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D4860_10 (14)

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Immediately upon drawing a sample for field testing, check visually for evidence of water or particulate contamination. Hold the sample container up to the ambient light source and view the fuel through the walls of the container, visually examining for haze or lack of clarity. Check the same sample by swirling the fuel in the sample container to produce a vortex. The bottom of the vortex is visually examined for particulate matter. Record the visual clarity as clear and bright or not clear and bright. Record if particulate matter or water was or was not viewed at the bottom of the vortex. Measure the temperature of the fuel to plus or minus 2 degrees Celsius, and record. Cap the container. Select the Clear and Bright test mode. The syringe drive mechanism travels to the up portion. And the proper syringe drive speed is automatically selected. Remove the plunger, figure 3C of the written standard, from a new 50-milliliter syringe. And wipe the tip using a clean, lintless wipe to remove any sheen caused by excess lubricant. Insert a plug, figure 3A of the written standard, into the tapered bottom of the syringe barrel, figure 3B of the written standard. Add 50 millimeters plus or minus 1 milliliter of fuel sample into the barrel of the syringe. Partially insert the plunger to seal the open end of the syringe. Invert the syringe, exit hole up. Remove the plug. And expel the entrapped air in the syringe barrel without significant fuel loss by carefully inserting the plunger to the 50-milliliter mark. Use a clean wipe over the exit hole to capture the small amount of fuel which may be extruded as foam. Affix a new clear and bright coalescer, figure 3E of the written standard, to the end of the syringe barrel. Place the entire syringe assembly into the syringe drive mechanism. Electrically bond the coalescer and filler to the instrument by using the ground lead provided. Insert the end with a banana plug into the receptacle located left of the syringe drive mechanism. And attach the alligator clip to one of the coalescer filter fins. Position a waste container beneath the coalescer filter. See 7.2.4 of the written standard to collect the unwanted portion of the processed fuel sample during the coalescing and filtering period of the test, figure 4 of the written standard. Warning-- clear and bright coalescer filters should be electronically bonded to the micro-separometer to prevent buildup of an electrostatic charge that could result in ignition of flammable test fluids, figure 4 of the written standard. Depress the Start pushbutton, which initiates the automatic program. See table 1 of the written standard. The automatic program is a series of timed events controlled by the instrument that begins with the syringe drive mechanism forcing the fuel through the coalescer filter. Discard the first 35 milliliters of expended fuel. And, using a new vial, collect the last 15 milliliters of fuel sample being processed from the coalescer filter, figure 5 of the written standard. To lessen the amount of air introduced into the fuel during this operation, position the vial at a slight angle and allow the fuel to flow down the inner surface. Wipe the outside of the vial with a clean, lintless wiper to remove fingerprints and fuel. Insert the vial into the turbidimeter well, aligning the black mark on the vial at 90 degrees from the white line on the front of the turbidimeter well. Rotate the vial until the black mark on the vial aligns with the white line on the front of the turbidimeter well. Adjust the meter to the 100 reference level. A short four-second tone sounds, followed by the meter activating for 10 seconds. During this period, the meter is adjusted to the 100 reference level by depressing the appropriate arrow pushbuttons. At the end of the 10-second period, the meter will deactivate for 30 seconds. Once the meter deactivates, further adjustment of the meter from this point on through the end of the test is not possible. Remove the vial from the turbidimeter well, and discard the sample. Half-fill the vial with fresh fuel sample that has not been processed, filtered. Wipe the outside of the vial with a clean, lintless wiper to remove fingerprints and fuel. Place the sample vial into the turbidimeter well, aligning with marks on the vial with those on the control panel in front of the well. Read the MSEP clear and bright rating, following the 30-second meter off period that occurs after the coalescing filtering process. A four-second tone sounds. And the meter automatically activates for a period of 10 seconds. Mark 5 Deluxe during this period. Read and record the value displayed on the meter. The Mark 10 instrument automatically measures the C and B rating.

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Duration: 5 minutes and 37 seconds
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Language: English
License: Dotsub - Standard License
Genre: None
Views: 5
Posted by: abuckmaster on Sep 14, 2018

D4860_10 (14)

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