The technology relates to transportable gas detector and associated methods. The transportable gas detector comprises a gas sensor housed within a chamber and configured to detect gas in the environment surrounding the chamber. To test the gas sensor, test gas is pumped from a gas source directly into the chamber from the one or more inlets.

A monitoring and gas detection information notification system includes monitoring devices and a cloud data processing device. The monitoring devices are respectively disposed at corresponding fixed positions, each of the monitoring devices includes a monitoring module and an actuator-sensor module. The monitoring module captures an image and converts the image into an image data. The actuator-sensor module is disposed in the monitoring module and includes one or more actuators for guiding a gas into the monitoring module and includes one or more sensors for generating a gas detecting data. The cloud data processing device stores and intelligently analyzes the image data and the gas detecting data to generate a processed data, and the cloud data processing device transmits the processed data to a notification processing system so as to conduct a notification of monitoring information and gas detecting information.

A mobile gas monitor is presented. In accordance with some embodiments, a mobile gas monitor includes a gas sensor; a mobile device coupled to the gas sensor, the mobile device executing instructions to: read data from the gas sensor; provide calibration; and provide calibrated concentrations based on the data from the gas sensor.

A system that includes a gas sensor, a fresh air flow controller, a sample flow controller, and a system controller. The fresh air flow controller is configured to deliver fresh air to the gas sensor. The sample flow controller is configured to deliver a sample to the gas sensor. The system controller has a processor connected to memory storing instructions that are executable by the processor. When executed, the instructions cause the processor to determine an intermix ratio of the sample to the fresh air, instruct the fresh air flow controller and the sample flow controller to deliver the fresh air and the sample, respectively, to the gas sensor in accordance with the intermix ratio, and receive a sensor reading from the gas sensor after the fresh air flow controller and the sample flow controller have adjusted the fresh air and the sample, respectively.

The present disclosure relates to a sensor device including a gas sensor disposed on a first substrate, a heating element disposed within the first substrate so that the gas sensor overlaps the heating element, a processor operatively coupled to the gas sensor and the heating element, and a memory storing a program to be executed by the processor. The gas sensor is configured to measure first sensor data points and second sensor data points. The program includes instructions for performing the following steps in real-time: recording first resistance values and second resistance values of the heating element; adjusting the second sensor data points using the first sensor data points, the first resistance values, and the second resistance values to obtain corrected sensor data points; and determining sensed values from the corrected sensor data points.

The monitoring breathalyzer has an alcohol sensor, a processing unit or processor, and a screen. The processing unit determines the accuracy of the breathalyzer using the user's body as a simulator. In monitoring mode, the processing unit receives a BAC measurement from the alcohol sensor based on the breath sample provided by the user at a sample time and determines a reference point from the BAC measurement. The sample time is determined based on a time to a predetermined calibration point from a drink start time.

A sensor device includes a gas sensor disposed on a first substrate, a heating element disposed within the first substrate, a processor operatively coupled to the gas sensor and the heating element, and a memory storing a program to be executed by the processor. The gas sensor is configured to measure first sensor data points and second sensor data points. The gas sensor overlaps the heating element. The program includes instructions for performing the following steps in real-time: recording first resistance values and second resistance values of the heating element; adjusting the second sensor data points using the first sensor data points, the first resistance values, and the second resistance values to obtain corrected sensor data points; and determining sensed values from the corrected sensor data points.

This invention is to collectively manage the timing to replace the multiple gas cylinders, and is a cylinder management system that manages multiple gas cylinders that supply a utility gas of a calibration gas to multiple gas analysis device and that comprises multiple pressure sensors that that detect a pressure of each of the multiple gas cylinders, and a management device that calculates a cylinder gas residual quantity in each gas cylinder based on the pressure detected by each pressure sensor and manages the timing to replace each gas cylinder.

Method for calibrating a gas chromatograph to render the calibration of the gas chromatograph more error-proof, wherein relative response factors determined during the calibration are compared with universal relative response factors contained in the memory and typical of the detectors, where an error message is generated and output if the relative response factors determined in the calibration deviate beyond a predetermined degree from the universal relative response factors, and where the universal relative response factors are determined and provided for different components by the manufacturer of the detectors, for instance.

Described are systems and methods for compensating long term sensitivity drift of catalytic type electrochemical gas sensors used in systems for delivering therapeutic nitric oxide (NO) gas to a patient by compensating for drift that may be specific to the sensors atypical use in systems for delivering therapeutic nitric oxide gas to a patient. In at least some instances, the long term sensitivity drift of catalytic type electrochemical gas sensors can be addressed using calibration schedules, which can factor in the absolute change in set dose of NO being delivered to the patient that can drive one or more baseline calibrations. The calibration schedules can be used reduce the amount of times the sensor goes offline. Systems and methods described may factor in in actions occurring at the delivery system and/or aspects of the surrounding environment, prior to performing a baseline calibration, and may postpone the calibration and/or rejected using the sensor's output for the calibration.