413 results about "Hygrometer" patented technology

A remote humidity monitor system for detecting a targeted object utilizes a humidity sensor to detect humidity and sends a result to a reader via the wireless communication device; a server can execute monitor management. The humidity sensor can be a mass hygrometer, an optical condensation dew-point hygrometer, a psychrometer (wet-and-dry bulb thermometer), a hair hygrometer, an electrolysis humidity sensor, a lithium chloride humidity sensor, an aluminum oxide humidity sensor, a high polymer humidity sensor, or an infrared hygrometer.

The invention discloses a device for testing characteristic curves and permeability coefficients of unsaturated coarse particle soil and water. A reversed filter is arranged at the bottom of a cylindrical rigid permeation column; six layers of compacted soil samples are arranged at the upper part of the reversed filter; a TDR (test data report) sensor, a tensiometer or a humidometer are buried at the same height on the same layer; pore pressure gauges are buried in the first layer and the sixth layer; the TDR sensor, and the tensiometer or the humidometer form 90 degrees; each pore pressure gauges and the tensiometer or the humidometer form 90 degrees; a waterhead stabilizer is externally connected with a water storage container and a water tank for providing a reference liquid level; the waterhead stabilizer is accessed into the reversed filter via a drainage valve; a top plate of the cylindrical rigid permeation column is connected with the drainage valve. Saturated ermeability coefficients of coarse particles can be obtained through the pore pressure gauges and the waterhead stabilizer after the sample is saturated; the change processes of of matric suctions and moisture contents of a soil body in each layer at different moments along with the time can be obtained through the corresponding tensiometer or the corresponding humidometer and the corresponding TDR sensor at the saturation, drainage and evaporation stages at the same time. Thus, mechanical parameters of the unsaturated coarse particle soil and water are obtained.

A preparation device of low-concentration gas with certain humidity consists of a capillary tube and a tee or two-way air-tight joint which are communicated with a carrier gas cylinder, a mass flow controller, a heating diffusion bottle, a humidity generating bottle and a gas mixing tank. The diffusion bottle is arranged in a heater, is communicated with the capillary tube by a capillary needle tube, and a diffusion gas control section is arranged with corresponding numbers and parameters according to the varieties and numbers of the prepared gas components. The gas mixing tank is provided with a hygrometer for real-time determination of the humidity of the prepared gas. The device of the invention adopts a diffusion-dilution type dynamic gas distribution method, can prepare the low-concentration gas with certain humidity, and is characterized by low cost, simple operation, low gas consumption, stable gas distribution, wide humidity regulation range, wide application, etc.

A dew point hygrometer for determining the dew point of a gas in which a displaceable transparent film is in contact with the gas and forms a condensation surface. The film is placed on a temperature control device controlling its temperature and an optic fiber, emits light on the film and reflected light is detected in another optic fiber, the two optical fibers being positioned at an angle with respect to the film. Condensation formed on the film changes the light transmitted by the film which is periodically displaced so that a new uncontaminated regions are exposed to the light.

A weather sensor system for gathering and transmitting weather related information. The system integrates information gathered from a barometer, temperature sensor, hygrometer, GPS, tilt sensor, and an anemometer. The anemometer assembly is a combined wind speed and direction sensor and radio antenna. The weather sensor data can be transmitted from a remote location and relay data to central collection point or network location.

A moisture meter (1) has a hand-held casing (2) with a digital microcontroller (50), LCD display (4), and a keypad (3). Spring-loaded contacts (6) contact material and allow capacitive impedance measurement via electrodes (5) and drive/pickup circuits (20). Also, a relative humidity probe (9) provides an input so that the processor generates both moisture contact near-surface measurements and also relative humidity measurements. This allows optimum analysis of material.

The invention discloses a verifying device and method for an online sulfur hexafluoride hygrometer. An air tank is connected with a verifying cabin through an air outlet pipeline; the air outlet pipeline is provided with a verifying inlet valve; the verifying cabin is connected with a circulating pump cabin through a pipeline; an exhaust pipeline of the circulating pump cabin is provided with a connecting valve, an exhaust valve and an exhaust flow meter in sequence; an outlet pipeline of the circulating pump cabin is connected with the air tank and is provided with an outlet valve; a diaphragm pump is arranged in the circulating pump cabin; the circulating pump cabin is provided with a circulating pressure gauge; the verifying cabin is provided with an interface for connecting a verifiedhumidity sensor; the air tank is provided with a pressure gauge and an air inlet pipe; the air inlet pipe is provided with an air inlet valve; a vacuum pump is connected with the air tank through a vacuumizing pipeline; and the vacuumizing pipeline is provided with a vacuum pump air inlet valve. By adopting the device, the online sulfur hexafluoride hygrometer can be compared and measured under the conditions of different gas pressures and different temperatures, and the accuracy of the online hygrometer can be remarkably enhanced.

