Precautions for the use of gas detectors, what issues need attention?
For industries such as chemistry, gas, metallurgy, etc., gas detection is one of the most important safety procedures because in industrial production processes, there are irritating and suffocating gases, which are often corrosive and can cause acute poisoning when entering the human body through the respiratory tract. Therefore, gas detectors have been widely used in various industries. Gas detector is an instrument tool for detecting gas leakage concentration. Proper use of gas detector can improve production efficiency and ensure the safety of people's lives and property. So, what should we pay attention to when using it?
1, Selection of gas detector
Different gas detectors are suitable for different scenarios. When choosing a gas detector, it is important to consult the manufacturer to see if it is suitable for the scenario you want to use, in order to avoid losses. Jianda Renke LCD gas transmitter can be used to detect gas concentration parameters in the air environment. When the concentration exceeds the preset alarm value, it will emit an audible and visual alarm signal to remind users to take timely safety measures, prevent explosions and poisoning accidents, and ensure the safety of life and property.
This transmitter adopts a top brand electrochemical sensor, which has the characteristics of rapid response, sensitivity, and strong anti-interference ability. After the company's designed compensation algorithm and multi-stage standard gas calibration, it has the characteristics of long life, high precision, high repeatability, and high stability, and is equipped with a large screen liquid crystal display. The device adopts a wide voltage 10-30V DC power supply, 485 signal output, standard Modbus RTU communication protocol, Modbus address can be set, baud rate can be changed, and communication distance is up to 2000 meters. It can be remotely controlled by infrared, and parameters can be modified without disassembly.
2, Precautions before using a gas detector
(1) Before use, carefully read the instruction manual corresponding to the gas detector and familiarize yourself with the performance and operating methods of the machine.
(2) Check if the battery is sufficient, and if it is found to be insufficient, replace the battery in a timely manner.
(3) Check the intake filter for debris that needs to be cleaned or replaced.
(4) Press and hold the start button for 3 seconds to enter self-test mode. Observe whether the detector is set to a low alarm value and whether the high alarm value is accurately set (CO detector first level alarm 50 ppm, second level alarm 100 ppm); The oxygen detector has a primary alarm rate of 19.5% and a secondary alarm rate of 22%; The hydrogen sulfide detector has a first level alarm of 10 ppm and a second level alarm of 15 ppm. If it does not need to be set and cannot be used, it should be modified immediately.
(5) During the startup process, the self-test should listen to the graded alarm sound and light alarms, and the vibration alarm should be accurate. If it does not meet the set requirements and cannot be used, it should be modified immediately.
(6) Observe whether the initial value is accurate after starting under fresh air conditions (the initial display of the 0 ppm ≤ O2 detector is 20.9%); The initial display of the hydrogen sulfide detector is 0 ppm. If the displayed value is inaccurate and strictly prohibited, it should be modified immediately.
