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SpectraTrend HT User’s Guide 3.2

DISPLAY: SPECTRAL DIFFERENCE

Displays the difference between the standard and the most recent sample read in raw
reflectance values for each wavelength read by the instrument.

Figure 25. Spectral Difference View

DISPLAY: SPECTRAL PLOT

Displays the raw reflectance values for each wavelength read by the instrument to be
plotted for the most recent standard or sample.

Figure 26. Spectral Plot View

DISPLAY

: DIFF PLOT

Displays the difference between the standard and the most recent sample read to be
plotted in raw reflectance values for each wavelength read by the instrument.

Figure 27. Difference Plot View

Содержание SpectraTrend HT

Страница 1: ...SpectraTrend HT User s Manual Hunter Associates Laboratory 11491 Sunset Hills Road Reston Virginia 20190 USA www hunterlab com A60 1014 954 Manual Version 3 2 Firmware Version 1 01 19 043A Above...

Страница 2: ...Trend are registered trademarks of Hunter Associates Laboratory Inc Safety Notes For your safety when using the SpectraTrend HT you should pay particular attention to the following types of statements...

Страница 3: ...TION 17 Mounting the SpectraTrend Sensor 17 Presentation of the product to the sensor 17 Access to the sensor 17 Sensor environment 17 Clearance for plant maintenance 17 Connecting the SpectraTrend Se...

Страница 4: ...d Corrections 58 CMC Parameters 59 Belt Distance Height Color Tracking 60 OPERATION 65 Standardization Using the Front Panel Display 65 Taking Readings 68 Reading Individual Samples 68 Reading With Av...

Страница 5: ...stics 88 Input Output I O 88 Conditions of Illumination and Viewing 88 Illumination 88 Viewing 88 INSTRUMENT REPLACEMENT REPAIR PROBLEMS AND QUESTIONS 89 Warranty 89 Shipping Claims 89 Breakage or Dam...

Страница 6: ...SpectraTrend HT User s Guide 3 2 6...

Страница 7: ...ariation and out of spec product without contact or intrusion Product Applications and Key Features SpectraTrend HT takes real time color measurements of products of virtually any size and in industri...

Страница 8: ...tection Built in red Laser height sensor Enables individual measurements using built in height detection Also provides automatic detection when product flow rises above or falls below the user set lev...

Страница 9: ...romagnetic spectrum The light is directed toward the product and a relay lens gathers the reflected light and transmits it to the spectrophotometer Each light source is switched on with modulation at...

Страница 10: ...e standards held at the National Physical Laboratory England and the National Institute of Standards and Technology N I S T U S A Figure 1 Slide on Calibrator Figure 2 Calibrated Values for the Slide...

Страница 11: ...ard personal computer running Windows The software allows the user to enter instructions to the sensor using the keyboard and mouse The computer monitor then displays all results prompts and diagnosti...

Страница 12: ...1005 721 To connect to the computer 4 Channel Analog Output Kit L02 1014 757 Individually isolated 4 20mA analog outputs for connection to PLC devices Glass Sensor Window Kit D02 1014 745 Replacement...

Страница 13: ...ty software Models and configurations may vary refer to the computer documentation for more information The Table 3 lists the minimum configuration your computer must meet in order to run the utility...

Страница 14: ...CD ROM drive 16x CD ROM drive Video Adapter SVGA SVGA or higher Monitor 19 color 19 color or larger Communication Ports Ethernet Ethernet Pointing Device Serial bus or USB mouse Serial bus or USB mou...

Страница 15: ...ime Figure 5 SpectraTrend HT Sensor Figure 6 Button Keypad for the SpectraTrend HT Menus and Prompts All SpectraTrend HT functions may be accessed through its MAIN MENU The main menu commands lead to...

Страница 16: ...ument may be viewed on the ABOUT YOUR INSTRUMENT screen which can be obtained by choosing About from the main menu The LCD Screen displays the model serial number firmware version and total flash coun...

Страница 17: ...l be necessary to have physical access to the sensor for standardization and maintenance at regular intervals so convenient access should be available Sensor environment While the sensor is rugged and...