The invention discloses a microprobe type hygrometer based on a Fabry-Perot interferometer and a manufacturing method thereof; the microprobe type hygrometer comprises a general mono-mode optical fiber, a large-core diameter hollow-core optical fiber, a big numerical value bore diameter multi-mode photonic crystal optical fiber which are welded and fixed in succession; the hollow core of the large-core diameter hollow-core optical fiber is internally filled with hydrogel stuffing; the length of the big numerical value bore diameter multi-mode photonic crystal optical fiber is less than that of the large-core diameter hollow-core optical fiber; and an air hole on an outer cladding of an exposed end of the big numerical value bore diameter multi-mode photonic crystal optical fiber forms a through hole. The invention also discloses the manufacturing method for the hygrometer. The invention has the beneficial technical effects that the novel hygrometer is simple and convenient to operate, better in measurement accuracy, and small and exquisite in volume, and has wide application range.

A hygrometer and dew-point instrument is provided that is structurally simple while reducing the workload during maintenance. The hygrometer measures relative humidity of a measurement space, and has a main body that encapsulates a working fluid therein and causes a heat-pipe phenomenon. The main body is disposed across the measurement space and an external space spaced from the measurement space by a heat-insulating part and has a temperature lower than the measurement space. A first temperature deriving part derives the temperature of the main body in a section where the working fluid evaporates. A space temperature detecting unit detects the temperature of the measurement space. A computation unit calculate relative humidity of the measurement space based on the temperature of the main body derived by the first temperature deriving part and the temperature of the measurement space detected by the space temperature detecting unit.

The invention discloses a hygrothermograph node monitoring system and a hygrothermograph node monitoring method based on the zigbee technology, and belongs to the technical field of indoor environment wireless detection. The system comprises a voltage sensing modulation circuit, a capacitive sensing modulation circuit, a digital sensing circuit, a wireless processor, a liquid crystal display module, a USB (universal serial bus) to serial port circuit and a keyboard, wherein the outputs of the voltage sensing modulation circuit, the capacitive sensing modulation circuit and the digital sensing circuit are respectively connected with the wireless processor, and the humidity detection results are obtained through data merging processing and are sent to the liquid crystal display module and the USB to serial port circuit to be output. A plurality of sensors are adopted for measuring the humidity, the precision and the reliability of the humidity detection are improved. The CC2530 wireless processor supporting the ZigBee technology is adopted to be used as a main control chip to form a temperature and humidity sensor node, a wireless sensor network is used for networking, and the system and the method have the characteristics that the communication line connection is not needed, the networking is convenient, the precision is high, and the like.

The invention discloses a system and a method for testing the catalyst dehydrogenation performance, and belongs to the field of catalytic reaction engineering. The system comprises a hydrogen gas cylinder, a pressure reducing valve, a mass flowmeter, a check valve, an air compressor, a buffer tank, a first electric control valve, a first vortex precession flowmeter, a mixed gas distribution pipe, a catalytic reactor, a second electric control valve, a second vortex precession flowmeter, a first pressure transmitter, a first thermoelectric couple, a first hygrometer, a second pressure transmitter, a second thermoelectric couple, a second hygrometer and a data acquisition and control system. The method is characterized in that the variation of temperatures, pressures, hydrogen contents and relative humidity at an inlet and an outlet of the catalytic reactor along with time is recorded through the data acquisition and control system. The system and the method, disclosed by the invention, can simulate the design basis accident state of a nuclear power station containment accurately.

A cooled mirror dew-point hygrometer includes a thermoelectric cooling element, mirror, light-emitting unit, light-receiving unit, temperature detector, dew-point increase detector, and control unit. The control unit forcibly supplies a current to the thermoelectric cooling element in a direction reverse to a positive direction when the dew-point increase detector detects a rise in dew point.

The invention discloses a tritium gas flow generator system with constant concentration and a method thereof. The tritium gas flow generator system comprises a closed loop circuit in which a tritium gas flow generator, a monitor for to-be-detected tritium gas and a tritium gas flow circulation pump are installed sequentially. The closed loop circuit is also provided with a temperature control unit matched with the tritium gas flow generator, an inlet end and an outlet end of the temperature control unit are both provided with a temperature sensor. An inlet end and an outlet end of the tritium gas circulation pump are both provided with a pressure sensor. A hygrometer is arranged between the temperature control unit and the monitor for to-be-detected tritium gas, and a nitrogen reservoir in communication with the tritium gas flow generator is also included for supplying the nitrogen reservoir with dry nitrogen. The tritium gas flow generator system achieves value traceability of a gas-borne tritium monitor, realizes accurate calibration of the gas-borne tritium monitor, and achieves gas-borne tritium monitoring of large-scale nuclear power devices, military isotope production reactors, military isotope content test sites, and military isotope packaging use sites.

