Heating Cooling Temperature Controller for Precise Dual-Loop Thermal Management
A heating cooling temperature controller manages both heating and cooling outputs within a single unit, maintaining precise thermal balance across a range of −150°C to +250°C. Xi'an Bioland Instrument Co., Ltd. brings 15+ years of manufacturing experience to this CE- and ISO-certified controller, supporting PLC integration, explosion-proof configurations, and 7×24-hour continuous industrial operation — built for pharmaceutical, chemical, and laboratory environments where thermal precision is non-negotiable.

Key Features & Benefits
Wide Temperature Coverage: −150°C to +250°C
A single controller handles both deep-freeze crystallization and high-temperature synthesis reactions. No need to source or maintain separate heating and cooling units — one device covers your full process window.
Fully Sealed Circulation System
The closed-loop design isolates the heat transfer medium from external contamination. In pharmaceutical and food-grade applications, medium purity directly affects batch quality and regulatory compliance. The sealed system eliminates cross-contamination risk without additional filtration steps.
Multi-Layer Safety Protection
Built-in sensor break protection automatically forces outputs to a safe state if the input circuit fails, preventing uncontrolled thermal runaway. The optional explosion-proof configuration meets requirements for environments with flammable vapors or gases.
Configurable Deadband for Equipment Protection
A programmable neutral zone between heating and cooling setpoints prevents simultaneous output activation. This eliminates compressor short-cycling, reduces mechanical wear, and measurably lowers energy consumption over sustained operation.

How It Works?
The controller reads process temperature continuously via thermocouple or RTD input. Below setpoint: the heating output activates. Above setpoint: the cooling output responds. PID Auto-Tune calibrates Proportional, Integral, and Derivative constants against your system's actual thermal mass — no manual trial-and-error. Anti-Windup protection prevents Integral saturation during large deviations, delivering a smooth return to setpoint without overshoot.
For cooling compressors, On/Off control prevents short-cycling damage while PID precision is preserved on the heating side. The deadband ensures the two outputs never activate simultaneously, protecting both the process and the mechanical components.

Construction & Materials
| Feature |
Specification & Benefit |
| Front Panel Protection |
IP65 / NEMA 4X — dust-tight and liquid washdown resistant |
| I/O Galvanic Isolation |
>2300V AC — eliminates ground loops from VFD interference |
| Relay Output Durability |
Tested >100,000 operations at full rated load |
| Internal Circulation |
Corrosion-resistant sealed design — preserves medium purity |
Why Choose Us
Xi'an Bioland Instrument Co., Ltd. has delivered thermal process equipment to pharmaceutical manufacturers, university research labs, and chemical processing plants across 30+ countries since 2009.
What sets us apart:
- In-house R&D team — standard and fully custom configurations handled without third-party engineering delays
- OEM/ODM lead time — approximately 30 business days with weekly photo/video production updates
- Factory Acceptance Test (FAT) — available at our Xi'an facility before shipment
- Flexible logistics — sea, rail, and air freight for global delivery