Страница 18: ...ronments This equipment has an ON OFF switch with a terminated power cable not longer than 3 meters It is left to the customer s knowledge and discretion to properly connect the 3 meter cable to plant...

Страница 19: ...ibrator when required for standardization by sliding it onto the track below the sensor window The calibrator is attached from the right side of the sensor Follow the onscreen prompts to standardize t...

Страница 20: ...ouse Routine operation requires observation of displays on the monitor use of the keyboard and mouse and access to the disk drives for routine file backups Thus the location and height of the computer...

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Страница 29: ...ng the button pad and the LCD front panel display on the SpectraTrend HT Sensor Head or the EasyMatch OL ST software Product setups can be created and modified only when the system is in Product Setup...

Страница 30: ...If YES is chosen the SELECT SETUP TO CONFIGURE screen is shown Move the cursor highlight to the position of the setup you wish to configure using the UP and DOWN ARROW buttons or by scrolling through...

Страница 31: ...he RIGHT ARROW button to obtain the PRODUCT NAME screen on which you may enter any descriptive name for the product setup Up to 15 characters may be entered using all the letters and numbers as well a...

Страница 32: ...HYSICAL To select your standard press the RIGHT ARROW key Choose AD HOC when you wish to use the first measurement value as the standard This setting is useful if the standard values are unknown or yo...

Страница 33: ...an actual product specimen is available and represents your target color Use the target color values of the product specimen to compare to the color values of your samples A physical standard is meas...

Страница 34: ...red The VIEWS setting allows you to specify the type of data to display on the SpectraTrend HT s LCD screen after taking a measurement Figure 21 Product Setup Views Press the RIGHT ARROW button to obt...

Страница 35: ...nd b for the most recent standard or sample read DISPLAY DIFFERENCE Displays the most recent sample read in comparison to the standard and the difference in color between them such as dL da db Figure...

Страница 36: ...5 Spectral Difference View DISPLAY SPECTRAL PLOT Displays the raw reflectance values for each wavelength read by the instrument to be plotted for the most recent standard or sample Figure 26 Spectral...

Страница 37: ...under which color values will be calculated Use the DOWN ARROW button to move down to the ILL OBS parameter then scroll through your choices using the RIGHT ARROW button Figure 29 Illuminant Observer...

Страница 38: ...o the MEASUREMENT VALUES chapter for a description of each color scale COLOR INDEX Choose the COLOR INDEX you wish to see Use the DOWN ARROW button to move down to the COLOR INDEX parameter then scrol...

Страница 39: ...W button NEXT to move to the next digit in the value and then to move from the COMMERCIAL FACTOR to the l c ratio and then to the SHADE BLOCKS Press the LEFT ARROW button DONE when the needed values h...

Страница 40: ...in the selected color scale in the product setup When complete press the LEFT ARROW button DONE to return to the PRODUCT SETUP screen Figure 35 Entering Standard Values For a NUMERIC standard change...

Страница 41: ...may be selected COLOR TRACKING if enabled ALARM LIMITS and ALERT LIMITS COLOR TOLERANCES COLOR TRACKING Choose whether COLOR TRACKING is enabled by setting the tolerances When all tolerance values are...

Страница 42: ...is a color value or color difference value beyond which values are considered out of tolerance In tolerance values are reported in black The alarm state is indicated by the color values returning to t...

Страница 43: ...t state is indicated by the color values being reported in black with a yellow background on the measurement screen To disable this feature set all tolerance values to zero Change the highlighted digi...

Страница 44: ...g NOTE This feature only applies to READ mode In RUN mode this feature is disabled Figure 41 Automatic Standard Search Press the LEFT ARROW button BACK to accept the parameters just set and select ano...

Страница 45: ...apanese Spanish and Chinese Figure 43 Display Settings GLOBAL OPTIONS DISPLAY SETTINGS Choose the DISPLAY SETTINGS by pressing the RIGHT ARROW SCREEN ANGLE from 0 or 180 degrees for readings pointing...

