Gas detector ABS&PC case durable buttons in stock
Basic Info
Model No.: SA-M202 Series
Product Description
The Gas detector can detect hydrogen sulfide, carbon monoxide, oxygen, sulfur dioxide, phosphine, ammonia, nitrogen dioxide, hydrogen cyanide, chlorine, chlorine dioxide, ozone and combustible gas and other gases, widely used in petrochemical, coal, metallurgy, chemical industry, municipal gas, environmental monitoring, and other places on-site detection.The measurement needs of special occasions can be realized.Gas concentration detection or leakage detection can be carried out on the tunnel, pipeline, tank and confined space.
The Gas detector maintenance
1. Check the gas flow rate, usually 30/h, and too much or too little flow will greatly affect the analyzer results
2. Replace the filter paper: stop the pump and drain the filter tank
3. Check whether there is air leakage in the gas path system.Whether the diaphragm of the sobbing pump is damaged, whether the sealing ring of the sampling probe is broken, whether the four-way valve and condensing vapor are damaged, etc
4. The sampling probe shall be cleaned and the sampling hole pipe shall be dredged
5. Check whether the condenser is working normally and the temperature is usually within the range of 3 degrees Celsius
6. Check the measuring room to see if it is dirty and clean in time.
The service life of gas detector depends on its main component - sensor.
We also know that can't be a kind of sensor can detect all of the gas, meet the requirements of all, gas and all kinds of environment using sensor, which can be roughly divided into: used for detection of toxic gases
A concentration sensor and a sensor for detecting explosive concentrations of combustible gases.
Used to measure the concentration of toxic gas sensors are mostly electrochemical sensor, it is working on the basis of the principle of electrochemical sensors, mainly affect the life of the electrolyte, the general sensors in 2 ~ 3 years later, the electrolysis
The liquid can no longer work properly, so the service life of the electrochemical sensor is 2 to 3 years.
Most of the sensors used to detect the concentration of combustible gases are catalytic combustion sensors, which have a service life of 3-5 years.
The choose and buy of The Gas detector
1) confirm the type and concentration range of gas to be detected:
Each production department encounters a different kind of gas.Consider all possible scenarios when selecting a gas detector.If methane and other less toxic alkanes are in the majority, the LEL detector is the most suitable.This is not only because LEL detector has simple principle and wide application, but also has the characteristics of convenient maintenance and calibration.If there are toxic gases such as carbon monoxide and hydrogen sulfide, a special gas detector must be selected to ensure the safety of workers.If more is organic toxic or harmful gases, considering its personnel may cause poisoning concentration is low, such as aromatic hydrocarbon, halogenated hydrocarbon, ammonia (amine), ether, alcohol, fat, etc., should choose the light of the previous chapter ionization detector, and never use LEL detector to deal with, because this may lead to loss of life.
If the gas type covers the above several types of gases, a compound gas detector may achieve twice the efficiency with half the effort.
2) determine usage:
Different industrial environment, the choice of gas detector is also different.
A) fixed gas detector:
This is the use of more detectors on industrial installations and in the production process.It can be installed at a specific detection point to detect a specific gas leak.Implement Yang fixed detector is commonly two postures, consists of sensor and transmitting test head for installation in test site, the integrated circuit, power supply and display alarm device of secondary instrument for installation in a safe place, easy to monitor.Its detection principle is the same as described in the previous section, but it is more suitable for the continuous and long-term stability required by fixed detection in terms of technology and technology.They also want to choose, and according to the types of the gas concentration at the same time also notice them installed in a certain gas is most likely to leak parts, such as to choose according to the proportion of the gas sensors installed the height of the most effective and so on.
B) portable gas detector:
Because portable instrument is easy to operate and small in size, it can be carried to different parts of production. Yiyang electrochemical detector is powered by alkaline battery and can be used for 1000 hours continuously.New LEL detector, PID, and compound instruments use rechargeable batteries (some nimh or lithium ion battery has no memory), that they can generally work almost 12 hours in a row, so, as this type of equipment in all kinds of plants and the application of the health sector is more and more widely.
If it is in the open occasions, such as the open job shop using such instruments as a security alarm, can be used to take their dispersive gas detector, continuous, real-time, because it can accurately show the scene of the concentration of poisonous and harmful gases.This kind of new instruments have equipped with vibration alert attachment - to avoid heard no sound alarm in a noisy environment, and install a computer chip to record peak, STEL short-term exposure levels (15 minutes) and TWA (statistical weighting average 8 hours) - provide specific guidance for worker health and safety.
If it is to enter confined Spaces, such as reaction tank, storage tank or vessel, drains or other underground pipes, underground facilities, agricultural airtight YunHuoCang granary, railway tank car, ship, tunnel, such as workplace, before the personnel to enter, it is necessary to detect, and outside confined space for testing.At this point, a multi-gas detector with a built-in sampling pump must be selected.If there are many kinds of gases in the environment, choosing a compound gas detector may achieve twice the efficiency with half the effort.
C) compound gas detector
Composite more gas detector can be on one instrument equipped with the required multiple gas detection sensors, so it has a small volume, light weight, quick response, for the characteristics of gas concentration shows at the same time.More importantly, yiyang's composite multigas detector is cheaper and more convenient to use than multiple single-spread gas detectors.It should be noted that when selecting such detectors, it is better to choose instruments with the function of switching each sensor on and off separately, so as to prevent the damage of one sensor from affecting the use of other sensors.
Product Categories : Production Rescuer Equipment > Gas Detector