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Part No: ATAC7612 |
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| The model 7612
opacity monitor is completely automatic process stream instrument for measuring
opacity due to 'dirt and haze' in a liquid stream |
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| The monitoring of water in liquid
prcoess steams. Detection of leaks in large heat exchangers. |
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The opacity monitor
works on the principle of comparing the intensity of two light signals.
A Source of filtered light from a tungsten lamp illuminates the foot of
a randomized fibre optic Y piece. One arm of the Y goes to a sample cell and
the other to a reference light attenuator which reduces light intensely by a
preset amount and incorporates a test facility. The two emerging beams are fed
via additionally fibre optics to a photocell in front of which is a chopper
that selects the beams alternatively. The rotation of the chopper is
coordinated so that alternate outputs from the photocell may be individually
stored, and compared and their ratio determined.
If the the comparison
shows the sample is more than a predetermined amount darker than selected, the
alarm operates. |
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| Alternatively by
means of links in the printed circuit card, the alarm can operate where the
sample is lighter than selected. The monitor is principally used for detection
of haze in gas oil. |
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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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