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TRANSIT CASE FOR CAPTURED FUEL TESTER
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TM-5-6630-217-10 Water Quality Analysis Set Preventive Medicine Water Quality Analysis Set Engineer Manual
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Test Kit for Captured Fuel - TM-5-6630-217-10_10
Test Kit for Captured Fuel TM 5 6630 217-10 Specific Gravity Measurements (cont.) This  is  an  unacceptable  or  "NOGO"  fuel.    The  tester  is  appropriately  labeled with  "GO"  and  "NOGO"  positions  The  specific  gravity  system  is  temperature compensated because the specific gravity of the density indicator relative to that d   the   sample   will   remain   constant.      (Because   the   container   allows   for   the density vs.  temperature changes and the fluid is similar to the fluid under test.) Adequate    time    must    be    allowed    for    the    indicator    to    become    the    same temperature as the fuel under test. Viscosity Measurement Viscosity   measurement   is   by   means   of   "submerged   orifice   falling   column comparative  viscometers."  Three  parallel  viscometer  tubes  are  utilized.    The middle tube is open to receive the unknown fuel.  The tubes on either side are sealed and contain hydrocarbon fluids that represent the lower and upper limits of acceptable viscosity (1.3 and 5.0 centistokes at 40 degrees Celsius). The  length  of  the  tubes  has  been  kept  to  a  minimum,  however  they  are  long enough   to   allow   sufficient   time   for   the   liquid   columns   to   fail   and   give   an adequate   reading.      The   viscometer   will   be   operated   by   first   removing   the instruction card and placing the test kit on it back (card holder down) on a level surface  to  allow  the  columns  to  fill  with  fluid  and  lose  all  bubbles.    The  kit  is then raised to an upright position (caps down) so that all the columns start to fall  at  the  same  time.    Acceptability  is  indicated  by  the  lower  limit  column (mounted  on  the  left  facing  the  operator)  reaching  the  bottom  first;  the  test sample  column  (mounted  In  the  middle)  reaching  the  bottom  second;  and  the upper limit column (mounted on the right) reaching the bottom last.  The three tubes are marked as follows from left to right: "1", "2", and "3".  Acceptability or "GO" requires that the columns fall In the order 1-2-3 any other order to fail is considered unacceptable or "NOGO". Visual Contamination Level Measurement Fuel contamination In the form of suspended solids and emulsified water will be measured by means of a visual indicator.  The indicator is in the fourth module of   the   tester   and   shares   this   module   with   the   specific   gravity   indicating densimeter.  The back side of the module is marked with a rectangular grid of black lines on a white background. Page 5

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