ISSUE NO. V1.3 DATE 12/12/00
5
Technical specification
Measurement principle:
16 all dielectric interference filters high pass bandwidth 20 nm
±
0.5 nm
Spectral response:
420 - 710 nm
Filter wavelengths (nm):
420, 445, 460, 470, 490, 510, 530, 550, 570, 595, 605, 630, 645, 670, 685, 710
Repeatability:
- chromaticity (x y):
±
0.0002
- transmittance:
±
0.25%
- Lovibond values (PFX995/950)
±
0.1
- Saybolt values (PFX995/950/P)
±
1
Measurement time:
Less than 25 seconds
Calibration:
Single key press, fully automated
Light source:
5 Volt, 10 Watt tungsten halogen lamp (lens ended)
Detection system:
Large area pin photodiode (blue enhanced)
Illuminant:
CIE Illuminant A, C, D65 (C only on PFX950)
Observer:
2
°
, 10
°
(2
°
only on PFX950)
Sample requirements:
Liquids or transparent solids in Lovibond precision optical glass cells
Interfaces:
Parallel (Centronics) printer port; serial RS 232 port (9 pin)
Input voltage:
Universal, via external power supply
Power consumption:
60 Watts (24 Volts)
Approvals:
CE
Display:
2 x 40 character back-lit LCD
Keypad:
21 key membrane keypad; washable polyester with audible feedback
Heater unit:
Factory fitted option, 95
°
C max
Environmental requirements:
- temperature range
- relative humidity (non-condensing)
Instrument housing:
Dimensions:
Instrument weight:
Internal Fuse rating:
Technical assistance:
Ope5
°
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. 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. The power supply, mains lead and accessories are all included
in the packaging.
Installation
Place the instrument on a bench near a mains voltage supply which is free from excessive voltage fluctuations. The external power
supply is auto voltage sensing, so no setting up is required for local voltages.
Do not operate the instrument in an atmosphere containing explosive gases.
Plug in the mains lead and switch on. The green backlight of the display will indicate that the instrument is on.
If a new plug is fitted then it MUST be earthed
.
If the instrument has been in a cold environment prior to setting up, allow the instrument to warm up to room temperature before
switching on, and insure that all condensation has dissipated.
Always ensure that there is sufficient free space around the instrument to maintain a constant flow of air.
