Gain independent reference channel measurement system and method. A method of making robust, stable measurements, in a variety of different applications is disclosed. More specifically, this disclosure describes systems and methods relating to performing gain independent reference channel measurements by making two phase measurements of a device under test. Mathematically, the measurements are combined and many common mode parameters drop out. The result yields an analysis of a device under test analysis which mitigated errors, predominately arising from environmental variations and changes in circuit behavior stemming from swings in signal input.

A flow control device includes a flow shield defining a volume and a plurality of shield openings of the flow shield arranged such that gas entering the volume must pass through at least one of the plurality of shield openings. The flow control device also includes a flow restrictor to define an opening for the gas exiting the volume.

A receiver (10) according to the present disclosure includes: a detection unit (11) including a sensor configured to receive a first optical signal of a wavelength included in an absorption band of water molecules and a second optical signal of a wavelength included in an absorption band of carbon dioxide molecules, a signal processing unit (12) configured to calculate a water vapor concentration and a carbon dioxide concentration from changes of intensities of the first and second optical signals, and a determination unit (13) configured to determine whether or not there is a fire that is caused by alcohol combustion based on the water vapor concentration and the carbon dioxide concentration.

The present invention is an illumination assembly (10) for providing illumination in an underwater medium which at least partially absorbs light. The subject matter illumination assembly (10) is characterized by comprising a light sensing unit (300) having at least one fluid chamber (420), pluralities of fluid intake openings (421), at least one light source (330) positioned inside the fluid chamber (420) and which emits light in at least one first spectrum, at least one photo-diode (310) in a manner facing said light source (330) and which generates signal related to the distribution in said first spectrum and optical intensity of the wavelengths of the light, which is emitted by the light source (330) and which passes through water; at least one LED array (150) which can emit light in the first spectrum; a control unit (120) which determines the operational setting of LED array (150) according to received signal.

The present disclosure relates to a measuring apparatus for analyzing a measuring medium. The measuring apparatus includes a probe housing, a radiation source, and coupling and decoupling optics. The optics have a measurement window in the probe housing to direct radiation of the radiation source into a measuring region outside the probe housing and including the measuring medium, and to block measuring radiation from the measuring region. Via the optics, a receiving device detects measuring radiation and generates output data. An additional physical or chemical sensor is integrated into the probe housing and is designed to detect a measurand of the measuring medium and output measurement signals. An electronic measurement unit is configured to collect and process the output data of the receiving device and the measurement signals of the additional physical or chemical sensor.

The present application relates generally to a suction regulator device and, more specifically, to a method and system for signaling responsive to sensing that the suction regulator device has become contaminated.

Embodiments relate generally to systems and methods for detecting particulate matter in the air. A particulate matter sensor may comprise an airflow channel; a light source configured to pass light through the airflow channel; an airflow generator configured to generate airflow into the airflow channel; a waveguide configured to direct light from the light source after it passes through the airflow channel and scatters off of particulate matter within the airflow channel; a photodiode configured to receive light scattered by the waveguide; and a computing device coupled to the photodiode having a processor and a memory storing instructions which, when executed by the processor, determines a mass concentration of particles in the airflow channel based on an output of the photodiode.

Described herein is a sensor for a virtually simultaneous measurement of transmission and/or forward scattering and/or remission and for a simultaneous measurement of the transmission and forward scattering or the transmission and remission of a liquid sample. Further described herein is a method for a virtually simultaneous measurement of transmission and/or forward scattering and/or remission and for a simultaneous measurement of the transmission and forward scattering or the transmission and remission of a liquid sample using a sensor according to the invention. Further described herein is a method for using the sensor according to the invention in order to determine the color properties of painting agents such as lacquers, dyes, pastes, and pigments or dilutions thereof.

An apparatus for measuring a water-quality parameter of a liquid sample. The apparatus includes: at least one water-quality parameter sensor selected from the group containing: a chlorine sensor; a turbidity sensor; a conductivity sensor; a pH sensor; a temperature sensor; a pressure sensor; a redox sensor; and a flow sensor; a controller configured to control operation between an active mode, a sleep mode, and a turbo-mode; and an energy source management module associated with the controller. The management module manages voltage in the controller and provides for extended power and low electricity consumption.

Optical tomography arrangements are disclosed for performing optical tomography on the transparent or translucent contents of individual microplate wells comprising a light emitting array having a plurality of light emitting elements, a sample module, and a light sensing array including a plurality of light sensing elements, wherein the light sensing array is configured to sense light emitted from the light emitting array which has passed through the sample module. The light emitting elements can comprise light emitting diodes (LEDs), organic light emitting diodes (OLEDs), organic light emitting transistors (OLETs), and/or other optoelectronic devices. The light sensing array can comprise organic light sensing devices, photodiodes, phototransistors, CMOS photodetectors, or charge-coupled devices (CCDs). The light emitting array can be flat or curved, and the light sensing array can be flat or curved. The collection of measurement values can be overspecified, and a generalized inverse operation can provide solutions rendering computational tomography data.