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Part No: ATAC7613 |
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| The model 7613 colour
analyser / monitor is completely automatic process steam instrument measuring
colour ranges in the ASTM D156, D1209 or D1500 ranges |
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Fuel monitoring - transportation fuels may be coloured in order to facilitate
their correct allocation. Mistakes such as putting the wrong fuel into a tank,
can be avoided |
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Dying of gas oil -the same fuel can be taxed by governements at differeent
levels depending their application so different coloured dyes are used to
distinguish them |
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Online blending - the 7613 can be sued to check the colour of a product during
blending |
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Interface detection - liquids of very similar density alternatley using a
common pipeline can be identified and directed to the correct storage tank |
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Oil heat exhanger breakthrough |
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The colour monitor
responds to color changhes by measuring the differential light absoprtion at
two wavelengths and the ratio of these absorptions.
A source of filtered
light from tungsten lamp is modulated by a mechanical chopper which has two
coloured filters. One filter (reference is chosen so that the light beam
produced is minimally absorbed regardless of colour changes in the sample. The
other filter (measurement) is chosen so that the light beam produced is
appreciably absorbed as the sample colour changes (eg oil wil absorb blue light
quite strongly as oil becomes more yellow).
the emergent light is passed
via the sample cell onto the photocell. |
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The rotation of the
chopper is coordinated so that alternative outputs from the photocell
(reference - measurement) may be amplified, individually stored and then
compare to each other.
If the comparison shows the sample is more than
predetermined amount darker than selected, the alarm operates. Alternatively by
means of links in the printed circuit card, the alarm can operate where the
sample is lighter than selected. the external control is a self re-setting
twist to set facility which enables the light beams to be unbalanced in the
order to test the system. |
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| For full data sheets
and a written quotation please contact our Mindex office on
sales@mindex-ltd.co.uk including
your company name, telephone numbers and details of your product of
interest |
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