Lovibond PFX950 + heater Скачать руководство пользователя страница 1 | Manualshive

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ISSUE NO. V1.3 DATE 12/12/00

Lovibond
PFX995/950
Series

OPERATORS INSTRUCTION MANUAL

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Содержание PFX950 + heater

Страница 1: ...ISSUE NO V1 3 DATE 12 12 00 Lovibond PFX995 950 Series OPERATORS INSTRUCTION MANUAL ...

Страница 2: ...e and time Event and measurement log options User and sample ID options Menu access 5 Measuring a sample 12 Sample preparation Performing a baseline measurement ZERO Taking a measurement 6 Recording results 13 Printing results Connecting to a computer 7 Regular Maintenance 13 Instrument cleaning Care of glass cells Checking measurements 8 Warning Messages 14 9 Maintenance 14 Fault finding and diag...

Страница 3: ...election of operating parameters Thereafter measurements are initiated by just a single key press and take less than 25 seconds to complete They are rugged colorimeters with fabricated steel housing which are designed to function equally as a QC instrument within the laboratory or on 24 hour operation in a process control environment The Lovibond PFX995 950 operates as a stand alone colorimeter co...

Страница 4: ... the AF960 an early electronic colorimeter Use not recommended 0 20 Red 0 70 Yellow AF960 AOCS Similar to AOCS Tintometer Colour but modified for use on the AF960 Use not recommended 0 20 Red 0 70 Yellow CIE Values X Y Z tristimulus values Defined by spectrum x y Y chromaticity co ordinates locus L c h colour space CIE L a b colour space Hunter L a b colour space E colour difference Spectral data ...

Страница 5: ...ternal Fuse rating Technical assistance Operating 5 C 40 C Storage 20 C 85 C Operating 0 90 Storage 0 85 Fabricated sheet steel with tough textured paint finish Width 515 mm depth 195 mm height 170 mm 7 75 kg 24 Volts 3 15 Amps 3 Getting started Unpacking The Lovibond PFX995 950 weighs 7 75 kg One person may easily lift it by placing their hands at either end of the instrument and lifting Carefull...

Страница 6: ...ay and up to four options along the bottom line The required option is selected by pressing directly below it Depending on the parameter the user may be presented with further messages and options 4 Setting the operating parameters Language for display Press Menu Select menu item Scale Options Interfaces Select Interfaces Select menu item Date Time Language Diagnostics Printer Select Language Sele...

Страница 7: ...scales where samples must be in a cell of set path length see above table if the path length is not as specified then the following display is shown Path length incorrect for scale Continue Set Select Set to change the path length to that specified for the scale chosen Or select Continue to use the current path length setting After selecting the colour scale the display will revert to its home pos...

Страница 8: ...the exception of beta carotene and chlorophyll A B it is sent to the printer with the result Observer PFX995 instruments only If the colour scale selected depends on the Observer and Illuminant the settings display will be shown in the display Press Menu Select menu item Scale Options Interfaces Select Options Select menu item Meas ID Params Logging Menu Select Params Select Standard Observer Path...

Страница 9: ...To change the specified wavelength press the key directly below Change on the screen and enter the new wavelength required Heater temperature if fitted with heater unit Press Menu Select menu item Heater Scale Options Interfaces ON Select Heat ON The heater controller unit is activated and powers the heater unit to the temperature set point that was last entered To input a new temperature set poin...

Страница 10: ...rect select Apply Otherwise select Change in which case the instrument will request entry of all time and date values in turn Enter Hours 24 hour clock Enter Minutes Enter Seconds Enter Day Enter Month Enter Year After entering each value press to move on The display will now show the date and time as entered Time 14 10 44 Date 29 04 1999 Change Apply If these values are correct select Apply If no...

Страница 11: ...ON Sample ID ON Off Off Apply The User ID function can be toggled on and off by pressing the directly below it The Sample ID function can be toggled on and off by selecting the directly below it When the required settings have been made select Apply to exit from this menu Menu access This function is designed so that the menu system can only be accessed by means of a password Press MENU Select men...

Страница 12: ...to prevent the temperature gradient from distorting the light beam Stirring the sample in the cell prior to measurement can help to create an even temperature throughout the sample Taking a measurement General instructions see below for special instructions relating to specific colour scales After the baseline measurement is finished the instrument is ready for use Position the sample cell at the ...

Страница 13: ... be used Care of glass cells Cells should be cleaned immediately after use and examined for cleanliness and flaws before further use otherwise sample transmittance values may be affected The cleaning process will depend on the nature of the sample If necessary immerse cells in a suitable strength warm solution of detergent for several hours Remove any remaining deposits on the cell faces by washin...

Страница 14: ...etailed in Checking measurements If the Lovibond PFX995 950 continues to give erratic readings run the diagnostic routine as follows Ensure that a printer is connected to the Lovibond PFX995 950 and that it is switched on Press Menu Select menu item Scale Options Interfaces Select Interfaces Select menu item Date Time Language Diagnostics Printer Select Diagnostics Start diagnostic test Press any ...

Страница 15: ...950 Lamp 5V 13 92 00 PFX995 950 sample chamber 13 89 10 PFX995 950 membrane keypad Instructions for replacement of spares are included under the section Replacing spare parts Accessories PFX950 Code Description 13 89 00 Upgrade kit for Chlorophyll A B and beta carotene 13 87 00 Windows software for data capture on PC Lovibond glass cells The Lovibond PFX995 950 instruments use the W600 series of g...

Страница 16: ...r can then check more than one point across the colour scale 11 Factors Influencing Inter Instrument Differences in Lovibond Colour Measurements A common query relates to inconsistencies in the Lovibond Colour values obtained for an individual sample when using different instruments for example an automatic Tintometer such as the PFX995 and a visual instrument such as the Model E or F or two diffe...

Страница 17: ...vibond instruments Incorrect Use of Visual Instruments Incorrect use of neutral racks The two neutral racks included with the Tintometer should be used to dull the sample so that the brightness in sample field and the brightness in the comparison field are comparable Many visual instrument users fail to use neutral glasses the result will be a lighter colour measurement to compensate for brightnes...

Страница 18: ...med every three months This interval can be extended as confidence grows in the stability of the instrument in the particular operating environment Recording Results The calibration results for the instrument may be recorded on the attached calibration result sheet Equipment Required 1 Certified conformance filter set 2 Thermometer Test Procedure Switch on the instrument Select the colour scale as...

Страница 19: ...olerances as identified on the certificate of conformity __________________________________________ Instrument indicated result prior to maintenance __________________________________________ Instrument indicated result post maintenance __________________________________________ Details of maintenance carried out Ambient temperature __________________ Performance status pass fail _________________...

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