Brothers! Have you been urged by your leaders to wear explosion-proof screens at construction sites or factories recently? Gas stations need digital signage and chemical plants need safety monitoring, but there are a variety of products on the market.​ ​What kind of explosion-proof screen is really worth making? ​ ​Today we will carry the toolbox and teach you step by step how to pick something that can carry something as hard as dynamite!

1. Explosion-proofing is not about labeling. These parameters must be welded.

Last month, I was helping a friend to accept a project, and I almost got scammed - the "explosion-proof screen" boasted by a supplier turned out not to even reach IP54 protection. Here are the key points:​ ​Explosion-proof screens are not just a matter of putting a label on them, they require real effort.​​。

​​1. The shell should be hard enough​​

• The cabinet must be made of aviation-grade aluminum-magnesium-zinc alloy, which will not break or flatten if dropped.
• The seams should be sealed at least 3 times, and there should be no leakage when soaked in water for 24 hours.
• Last year, a refinery project was tested and found that this structure withstood level 8 strong winds + chemical corrosion.

​​2. The circuit must be closed.​​

• Fully sealed glue filling process, not even an ant can crawl into the motherboard
• Dual power supply redundancy design, automatic switching in 0.3 seconds when power is off
• The worst case I have ever seen - lightning struck the distribution box, and the display screen did not go black.

​​3. To dissipate heat, you need to be able to breathe.​​

• It has shark gill cooling holes on the back, and the internal and external air pressure automatically balances.
• Intelligent temperature control system, anywhere from -30℃ to 60℃
• Measured data: At the same brightness, this structure has a temperature 15% lower than that of an ordinary screen.℃

2. Don’t be taken advantage of when buying a screen. Three secrets to save money.

Lao Zhang suffered a big loss in purchasing last year - he just looked at the low unit price, but it turned out that the maintenance fee in three years was enough to buy two new machines. Here’s how to spend your money wisely:

​​Tip 1: You must be able to settle accounts in your life span​​

• Choose lamp beads with a lifespan of 100,000 hours and save money on screen replacement twice in five years.
• The power supply must use military-grade capacitors, and the failure rate drops by 70%.
• Case study: A certain offshore platform has been in use for five years, with an average power-on time of 18 hours a day and attenuation of less than 15%.

​​Tip 2: Maintenance should be brainless​​

• Modular design, a single box can be quickly disassembled in 3 minutes
• Remote diagnosis system, 75% of faults can be repaired online
• The most worry-free thing I've ever seen - the gas station guy uses the mobile app to calibrate the screen

​​Tip 3: Energy consumption requires you to be able to breathe​​

• Intelligent light adjustment, soaring to 5000nit during the day and automatically adjusting to 800nit at night
• Actual test data: 24-hour screen on, saving 40% on monthly electricity bills
• A convenience store chain installed this kind of screen and saved two employees' wages a year.

3. Installation is not about building blocks and walking around these minefields.

Do you remember the joke about the factory next door last year? I spent a lot of money to buy an explosion-proof screen, but it turned out that the heat sink was installed backwards, and the board burned out within three months. Here are some tips for you:

​​Guide to avoid pits 1: The foundation must be stable enough​​

• If the thickness of the concrete base is ≥30cm, anti-vibration pads must be added.
• Don’t believe the nonsense about “hanging it directly on the wall”. You have to withstand a magnitude 9 earthquake.
• Refer to the standard of a certain chemical plant: each fixed point can bear 1.5 tons.

​​Pitfall avoidance guide 2: Play with heartbeat when routing the wires​​

• Explosion-proof metal hose must wrap the cables throughout
• The grounding resistance should be <4Ω. If this is missing, fireworks will be set off.
• One coal mine failed to do a good job of grounding, and static sparks directly ignited gas.

​​Pitfall avoidance guide 3: Bring someone with you for acceptance check​​

• Infrared thermal imaging camera detects heat dissipation dead spots
• High-pressure water cannon simulates heavy rain flushing
• During the acceptance inspection of a certain port project, they were bombarded with fire water cannons for half an hour.

personal opinion time

After working in this industry for more than ten years, I have watched explosion-proof screens change from special equipment to regular configurations. Let me tell you something from the bottom of my heart:​ ​Buying a screen now is not about buying hardware, it’s about buying insurance.​ ​. Last year, I helped a gas company make a plan, and their chief engineer made a calculation - a set of qualified explosion-proof screens can reduce the probability of safety accidents to 0.03%, which is much more cost-effective than buying commercial insurance.

Recently discovered a new trend——​ ​Explosion-proof screen begins to play cross-border​ ​. For example, some projects embed environmental monitoring sensors directly into the screen to display temperature, humidity, and harmful gas concentrations in real time. This thing can save lives at critical moments, and the price is actually cheaper than installing a separate sensor.

Finally, I would like to remind you: a good screen is like a watchdog——​ ​Normally silent, but really biting when something happens​ ​. Before signing a contract, be sure to ask the supplier to provide an "Extreme Environment Test Report". The most brutal test I have ever seen was to throw the screen into gasoline and light it on fire. This is truly explosion-proof!

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