Posts

Showing posts from May, 2026

Key Differences Between PID and Interlock

Image
PID (Proportional-Integral-Derivative) controllers modulate process variables (like speed or temperature) continuously to maintain a setpoint. Conversely, an Interlock is a binary (on/off) safety system that forces equipment to stop or prevent start-up if dangerous conditions exist. PID regulates; interlocks protect.  Key Differences Between PID and Interlock Function: PID: Provides continuous, proportional control to keep a process variable close to a setpoint (e.g., maintaining 500 RPM). Interlock: Provides discrete, binary action (e.g., stop pump if pressure is \(>100\) PSI). Action Type: PID: Analog/Modulating (adjusts output from 0–100%). Interlock: Digital/Binary (On/Off, True/False). Operating Objective: PID: Efficiency, stability, and process regulation. Interlock: Safety, equipment protection, and hazard prevention. Typical Application: PID: Heater temperature control, flow rate regulation, speed control. Interlock: Emergency Shutdown (ESD) systems, preventing p...

The Backbone of Material Handling: Conveyors in Crushing & Screening Plants

Image
The Backbone of Material Handling: Conveyors in Crushing & Screening Plants In any modern crushing and screening operation, conveyors are not just auxiliary equipment—they are the arteries of the plant, ensuring continuous, efficient, and controlled material flow. While crushers and screens often take the spotlight, the true productivity of a plant heavily depends on how effectively material is transferred between stages. Why Conveyors Matter More Than You Think A well-designed conveyor system directly impacts: Plant throughput (TPH) Operational efficiency Wear and tear on primary equipment Energy consumption Material segregation and quality A poorly configured conveyor can bottleneck even the most advanced crushing setup. Understanding Conveyor Capacity (TPH) The capacity of a conveyor is determined by a combination of variables: Where: A = Cross-sectional area of material (m²) V = Belt speed (m/s) ρ = Bulk density (kg/m³) Example: If: Belt width = 1000 mm Speed = 2.5 m/s Material...