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Summary of Contents for Lovibond PFX995 Series
- Page 1 Lovibond PFX995/950 Series OPERATORS INSTRUCTION MANUAL ISSUE NO. V1.3 DATE 12/12/00...
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Page 2: Table Of Contents
10. Accessories and spares ………………………………………… 15 Spares Lovibond glass cells Calibrated glass filter sets 11. Factors Influencing Inter-Instrument Differences ………….. 16 in Lovibond Colour Measurements 12. Calibration ………………………………………………………… 18 Lovibond PFX995/950 calibration procedure Lovibond PFX995/950 calibration test result sheet ISSUE NO. V1.3 DATE 12/12/00... -
Page 3: Introduction
Colour scales and optional items The Lovibond PFX995/950 instruments are designed to meet the colour analysis requirements in the oils/chemicals and the mineral oils/petrochemicals industries. The PFX995 provides colour data according to a full range of established industry scales. The PFX950 is limited to the most commonly used scales. -
Page 4: Accessories Supplied
Colour Scales Scope Range 995/P 950/P AOCS-Tintometer Special red and yellow version of the Lovibond RYBN 0 - 20 Red, 0 - 70 Yellow • • scale used for oils, fats and derivatives ASTM Colour A wide range of petroleum products including lubricating 0.5 - 8 units... -
Page 5: Technical Specification
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. Carefully remove the Lovibond PFX995/950 from its packing case. There are no internal packing pieces so that when all extraneous material has been removed the instrument is ready for use. -
Page 6: Using The Keypad And Display
The remaining connection ports at the rear of the instrument are for use with various peripherals - printer and computer. RS232 Parallel 24V Input ON/OFF Switch The printer outlet is a standard Centronics interface and will connect to any parallel printer. A standard parallel interface cable (Centronics - Centronics) can be purchased from most computer suppliers. -
Page 7: Path Length
100 mm Saybolt Colour Saybolt -16 (darkest) to +30 (lightest) 100 mm AF960 Lovibond AF960 Lovibond RY 0 - 20 Red, 0 - 70 Yellow User selected AF960 AOCS AF960 AOCS RY 0 - 20 Red, 0 - 70 Yellow... -
Page 8: Illuminant
To select a path length, press [Menu] Select menu item Scale Options Interfaces Select [Options] Select menu item Meas ID Params Logging Menu Select [Params] Select menu item Path Observer Illuminant Select [Path] Select path length >25.4 mm (1”) Next Previous Use [Next] or [Previous] to scroll through the list of available path lengths. -
Page 9: User Specified Wavelength
Select [Options] Select menu item Meas ID Params Logging Menu Select [Params] Select menu item Path Observer Illuminant Select [Illuminant] Select Illuminant Select [A] for CIE Illuminant A, representative of a tungsten lamp at a colour temperature of 2856 K; [C] for CIE Illuminant C, representative of average daylight as from an overcast sky, with a colour temperature of 6774 K;... -
Page 10: Date And Time
The printer option can be toggled on and off by selecting [Printer:ON/OFF]. The form-feed option can be toggled on and off by selecting [Formfeed:ON/OFF]. To change the type of printer being used, select [Type]. The display will appear as below: Select printer type Text Select [Text] for printers using standard Epson escape sequences. -
Page 11: User And Sample Id Options
To choose the port for the measurement log select [PORT]. Select port for measurement log Parallel Serial Both Parallel: The measurement log is sent to the parallel port. Serial: The measurement log is sent to the serial port in ASCII format. Both: The measurement log is sent to the parallel port and then to the serial port. -
Page 12: Measuring A Sample
When performing a baseline measurement always ensure that the sample chamber is empty. The Lovibond PFX995/950 automatically takes a baseline measurement when it is first switched on. This measurement should be repeated at least every 4 hours by pressing the [ZERO] key. -
Page 13: Recording Results
Only EN 60950 approved computers should be connected to the RS 232 port. A software program that allows direct control of the Lovibond PFX995/950 from an IBM compatible computer can be purchased from the supplier. This software pack is supplied with an RS232 lead. -
Page 14: Warning Messages
Maintenance Fault finding and diagnostics The Lovibond PFX995/950 instruments are designed with only a single moving part and a range of thoroughly tested components that should give long, trouble-free service. Users are notified of lamp failure by means of a message on the display. -
Page 15: 10. Accessories And Spares
Lovibond glass cells The Lovibond PFX995/950 instruments use the W600 series of glass cells. The choice of cell path length depends on the instrument version and the colour scale being used. For versions equipped with the heater unit and whenever hot samples are measured, it is recommended that borosilicate cells be used. -
Page 16: Calibrated Glass Filter Sets
Poor Maintenance of a Visual Instrument The Lovibond Tintometer is a precision optical instrument and any discoloration of the white surfaces or dirt on the various optical components will affect the nature and balance of illumination within the instrument and result in false readings. As a result, for consistency and accuracy in colour measurement, the Tintometer should be kept as clean as possible and the whiteness of the sample chamber and the white reference maintained. - Page 17 Inappropriate choice of path length. The optical path length of the cell used should be related to the colour intensity of the sample. As a guide, it is advisable to restrict the colour intensity of the sample to less than a total of 30 - 40 Lovibond units. Using a shorter path length cell can reduce colour intensity.
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Page 18: Calibration
LOVIBOND PFX995/950 CALIBRATION PROCEDURE Introduction By following these instructions and using the calibration result sheet provided, the user can carry out regular calibration of the PFX995/950 instrument. This procedure verifies that the PFX995/950 is performing within its stated accuracy and precision. The instrument has a stable measurement system that has no internal adjustments. -
Page 19: Lovibond Pfx995/950 Calibration Test Result Sheet
LOVIBOND PFX995/950 CALIBRATION TEST RESULT SHEET Instrument serial number: _________ Conformance filter serial numbers: _________ Instrument Recorded Results: Conformance filters certified values: __________________________________________ Instrument measurement tolerances as identified on the certificate of conformity: __________________________________________ Instrument indicated result (prior to maintenance): __________________________________________...
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