| Working Temperature Range | -40 to 200°C |
| Ambient Temperature | 5 to 35°C |
| Relative Humidity | Less than or equal to 70% |
| Temperature Control Accuracy | ±1° |
| Temperature Sensor | PT100 |
| Circulating Pump Pressure | Less than or equal to 0.4 MPa |
| Circulating Pump Lift | 4 to 6 m |
| Max. Reactor Volume Can Be Matched | 20 L |
| External Input | External Sensor Port |
| Cooling Capacity | 6972 W |
| Heating Power | 3000 W |
| Compressor Power | 2205 W |
| Circulating Pump Power | 100 W |
| Power Consumption | 5400 W |
| Power Supply | Single Phase 220V / 50Hz |
| Dimensions (W × D × H) | 630 × 670 × 990 mm |
| Net Weight | 104 kg |
Tool-free service access
Adjustable flow rate setting
Multi-layer insulation shell
Self-diagnostic alert system
Reinforced support chassis frame
High and Low Temperature Circulator LHLTC-A21 provides controlled heating and cooling to support external devices across research and production environments. This ensures consistent thermal conditions for use in reactors, fermentation units, and small-scale process systems.
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High And Low Temperature Circulator LHLTC-A21 Catalog
Labtron High and Low Temperature Circulator operates across a wide temperature range suitable for controlled heating and cooling tasks. They feature a control system that ensures stable performance under thermal variations. Their circulation system delivers uniform fluid flow for consistent temperature. These units use optimized compressor power with protections like over-temperature cut-off and delay. Our High and Low Temperature Circulator supports bio-fermentation tanks extraction units beverage lines and semiconductor cooling setups.








High and Low Temperature Circulator LHLTC-A21 is designed with circulation stability in mind, offering a low-pressure pump setup that helps prevent structural stress in fragile glass reactors. Its pump operation minimizes turbulence during flow, avoiding agitation that might compromise the integrity of biological or chemical samples. The internal mechanics are configured to operate smoothly even when temperature differentials are steep, avoiding sudden thermal shifts. A consistent fluid movement is maintained even under long duty cycles, ensuring reaction uniformity over time. It offers uninterrupted operation by using durable connectors that resist leaks or flow inconsistency. A carefully insulated enclosure ensures that external fluctuations don’t impact the working environment. Noise and vibration are reduced during long circulation sessions. This makes the system particularly reliable for labs handling temperature-sensitive organic compounds.
The High and Low Temperature Circulator LHLTC-A21 includes an external sensor port that allows thermal adjustments based on feedback from the connected unit. This setup ensures that heat transfer is not just generated internally but aligns with the actual requirements of the pilot system it supports. Fluid temperatures can be adjusted dynamically, reducing overshoot and helping stabilize process parameters in field setups. System integrity is protected even when dealing with variable thermal loads. Its robust frame accommodates operational shifts in pilot lines without compromising temperature output. Feedback control allows system engineers to fine-tune heat input based on the real-time state of reactors or jacketed vessels. With safe thermal coupling, scale-up procedures benefit from reproducible outcomes. This makes the circulator suitable for bridging lab testing with pilot-scale operations.
Our High and Low Temperature Circulator LHLTC-A21 features a tool-free panel design that simplifies service checks and maintenance. This layout avoids the need for specialized tools or external technicians for basic inspection routines. Internal parts such as filters, fuses, or electrical panels are easy to reach through the structured service panel. Users can complete cleaning or component access with minimal effort and limited disassembly. The panel's structure ensures that the machine remains enclosed during operation and opens only when necessary. This feature helps prevent dust intrusion or heat loss during system downtime. Components inside are arranged to allow for safe and quick evaluations. This design greatly improves turnaround time when switching between thermal cycles or operational shifts.
Labtron’s High and Low Temperature Circulator LHLTC-A21 has an adjustable flow rate control that allows researchers to customize circulation strength depending on their reactor's size. This adjustability avoids excessive pressure on small-volume glass setups while ensuring adequate heat exchange in medium to large containers. By tailoring the circulation force, users can maintain consistent conditions across a wide variety of vessel geometries. Delicate crystallization and distillation processes benefit from this tailored circulation without compromising thermal reach. The flexibility helps avoid inefficient energy use during partial load scenarios. Its user-accessible control interface allows rapid changes to flow settings during ongoing experiments. This leads to reduced wait times and increases experimental throughput. As a result, labs can rely on a single circulator across multiple applications without compromising consistency.
High and Low Temperature Circulator LHLTC-A21 is constructed with a multi-layer insulation shell that provides additional protection from ambient chemical exposure. The outer casing shields internal electronics from temperature interference and airborne solvents. It uses coated panels that resist warping or degradation in proximity to reactive vapours. The system’s layout prevents accidental contact with hot surfaces by using thermal guards and layered barriers. Internally, components are mounted to reduce conductivity between heat zones and external housing. These layers enhance operational durability during extended cycles under aggressive thermal profiles. This reduces the need for external enclosures or chemical shielding during most routine setups. Such ruggedness makes it dependable for use in synthesis labs and environmental simulation setups.
The High and Low Temperature Circulator LHLTC-A21 is equipped with a self-diagnostic alert function that actively monitors key performance indicators. It automatically detects irregularities in pump function, temperature deviations, and sensor faults. Alerts are generated on-screen to guide the user towards corrective steps before any process is compromised. The system's memory stores fault codes that help service engineers troubleshoot issues without dismantling the unit. It continuously tracks multiple thermal zones within the device to detect imbalance early. Users are not required to run external checks, as the inbuilt software constantly validates system health. This self-check mechanism supports long shifts without requiring constant supervision. As a result, operational risks are reduced significantly in active lab environments.
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Labtron Equipment Ltd., Quatro House, Lyon Way, Camberley, Surrey GU16 7ER United Kingdom
Email: info@labtron.com Whatsapp: +44 73 4441 2688 Phone: +44 2080 043608