Страница 46: ...ITS can be entered using the RIGHT and LEFT ARROW to select and the UP DOWN ARROWS to change the limits Item 1 through 3 will output the three values of the color scale as defined by your product setu...

Страница 47: ...ange the product setup This parameter is helpful in maintaining a consistency of readings by protecting the system from product setup change Figure 46 Setups Locked GLOBAL OPTIONS STDZ INTERVAL To aut...

Страница 48: ...ensor will calculate the height to use for color compensation When the distance is set to a number a single fixed measurement is used for color compensation The height units for the fixed measurements...

Страница 49: ...is no longer sensed and then transmits average data in units selected for all the readings taken on the piece The maximum speed at which the sensor can measure in piece mode is 1 per second This mode...

Страница 50: ...LEFT ARROW key DECREASE The minimum interval is zero maximum measurement output approximately 1 reading per second and the maximum interval is 60 seconds RUN CONFIGURATION BELT DISTANCE BELT DISTANCE...

Страница 51: ...of the light reflected to the sensor height is not measured absolutely and all heights are relative Instead perform the MIN HEIGHT determination procedure using the DISTANCE SENSOR in the DIAGNOSTIC...

Страница 52: ...d all heights are relative Instead perform the MAX HEIGHT determination procedure using the DISTANCE SENSOR in the DIAGNOSTIC MENU and enter the value obtained as this parameter in the setup The value...

Страница 53: ...he FILTER FUNCTION allows you to smooth the output data without extending the update period The output data may be smoothed by using the TIME READ mode and a large number such as 60 seconds for the re...

Страница 54: ...illustrates the number of readings required to reach a new value when the product changes For example a filter value of 10 takes two to three readings to settle out completely whereas a filter value...

Страница 55: ...elected until manually changed and the System Setup is downloaded Figure 61 Software Setup Preferences Next from the RUN MENU select PRODUCT SETUP from the dropdown list Product Setup The SAVED PRODUC...

Страница 56: ...olor Scale PRODUCT SETUP TAB PAGE1 OPTIONAL INDEX An optional Index may be selected from the list to display on the front panel along with the color measurement values Figure 63 Product Setup Index PR...

Страница 57: ...tinuously measures in the units selected and transmits average data for the selected time interval Note that gaps are ignored by the sensor TIME UNITS are appropriate for products measured in piles or...

Страница 58: ...ou would like to use when displaying color measurement values on the front panel of the sensor Figure 65 Selection of Illuminant Product Standard Tolerances and Corrections PRODUCT SETUP TAB PAGE 2 PR...

Страница 59: ...e product setup for as long as desired Figure 66 Select the Product Standard Type Page 2 PRODUCT SETUP TAB PAGE 2 OFFSET CORRECTION OFFSET CORRECTION values may be entered for the color scale selected...

Страница 60: ...ned as a distance measured from the Belt Distance in the height units selected Any product or background located beyond the MIN HEIGHT distance will not be included in measurement However since the Sp...

Страница 61: ...he output data without extending the update period The output data may be smoothed by using the TIME AVERAGE read mode and a large number such as 60 seconds However this method could constrain the sys...

Страница 62: ...sor will not flash and no readings are taken When the HEIGHT TRIGGER is set to NONE the sensor will flash regardless of the Min Max Height settings HEIGHT TRIGGERING is most useful in PIECE MODE as th...

Страница 63: ...feature is disabled When COLOR TRACKING is enabled the product will be registered as present if the measured color is within the preset tolerance of the target color In this case the number of valid c...

Страница 64: ...ne the distance to the product and compensate for changing product heights In situations where it is difficult for the height sensor to operate correctly low Laser reflectance you may choose to disabl...

Страница 65: ...ard used for standardization be treated carefully It must be clean and in good condition if standardization is to be successful If there is any doubt about the standard being clean clean it as describ...

Страница 66: ...s and sets the instrument zero When it is finished the screen prompts you to place the white tile Figure 75 Reading the White Tile Replace the black glass by sliding the white tile into position which...

