Abstract: In one example, a sample gas analyzer includes a sample cell configured to receive a gas sample, a sample tube including a passageway that is in communication with the sample cell, and an intake portion. A cleaning element is disposed between, and arranged for fluid communication with, the sample tube and the sample cell, and includes a body having a chamber configured to aid in imparting a rotational motion to a fluid stream entering the chamber. The cleaning element also includes an inlet port that is in communication with the chamber and that is configured and arranged for communication with the atmosphere. Finally, the cleaning element includes an outlet port in communication with the chamber and the sample cell.

Abstract: An environment monitoring system is described. In an example embodiment, an environment monitoring system includes a portable environment monitor configured to provide environment information to a plurality of applications, including a first application. The portable environment monitor includes a sensor and an antenna. The sensor is configured to monitor a characteristic of an environment proximate the sensor. The antenna is configured to form an interface with a mobile device. The portable environment monitor is configured to transmit environment information to the mobile device such that the environment information is provided to the first application located on the mobile device. The first application is configured to process the environment information and display data on a display of the mobile device based at least in part on the environment information. The environment information is based at least in part on the characteristic of the environment monitored by the sensor.

Abstract: An environment monitoring system is described. In an example embodiment, an environment monitoring system includes a portable environment monitor configured to provide environment information to a plurality of applications, including a first application. The portable environment monitor includes a sensor and an antenna. The sensor is configured to monitor a characteristic of an environment proximate the sensor. The antenna is configured to form an interface with a mobile device. The portable environment monitor is configured to transmit environment information to the mobile device such that the environment information is provided to the first application located on the mobile device. The first application is configured to process the environment information and display data on a display of the mobile device based at least in part on the environment information. The environment information is based at least in part on the characteristic of the environment monitored by the sensor.

Abstract: An open-path gas analyzer is disclosed and is configured to prevent or reduce contamination of the analyzer over time.

Abstract: An environment monitor is described. In an example embodiment, an environment monitor includes an outer housing, an inner housing, and an environment sensor. The inner housing is slidingly positioned relative to the outer housing. The inner housing is configured to be selectively positioned at a first position relative to the outer housing and selectively positioned at a different second position relative to the outer housing. The environment sensor is configured to monitor a characteristic of an environment proximate the sensor. The sensor is positioned on the inner housing such that the environment sensor is at least partially positioned within the outer housing when the inner housing is at the first position relative to the outer housing, and is positioned outside the outer housing when the inner housing is at the second position relative to the outer housing.

Abstract: In one example, a sample gas analyzer includes a sample cell configured to receive a gas sample, a sample tube including a passageway that is in communication with the sample cell, and an intake portion. A cleaning element is disposed between, and arranged for fluid communication with, the sample tube and the sample cell, and includes a body having a chamber configured to aid in imparting a rotational motion to a fluid stream entering the chamber. The cleaning element also includes an inlet port that is in communication with the chamber and that is configured and arranged for communication with the atmosphere. Finally, the cleaning element includes an outlet port in communication with the chamber and the sample cell.

Abstract: A system and method for measuring a frequency of a wire in a vibrating wire gauge. The system may include a signal generator for generating a signal at a frequency that matches a frequency of the wire vibration and an excitation unit for exciting the wire to increase an amplitude of the wire vibration. The excitation unit may excite the wire using the signal. The system may further include a signal gate for controlling when the signal is sent to the excitation unit.

Abstract: A system and method for measuring a frequency of a wire in a vibrating wire gauge. The system may include a signal generator for generating a signal at a frequency that matches a frequency of the wire vibration and an excitation unit for exciting the wire to increase an amplitude of the wire vibration. The excitation unit may excite the wire using the signal. The system may further include a signal gate for controlling when the signal is sent to the excitation unit.

Abstract: A probe with antifouling components. The probe includes a sensor for measuring attributes of a fluid such as liquid or gas. The probe includes antifouling components to prevent or inhibit fouling. The antifouling components include material components, antifoulant components such as biocide, scaling inhibitors, etc., and wiper/shutter components that are arranged to collectively prevent or inhibit fouling of the probe or of the sensor included in the probe.

Abstract: Systems and methods for analyzing the resonant frequency of vibratory wires within vibratory wire gauges. The resonant frequency of the vibrating wire is determined by using an interface that digitizes the response of an excited wire in the gauge. A transform then converts the digitized data into a frequency spectrum. The resulting spectrum is used to estimate the resonant frequency of the vibrating wire. The resulting measurement or estimate of the resonant frequency can be used to measure or determine some physical characteristic of the device or structure or system connected to the gauge.

Abstract: Systems and methods for analyzing the resonant frequency of vibratory wires within vibratory wire gauges. The resonant frequency of the vibrating wire is determined by using an interface that digitizes the response of an excited wire in the gauge. A transform then converts the digitized data into a frequency spectrum. The resulting spectrum is used to estimate the resonant frequency of the vibrating wire. The resulting measurement or estimate of the resonant frequency can be used to measure or determine some physical characteristic of the device or structure or system connected to the gauge.

Abstract: A hanger for suspending equipment within an existing liquid storage tank includes a longitudinal channel having one end adapted to be fixed adjacent to the upper end of a receiving riser pipe and a second end adapted to project within the tank. A parallel arm assembly is foldable at the second end of the channel and is movable longitudinally in opposition to biasing springs. The arm assembly engages an interior tank surface at opposite sides of the channel to fix the location from which suspended equipment is hung. This isolates the suspension point for the equipment from dimensional changes that might occur in the channel supporting it along the upright riser pipe.

Abstract: A multi-level probe for sonic range measurements utilizes a plurality of parallel reflectors that each include an opening arranged coaxially about a beam of ultrasonic energy transmitted along a reference axis from an associated transducer. The opening in each reflector permits most of the sonic energy to pass to a subsequent reflective surface, while the periphery about the opening provides echo signals for determining physical conditions in the environment through which the sonic energy has passed. A novel system is used for determining physical conditions that are a function of time differences between signals from different reflectors, calculated with a highly efficient digital signal processing algorithm.

Abstract: An improved spectroscopic hygrometer includes a krypton-filled source tube that produces emissions at 123.58 nm for selective absorption by water vapor in a gaseous sample. The method for measuring water vapor density requires generation of ultraviolet radiation from a krypton source, receipt of the radiation by a detector, and passage of a gaseous sample through the radiation that is directed to the detector. The krypton radiation has been found to be an effective source for hygrometry purposes, and a practical improvement over prior hydrogen sources.