Pressure transmitters and temperature transmitters play critical monitoring and control roles in dryers, working together to ensure process stability and product quality. The pressure transmitter primarily monitors the dryer chamber's pressure conditions in real-time, including inlet pressure, exhaust pressure, and filter differential pressure. By providing precise pressure feedback, the control system can automatically adjust fan speed or valve opening to maintain optimal drying pressure, preventing material fluidization issues or safety hazards caused by overpressure or vacuum conditions.
The temperature transmitter continuously measures the hot air temperature, material temperature, and exhaust temperature. Its high-accuracy signal transmission enables precise control of heating power to avoid thermal degradation of heat-sensitive materials or insufficient drying due to low temperatures. Both transmitters typically feature dust-proof and high-temperature resistant designs, communicating with PLCs via 4-20mA or digital signals to form closed-loop control systems.
In spray drying, fluidized bed drying, and other equipment, these transmitters optimize process parameters while meeting GMP requirements for data recording and alarm functions, significantly improving drying efficiency and product consistency.
