Pollution Source Detection

Portable detector solution for gas detection in septic tanks

The septic tank is a device for processing feces and filtering. The principle is that the solidified material is decomposed at the bottom of the pool, and the hydrated objects in the upper layer enter the pipeline and flow away, preventing the pipeline from clogging and providing solidified objects (feces and other garbage)with enough time to hydrolyze.

In recent years, news about the explosion of septic tanks has occurred frequently, and the reason for the explosion of septic tanks is nothing more than the production of toxic and harmful gases such as biogas, carbon dioxide, and hydrogen sulfide from the sludge deposited in the septic tanks. In an enclosed area with no air circulation, flammable gases such as methane or biogas may cause fire or even explosion if sparks are accidentally generated by external power.

In order to achieve the purpose of safety forecasting, there are two methods are popular now, one is a portable gas detector, and the other is a networked gas detector. Flammable gas alarms and toxic gas detectors use gas sensors independently developed by Winsen Technology, which have high detection accuracy and selectivity, large measurement range, low maintenance, good anti-interference to chemical poisons, suitable for gas monitoring in septic tanks.

Supporting solution for pollution source detection:

Portable solution for biogas sensor

gas sensors for Pollution Source Detection

The portable gas detector can use the ZE03 H2S sensor module of Winsen Technology, adopt the non-split infrared absorption principle and the electrochemical principle to measure the gas concentration of CH4 and CO2 generated in the biogas production process, and at the same time,analyzing the pH of biogas slurry with an external pH probe, which is easy and convenient to operate.

Ammonia sensor creates smart public toilet

The intelligentization of urban public facilities has become an important symbol of the construction of "smart cities". As a modern urban public place, public toilets have clean surrounding environment and fresh air in the toilets, which are an important civilization symbol of modern urban construction. It directly affects people's perception of the city.

ammonia sensor for Pollution Source Detection

Therefore, in order to comprehensively improve the management level of public toilets, establish a long-term management, build a modern new city and create intelligent public toilets in a "smart city"; realize intelligent remote management of public toilet flow monitoring, odor detection, toilet flow detection, automatic deodorization, etc., adopt the latest Internet of Things, cloud computing, etc. It realizes the perfect integration of sanitation public toilet management and intelligent technology. "Smart public toilets" can not only eliminate the unpleasant odor, but also provide a scientific and reasonable management method for the environmental sanitation of public toilets, making the city's sanitation public toilet management more efficient, intelligent and orderly.

ME3-NH3 ammonia gas sensor

ME3-NH3 ammonia gas sensor

Winsen Technology specializes in the development and production of public toilet odor sensors: ME3-NH3 ammonia gas sensor, MP-702 ammonia gas sensor, ZE03 ammonia gas module, temperature and humidity sensor and solutions, which can meet the needs of smart public toilet odor supervision, so as to realize the perfect combination of public toilet management and intelligent technology.

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Electrochemical NH3 Sensor ME3-NH3

ME3-NH3 electrochemical sensor detect gas concentration by measuring current based on the electrochemical principle, which utilizes the electrochemical oxidation process of target gas on the working electrode inside the electrolytic cell, the current produced in electrochemical reaction of the target gas are in direct proportion with its concentration while following Faraday law, then concentration of the gas could be get by measuring value of current.

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Electrochemical Integrated Gas Sensor ZE03

ZE03 is a general-purpose and high-performance electrochemical module. It uses three electrodes, electrochemical gas sensor and high-performance micro-processor. By installing different gas sensor, the module could detect relevant gas. It is with built-in temperature sensor to make temperature compensation, which makes it could detect the gas concentration accurately. It has the digital output and analog voltage output at the same time which facilities the usage and calibration and shorten the development period. It is a combination of mature electrochemical detection principle and sophisticated circuit design, to meet customers’ different detection needs.

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Flat Semiconductor NH3 Sensor MP-702

The MP-702 ammonia gas sensor adopts a multi-layer thick film manufacturing process. The heater and the metal oxide semiconductor gas sensing layer are respectively made on both sides of the micro Al2O3 ceramic substrate, and are packaged in a metal shell. When the detected gas exists in the ambient air, the conductivity of the sensor changes. The higher the concentration of the gas, the higher the conductivity of the sensor. This change in conductivity can be converted into an output signal corresponding to the gas concentration using a simple circuit.

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How to choose the right sensor for your project?

We have 17 sensor series, 200+ categories, and 300+ detection objects for gas detection. Such as CO, CO2, VOC, PM2.5, CH4, LPG and so on. In particular, we also have MEMS sensors. According to your industry application, gas principle, power consumption, accuracy, and range requirements, and we can select a specific model for you. You can also use the product filter below to choose a suitable product, or choose online serivce.

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The first six FAQs. Use the search bar above to reveal more!

How to Install and Place the Infrared Dust Sensor?

It must be installed vertically. Keep away from artificial air flow such as fans. When used in air purifiers, the front and rear of the fan cannot be installed. Optionally install it on one side of the shell, but keep vents on the shell to ensure that the external air can diffuse in.

Can the Two Voltages of Mq-7 Exist All the Time, or Do They Need to Be Powered Alternately? if It is an Alternate Power Supply, What is the Appropriate Power Supply Time?

It requires alternate power supply. Please check the information on the product manual. This sensor is powered by 1.5V and 5V alternately. The low temperature and low voltage (1.5V) state can detect CO, and the high voltage (5V) is the desorption process. The recommended 5V voltage duration is 60s, 1.5V voltage duration is 90s to alternately supply power. Since it is a desorption process at 5V, it is normal for the voltage to drop when CO is 150ppm.

What is the Difference Between Semiconductor Sensors and Electrochemical Sensors?

There is no good linear correspondence between the gas concentration and voltage of the semiconductor sensor, and it is generally only used for fixed-point calibration products; there is a good linear correspondence between the gas concentration and the output current of the electrochemical sensor, and can be made into quantitative detection products.
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