Technical Parameters
|
Model
|
BL-8018
|
BL-8030
|
BL-8062
|
BL-8090
|
BL-80A1
|
BL-80A2
|
|
Temp.Range
|
-80ºC~RT
|
|
Temp control and display
|
ASET multi-function controller, optional color touch screen operation and display
|
|
Temperature control selection
|
Control the temperature of cooling medium outlet
|
|
Communication protocol
|
MODBUS RTU protocol RS485 interface
|
|
Temperature feedback
|
The built-in cooling medium PT100 feedback
|
|
Cooling
capacity
|
-40ºC
|
0.6KW
|
1.4KW
|
2.8KW
|
3.4KW
|
4.8KW
|
7.2KW
|
|
|
-60ºC
|
0.4KW
|
0.8KW
|
1.6KW
|
2.1KW
|
4KW
|
6KW
|
|
|
-75ºC
|
0.2KW
|
0.5KW
|
0.9KW
|
1.2KW
|
2KW
|
3KW
|
|
Circulating pump flow rate / Pressure
|
Max 20L/min; 1.0bar
|
Max 20L/min; 1bar
|
Max 35L/min; 1.5bar
|
Max 35L/min; 1.5bar
|
Max 75L/min; 1.5bar
|
Max 75L/min; 1.5bar
|
|
Storage tank volume
|
15L
|
15L
|
25L
|
25L
|
40L
|
60L
|
|
Compressor
|
Copeland or Dorin
|
|
Evaporator
|
Heat exchanger
|
|
Operation panel
|
Touch button, LCD screen display
|
|
Safety protection
|
Equipped with overload protection of refrigeration unit, high pressure switch, overload relay, thermel protection device, and other safety protection functions.
|
|
Refrigerant
|
R404A/R23
|
|
Interface connector
|
DN15
|
DN20
|
DN20
|
DN20
|
DN20
|
DN20
|
|
Power supply
|
Single phase AC220V/50Hz
|
3Phase 380V,50Hz, could be customized.
|
|
Total power(Max)
|
3KW
|
4KW
|
5.5KW
|
7KW
|
8.7KW
|
11.5KW
|
|
Dimension
|
500*680* 1350mm
|
500*680* 1350mm
|
650*700* 1650mm
|
650*700*1650mm
|
750*750*1800mm
|
850*850*1850mm
|
|
Shell material
|
Cold rolled plate spray (optional SUS304 shell)
|
Application Fields
Bio-pharmaceutical Fermentation
Exothermic microbial growth requires coordinated steam injection and glycol jacket cooling. The dual-loop controller holds fermentation temperature within ±0.1°C (verified under standard batch conditions), protecting enzymatic activity and yield consistency.
Chemical Reactors and Synthesis
Rapid cooling response during exothermic reactions prevents thermal runaway. The heating cooling temperature controller manages heating during startup ramp and active cooling once the reaction phase begins — within a single integrated unit.
Environmental Test Chambers
Ramp-and-Soak thermal profiles from −70°C to +150°C for electronics reliability testing require bidirectional precision that single-direction controllers cannot provide.
Plastic Injection Molding
Resistive heating for startup and fluid cooling to dissipate shear friction heat are managed in tandem, preventing material degradation and dimensional warping.
Food and Cosmetics Production
Emulsification and mixing processes require stable thermal conditions. The configurable deadband prevents both overshoot and undershoot at sensitive formulation temperatures.
Services & After-Sales Support
- 1-year quality warranty with lifetime maintenance support
- Weekly production tracking with photo/video updates from your dedicated specialist
- Factory Acceptance Test (FAT) available at our Xi'an facility
- Pre-sales technical consultation on controller configuration and system integration
- OEM/ODM customization: control panels, temperature ranges, communication protocols
- Non-customized units ship within 5–7 business days

Quality Certifications & Compliance
- CE & ISO certified manufacturing facility
- GMP and FDA requirements met for pharmaceutical and food-grade applications (documentation available on request)
- Burn-in testing: 55°C / 48 hours per unit, aligned with IEC 60068-2 accelerated aging protocols, to screen early component failures before shipment
- Cold Junction Compensation verified on all thermocouple-based units for accurate readings across varying ambient conditions
FAQ
Q: What does the deadband setting do?
A: It creates a neutral zone between heating and cooling setpoints. Within this zone, neither output activates — preventing simultaneous heater and cooler operation and protecting compressors from rapid cycling.
Q: Can I use PID for heating and On/Off for cooling on the same controller?
A: Yes. PID manages precision heating; On/Off protects the cooling compressor from short-cycling. This dual-mode configuration is standard and field-proven.
Q: What happens if the temperature sensor fails?
A: Sensor break protection is built in. If the input circuit opens, outputs are automatically forced to a pre-configured safe value — typically 0% — preventing uncontrolled heating.
Q: Which communication protocol supports PLC or SCADA integration?
A: RS-485 Modbus RTU is available. The controller sends live process values and accepts updated setpoints from your central control system in real time.
Q: Why does temperature overshoot before stabilizing?
A: This typically indicates PID parameters that are not matched to your system's thermal mass. The Auto-Tune function recalibrates the algorithm to your specific lag time and heat capacity — run it once after installation.
Q: Is the system suitable for hazardous or flammable environments?
A: Yes. The optional explosion-proof configuration is certified for chemical plants and environments with flammable vapors or gases.
Contact Us
Email info@biolandequip.com for a heating cooling temperature controller quote or technical consultation.