Moksadul e-Lab

আসুন, আমরা প্রতিজ্ঞা করি, ডকুমেন্টস এর সঙ্গে বাস্তবে প্রতিষ্ঠা করি —
✔️ নিরাপদ কর্মপরিবেশ নিশ্চিত করব
✔️ শ্রমিকের অধিকার রক্ষা করব
✔️ সম্মান ও মর্যাদা প্রতিষ্ঠা করব

Happy International Workers' Day ( 1 May day)
শ্রমিক বাঁচলে, দেশ এগোবে 🇧🇩।
বাংলাদেশে বলেই কি আমরা পারি না ডকুমেন্টস থেকে বের হতে!

নতুন আম দিয়ে শুরু হোক গরমের মজা!
বলতে পারবেন এটি কি আম?

Industrial online pH meter.

Human Automation VS Industrial Automation

Before operation and after maintenance work sensor adjustment work is very important.

ঈদ মোবারক 🌙🎆
২০২৬/ ১৪৩২

📊 Working Principle
This is Vertical centrifugal pump. This pump works on the centrifugal force principle:

➡ Motor rotates the impeller
➡ Fluid enters the impeller eye
➡ Centrifugal force pushes the fluid outward
➡ Velocity energy converts into pressure energy
➡ Fluid flows to the discharge pipeline

🏭 Typical Applications

✔ Water treatment plants
✔ Chemical dosing systems
✔ Boiler feed systems
✔ Cooling water circulation
✔ Industrial process fluid transfer

🔧 Understanding a Compound Pressure Gauge in Industrial Systems

In many industrial process systems, monitoring both positive pressure and negative (vacuum) pressure is essential for safe and stable operation. The instrument shown here is a compound pressure gauge, which can measure pressure above and below atmospheric pressure.

📊 Gauge Range
This gauge has a measurement range of approximately –0.1 MPa to +0.15 MPa:

Negative side (Vacuum): –0.1 MPa

Positive pressure: +0.15 MPa

This allows operators to observe whether the system is operating under vacuum conditions or positive pressure.

*Output : Generally this type of gauge give output relay contact ( NO/ NC) for alarm.

Compound gauges are commonly used in:
Chemical dosing systems
Water treatment plants
Pump suction and discharge monitoring
Filtration systems
Closed tank or pipeline monitoring

⚡ What is the main advantage of an SMPS compared to a linear power supply?

A) Larger size
B) Higher heat loss
C) Higher efficiency
D) Low switching frequency

* If an SMPS output voltage becomes unstable (fluctuating), the most common cause is:

A) Output capacitor failure
B) Transformer core rust
C) DC fan speed high
D) Input plug size mismatch

👉 Comment your answer below! 👇

আলহামদুলিল্লাহ দীর্ঘ সময় পর বাংলাদেশ পেল পুরুষ প্রধানমন্ত্রী, অভিনন্দন।

💡 Light Dependent Resistor (LDR):
A Light Dependent Resistor (LDR), also called photoresistor, is a special type of resistor whose resistance changes automatically with the intensity of light falling on it.

An LDR is a passive electronic sensor that detects light.
📌 More light → Lower resistance
📌 Less light (darkness) → Higher resistance

Working Principle
The working of an LDR is based on the principle of photoconductivity. When light photons hit the semiconductor surface, they release electrons. More free electrons mean better conductivity.
So, the resistance decreases as light intensity increase

🌍 Common Applications of LDR

✅ Automatic Street Light Control
✅ Solar Garden Lamps
✅ Light Intensity Measurement
✅ Camera Exposure Control
✅ Burglar Alarm Systems
✅ Smart Home Lighting Automation
✅ Day/Night Switching Circuits