5 Key Indicators for Testing Exhaust Emissions from Laser Marking Workshops

When testing exhaust from laser etching workshops, the five core indicators to focus on are volatile organic compounds, particulate matter, and ozone concentration.Combining actual workshop scenes with analysis of exhaust components, equipment selection, and environmental protection standards, the program helps firms efficiently control production emissions and ensure that they comply with safety regulations.

Why is it so important to test workshop emissions?

The laser marking process produces exhaust gases when metal or plastic is processed at high temperatures. If not properly treated, these gases can not only affect worker health, but also violate environmental regulations.The exhaust gases from our factory are complex, including metal dust, organic volatile compounds (VOCs), and even ozone. If we exceed the standards, we will either be fined or forced to shut down and reorganize.So, the first step is to clarify the "key indicators.

Five exhaust pollutants that must be monitored.

The VOCs concentration.

VOCs are the biggest problem in laser marking exhaust fumes, especially when processing plastics or coated materials, which release harmful gases such as benzene and formaldehyde.When testing, it is recommended that you use a portable VOC detector, so that you can monitor changes in the concentration of VOCs in real time. Don't wait until you can smell them to take action!

The PM10 level is 120.

The fine dust produced by metal stamping can remain suspended in the air, and prolonged exposure to this dust can lead to respiratory problems.To measure particulate matter, a PM2.5 / PM10 sensor is used, which focuses on the distribution of particle sizes. The sensor can then adjust the air volume of the dust removal equipment in real time.

Ozone concentration.

The high energy of the laser reacts with oxygen to produce ozone, which can irritate the eyes and lungs.Ozone monitoring devices should be installed in the workshop, and if the level exceeds 0.1 ppm, ventilation should be enhanced or the equipment power reduced.

The two main types of pollutants are carbon monoxide (CO) and nitrogen oxides (NOx).

These two gases are common in high-temperature metal cutting scenes, although their concentrations are usually not high, the cumulative harm is great.The recommendation is to use a gas analyzer to do a quantitative analysis every quarter, and compare the results with the limits set forth in the "Comprehensive Standards for Emissions of Air Pollutants.

Ventilation efficiency of the workshop.

Many people ignore this point.Using a wind-speed meter to measure the speed of air flowing out of the exhaust outlet, to ensure that air is being changed at least six times per hour. Otherwise, no matter how good the air-purifying equipment, it will be useless.

Which testing equipment can be relied on?

Don't buy cheap, unbranded sensors. Instead, go for a CMA-certified model, such as the portable models made by Hanwang or Honeywell.We calibrate our instruments on a regular basis, especially the VOC and ozone sensors, which are sensitive to temperature and humidity.If the company is small, it is more economical to rent third-party services, and they can even provide compliance reports.

What do you do when you exceed the legal limit?

First, don't panic! Immediately check for the source of pollution. Is there a new material? Has the power been turned up too high? Then, depending on the situation, install a carbon filter or an electrostatic precipitator.Remember to leave at least two spare exhaust fans in the workshop, so that in an emergency they can be put into use quickly.

The last thing you need to know is that the Environmental Protection Administration is now checking up more closely, so it's important to keep good records of your tests. The data should be kept for at least three years.It's better to spend a little money on testing than to face a fine of several hundred thousand dollars.