The present invention includes an apparatus and method for detecting the location of one or more sources of one or more target molecule, the apparatus comprising: a molecule detector; and a processor connected to the molecule detector and to a global position system, wherein the processor calculates the presence of the one or more target molecules, runs a computer code that determines a dynamic reverse gas stack model for the one or more target molecules, and triangulates the possible position for a source or effluent of the one or more target molecules based on the dynamic reverse gas stack model. The determined reverse gas stack model may have a Gaussian dispersion over one or more sampled locations.

The present invention includes an apparatus and method for detecting the location of one or more sources of one or more target molecule, the apparatus comprising: a molecule detector; and a processor connected to the molecule detector and to a global position system, wherein the processor calculates the presence of the one or more target molecules, runs a computer code that determines a dynamic reverse gas stack model for the one or more target molecules, and triangulates the possible position for a source or effluent of the one or more target molecules based on the dynamic reverse gas stack model. The determined reverse gas stack model may have a Gaussian dispersion over one or more sampled locations.

A measurement station for measuring airborne molecular contamination includes at least one gas analyser, at least two controllable isolation valves connected in parallel to the input of the at least one gas analyser, a conditioning pump, at least two calibrated orifices connected in parallel to the input of the conditioning pump, at least one distributor to connect each controllable isolation valve with, on one side, a sampling line and, on the other side, a calibrated orifice, and a control unit linked to the controllable isolation valves. The control unit commands the opening or the closing of the controllable isolation valves in order to be able to connect the at least one gas analyser with at least one sampling line.

A measurement station for measuring airborne molecular contamination includes at least one gas analyser, at least two controllable isolation valves connected in parallel to the input of the at least one gas analyser, a conditioning pump, at least two calibrated orifices connected in parallel to the input of the conditioning pump, at least one distributor to connect each controllable isolation valve with, on one side, a sampling line and, on the other side, a calibrated orifice, and a control unit linked to the controllable isolation valves. The control unit commands the opening or the closing of the controllable isolation valves in order to be able to connect the at least one gas analyser with at least one sampling line.

Methods and apparatus for an exhaust demand control system for measuring one or more contaminants at one or more exhaust locations within one or a plurality of exhaust ducts or plenums served by an exhaust fan system. Example systems and methods can include sensing the one or more contaminants within the one or more exhaust duct locations using a multipoint air sampling system having one or more sensors and comparing contaminant concentration measurements from the one or more of said exhaust duct or plenum locations against an action level to create a fan setback signal.

Devices and methods for inspecting containers for the presence of foreign matter include, in at least one embodiment, at least one sampling head, at least one pressure sensor, and a filter. The at least one sampling head is configured to introduce an amount of a first fluid into a container and to remove an amount of a second fluid from the container for inspection for the presence of foreign matter. The at least one pressure sensor is configured to measure a pressure of the second fluid upon removal of the second fluid from the container. The filter is arranged in the at least one sampling head and is configured to filter the second fluid.

An environmental sampling and assay system, having a coupon storage assembly, storing coupons; an environment sampling assembly, the sampling assembly mixing an environmental sample with a liquid to create a sample-liquid, bearing the environmental sample; a coupon moving assembly; a coupon wetting assembly for automatically wetting a coupon with the sample-liquid; a coupon perceiving device; a data input, adapted to receive a signal; and a data processing and control assembly, controlling the environmental sampling system, the coupon moving assembly, the wetting assembly and the coupon perceiving device. Further, the coupon moving assembly can retrieve a coupon from the coupon storage assembly and move it in a linear manner to the coupon wetting assembly.

A method of operating an aspirating fire detector system (3) including a fire detector (19), a conduit (7) having an inlet and being connected to the fire detector (19), a ventilator (15) configured to draw air through the inlet of the conduit (7) and into the fire detector (19), a pressure sensor (13) configured to sense the pressure of air being that is drawn through the inlet and into the fire detector (19), and a flow meter (17) configured to measure the flow of the air drawn through the inlet and to the fire detector (19).

A method of operating an aspirating fire detector system (3) including a fire detector (19), a conduit (7) having an inlet and being connected to the fire detector (19), a ventilator (15) configured to draw air through the inlet of the conduit (7) and into the fire detector (19), a pressure sensor (13) configured to sense the pressure of air being that is drawn through the inlet and into the fire detector (19), and a flow meter (17) configured to measure the flow of the air drawn through the inlet and to the fire detector (19).

Modular docking station and methods for sampling and monitoring gas and other fluids, where a sampling device is able to be removably attached to the docking station, thereby allowing the sampling device to be replaced without having to remove or disconnect the docking station from the rest of the sampling system. This allows the docking station to remain connected to the rest of the system with minimal or no interruption and reduces maintenance costs and time when replacing the sampling device.