FUNCTIONAL DESCRIPTION OF LABORATORY SYSTEMS - continued.
Vacuum Side. Vacuum is created from the vacuum side of pump. A vacuum
stopcock is located on the countertop next to the sink. Air is sucked through the stopcock
and into the vacuum-air pressure pump. A regulator and gage mounted on top of the
vacuum-air pressure pump is provided to control vacuum pressure.
Pressure Side. Pressure is created from the air sucked into the vacuum air
pressure pump vacuum side. Air being exhausted from the pump is supplied to an air
surge tank. Pressure to the air surge tank is regulated by a regulator and gage mounted
on top of the vacuum-air pressure pump. A drain cock on the line to the air surge tank is
provided to release air pressure from the system. The surge tank has a relief valve
mounted on it to prevent over pressurization of the system. The output from the air
surge tank is sent to an air pressure stopcock mounted next to the vacuum stopcock on
the countertop next to the sink. Air also is routed to the manometer and a test gage
fitting through a pressure regulator. The pressure regulator, manometer and test gage
fitting provides a means of checking and calibrating the RVP bath gages.
1-14. FUNCTIONAL DESCRIPTION OF LABORATORY UNIQUE EQUIPMENT.
The following paragraphs describe some of the equipment mounted or stored within the laboratory.
For equipment not described in these paragraphs, refer to the appropriate technical manual listed in
Flash Point Tester Unit. The flash point tester unit used for ASTM D-93 and is designed
to determine the flash point of fuel oils, lube oils, suspensions of solids, liquids that tend to form
a surface film under test conditions, and other liquids. The flash point tester operates on 110V,
60 Hz, single-phase power supplied from a convenience outlet. It is an electrically heated
closed-type unit, with two thermometers, one with a range of 20 to 230°F ( -6.1 to 110°C), and
the other with a range of 200 to 700°F (93 to 371°C).
Distillation Unit. The distillation unit is used for ASTM D-86. The unit consists of a
shield assembly and a condenser assembly. The shield and condenser exteriors are constructed
of stainless steel. The condenser interior is constructed of copper, insulated with a 1-inch
thickness of fiberglass. The ice-refrigerated condenser is equipped with a drain and overflow
outlet, and a distilled-fuel outlet. An immersion heater is contained in the condenser unit to
control the temperature. The shield encloses a 750W heater with auto transformer, two
porcelain refractory blocks, observation window, an elevating device to allow proper alignment
of the distillation flash to the condenser tube, a temperature-control assembly, and an on/off
Fuel Sampling Kit. The fuel sampling kit is used for ASTM Method D2275. The unit is
used for field sampling of liquids from pressurized systems by means of millipore fuel monitors.
The contaminant retained on the test filter held in the monitor is retained for subsequent
analysis. The sampling kit contains a stainless steel holder (sampler assembly) for the
monitors, and the tubing, connectors, and accessories required to perform the sampling
operation and prepare the monitor for subsequent analysis. The monitors are disposable
plastic filter holders made of fuel resistant Tenite and preloaded with 37-millimeter filters.
The entire kit is enclosed in a hard plastic carrying case.