Product details
Product Description
The SZ-7521T Digital Temperature Controller is specifically designed for air dryer applications, providing precise temperature control and efficient system operation. It ensures reliable performance by maintaining accurate set point control and protecting the compressor from frequent cycling.
This controller features a single set point operation with differential-based control, where the compressor automatically switches ON and OFF based on temperature variation. It also includes a smart drain valve function with adjustable timing, making it ideal for managing moisture removal in air dryer systems.
Equipped with a touch-sensitive interface, the SZ-7521T offers easy configuration and monitoring. It includes advanced protection features such as compressor delay, probe failure handling, and fault indication, ensuring safe and long-term operation in industrial environments.
Key Features
Single set point temperature control
Designed for air dryer applications
Smart drain valve control (time-based / auto)
Compressor protection with delay function
Touch-sensitive keypad interface
Fault detection and probe failure protection
Stable and reliable performance
Applications
Air dryers
Compressed air systems
Industrial drying systems
HVAC control panels
FAQs
Q1: Is SZ-7521T suitable for refrigeration systems?
No, it is mainly designed for air dryer and compressed air applications.
Q2: Does it support drain valve control?
Yes, it includes a dedicated drain valve function with adjustable timing.
Q3: How does the compressor control work?
The compressor operates based on set point and differential temperature control.
Q4: Does it have protection features?
Yes, it includes compressor delay, fault detection, and probe failure protection.









