| 摘要 |
A sampling device for sampling the output of compressed gas sources, such as air compressors, for solid contaminants, such as debris and oil mist, and for gaseous contaminants, such as carbon monoxide and for obtaining filter samples and plenum samples for laboratory analysis generally comprises a manifold including a first conduit and a second conduit, a filter device, a safety valve, a sampling bomb, a flow director valve, and a pressure control valve. The first conduit has a gas receiving end and a filter device end. The second conduit has an inlet end connected to the first conduit and a vent end. A flow director valve at the junction of the first and second conduits is operable from a full shunt position wherein all incoming gas is directed into the second conduit and a full open position wherein incoming gas is directed to the filter or the second conduit. A pressure control valve disposed in the second conduit near the vent end controls the exit of gas out the vent. A sampling bomb is connected to the second conduit between the inlet end and the pressure control valve. A pressure relief valve may also be so connected. This sampling device enables a user to sample with a single device compressors of widely varying pressure and volume outputs while the compressor is operating at its maximum output.
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