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Henan Weiguo Intelligent Technology Co., Ltd. established in 2017, is an innovative technology company in China and is the pillar enterprise of the healthy home business division of Hanwei Electronics (stock number: 300007). Focusing on the complete chain of design, R& D, production and sales of smoke alarm, gas alarm, air quality monitor and alcohol tester, we strive to supply air health service for the human beings in the world.
Pay attention to frequent calibration and testing Similar to other analysis and detection instruments, the toxic and harmful gas detectors complete the measurement with relative comparison method: firstly, a zero gas and a standard concentration gas is used to calibrate the instrument, then a standard curve is obtained to be stored in the instrument. When measuring, the instrument compares the electrical signals produced by the detected gas concentration to the electrical signals of the standard concentration, and then calculates the accurate gas concentration value. Therefore, zero-calibration shall be carried out to the instrument at any time, and regular calibration of instrument is necessary to ensure the accuracy of instrument measurement. It needs to be explained that: many gas detectors can replace detection sensors at present, but it does not mean that a detector can be equipped with different detector probes at any time. Whenever the probe is replaced, the instrument must be calibrated again besides the activation time of sensor. Moreover, it is suggested that the instrument should be conducted with response test by standard gas before using, so as to ensure that the instrument really plays a protective role. Monitoring interference among different sensors Generally, each sensor corresponds...
Flame Detectors operate in the harshest environmental conditions and are self-contained stand-alone devices designed for direct connection to control and alarm systems or automatic fire extinguishing systems. align=”center”
A breathalyzer or breathalyser (a portmanteau of breath and analyzer/analyser) is a device for measuring breath alcohol content (BrAC). The name is a genericized trademark of the Breathalyzer brand name of instruments developed by inventor Robert Frank Borkenstein in the 1950s. Origins Research into the possibilities of using breath to test for alcohol in a person’s body dates as far back as 1874, when Francis E. Anstie made the observation that small amounts of alcohol were excreted in breath. In 1927, Emil Bogen produced a paper on breath analysis. He collected air in a football bladder and then tested this air for traces of alcohol, discovering that the alcohol content of 2 litres of expired air was a little greater than that of 1 cc of urine. Also in 1927, a Chicago chemist, William Duncan McNally, invented a breathalyzer in which the breath moving through chemicals in water would change color. One suggested use for his invention was for housewives to test whether their husbands had been drinking.In December 1927, in a case in Marlborough, England, Dr. Gorsky, a police surgeon, asked a suspect to inflate a football bladder with his breath. Since the 2 liters of the man’s breath...
The main function of a gas detector is to detect the existence and concentration of nearby gases. Gas detectors can be divided into two categories, namely the portable gas detector and fixed gas detector. The two categories contain different types of products. Portable gas detectors can be further divided into pump-suction gas detectors and diffusion gas detectors. Pump-suction gas detectors and diffusion gas detectors have the same detection principle, which is to detect the sample gas with sensors and then convert to corresponding value through the circuit magnification to display on the screen. Flammable gases are usually detected with the catalytic combustion sensors while the toxic gases are detected by electrochemical sensors. Difference between the pump-suction gas detectors and diffusion gas detectors lies in the sampling method. Diffusion gas detector introduces gases into the gas detector along with the flow of air in the detection area, thus it can detect continuously, real-time and accurately whether there’s toxic and harmful substances in the air. Generally, the diffusion gas detector is used in open occasions, such as open workshops. In detection, the air in the detection area flows slowly into the diffusion gas detector and then the detector completes...
A smoke detector is a critical device to have in any living or working space, as it can promptly sense and alert residents to the presence of smoke, fire, or high temperatures. Over the years, smoke detectors have seen substantial improvements in functionality, connectivity, and responsiveness attributed to advances in technology. In this essay, we will explore a range of smoke detectors that vary in their mode of operation and communication methods, namely standalone, Wi-Fi connected, Tuya connected, Narrowband Internet of Things (NB-IoT), and Cellular Automata Technology (CAT).
Fixed Gas Leak Detector Product Description This series of gas detection transmitters adopt the most advanced ultra-large scale integrated circuit technology and are designed by the international standard intelligent technology level. It is a completely intelligent gas detection transmitter designed by digital and analog hybrid communication technology. The intelligent gas detection transmitter has advanced technology, excellent performance, high stability, communication and self-diagnosis functions, easy installation and maintenance, and the advanced performance of typical intelligent field monitoring instruments has been fully demonstrated, which greatly meets the needs of industry. On-site safety monitoring requires high reliability of equipment. It is widely used in petroleum, chemical industry, metallurgy, refining, gas transmission and distribution, biochemical medicine and other industries. The instrument is compatible with various control alarms, PLC, DCS and other control systems, which can realize remote detection, control and alarm.
