Our Closed Loop Thermostats (-90°C to +250°C) are precision temperature control units designed for accurate heating and cooling of laboratory and pilot-scale process equipment. These systems circulate a heat transfer fluid through a sealed loop to maintain stable temperatures in jacketed reactors, flow reactors, autoclaves, and crystallizers. Equipped with advanced PID thermostat control, high circulation pumps, and efficient refrigeration systems, they provide temperature stability of up to ±0.5°C, ensuring safe and reliable control of temperature-sensitive reactions in chemical, pharmaceutical, and specialty chemical applications.
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A Closed Loop Thermostat is a temperature control system that regulates the temperature of external process equipment by circulating a heat transfer fluid through a closed circulation loop. The system continuously monitors the process temperature and adjusts heating or cooling using PID-based control to maintain the desired setpoint. Closed loop thermostats are commonly used with jacketed reactors, flow chemistry systems, crystallizers, and pilot plant equipment, where maintaining stable and uniform temperature is essential for reaction control and product quality.
Closed loop thermostats are designed to operate across a wide temperature range from –90°C to +250°C, allowing both low-temperature cooling and high-temperature heating within a single system. This wide operating range enables precise temperature control for processes such as nitration, hydrogenation, crystallization, polymerization, and material synthesis, where reaction conditions must be tightly controlled to ensure consistent results.
Closed loop thermostats can be connected to a variety of laboratory and pilot plant equipment that require controlled heating or cooling, including:
By circulating the heat transfer fluid through the equipment jacket, the system ensures uniform heat transfer and stable process temperatures.
Closed loop thermostats provide several advantages for precise process temperature management. The sealed circulation system prevents contamination of the heat transfer fluid while maintaining consistent thermal performance.
Continuous fluid circulation improves heat transfer efficiency and ensures uniform temperature distribution across the reactor jacket. Modern systems also include advanced safety features such as over-temperature protection, pump flow monitoring, safety interlocks, and programmable controllers, making them reliable temperature control units for laboratory and pilot-scale chemical processes.
