As an indispensable and important equipment in the field of industrial safety monitoring, the measurement accuracy of hydrogen detector is directly related to the safety factor of production operation and the health of employees. Therefore, in order to better ensure that the hydrogen detector can work accurately and reliably, regular accuracy calibration is an essential link. So do you know the accuracy of the hydrogen detector , how to calibrate it? The following is an introduction to yiyuntian electronic editor:

detailed steps for accuracy calibration of hydrogen detector:

1. preparation phase

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(1) Select standard gas:

In principle, a standard gas that matches the measurement certification and test gas should be selected.The standard sample gas needs to be measured and certified to ensure its accurate and reliable concentration. The same measured medium selected standard gas is different, the alarm point is also different. Therefore, the concentration and alarm point of the selected standard sample gas should be clearly defined before the calibration of the hydrogen detector.

(2) Check the tester status:

Ensure that the hydrogen detector is in normal working condition without damage or malfunction. Check that the display, indicators and keys of the tester are working correctly.

(3) Connecting devices:

Connect the standard gas cylinder to the gas pressure reducing valve and control the gas flow through the glass tube rotameter. Connect the output of the flow meter to the air inlet of the hydrogen detector.

2. calibration phase

(1) Set parameters:

Set the alarm point and range of the hydrogen detector according to the concentration of the selected standard sample gas.

(2) Insufflating sample gas:

Open the valve of the standard sample gas cylinder, adjust the gas pressure reducing valve and flowmeter, and let the sample gas flow into the hydrogen detector at an appropriate flow rate.

(3) Observations:

Observe whether the hydrogen detector reading is stable and compare it with the concentration of the standard gas. If the reading deviation is large, the calibration parameters of the hydrogen detector need to be adjusted until the reading is accurate.

(4) Record data:

Record the data and parameters during the calibration process, including the concentration of the standard gas, the reading of the flow meter, the reading of the hydrogen detector, etc.

3. Completion Phase

(1) Shut down the device:

After the calibration is completed, close the valve of the standard gas cylinder and disconnect it from the hydrogen detector.

(2) Organize data:

The data and parameters recorded during the calibration process are collated and archived.

(3) Calibration recommendations:

To ensure accurate measurement of the hydrogen detector, annual calibration is recommended. If the use environment is bad or the hydrogen detector alarms frequently, it can also be calibrated every six months.

4. Notes

(1) Environmental Requirements:

Before calibration, ensure that the environment around the hydrogen detector probe is free of flammable gases.If there is combustible gas, the rain cover should be removed first, filled with a certain amount of clean air, and then connected to the sample gas to ensure the accuracy of calibration.

(2) Gas-like selection:

When the measured gas is a mixture of hydrocarbons, isobutane is the first sample gas, followed by propane. For non-hydrocarbon mixtures or hydrocarbon mixtures with a large difference in the amount of heat generated during incineration of gases with lower explosive limit concentration, easily available and stable single-component fuels such as butane, isobutane and propane can be used as sample gases if necessary. However, at this time, the range of the hydrogen detector needs to be adjusted according to the conversion of the detection signal.

To sum up, we can see that the accuracy calibration of the hydrogen detector is a meticulous and important process. By following the above steps and precautions of the accuracy calibration of the hydrogen detector, the measurement accuracy and reliability of the hydrogen detector can be effectively ensured, so as to provide strong technical support for industrial safety production.