The present disclosure relates to a thermo-hygrometer and method of controlling the thermo-hygrometer for adjusting an indoor environment to a target temperature or humidity. The thermo-hygrometer of the present disclosure may control other home appliances using an Internet-of-thing environment via a 5G communication network, and may estimate a control method for other home appliances using machine learning of artificial intelligence. The thermo-hygrometer for adjusting an indoor environment according to an embodiment of the present disclosure may include a sensor for detecting at least one among a temperature and a humidity, a communicator for communicating with an external device, a memory for storing information about at least a portion of home appliances arranged indoors, and a controller for generating a control signal for controlling at least a portion of the home appliances based on at least information about the temperature and humidity detected by the sensor.

The invention discloses a moisture-proof and condensation-proof control method for an indoor station. The moisture-proof and condensation-proof control method comprises the steps of selecting an indoor temperature and humidity control mode, and configuring an indoor temperature and humidity regulation-control range according to a season and the temperature and humidity control mode; acquiring indoor temperature and humidity, outdoor temperature and humidity, a water logging opening-closing state and an access opening-closing state of the indoor station; comparing the acquired outdoor temperature and humidity with a local air dew point hygrometer, looking up a dew point temperature, comparing the acquired indoor temperature and humidity with the dew point temperature, and recording a comparison result every time; and starting a dehumidifier to dehumidify while judging that the indoor temperature achieves the dew point temperature or judging that the indoor temperature has a trend of approaching to the dew point temperature by virtue of recent multiple comparison results, wherein an air conditioner automatically heats or refrigerates according to the season to break the dew point temperature, thereby preventing indoor condensation. The moisture-proof and condensation-proof control method disclosed by the invention is moisture-proof and condensation-proof, and capable of furthest saving energy, guaranteeing safe and normal long-time running of electrical equipment, and lowering a maintenance cost.

The invention discloses a damp-proof bearing storage box which comprises a box body, a box cover and uprights. The box cover is covered on the box body, guard rings are arranged on the edges of the box cover, the upper surfaces of the guard rings incline outward and downward, a plurality of wheels are arranged at the bottom of the box body, a breather pipe is arranged on the side wall of the box body, a dry box and a hygrometer are arranged on the inner wall of the box body, a plurality of water outlet holes are formed in the inner wall of the box body bottom, a plurality of support bosses are arranged at the bottom inside the box body, threaded holes are formed in the support bosses, a check ring is arranged at the bottom of each upright, a plurality of through holes are formed in each check ring, a screw is connected with the lower surface of each check ring, and each screw is screwed in the corresponding threaded hole. According to the damp-proof bearing storage box, the uprights with check rings are arranged in the box body, so that bearings can be arranged in order, and the surface is not prone to adhering water drops.

The invention discloses a humidity-controllable static gas-sensitive test device and method, relates to a gas-sensitive test device and method, and aims to solve the problems of bad humidity controllability, difficult construction, and bad stability in the conventional gas-sensitive test devices and methods. The device comprises a humidity control system, the humidity control system is provided with a gas inlet, which is used to introduce carrier gas, the outlet of the humidity control system is communicated to No.1 gas inlet of a gas chamber through a No.1 gas valve, a gas-sensitive element, a fan, a thermometer and hygrometer are arranged in the gas chamber, the fan is used to mix the gas in the gas chamber, the signal output terminal of the gas-sensitive element is connected to the digital signal input terminal of a data collector, the digital signal output terminal of the data collector is connected to the digital signal input terminal of a computer, a No.1 temperature constant device is used to control the temperate of the gas chamber, and the gas chamber is provided with a No.2 gas inlet, which is used to introduce a gas sample to be tested. The device and method are mainly used to carry out gas-sensitivity tests on inorganic gas.

