Yiheng TUS-200P Oscillating Constant-Temperature Metal Block Heater

Overview

The Yiheng TUS-200P Oscillating Constant-Temperature Metal Block Heater is an engineered thermal platform designed for precise, uniform heating and controlled horizontal orbital oscillation of sample tubes and vials in molecular biology, clinical diagnostics, and analytical chemistry workflows. Unlike water baths or dry-block heaters without motion control, the TUS-200P integrates Peltier-assisted resistive heating with a brushless DC motor-driven oscillation mechanism—enabling simultaneous temperature stabilization and gentle mixing within a compact metal block architecture. Its solid aluminum heating block ensures rapid thermal response, minimal gradient deviation across wells (<0.3 °C at 37 °C), and long-term stability under continuous operation. The device operates on a closed-loop PID temperature control algorithm, delivering reproducible thermal conditions compliant with ISO/IEC 17025–recommended practices for equipment qualification in accredited laboratories.

Key Features

• High-resolution LCD display with intuitive menu-driven interface—supports simultaneous real-time monitoring of set temperature, actual temperature, oscillation speed (rpm), and remaining timer duration.
• Auto-recovery function: resumes pre-interruption settings—including target temperature, oscillation speed, and remaining time—following power restoration, minimizing protocol disruption and data loss.
• Precision microprocessor control ensures temperature linearity ≤±0.1 °C and oscillation speed stability within ±2 rpm across the full range (200–1,500 rpm).
• Programmable timer (0–100 h) with audible end-of-cycle alert and visual countdown; supports cascade timing for multi-step incubation protocols.
• Interchangeable aluminum sample blocks with standardized well geometries (e.g., 0.2 mL, 0.5 mL, 1.5 mL, 2.0 mL tube formats); custom block design available upon request for non-standard vessel types.
• Instant oscillation “pulse” mode—single-button activation for brief agitation without altering active temperature or timer settings.
• Brushless DC motor drive eliminates carbon brush wear, ensuring >20,000 hours of maintenance-free operation and electromagnetic noise reduction compatible with sensitive instrumentation environments.

Sample Compatibility & Compliance

The TUS-200P accommodates common laboratory consumables including PCR tubes, microcentrifuge tubes, skirted and non-skirted 96-well plates (with optional adapter), and low-profile reaction vessels. All standard blocks are CNC-machined from high-purity anodized aluminum to prevent corrosion and ensure thermal homogeneity. The unit complies with IEC 61010-1:2010 safety standards for electrical equipment used in laboratory environments. While not certified for medical device use under FDA 21 CFR Part 820, its operational consistency supports GLP-aligned documentation when integrated into validated SOPs—for example, in nucleic acid extraction, enzyme reaction incubation, or antigen-antibody binding steps requiring thermal + mechanical stimulation. Temperature calibration reports traceable to NIM (National Institute of Metrology, China) are available upon request.

Software & Data Management

The TUS-200P operates as a standalone instrument without proprietary software dependency. All parameters are configured directly via front-panel controls and stored in non-volatile memory. For labs implementing electronic lab notebooks (ELN) or LIMS integration, the device supports manual log entry of critical parameters (setpoint, dwell time, oscillation speed) per run. Optional RS-232 serial output (available via accessory module) enables basic ASCII command/response communication for external logging—compatible with LabVIEW, Python pySerial, or custom SCADA systems. Audit trails must be maintained externally, as the unit does not embed 21 CFR Part 11-compliant user authentication or electronic signature functionality.

Applications

• Molecular biology: PCR master mix equilibration, restriction enzyme digestion, ligase reactions, and cDNA synthesis where temperature-sensitive enzymes require both thermal precision and homogeneous reagent suspension.
• Clinical microbiology: Blood culture bottle agitation during incubation, antibiotic susceptibility testing media preparation, and immunoassay plate shaking prior to ELISA readout.
• Pharmaceutical QC: Dissolution sample heating with agitation, buffer equilibration for HPLC mobile phase preparation, and stability study vial conditioning per ICH Q1 guidelines.
• Environmental testing: Extraction efficiency enhancement for solid-phase microextraction (SPME) and accelerated solvent extraction (ASE) pre-concentration steps.
• Academic research: Kinetic studies involving heterogeneous catalysis in solution-phase reactions, nanoparticle synthesis nucleation control, and polymerase fidelity assays under thermally modulated shear conditions.

FAQ

Does the TUS-200P support external temperature probe input for chamber monitoring?
No—the unit relies exclusively on internal PT100 sensor feedback embedded in the aluminum block. External probe integration is not supported.
Can the oscillation direction be reversed or adjusted to vertical motion?
No—oscillation is fixed in horizontal orbital mode (18–25 mm diameter sweep) optimized for tube-based samples. Vertical or linear shaking configurations are not available.
Is the heating block interchangeable between different Yiheng models?
No—blocks are mechanically and thermally calibrated for the TUS-200P’s specific power delivery and thermal mass profile. Cross-model compatibility is not guaranteed.
What is the maximum allowable ambient operating temperature?
The device is rated for continuous operation at ambient temperatures up to 30 °C and relative humidity ≤80 % non-condensing.
Are CE or UL certifications available for export to EU or North America?
The base model carries CE marking per EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. UL listing is not held; users requiring UL compliance should consult authorized third-party certification agencies for field evaluation.