TAITEC CB-40 with SM-05R Low-Temperature Circulating Bath

Overview

The TAITEC CB-40 with SM-05R is a compact, air-cooled circulating bath engineered for precise low-temperature and ambient-to-moderate heating applications in analytical, biochemical, and materials laboratories. Designed as a modular system, it operates in conjunction with TAITEC’s Thermo Minder temperature controllers (e.g., SP-12R) to deliver stable thermal regulation across a wide operational range—from 0 °C to +70 °C. Its core function relies on closed-loop liquid circulation: the bath circulates temperature-controlled water or aqueous glycol solutions through external devices—such as spectrophotometer cells, reaction jackets, or chromatography columns—enabling accurate thermal management of peripheral instrumentation. The unit employs a hermetically sealed refrigeration circuit with optimized heat exchange geometry, ensuring consistent cooling performance even under sustained load. Unlike open-bath systems, its fully enclosed reservoir minimizes evaporation, contamination risk, and ambient humidity interference—critical for long-duration stability tests and GLP-compliant workflows.

Key Features

• Space-efficient footprint (130 × 164 × 315 mm) designed for benchtop integration without compromising utility—accommodates up to 50 standard test tubes using optional rack fixtures.
• Ultra-low acoustic signature (<45 dB(A)) achieved via vibration-damped compressor mounting and optimized airflow pathways—suitable for noise-sensitive environments including microscopy suites and electrophysiology labs.
• Dual-mode thermal control: simultaneous refrigeration and resistive heating enable rapid setpoint transitions and hysteresis-free stabilization, especially critical near phase-change thresholds (e.g., ice-point calibration).
• Integrated 13 A power outlet provides conditioned mains supply to connected Thermo Minder controllers, eliminating redundant power strips and reducing electrical clutter.
• Multi-layer safety architecture includes short-circuit breaker, thermal fuse, compressor overheat cutoff (+40 °C threshold), and ground-fault leakage protection—fully compliant with IEC 61010-1 for laboratory equipment safety.
• External circulation port (Ø10 mm) supports flow rates up to 9 L/min, compatible with standard peristaltic and diaphragm pumps for extended loop configurations.

Sample Compatibility & Compliance

The CB-40 with SM-05R is validated for use with aqueous and low-concentration glycol-based heat-transfer fluids (e.g., 20–30% ethylene glycol/water). It is not rated for oil, organic solvents, or corrosive media. Its stainless-steel-coated internal tank resists oxidation and facilitates cleaning between experiments. From a regulatory standpoint, the system supports compliance with ISO/IEC 17025 requirements for temperature-controlled testing environments when operated with traceable Thermo Minder controllers and calibrated reference probes. While not intrinsically FDA 21 CFR Part 11 compliant, audit-ready operation is achievable when paired with TAITEC’s optional data-logging software (e.g., ThermoLog Pro) that records timestamps, setpoints, actual temperatures, and alarm events with user authentication and electronic signature support—meeting GLP and GMP documentation expectations.

Software & Data Management

When interfaced with TAITEC’s SP-12R Thermo Minder controller, the CB-40 enables digital PID tuning, ramp-soak programming, and real-time deviation monitoring via RS-485 or analog 0–10 V output. Optional ThermoLog Pro software (Windows-based) provides CSV export, trend visualization, and automated report generation—including min/max/mean statistics per session. All logged data include ISO 8601 timestamps, operator ID fields, and hardware-generated checksums to ensure integrity. Firmware updates are delivered via USB and retain user-configured parameters post-installation—minimizing downtime during routine maintenance cycles.

Applications

• Calibration of thermocouples, RTDs, and infrared sensors against NIST-traceable references at fixed sub-zero and elevated setpoints.
• Thermal conditioning of HPLC autosampler trays and column ovens to suppress retention time drift in method transfer studies.
• Controlled-rate cooling of protein crystallization trials where reproducible nucleation kinetics depend on ±0.05 °C stability over 12+ hours.
• Stabilization of laser diodes and photomultiplier tubes requiring constant junction temperature to maintain quantum efficiency and dark current specifications.
• Accelerated aging tests for polymer films and adhesives per ASTM D3045 protocols, using programmed temperature ramps between −10 °C and +60 °C.

FAQ

What is the minimum operating temperature when using only the built-in cooling system?
The CB-40 achieves 0 °C without auxiliary cooling accessories. For sub-zero operation (e.g., −10 °C), TAITEC B-type cooling coils or external chillers must be integrated.
Can this bath be used with silicone oil or other non-aqueous fluids?
No. The pump seals and internal coating are specified for water and glycol–water mixtures only. Use of oils or solvents voids warranty and risks seal degradation.
Is external circulation mandatory, or can the bath operate in static mode?
It functions in both modes: internal recirculation maintains bath uniformity; external flow enables thermal coupling to external devices—user-selectable via valve configuration.
How often does the system require refrigerant service or compressor maintenance?
Under normal lab conditions (8 hrs/day, 25 °C ambient), no scheduled refrigerant recharge is required over a 10-year service life. Compressor oil is sealed-for-life; only periodic filter inspection is recommended.
Does the unit support remote monitoring via Ethernet or Wi-Fi?
Not natively. Communication is RS-485 or analog. Ethernet connectivity requires TAITEC’s optional SP-12R-E interface module, which adds Modbus TCP and SNMP v3 support for enterprise SCADA integration.