Страница 67: ...shed the screen indicates that the instrument has been successfully standardized Figure 77 Results of a Successful Standardization Press MAIN MENU RIGHT ARROW to return to the MAIN MENU If any of the...

Страница 68: ...Note Distance calibration is performed at the factory and does not need regular checking Taking Readings When the color or height of the product being read changes drastically HunterLab recommends al...

Страница 69: ...p that was used press NO DOWN ARROW If you want to select the setup for use from the list of setups press YES UP ARROW and the select setup to use screen appears Figure 80 Selecting a Setup Scroll thr...

Страница 70: ...he viewing window of the sensor Make sure the item is within the working range that is set in the product setup Figure 83 Initiate Sample Reading Press the GO button to read The standard or sample is...

Страница 71: ...using the UP and DOWN ARROW buttons and then press the GO button The first Reading screen appears asking if you want to select the setup to use If you want to read using the last product setup that wa...

Страница 72: ...range that is set in the product setup Press the GO button to READ The standard or sample is read and its values as configured in the product setup displayed on the screen Figure 87 Displaying Values...

Страница 73: ...deviation is displayed you may press MAIN MENU RIGHT ARROW to return to the MAIN MENU Run Mode Operation Complete the following steps to take and average multiple readings using the SpectraTrend HT N...

Страница 74: ...ugh the Product Setup list until the desired setup is highlighted Figure 92 Select New Product Setup Select the PRODUCT SETUP to use and then press the GO button to return to the MAIN MENU Figure 93 S...

Страница 75: ...any index that was selected in the Product Setup In the top left hand corner of the display is the current sample number reading and the number of valid measurements for that reading The top right co...

Страница 76: ...SpectraTrend HT User s Guide 3 2 76...

Страница 77: ...using the UP and DOWN ARROW keys and then press the RIGHT ARROW button The various functions perform as described below Figure 96 Diagnostics White Tile Repeatability Select the WHITE REPEATABILITY by...

Страница 78: ...eft at the port for a series of 20 readings Figure 99 Initiation of Repeatability Test Readings are taken in X Y Z and the dE is reported at the end and compared to a dE tolerance of 0 05 Figure 100 P...

Страница 79: ...press the GO button to continue If the values in the instrument s memory require revision change the selected color scale value using the UP and DOWN ARROW buttons When the desired digit is shown pre...

Страница 80: ...and to SEND the results select the DOWN ARROW Signal Levels To examine the spectral signal levels for a sample select the SIGNAL LEVELS by pressing the RIGHT ARROW Place the sample of interest at the...

Страница 81: ...bottom of the sensor is displayed along with the calculated distance in millimeters Figure 106 Sensor Count To continue measuring press the GO button To return to the DIAGNOSTICS MENU press the LEFT...

Страница 82: ...ile s assigned reflectance is updated or the instrument is serviced You should keep a record of the checksum s value If it changes for unexplained reasons then the instrument may not function correctl...

Страница 83: ...ck and wipe the sensor viewing window clean with mild cleaning solution and then a dry soft cloth Weekly Clean the exterior of the sensor and mounting Standardize the sensor Monthly Clean the standard...

Страница 84: ...for scratches and dust Significant scratches that result in a hazy appearance to the finish may cause standardization to be in error If the black tile is scratched call the HunterLab Order Processing...

Страница 85: ...0 5A SB 5 X 20 MM 250V Flip up the plastic fuse holder and open the cover panel Figure 109 Replacing the Fuse Using a fuse removal tool lift the faulty fuse out of its fuse holder and discard it Snap...

Страница 86: ...SpectraTrend HT User s Guide 3 2 86...

Страница 87: ...bient temperature limit of 122 F 50 C Ideally the SpectraTrend HT sensor should be mounted at a position near the oven exit where the temperature never exceeds 122 Mounting over a hot conveyor is not...

Страница 88: ...Output I O Analog Four isolated 4 20 mA outputs Tristimulus color values 3 and the selected index Digital Ethernet RJ 45 Color out of Tolerance 3 outputs 60mA max Conditions of Illumination and Viewi...

