Page 48 - 6653
P. 48

a wide-hole with a finger, the fuel with a pear is drawn into the
            narrow  knee  of  the  viscometer  to  the  label  М 2  between  the
            capillary and the expansion. After that the viscometer is turned
            to normal position and wipes a narrow knee from the traces of
            fuel.






















            1 - wide knee; 2 - narrow knee; 3,4,6 - expanding capacities; 5 -
            capillary; 7 - rubber tube; 8 - thermostat; 9 - thermometer; 10 -
            mixer; 11 - electric heater; M1 - top mark; M2 - lower label; a)
            viscosimeter  of  type  ВПЖ-2;  b)  filling  the  fuel  with  a
            viscosimeter Pinkevich; c) viscosimeter ВПЖ-2 in a thermostat

                   Figure  9.1  -  Device  for  determining  the  kinematic
            viscosity of fuels
                   Viscometer  is  mounted  vertically  to  the  thermostat  so
            that  the  upper  label  M1  is  below  the  water  level  in  the
            thermostat. During the test, the temperature in the thermostat is
            maintained  constant  and  even  20  С.  Control  it  with  a
            thermometer. The water in the thermostat is mixed with a blade
            mixer 10. The viscometer is kept in the thermostat for at least
            15 minutes, so that the fuel takes a given temperature.
                                         45
   43   44   45   46   47   48   49   50   51   52   53