PID Controller

Shanghai Zhaohui Pressure Apparatus Co., Ltd. is one of the leading manufacturers and suppliers of pid controller in China, also supports customized service and 1 year warranty. Welcome to wholesale bulk durable pid controller in stock here from our factory.

The PID Controller is a closed-loop intelligent pressure controller applying proportional-integral-derivative algorithms to maintain a process variable at set point with minimal error and overshoot. The PID Controller computes deviation between measured variable and set point, generating corrective output from three terms: proportional (current error), integral (offset elimination), and derivative (rate-of-change damping). This versatile algorithm regulates temperature, flow, pressure, level, and speed across industrial processes. Modern microprocessor-based controllers feature auto-tuning to calculate optimal gains without expert intervention. Dual-line displays show set point and process value, with bar graphs indicating output power. Outputs include continuous analog signals (4–20 mA) for modulating valves or time-proportional outputs for heaters. Communication options like Modbus or Profibus enable network supervision. Multi-loop versions control multiple channels. Selection requires evaluating I/O count, sample rate, and control accuracy. Proper tuning is critical-aggressive settings cause instability, while conservative tuning yields sluggish performance-making these controllers indispensable for precise, repeatable process control.

Essential in temperature control furnaces/ovens, flow control pipelines, hydraulic pressure regulation, tank level control, motor speed drives, and HVAC systems. Found in batch processing, continuous manufacturing, pharmaceutical production, food processing, and environmental chambers. It delivers precise, repeatable closed-loop regulation for critical process parameters across all industrial sectors.

Microprocessor-based with auto-tuning capability for optimal gain calculation. Dual-line display shows set point and process value simultaneously. Provides analog (4–20 mA) or time-proportional outputs. Supports multiple communication protocols (Modbus, Profibus). Multi-loop versions available. Delivers stable, overshoot-minimized closed-loop control. Critical for precise temperature, flow, and pressure regulation.