remaining isotherms are renumbered in ascending order. If the deleted isotherm was the only one available, the index number ”0” appears in the No key after deletion. This indicates that no isotherm is available.
  • Page 48 Operation Image Accumulation Σ Σ To improve the signal-to-noise ratio, you can accumulate over several background images. For this purpose, mark the images to be included in the accumulation process using the key. A single click of the key marks the current image, a double click marks all background images.
  • Page 49 Operation Exiting the camera control program Double-clicking the ESC key in Recording Mode exits the Control Program. This will bring up the following window: This menu allows you to select if you want to exit the software with or without saving the currently active configuration or to reeset the system with or without saving the currently active configuration.

  • Page 50: Temperature Measurement

    Temperature measurement Temperature measurement General VARIOSCAN high resolution is a measuring slow-scan thermographic system scanning the object field in a raster using a single element detector. The detector signal is amplified, digitised with 16 bits, and visualised with an 8 bit resolution (256 colours). Every colour of the displayed thermogram represents a defined temperature.

  • Page 51: Measurement Principle

    Temperature measurement and apparent object temperature (the temperature that an object of emissivity ε = 1 would have without atmospheric absorption). 3. Finally, a generally applicable radiation-physical term takes into account the measuring conditions at the real object (object emission, extraneous radiation, atmospheric transmission). Steps 2 and 3 must be accomplished during the run time of the system with every change and output of temperature-relevant parameters (range, level, object emissivity and distance, air and ambient...
  • Page 52 Temperature measurement By varying the offset value, the user can adjust the temperature display of the camera to the actual temperature value. As this offset acts on the radiant power on which temperature calculation is based, unknown fractions of extraneous radiation are easily compensated. environment air path object...
  • Page 53 Temperature measurement interpolation from the deviation of the calibration points from the ideal Planck black body radiator curve. This method guarantees that the temperature scale of the camera exactly coincides with all calibration points and that the interpolated values follow the Planck black body radiator curve in the first approximation.

  • Page 54: Maintenance

    Maintenance Maintenance Maintenance works other than those described in this manual may only be carried out by authorised staff. If you carry out maintenance works not specified below or you deviate from the prescribed procedures, the functional safety of the instrument may be endangered.
  • Page 55 Maintenance...

  • Page 56: Service

    In the case of malfunction or necessary technical maintenance of the equipment, contact your local agent or send your requests directly to our Customer Service Department: JENOPTIK Laser, Optik, Systeme GmbH Business Unit Camera systems Service Goeschwitzer Str. 25...

  • Page 57: Declaration Of Ec Conformity

    EN 50 082 2 (Noise immunity) EN 55 011 (Noise suppression) Jena, June 04,1996 JENOPTIK Laser, Optik, Systeme GmbH Dr. Erich Hacker Ingolf Berger Executive Vice President Quality Management...

This manual is also suitable for:

Varioscan high resolution 3021Varioscan high resolution 3021-stVarioscan high resolution 3022

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