combustible gas alarm in the use of a long period of time, its sensitivity will gradually reduce or even damage, otherwise, the zero instability will affect the use of combustible gas alarm. Therefore, at this time, we need to calibrate the zero point and indication value of the combustible gas alarm in time, so as to better ensure the normal use of the combustible gas alarm. So do you know how to zero the combustible gas alarm ? The following is a brief introduction by yi yun Tian:

method of zero adjustment of combustible gas alarm:

Step 1: Press the power button after power on to enter the menu page.

Step 2: Press the up and down keys to select menu items.

Step 3: Select the zero point setting, click the power button to enter, select gas, and check whether the number is 0.

step 4: if the value is not 0, enter the zero fine-tuning from the menu, adjust the value to 0 through the addition and subtraction items, and save it.

the combustible gas alarm after zero adjustment is connected with a certain concentration of gas standard substance. after the indication value is stable, if the difference between the indication value of the combustible gas alarm and the concentration value of the gas standard substance exceeds the allowable range, the indication value of the combustible gas alarm shall be calibrated.The calibration method is basically similar to the zero point calibration. The method is that the alarm after zero point adjustment is introduced into the gas standard substance with the concentration specified in the instruction manual of the combustible gas alarm, and the flow of the flowmeter is adjusted to the appropriate range through the flow controller to ensure that gas is released from the bypass flowmeter. After the indication value of the combustible gas alarm is stable, the indication value is adjusted to the concentration value of the gas standard substance according to the steps described in the instruction manual of the combustible gas alarm.

In summary, this is the method of zeroing the combustible gas alarm. By zeroing the combustible gas alarm, we can ensure the normal use of the combustible gas alarm and effectively ensure the safety and effectiveness of its test data.