Monitor and Detector sensor Smoke sensor: Fire prevention is achieved by monitoring the concentration of smoke. Temperature sensor: to determine whether a fire occurs or not by monitoring changes in temperature. Gas sensor: The gases produced by combustion that can be used as fire alarms mainly include CO, CO2, CH4, and H2, which can be used as the basis for fire detection. In a large area of forest, it is necessary to use video surveillance. With the camera, it can monitor the surrounding environment in 360° without dead angle, so as to achieve remote observation and timely detection of small flames, so that managers can quickly block the fire source and prevent the spread. If the video character stacker is selected, the monitored meteorological data can also be synchronized to the monitoring screen, which is more clear at a glance. When managers face emergencies such as someone breaking into a dangerous forest area, they can also use the camera’s voice calling function to remind and warn
Gas detectors are devices designed to detect the presence of combustible, toxic, or other types of gases in the air. Combustible gas detectors, in particular, are used to identify the presence of flammable gases such as methane, propane, and hydrogen. These detectors are commonly used in industrial settings, where the presence of flammable gases can pose a serious risk to workers and facilities. A combustible gas detector works by measuring the concentration of gas in the air using sensors. These sensors can detect a variety of different gases, and are typically calibrated to identify the specific gas or gases of concern in a given environment. When the sensor detects a gas concentration above a certain threshold, it sends an alarm signal to alert workers or trigger an automatic shutdown of the system. There are several types of combustible gas detectors available on the market today. One common type is the catalytic bead sensor, which works by heating a catalyst that reacts with the gas, causing a change in electrical resistance. Another type is the infrared sensor, which uses infrared light to detect the presence of gas molecules in the air. In addition to their use in industrial settings, combustible gas...
Toxic Gas Detectors: Keeping People Safe Toxic gas detectors are essential devices for ensuring the safety of people in various industries. These detectors are designed to detect and alert users to the presence of harmful gases that may be present in the air, such as carbon monoxide, hydrogen sulfide, and methane. There are several types of toxic gas detectors available, including fixed and portable models. Fixed detectors are typically installed in a specific location and are designed to continuously monitor the area for the presence of toxic gases. Portable detectors, on the other hand, can be carried by individuals and are used for spot checks in different locations. Modern toxic gas detectors use advanced sensor technologies that can detect even low levels of toxic gases. They also come with advanced features such as data logging, wireless connectivity, and smartphone compatibility, which make it easier for users to monitor and manage the device. Toxic gas detectors are commonly used in various industries, including oil and gas, manufacturing, mining, and agriculture. They are also used in residential settings to detect the presence of carbon monoxide, which can be emitted by faulty heating systems or gas appliances. “Ensuring the safety of our workers...
Three New Infrared Flame Detectors Released Infrared flame detectors have become an essential tool for fire safety in various industries. To meet the growing demand for reliable and accurate flame detection, a leading fire safety company has released three new infrared flame detectors. The first model is a high-sensitivity infrared flame detector that can detect flames from up to 100 feet away. It has a fast response time and can detect flames even in the presence of sunlight or other sources of infrared radiation. The second model is a multi-spectrum infrared flame detector that can detect flames using multiple wavelengths of light. This allows it to detect flames that may be invisible to other types of detectors. It also has a high level of immunity to false alarms. The third model is a combined infrared and ultraviolet flame detector. This detector uses both infrared and ultraviolet sensors to provide an extra layer of protection against false alarms and to ensure reliable detection in various environments. All three detectors are designed for easy installation and maintenance. They are suitable for use in a wide range of applications, including petrochemical plants, power generation facilities, and industrial manufacturing facilities. “We are excited to...
Applications of Ultraviolet Flame Detectors Ultraviolet flame detectors are devices that are used to detect flames and fires by sensing the ultraviolet radiation that is emitted by the flames. They are particularly useful in environments where there is a high risk of fires, such as industrial settings, chemical plants, and oil refineries. One common application of ultraviolet flame detectors is in the oil and gas industry. In this industry, the detectors are used to monitor the flames in pipelines, storage tanks, and processing equipment. They can detect flames that are invisible to the naked eye, such as those caused by gas leaks or ignition of flammable liquids. Another application of ultraviolet flame detectors is in the aerospace industry. They are used to detect fires on aircraft, particularly in the engine compartments where fires can quickly spread and cause significant damage. The detectors can quickly identify the location of the fire, allowing the crew to take immediate action to contain it and prevent it from spreading. Ultraviolet flame detectors are also used in commercial kitchens, where fires can be caused by grease buildup or overheating equipment. The detectors can quickly detect any flames and alert the staff to take appropriate action,...
China Develops New Alcohol Breathalyzer Device Chinese researchers have developed a new alcohol breathalyzer device that is more accurate and easier to use than existing models. The device, which is smaller than a smartphone, uses advanced sensors to measure the amount of alcohol in a person’s breath. The new device is particularly useful for law enforcement officers who need to test drivers for alcohol consumption. It can detect alcohol levels as low as 0.001%, which is important for ensuring accurate results. In addition, the device has a fast response time and can provide results in just a few seconds. The researchers say that the device is also more user-friendly than existing models. It has a simple interface with easy-to-read results, and it can be operated with just one hand. The device also has a long battery life and can be charged using a standard USB cable. The new alcohol breathalyzer device has already been tested by law enforcement agencies in several cities in China, and it has received positive feedback. The researchers say that they are working on further improvements to the device, including adding more advanced features such as facial recognition and voice recognition. The development of this new...
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