Automatic sampler for gas and liquid

A sampler for sampling gas from a gas source and introducing the sample into a sample container, the sampler powered by the gas being sampled and comprising

• a pump for pumping a sample from the source into the sample container,
• a timer connected to the pump for intervally activating the pump and initiating a sampling cycle,
• a pressure regulator connected between the pump and the timer and connected to the source for regulating the pressure of the gas to the timer for operating the timer,
• a valve connected to the timer and operable by a mechanical means connected to the pump for resetting the timer upon completion of a sampling cycle.

An automatic sampler for sampling fluid from a fluid source and introducing the sample into a sample container, the sampler comprising

• a pump for pumping a sample of the fluid from the fluid source into the sample container, the pump including
• an inlet tube in communication with the fluid source,
• a pump cylinder having a top and a bottom in communication with the inlet tube for receiving the fluid flowing through the inlet tube from the fluid source,
• an inlet channel extending from the inlet tube to the pump cylinder,
• an inlet valve for opening and closing off the inlet tube, the valve comprising
• a plunger movably mounted in the inlet channel,
• an inlet O-ring mounted in the inlet tube,
• a spring for urging the plunger into contact with the inlet O-ring,
• the plunger yieldably mounted so that pressurized fluid from the fluid source will push the plunger back into the inlet channel against the spring permitting fluid to flow through the inlet channel and into the pump cylinder,
• the plunger formed so that it restricts the volume of fluid in the inlet channel,
• an outlet tube in communication with the pump cylinder and the sample container through which the sample flows from the pump cylinder to the sample container,
• an outlet channel extending from the pump cylinder to the outlet tube,
• an outlet valve mounted in the outlet tube for opening and closing off the outlet tube at the point at which the outlet tube communicates with the outlet channel, the outlet valve comprising
• an outlet O-ring mounted in the outlet tube and
• a spring-biased plunger movably mounted in the outlet tube so that the plunger is yieldably urged into the outlet O-ring by the spring thereby closing off the outlet tube and preventing the flow of fluid from the outlet channel into the outlet tube,
• a purge valve mounted in the bottom of the pump cylinder for purging the pump cylinder at the beginning of each sampling cycle, the purge valve having a purge valve O-ring mounted therein,
• a pump piston movably mounted in the pump cylinder for moving the sample from the pump cylinder, through the outlet channel and the outlet valve, through the outlet tube and into the sample container,
• a stinger mounted to and projecting from the pump piston so that movement of the piston moves the stinger into contact with the purge valve O-ring thereby closing the purge valve,
• a timer connected to the pump for intervally activating the pump and initiating a sampling cycle
• a pressure regulator connected between the pump and the timer and connected to the fluid source for regulating the pressure of the fluid flowing to the timer for operating the timer,
• a valve connected to the timer and operable by a mechanical means connected to the pump for resetting the timer upon completion of each sampling cycle, and
• the pressurized fluid flowing from the timer during a sampling cycle to the pump to force the pump piston downward in the pump cylinder.

A sampler for sampling liquid from a liquid source and introducing the sample into a sample container comprising

• a pump means for pumping a sample of the liquid from the liquid source to the sample container,
• a timer connected to the pump for intervally activating the pump,
• a gas source connected to the timer,
• a pressure regulator connected between the gas source and the timer for regulating the pressure of the gas from the gas source to the timer, and
• a valve connected between the timer and the pump for resetting the timer.

A sampler for sampling liquid from a liquid source and introducing the sample into a sample container, the sampler comprising

• a pump for pumping a sample from the liquid source into the sample container,
• a timer connected to the pump for intervally activating the pump and initiating a sampling cycle,
• a gas source connected to the timer,
• a gas-operated pressure regulator connected between the gas source and the timer for regulating the pressure of the gas from the gas source to the timer, and
• a valve connected to the timer and operable by a mechanical means connected to the pump for resetting the timer upon completion of a sampling cycle.