50L Explosion-Proof Heating & Cooling Circulator: PLC Remote Control & -20°C to 200°C Range
Engineered for hazardous industrial environments, this explosion-proof heating and cooling circulator integrates refrigeration, heating, circulation, and control systems, with configurable temperature ranges including -20°C~200°C and -40°C~200°C available to meet custom user demands.
- modelLGD-50EX
- brandLABEKS
- min. order1 pcs
- packageplywood case package
description
The refrigeration system relies on a fully hermetic compressor for mechanical cooling, integrated with plate heat exchangers, expansion valves, and pressure protectors to fulfill specified cooling requirements. The heating system employs electric heating tubes to warm the circulating fluid, which is then delivered via an internal circulation pump through external pipelines to the jacket of supporting equipment, enabling indirect cooling and heating of reactor contents.
For external circulation operation, connect the unit’s upper outlet pipeline to the reactor’s lower inlet pipeline; circulating fluid will flow from the reactor’s upper circulation port back to the unit’s lower return port, establishing a closed-loop circulation system.
Rapid switching between heating and cooling modes is supported, using a single medium (high- and low-temperature silicone oil) that requires no replacement once connected.
The entire liquid circulation loop is fully sealed and includes an expansion tank. Insulated from the main circulation loop, the expansion tank is only mechanically connected and does not participate in fluid circulation. Regardless of the main loop’s operating temperature, the medium within the expansion tank remains below 60°C, preventing water vapor absorption at low temperatures and oil mist formation at high temperatures.
features
1. All compressors are imported units sourced from France and Denmark, ensuring reliable, long-lasting performance.
2. Integrated with a PLC computer module, the circulator supports PC connectivity for remote operation. It enables multi-point continuous temperature control, segmented temperature regulation, constant temperature maintenance, and centralized management of multiple units via a single computer—significantly improving operational convenience and work efficiency.
3. Standard temperature control accuracy is ±1°C; connecting an external sensor enhances temperature difference accuracy to ±0.5°C.
4. A built-in USB interface supports data download functionality, allowing users to save and store test or reaction-related data for reference and compliance tracking.
5. A maximum temperature limit safeguard is included; the unit automatically powers off if the set maximum temperature is exceeded to prevent equipment damage.
6. Comprehensive power supply protection covers three scenarios: phase loss, incorrect live wire connection, and over/under voltage, with error code E-01 displayed for such faults.
7. Compressor overheating protection activates when the compressor reaches its temperature threshold, shutting down the compressor and displaying error code E-02.
8. Water-cooled configurations feature water flow and low water pressure protection, with error code E-03 displayed for related issues.
9. Sensor fault protection is equipped, with error code E-04 displayed in case of sensor malfunctions.
Note:
(1) When connecting the circulator to a reactor’s oil pipes, the total length of supply and return pipes should not exceed 4 meters (2 meters each). Exceeding this length risks cracking the reactor’s glass body.
(2) The temperature ramp-up and ramp-down rates of the unit are affected by ambient conditions, with an optimal maximum ambient temperature of 30°C.
(3) In humid southern regions with humidity levels >50%, the explosion-proof model is required.
(4) Both the circulator and reactor must follow a “low inlet, high outlet” configuration for oil circuit connections.
specifications
Model | LGD-50/20EX | LGD-50/40EX | LGD-50/80EX |
|---|---|---|---|
Matched reactorvolume | 50L | 50L | 50L |
Tank volume(L) | 11 | 11 | 11 |
Heating volume(L) | 2 | 2 | 2 |
Heating tanksize(mm) | ￠90×300 | ￠90×300 | ￠90×300 |
Fuel tank size(mm) | 300*300*120 | 300*300*120 | 300*300*120 |
Use temperaturerange(℃) | -20℃/200℃ | -40℃/200℃ | -80℃/200℃ |
Roundtemperature(℃) | ≤25 | ≤25 | ≤25 |
No load minimumtemperature | -22℃ | -42℃ | -82℃ |
Power | 380V±10% 50HZ | 380V±10% 50HZ | 380V±10% 50HZ |
Heating power(W) | 6000 | 6000 | 6000 |
Cooling power(W) | 6160-1820 | 10280-2560 | 7740-180 |
Temperatureaccuracy | ±0.1℃ | ±0.1 | ±0.1 |
Sensor | PT100 | PT100 | PT100 |
Medium viscosity | 500C.S.T | 500C.S.T | 500C.S.T |
Circulating pumppower(w) | 280 | 280 | 280 |
Head lift(m) | 15 | 15 | 15 |
Flow(L/min) | 30 | 30 | 30 |
The compressoradopts explosion-proof treatment (explosion-proof control box,explosion-proof circulating pump, explosion-proof fan, explosion-proof tube)explosion-proof grade ExdIIBT4 | |||
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