Страница 89: ...s not cover consumable items such as lamps fuses batteries etc Questions concerning operation maintenance or repair of your equipment can be directed to the Service Department at Service hunterlab com...

Страница 90: ...n the container and packaging Notify HunterLab at once for replacement Shortage Perform the following procedure if your order appears to be missing items Check the packing list notations The apparent...

Страница 91: ...Technical Support for maintenance or repair instructions Many times this on the spot diagnosis is all that is required If repair is required HunterLab offers two means of servicing Instrument may be r...

Страница 92: ...SpectraTrend HT User s Guide 3 2 92...

Страница 93: ...D55 96 D65 96 D75 96 Damaged instruments 89 dE Total Color Difference 102 dEc 103 Difference Color Scales 98 Difference Indices 101 Display 35 Absolute 35 Color Plot 37 Diff Plot 36 Difference 35 Spe...

Страница 94: ...st 81 Sensor Installation 17 Sensor environment 17 Set Up Id 57 Shade Number 107 Shade Sort 39 41 Shipping claims 89 Shortage 90 Signal Levels 80 SMA 103 SpectraTrend HT Installation Drawings 20 SSN 1...

Страница 95: ...tandard Observer Tristimulus integrations based on any of the illuminants listed on the next page may be performed For a complete description of how to calculate tristimulus values refer to the public...

Страница 96: ...ated color temperature of approximately 5000K Illuminant D55 represents daylight with a correlated color temperature of approximately 5500K Illuminant D65 represents daylight with a correlated color t...

Страница 97: ...ulus values for any illuminant CIE L C h is a modification to the CIEL a b scale and plots in polar coordinates rather than rectangular ones 16 Y Y 116 L 3 n C ab 2 2 b a h arctan b a Reference Commis...

Страница 98: ...ween the sample and the standard via the Hunter L a b scale dL Lsample Lstandard If dL is positive the sample is lighter than the standard If dL is negative the sample is darker than the standard da a...

Страница 99: ...d standard observer used These values are provided in the table given in ASTM E313 This index is only displayed when the data view is configured for either the C or the D65 illuminant as these are the...

Страница 100: ...degradation by light chemical exposure and processing Yellowness indices are used chiefly to measure these types of degradation Yellowness Index per ASTM Method E313 displayed as YIE is calculated as...

Страница 101: ...CIE n Difference Indices available when Display Type is Difference Reading of Both Standard and Sample Required D457B This index yields the difference between the sample and the standard via the 457...

Страница 102: ...or Difference The Hunter L a b total color difference for any illuminant and observer is calculated as follows 2 2 2 db da dL dE dE approximates the NBS Unit of Color Difference Judd Hunter which repr...

Страница 103: ...e illuminant being used S observer functions dEcand CMC Autotolerancing The equation for dEc describes an ellipsoidal volume with axes in the direction of lightness chroma and hue centered about a sta...

Страница 104: ...TCC Test Method 173 1992 published in the AATCC Technical Manual Gray Change Gray Change indicates the amount of fading or color alteration that occurs with environmental exposure or washing of textil...

Страница 105: ...art A02 Grey Scale for Assessing Change in Colour or AATCC Evaluation Procedure 1 Gray Scale for Color Change and is generally used in color fastness testing It may be used in assessing any samples ex...

Страница 106: ...r very similar to that of Gray Change Again five standard pairs are used One half of each standard is white and the second half range ranges from white no staining to a gray with the chroma value of t...

Страница 107: ...an be obtained using your ColorFlex EZ provides a convenient way of sorting samples into groups or blocks of similar color This is helpful in situations where several separate pieces will be combined...

Страница 108: ...nter standard block extends 0 2 units 1 unit divided by 5 in each direction The size of this block and in fact each block is 0 4 units high 0 4 units wide and 0 4 units deep 0 2 units times 2 directio...

Страница 109: ...de 3 2 109 Baking Contrast Units Baking Contrast Units BCU is a custom color index used in the food industry BCU are derived from the Y value in the XYZ color scale Negative values which occur when Y...

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