Friends who have just entered the industry may have encountered this embarrassment: they spent a lot of money to buy a "explosion-proof screen", but after using it in a chemical factory for half a year, the color blocks were offset, and the control card was corroded and rusted. Only then do you realize that purchasing industrial explosion-proof screens is not as simple as placing an order on Taobao. Today, let’s take a look at where the tricks in this industry are hidden.

​​Explosion-proof level is the lifeblood​​

You must have heard of the words IP65 and CE certification, but the most fatal parameter of industrial explosion-proof screens is actually the explosion-proof sign. To give a real case, the screen purchased by a petrochemical plant last year almost caused a gas flash explosion accident because the explosion-proof level was not up to standard. Here is a point of knowledge: a true industrial explosion-proof screen must be marked with a certification code like Ex ic nC IIC T4 Gc. This alphanumeric combination is like the engine model of a car, which directly determines how dangerous it can work in.

​​Three must-sees:​​

• View the original certificate (don't trust the scanned copy)
• Check whether the explosion-proof signs include operating environment classification (such as the hydrogen environment corresponding to Class II C)
• Confirm the applicable temperature range (certain Arctic Circle projects require low temperature start of -40℃)

​​Buy online or offline? ​ ​

Let me first talk about something abnormal: now 70% of industrial customers will check the parameters at 1688 first, but finally go offline to sign the contract. Why? Because the installation plan of explosion-proof screen is much more complicated than choosing a mobile phone case. For example, to install screens for offshore drilling platforms, you have to consider parameters such as salt spray corrosion and vibration coefficient. These cannot be found in the e-commerce page.

​​Channel comparison table:​​
| ​​Online shopping platform​​ | Blurry parameters, transparent price, suitable for standard products
| ​​Direct sales from the manufacturer​​ | Supports scene customization, but the order quantity requirements are high
| ​​System Integrator​​ | Package installation and debugging, the price has increased by about 30%

Last year, a Southeast Asian port project was a typical case. They first compared the price online for three months, but finally found that the parameters were not up to par. They found a manufacturer with experience in chemical engineering projects to redesign the box structure and add three layers of anti-corrosion coatings.

​​Five Pit Protection Guide​​

1. ​​The heat dissipation structure needs to be touched​​
   Don’t just look at the promotional page and write “efficient heat dissipation”, and let the sales take the internal structure diagram directly. A truly reliable one will adopt a suspended circuit board design, just like putting an umbrella on electronic components, which can not only prevent dust and accelerate air convection.

2. ​​Driver power supply must be carried​​
   The voltage fluctuations in the industrial environment are comparable to roller coasters. Remember to choose a wide voltage power supply (9-36V). There is a cold knowledge: military-grade power modules can respond to sudden voltage changes in 0.1 second, which is 20 times faster than home power supplies.

3. ​​Pixel redundancy leave room​​
   Don't jam the resolution too much. Gas corrosion often causes necrosis of lamp beads in chemical factories. Professional manufacturers will do 10% pixel redundant design - simply put, install one percent spare lamp beads, and the number of broken ones will not affect the overall display.

4. ​​Connectors are more important than screens​​
   Check whether all interfaces are M12 military connectors. This threaded locking interface has three times the shock resistance of ordinary aviation plugs. Last year, a coastal oil refinery relied on this to withstand the equipment.

5. ​​Scenario simulation report​​
   Don’t be fooled by laboratory data, just ask for three-year operation reports for similar scenarios. For example, in the high-temperature dust environment of the steelmaking workshop, the temperature change curve of the screen surface is more convincing than any parameter table.

​​Hidden costs of maintenance​​

Buying a screen is the beginning, and subsequent maintenance is the big one. A friend from a pharmaceutical factory complained to me that the cleaning fee of a certain brand of screen they bought costs 80,000 yuan per year - because the structural design is unreasonable, the elevator must be used for disassembly and assembly. Therefore, be sure to confirm three points before signing the contract:

• Does it support hot-swap repair (continuously switch modules)
• Is the cleaning tool specially customized?
• Can control software be upgraded remotely

​​Personal opinion​​

There are too many players on the market who are under the banner of "industrial explosion-proof", and some of them don't even understand the basic explosion-proof principle. It is recommended that everyone regard the purchasing process as a blind date - don’t just look at the appearance (screen display effect), but also look at the property (explosion-proof structure), check credit (project cases), and talk about the future (upgrade space). Remember, the real good screen is not piled up with parameters, but the iron lump that can still illuminate stably in the roar of the refinery, in the salt spray on the offshore platform, and under the vibrations in the depths of the mine.

for more product information and pricing, please contact us .