1-14. FUNCTIONAL DESCRIPTION OF PETROLEUM LABORATORY UNIQUE EQUIPMENT - continued.
Gas Alarm System. The gas alarm system consists of a main control unit (cabinet assembly) and two remote
detector assemblies. The main control unit is wall mounted on the roadside and connects electrically to the two
detector assemblies. The system operates on 110V, 60Hz, single-phase power supplied by AICB22 located in the
MAIN POWER PANEL. The main control unit supplies 5.5 NVDC to the detectors. The alarm is calibrated for
propane and has a setting of 20 to 40 percent of the lower explosive limit (lel) of gasoline. An indicating meter in the
control unit shows the concentration being monitored and adjustable dual-level alarm circuits are triggered whenever
a concentration exceeds the lel. The alarm alerts personnel of combustible mixtures that could cause explosions or
cause fires, and automatically activates the air purge system.
Separometer. The separometer provides a quick, portable means for field and laboratory use to rate the ability
of aviation turbine fuels to release entrained or emulsified water "when passed through fiberglass coalescence
material. The test provides a measure of surface active materials in aviation turbine fuels, which are known to affect
the ability of filter separators to separate free water from fuel. The apparatus is a portable self-contained unit
operating on an internal rechargeable battery. The unit may be operated at sites where no AC power is available or it
may also be operated while connected to an AC power line.
Anti-Icing Additive Testing Kit. This apparatus is contained in a carrying case and is stored in the laboratory
cabinets. It consists of a hand held, direct reading refractometer, support base rod and ring, separatory funnel,
graduated cylinder, aluminum dishes,, piston pipets, and a polypropylene bottle. It is used to determine the percent
volume of anti-icing additive in jet turbine engine fuels.
Sampling and Gaging Kit. The sampling and gaging kit is used to perform ASTM tests D-270, D-287, D-1085,
D-1086, D-1250, and D-1298. It is a portable petroleum testing kit which is stored in the laboratory cabinets. It
consists of the carrying case, shoulder strap, gravity computer, cupcase thermometer, hydrometer cylinder, gasoline
indicating paste, water indicating paste, image tape and bob, weighted beaker sampler, and standard hydrometers.
Gum Bath. The gum bath is used in ASTM test D-381. It is used to determine the existent gum in motor
gasoline, aviation gasoline and turbine fuels. The bath is mounted on the front wall curbside. It operates on 11OV,
60Hz, single-phase power supplied by A1CB18 located in the MAIN POWER PANEL. There is a thermometer well
provided in the center of the bath to accommodate a thermometer with a temperature range of 20 to 7600F (-5 to
4000C). An indicating and controlling pyrometer, and an air flowmeter and an air regulator valve. The gum bath
utilizes steam supplied from the high pressure boiler which is located adjacent to the bath and connected to it by
appropriate valving and piping.
High Pressure Boiler (Steam Super Heater). The high pressure boiler is designed for use in ASTM test D-381.
It operates on 11OV, 60Hz, single-phase power supplied by A1CB19 located in the MAIN POWER PANEL. The high
pressure boiler is mounted on the front wall curbside to the right of the gum bath. It is a circulation heater used to
raise the temperature of steam which it receives from the low pressure boiler (steam generator) located in the
mechanical room. It, in turn, then supplies this super heated steam to the gum bath. The high pressure boiler is
equipped with a thermostatic control which can be set to desired temperatures up to 550°F (288°C). The auxiliary
switch on the gum bath turns the high pressure boiler on or off.