Thermostat Process
A Thermostat Process is a temperature control system that circulates a heat-transfer fluid through an external loop and regulates heater/cooling output in real time using closed-loop feedback (commonly RTD/PT100 sensing). This approach helps maintain stable setpoints for jacketed reactors, heat exchangers, condensers, pilot skids, and other process loads where temperature drift impacts repeatability and product quality.
How a Thermostat Process Works
A Thermostat Process controls temperature by:
- Circulating a heat-transfer medium through an external loop (reactor jacket, tool, heat exchanger).
- Reading temperature feedback (PT100/RTD sensing).
- Adjusting heating (and/or refrigeration/cooling capacity) to hold a stable setpoint.
- Running programmed ramps/soaks when multi-step recipes are needed.
This method improves stability under changing process loads and helps reduce overshoot when controlling jacketed systems with external sensors.
Typical Applications
Thermostat Process s in this brochure are used anywhere you need repeatable thermal conditions with continuous circulation, such as:
- Reactor jacket temperature control for synthesis, polymerization, crystallization, and other heat-managed reactions.
- Instrument cooling loops (example: AAS and similar lab instruments) to remove heat and stabilize performance during extended runs.
Pilot-scale process skids / heat exchangers / external loops where stable thermal media temperature supports consistent product behavior.
Product Families in This Brochure
Below is a structured overview of all Thermostat Process product families included in the brochure, grouped by use case.
Heating-focused Thermostat Process
- Precision Heating Temperature Control System (50°C to 200°C) – QualiHeat™ PH Series: Heating and controlled circulation for reactors/jackets and external loops; HMI supports setpoints and trending.
- Integrated Heating Temperature Control System (50°C to 300°C) – QualiHeat™ IH Series: Wider heating window with an enclosed circulation loop to support long runs and stable heat transfer.
Cooling Circulator Thermostat Process
- Integrated Cooling Circulator – QualiCC™ IC Series: Integrated Cooling Circulator designed for stable, recirculating coolant to instruments and external loads (jackets/condensers/heat exchangers).
- QualiCC™ HCC Series: Cooling circulator models covering multiple reservoir sizes and cooling ranges (spec table includes -5 to 45°C and down to -25 to 45°C variants depending on model).
Heating + Cooling (High-precision circulation)
- High Precision Heating and Cooling Circulator families are included as Thermostat Process solutions for applications that need tight control, program profiles, and stable circulation (see “Theory and Method” and feature sets for closed-loop control and PT100 feedback).
Safety / configuration options in the brochure
Certain high-power platforms in the brochure list optional configurations such as SUS 304 chassis, and explosion-proof options (ExdIIBT4 / ExdIICT4 / positive pressure explosion-proof; positive pressure noted as water-cooled only).
What to Compare When Selecting a Thermostat Process
Use these filters to pick the right series and model:
- Temperature range (heating-only vs cooling-only vs heating + cooling)
- Heating power / cooling capacity at your operating temperature
- Flow and pressure required by the external loop
- Interface sizes (DN ports), and site utilities (power, cooling water vs air-cooled)
- Controls & data (touchscreen HMI, trend recording, programmable steps, MODBUS/RS-485)
- Safety & compliance (interlocks, over-temp/low-level protection; explosion-proof options if required)
Feature Themes Seen Across the Brochure
Depending on model family, the brochure highlights capabilities such as:
- Closed-loop temperature control with PT100 feedback and selectable control targets (media/outlet/external point).
- Touchscreen operation with trend display/recording for verification and reporting.
- Programmable multi-step profiles (ramps, holds, repeatable recipes).
- Protection and diagnostics (overload, high-temp, low-level, sensor fault).
