4-in-1 gas detectorPreparations before testing should include checking whether the battery is sufficient (above 3.3V), charging in time if it is not sufficient; checking whether the air inlet filter is blocked by debris, which needs to be cleaned or replaced, etc. It can measure a variety of gases, react quickly and accurately to toxic gas to ensure that there is a danger, and is suitable for agriculture, chemical industry, construction, electric power, fire protection, natural gas, general industry, toxic materials, iron and steel industry, petroleum and petrochemical, sewage treatment and other fields.
1. Power-on operation:
Press the [MODE] button and hold it for 1 second, the LCD display is "on", the LED is on, the peak sounder sounds, and the instrument is turned on.
LCD displays version number, preheating and self-test at the same time;
After 10 seconds of warm-up and self-test, the instrument enters the detection mode to confirm that the instrument is running normally;
Confirm that fresh air is indeed being pumped, and confirm that the indicator value of the oxygen indicator meter is indeed 20.9%;
Insert the end of the sampling tube into the test point, and after the test value changes stable, read and record;
Take out the sampling tube from the test point, put it in the air, and wait for the LED display value to return to the air state, and then perform the next test point test;
2. Shutdown operation:
Press and hold the button, the LCD will display for 5 seconds**, and the LCD will show "off" after the end, and then the instrument will not be displayed and the instrument will be turned off.
4-in-1 gas detector
1. For safety reasons, it can only be operated and maintained by qualified personnel4-in-1 gas detector。 Before operation and maintenance, you must fully read and understand the value of the user manual.
2. Charge the detector before use. It is recommended to charge the detector after each working day.
3. The instrument should be calibrated before use, and after that, it should be calibrated regularly according to the use and the exposure of the instrument to harmful gases or pollutants. It is recommended that it must be calibrated every 180 days (6 months).
4. Such asFlammable Gas sensorExposure to any catalyst contaminants/poisons (e.g. sulfides, silicon vapors, halogen compounds, etc.) is recommended to be tested by a standard gas at known concentrations.
5. It is recommended to conduct a "shock test" on the sensor before daily use, that is, to confirm that the detector can respond to the gas and activate the audible and visual alarm by exposing it to a gas with a concentration exceeding its high limit alarm point. If the detector reads beyond the specified range, it should be calibrated.
6. Avoid exposing flammable gas sensors to lead-containing compounds, silicones, chlorinated hydrocarbons. Although some organic vapors (e.g., leaded gasoline, halogenated hydrocarbons) may temporarily stop the sensor from working properly, in most cases, it is possible to restore its function through calibration.
7. The detector can only be used in potentially explosive gas environments with an oxygen concentration of no more than 20.9% (v/v).
8. The sudden rise and fall of the detector reading or the unstable reading may indicate that the concentration of a gas exceeds the upper limit of the measuring range, which may be dangerous.
9. In some environments, the interference of electromagnetic waves may cause the instrument to work abnormally.
1. Please read the operation manual carefully before using the instrument. This instrument needs to be used and maintained by personnel or specialized personnel who have been trained for a certain period of time.
2. The maintenance of instruments and the replacement of parts must be completed by specially trained personnel.
3. Battery replacement or charging must be done in a safe place.
4. Pay attention to prevent the instrument from falling from a height or being subjected to violent vibration.
5. The instrument display is abnormal and makes an intermittent sound, which is caused by the battery voltage being too low, and it can return to normal after charging.
6. It is strictly forbidden to expose the instrument to high concentration of corrosive gas for a long time to prevent reducing the sensitivity of the sensor and damaging the sensor in severe cases.