20L Touch Screen Heating & Cooling Circulation Integrated Machine with Remote Control and -20℃~200℃ Range
Featuring an LCD touch control panel and integrated heating/cooling capabilities, the heating & cooling circulation integrated machine provides precise temperature regulation across -20℃~200℃, -40℃~200℃, with customizable temperature ranges available to meet specific customer needs.
- modelLGD-20SZ Series
- brandLABEKS
- min. order1 pcs
- packageplywood case package
description
For refrigeration, the high and low temperature circulator employs a fully enclosed compressor for mechanical cooling, integrated with a plate heat exchanger, expansion valve, and pressure protector to fulfill cooling demands. Electric heating tubes are utilized to heat the circulating fluid for the heating function.
Via its built-in circulation pump and external pipelines, the refrigerant or heat transfer medium is delivered to the interlayer of supporting equipment, enabling indirect heating and cooling of materials within the reactor. For external circulation, connect the upper outlet pipeline to the kettle body’s lower inlet; fluid then circulates back from the reactor’s upper port to the unit’s lower return port, forming a complete closed loop.
The high and low temperature circulation integrated machine enables rapid switching between heating and cooling modes. A single heat transfer medium—high and low temperature silicone oil—is used for both functions, eliminating the need for medium replacement post-connection. This addresses the inefficiency of relying on two separate devices for heating and cooling tasks.
The entire liquid circulation loop of the unit is fully sealed, with an insulated expansion vessel that is mechanically connected but does not participate in the circulation process. Regardless of the circulation fluid’s temperature (high or low), the medium within the expansion vessel remains below 60°C. This prevents water vapor absorption at low temperatures and oil mist emission at high temperatures.
features
9. All compressors are imported units sourced from France and Denmark, ensuring reliable, high-performance refrigeration.
2. Equipped with a PLC computer module, the unit supports PC connectivity for remote operation. It enables multi-point continuous temperature control, segmented temperature control, and constant temperature regulation, with a single computer capable of managing multiple high and low temperature devices to boost operational efficiency significantly.
3. A built-in USB interface supports data download functionality, allowing users to save and store data from material tests or reactions, providing valuable reference data for subsequent experimental procedures.
1. Standard temperature control accuracy reaches ±1°C; connecting an external sensor enhances temperature difference precision to ±0.5°C.
4. Over-temperature limit protection prevents equipment malfunction: the unit automatically shuts off if temperatures exceed the set maximum, safeguarding against thermal damage to components.
5. Comprehensive power supply protection covers phase loss, incorrect live wire connection, and over/under voltage conditions, with error code E-01 displayed for such faults.
6. Compressor overheating protection activates when the unit reaches its thermal limit: the compressor stops operating, and error code E-O2 is displayed.
7. Water cooling systems feature water flow and low water pressure protection, with error code E-03 triggered for related issues.
8. Sensor fault protection is included, with error code E-04 displayed in the event of a sensor malfunction.
Note:
(1) The total length of oil pipes connecting the high and low temperature circulation device to the reactor must not exceed 4 meters (2 meters for the supply pipe and 2 meters for the return pipe). Exceeding this length risks cracking the reactor’s glass body.
(2) The unit’s temperature ramp-up and ramp-down rates are influenced by ambient conditions, with an optimal maximum ambient temperature of 30℃.
(3) For installations in high-humidity environments (humidity >50%), the explosion-proof model is recommended.
(4) The oil circuit connection between the unit and the reactor must follow the “low inlet, high outlet” configuration.
specifications
Model | LGD-20/20SZ | LGD-20/30SZ | LGD-20/40SZ | ||
|---|---|---|---|---|---|
Operating temperature range | -20℃~200℃ | -30℃~200℃ | -40℃~200℃ | ||
Ambient temperature | 5℃~35℃ | ||||
Environment humidity | ≤70% ventilation | ||||
Power supply | 220V/50HZ | ||||
Safety protection | Delay, over current, over heat, over temperature, phase sequence, phaseloss protection | ||||
Display screen | 7-inch touch color screen, program temperature control | ||||
Temperature control accuracy | ±1℃ | ||||
Sensor | PT100 | ||||
Total power of the whole machine | 4570W | 5305W | |||
Heating power | 3000W | ||||
Compressor | Specification | Fully enclosed | |||
Quantity | 1 | 1 | 1 | ||
Power | 1103W | 1470W | 2205W | ||
Cooling capacity | 4648W | 4648W | 6972W | ||
The refrigerant | R22 | ||||
Body material | Cold plate sprayed anti-corrosion material | ||||
Size(L*W*H) | 710*780*1055mm | ||||
Net weight | 131kg | 142kg | |||
why choose us
Premium Quality with CE & ISO
We conduct 100% performance testing on every unit, ensuring its stable operation and superior performance in your application.
24/7 Expert Technical Support
Our senior engineers are on standby 24/7, ready to provide expert solutions at any time to minimize your operational downtime.
20+ Years R&D & Production
Our deep technical expertise is your solid guarantee for professional and reliable OEM/ODM services.
Trusted in 80+ Countries
Industry leaders and research institutions in over 80 countries and regions rely on our equipment for stable operation.
True Manufacturer, Factory-Direct Price
Bypass the middlemen to get our factory pricing and speak directly with our core engineers.
Rapid & Reliable Delivery
Our extensive in-stock inventory provides a solid guarantee for rapid and reliable global delivery.
Our Factory
20 Years
58 Experts
20000 m²
7X24 Hours