The present invention discloses a device and a method for microleak identification of a coal-powder boiler or a circulating fluidized bedboiler. The device comprises a hearth flue, a dust remover, aninduced draft fan, a chimney, a computer, trepanning measurement points, a thermocouple, a hygrometer and a PLC system. The two sides of the heating surface in the hearth flue are provided with the plurality of trepanning measurement points, the trepanning measurement points are internally provided with protective casings; the thermocouple and the hygrometer are respectively arranged in the protective casings to measure the temperatures and the humidities of different heating surfaces in real time and transmit the measurement values into the PLC system through cables; the PLC system is connected with the computer, the PLC system is configured for data analysis and processing, an analysis result can be displayed on the computer in a curve mode, if the humidity curve trend of a certain pointor the humidity difference of some two points reaches a threshold value, leakage alarm is emitted, and the positions of the heating surfaces are confirmed to perform furnace shutdown maintenance. Thedevice and the method for microleak identification of a coal-powder boiler or a circulating fluidized bedboiler can discover problems and can emit alarm when the leakage amount is little, and can discover the preliminary position of the leak surface.

The invention relates to an LNG leakage water curtain restraint experiment device. The LNG leakage water curtain restraint experiment device mainly solves the problem that an LNG leakage water curtain restraint experiment device is not available yet in the prior art. The LNG leakage water curtain restraint experiment device comprises a discharging system, a water curtain system, a data acquisition system and a control system, wherein the discharging system comprises an LNG storage tank, an LNG discharging tank, an inert gas cylinder and a discharging spray head, the water curtain system comprises a water inlet pipeline and a water curtain nozzle, and the data acquisition system comprises a signal processor, a thermocouple, a methane concentration detector, an anemometer, a hygrometer and a high-speed camera. By the adoption of the LNG leakage water curtain restraint experiment device, the problem that LNG leakage water curtain restraint experiment device is not available yet in the prior art is well solved. The LNG leakage water curtain restraint experiment device can be applied to an LNG leakage water curtain restraint experiment.

The invention provides a method for assessing efficiency of an underground powerhouse ventilating and air conditioning system. Thermometers, hygrometers and air volume monitors are arranged outside an underground powerhouse and in an air inlet duct opening and an air outlet duct opening of the ventilating and air conditioning system. The method comprises the following steps that the initial temperature and the initial humidity are measured, and the initial air enthalpy is calculated; the outlet temperature and the outlet humidity D2 are measured, and the outlet air enthalpy of the ventilating and air conditioning system is calculated; the initial air volume and the outlet air volume are measured, and the ventilation heat dissipation quantity is calculated; the refrigerating capacity and total consumed power of a refrigerating unit are obtained; the efficiency of the ventilating and air conditioning system is judged. According to the method, the designing and operating energy consumption level of the ventilating and air conditioning system can be comprehensively judged, it can be dynamically and comprehensively reflected that the ventilating and air conditioning system can adapt to the change of environment heat, a value basis is provided for judging whether the arrangement of ventilating and air conditioning systems of different underground powerhouse is reasonable or not and whether operating is achieved in an energy-saving mode or not, and the theoretical foundation and a mathematical model are provided for making system design and energy-saving targets for operation management, assessing system energy saving level and making energy saving strategies.

The invention discloses a multifunctional dryer, which comprises a combustible gas supply device, a hot air chamber and an oven body. A combustion chamber and a heat dissipation pipeline are arranged in the hot air chamber, the top of the hot air chamber is provided with a first eddy fan for conveying outside air to the hot air chamber, and a hot air outlet is formed below the side wall of the hot air chamber. The heat dissipation pipeline is arranged below the first eddy fan, one end of the heat dissipation pipeline is communicated with the combustion chamber, and the other end of the heat dissipation pipeline is communicated with an exhaust pipe. A grid supporting plate for supporting an agricultural product, a cold air axial flow fan positioned between the grid supporting plate and the bottom of the oven body and a condensation plate positioned between the grid supporting plate and the top of the oven body are arranged in the oven body; the part, positioned between the grid supporting plate and the bottom of the oven body, of the side wall of the oven body is provided with a hot air inlet; and the top of the oven body is provided with a dehumidifying axial flow fan for conveying wet airflow in the oven body to the outside, and the top of the oven body is also provided with a hygrometer and a thermometer.

The invention discloses an OH free radical standard gas generation system, comprising a synthetic gas source, a dry purifier communicated with the synthetic gas source; the synthetic gas comprises mixed high purity nitrogen and high purity oxygen in definite proportion; the system further comprises a quartz tube internally provided with a low pressure mercury lamp; a dew-point hygrometer and an O3 analyzer are respectively accessed to the gas outlet of the quartz tube through pipelines; the middle part of one pipeline outputting synthetic gas is accessed to a mass flowmeter; and the middle part of the other pipeline outputting synthetic gas is accessed the other mass flowmeter and water vapor generator in sequence.