Brookfield TC-150 Precision Temperature-Controlled Circulating Water Bath

Overview

The Brookfield TC-150 is a high-precision, recirculating temperature-controlled water bath engineered for consistent thermal regulation in analytical, quality control, and research laboratory environments. Utilizing a closed-loop circulation system with PID-controlled heating and integrated liquid-level sensing, the TC-150 maintains stable bath temperatures across a broad operational range—up to 150°C—while minimizing thermal gradients and evaporation-induced drift. Its modular controller architecture allows users to select from three distinct control platforms—MX (entry-level), SD (mid-tier), and AP (advanced)—each calibrated to meet escalating demands for accuracy, programmability, and data traceability. Unlike basic immersion baths, the TC-150 delivers active heat transfer via adjustable flow rates and precision-matched pump dynamics, ensuring uniform thermal distribution even during extended operation or when coupled with external equipment such as viscometers, density meters, or sample holders.

Key Features

• Precision temperature control with stability down to ±0.01°C (AP model), validated per ASTM E1137/E1137M for laboratory thermometer calibration applications
• Three interchangeable controller modules: MX (LED display, single-speed pump), SD (LCD interface with dual-speed pump and Rheocalc™ PC connectivity), and AP (full-color touchscreen with variable-speed pump, multi-language UI, and embedded help system)
• Wide operating range: ambient +10°C to 150°C (SD & AP), ambient +10°C to 135°C (MX), supporting both aqueous and low-volatility heat-transfer fluids
• Integrated safety systems including overtemperature cutoff, dry-run protection, and automatic shutdown upon fluid level drop below operational threshold
• Robust stainless-steel reservoir (15 L capacity) with corrosion-resistant internal components and removable access panels for routine maintenance
• Front-panel USB port (AP/SD) and RS-232/RS-485 interfaces for instrument integration into LIMS or centralized lab automation networks

Sample Compatibility & Compliance

The TC-150 accommodates standard laboratory vessels—including glass beakers, metal sample blocks, and jacketed reactor sleeves—via its large, flat bath surface and adjustable immersion depth. Its circulation design supports compatibility with external devices requiring precise thermal conditioning, such as rotational rheometers (e.g., DVNext series), capillary viscometers, and differential scanning calorimeters. The system complies with ISO/IEC 17025 requirements for equipment calibration traceability and includes built-in functionality to generate time-stamped temperature logs compliant with FDA 21 CFR Part 11 when used with validated Rheocalc™ software configurations. All controller variants support manual calibration offset adjustments traceable to NIST-certified reference thermometers.

Software & Data Management

Rheocalc™ software serves as the unified platform for configuration, scheduling, and data acquisition across SD and AP models. It enables creation of multi-step temperature ramps, hold profiles, and conditional triggers (e.g., start measurement upon reaching target stability). Raw temperature readings are timestamped at user-defined intervals (1–60 seconds), exported in CSV or XML formats, and archived with digital signatures to satisfy GLP audit requirements. The AP controller extends this capability with on-device data visualization, trend analysis tools, and password-protected user roles (Operator, Supervisor, Administrator) aligned with ICH GCP Annex 11 principles.

Applications

• Viscosity testing per ASTM D2196 and ISO 2555 using Brookfield rotational or capillary viscometers
• Thermal preconditioning of polymer melts, pharmaceutical suspensions, and cosmetic emulsions prior to rheological or particle size analysis
• Calibration of temperature-sensitive sensors and probes in metrology labs
• Accelerated stability studies under controlled thermal stress per ICH Q1A(R2)
• Enzyme activity assays requiring strict thermal consistency across replicate runs
• Material testing per ASTM D696 (coefficient of linear expansion) and ASTM D792 (density of plastics)

FAQ

What is the recommended maintenance schedule for the TC-150 water bath?

Perform weekly visual inspection of fluid level and cleanliness; replace heat-transfer fluid every 6–12 months depending on usage frequency and temperature setpoint. Calibrate temperature sensor annually using a NIST-traceable reference probe.
Can the TC-150 operate continuously for 72+ hours?

Yes—the unit is rated for unattended 24/7 operation when installed in a well-ventilated environment with stable power supply and proper fluid management.
Is Rheocalc™ software included with purchase?

Rheocalc™ is bundled with SD and AP controller models; MX models do not support software integration and rely on front-panel controls only.
Does the TC-150 support external temperature feedback from a probe placed inside a sample vessel?

No—the TC-150 regulates bath temperature only. For sample-core temperature control, use an external PID controller interfaced via analog output (available on AP model) or integrate with a compatible process controller.
What certifications does the TC-150 carry for international use?

CE-marked for EMC and Low Voltage Directive compliance; UL/cUL recognized (File E499837); RoHS 3 and REACH compliant; factory-tested per IEC 61010-1:2010 for laboratory electrical safety.