SOPTOP DCY-0506 Low-Temperature Constant Temperature Bath

Overview

The SOPTOP DCY-0506 Low-Temperature Constant Temperature Bath is a precision-engineered thermal control system designed for laboratory applications requiring stable, programmable temperature environments across a broad operational range (−5 °C to 95 °C). It operates on the principle of closed-loop refrigeration-heating thermoregulation, integrating a high-efficiency compressor-based cooling module with a PID-controlled resistive heating element and a dual-mode circulation pump. This architecture enables simultaneous heat extraction and addition—critical for maintaining tight thermal setpoints during exothermic or endothermic sample interactions. The unit’s stainless steel inner bath and chamber provide chemical resistance, mechanical durability, and long-term dimensional stability under repeated thermal cycling. Its compact footprint (340 mm × 405 mm × 670 mm) and 6 L working volume make it suitable for immersion-based calibration, viscometry support, spectrophotometer temperature control, and reaction vessel thermostating in analytical, quality control, and R&D laboratories.

Key Features

• Microprocessor-based LCD controller with real-time temperature display (0.1 °C resolution) and programmable setpoint ramping
• Dual-mode circulation system supporting both internal recirculation (for bath homogeneity) and external flow (for remote temperature control of auxiliary equipment)
• Integrated liquid level sensor with audible/visual alarm to prevent dry-run operation and protect the heating element and pump
• High-reliability centrifugal pump delivering consistent 8 L/min flow at low backpressure—optimized for compatibility with common laboratory tubing and heat exchangers
• Stainless steel 304 construction for inner tank, lid, and structural housing—resistant to corrosion from water, ethylene glycol/water mixtures, and low-concentration organic solvents
• RS232 communication interface enabling bidirectional data exchange with PC-based lab software for logging, remote setpoint adjustment, and firmware updates

Sample Compatibility & Compliance

The DCY-0506 accommodates standard laboratory vessels including glass beakers (up to Ø140 mm), jacketed reactors, probe-type sensors (e.g., Pt100, thermocouples), and immersion-style analytical instruments. Its open-bath design (150 mm × 150 mm aperture) allows unobstructed access for multi-probe insertion or stirrer integration. While not certified as a medical device or GMP-grade instrument, the unit meets general-purpose laboratory safety standards per IEC 61010-1:2010 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use). Its temperature stability (±0.05 °C) supports ISO/IEC 17025-compliant calibration workflows when used with traceable reference thermometers. For regulated environments, users may configure audit trails via third-party SCADA or LIMS systems interfaced through the RS232 port.

Software & Data Management

The built-in controller stores up to 10 user-defined temperature programs, each with up to 8 segments (ramp rate, hold time, setpoint). Real-time temperature readings and alarm status are transmitted serially at 9600 baud; ASCII-formatted output includes timestamp, setpoint, actual bath temperature, and error codes. Compatible Windows-based utilities (supplied on USB drive) enable data export to CSV, trend graphing, and batch report generation. Though the device itself does not implement FDA 21 CFR Part 11 electronic signature or audit trail functionality, its deterministic communication protocol permits integration into validated systems where external software handles electronic records management per GLP/GMP requirements.

Applications

• Calibration of temperature-sensitive instrumentation (e.g., digital thermometers, RTDs, infrared sensors)
• Thermal conditioning of samples prior to rheological, viscometric, or density measurements
• Temperature stabilization of UV-Vis spectrophotometer cuvette holders and detector housings
• Controlled-rate cooling/heating for polymer crystallization studies and phase transition analysis
• Support bath for rotary evaporators, circulating chillers, and external condensers in synthetic chemistry workflows
• Environmental simulation for accelerated aging tests of electronic components and packaging materials

FAQ

What fluids are compatible with the DCY-0506 bath?

Deionized water, 30–50% aqueous ethylene glycol solutions, and silicone oils up to 100 cSt viscosity are recommended. Avoid halogenated solvents, strong acids/bases, or flammable liquids unless explicitly approved by SOPTOP technical documentation.
Can the unit maintain −5 °C continuously in ambient conditions above 30 °C?

Yes—its refrigeration system is rated for continuous operation at full capacity within an ambient range of 15–30 °C. At higher ambient temperatures (>30 °C), cooling efficiency decreases; maximum achievable low-temperature setpoint may rise by ~1–2 °C.
Is external temperature feedback supported?

No—the DCY-0506 uses only its integrated Pt100 sensor for control. External probe input is not available; however, users may log external sensor data in parallel using the RS232 interface.
Does the pump support pressure regulation or flow metering?

The pump operates at fixed speed (8 L/min nominal at zero head); no variable-speed drive or integrated flowmeter is included. Flow can be throttled externally using needle valves or restrictors.
What maintenance intervals are recommended?

Inspect coolant level and cleanliness monthly; replace bath fluid annually or after contamination. Clean stainless steel surfaces with non-abrasive detergent; verify refrigerant charge and compressor performance every 24 months via authorized service technician.