CZGY HH-S Digital Display Constant Temperature Oil Bath
| Brand | CZGY |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | HH-S |
| Instrument Type | Water Bath / Oil Bath |
| Circulation Function | Internal Circulation |
| Power Supply | 220 V, 50 Hz |
| Temperature Range | Ambient to 299 °C |
| Temperature Stability | ≤ ±1 °C |
| Heating Power | 2000 W |
| Bath Chamber Dimensions | 300 × 300 × 300 mm |
| Stirring Function | Mechanical Stirrer (0–3000 rpm) |
Overview
The CZGY HH-S Digital Display Constant Temperature Oil Bath is a precision-engineered thermal control instrument designed for stable, uniform, and programmable heating of samples immersed in oil or high-boiling-point liquids. Operating on resistive heating with PID-controlled feedback regulation, it delivers reliable temperature maintenance across a wide operational range—from ambient up to 299 °C—making it suitable for applications requiring elevated thermal stability beyond the limits of water baths. Constructed from corrosion-resistant stainless steel, the unit features a robust bath chamber, integrated mechanical stirring, and digital temperature readout with adjustable setpoint and calibration offset. Its design prioritizes long-term operational reliability, energy efficiency, and compatibility with standard laboratory workflows in chemistry, materials science, polymer processing, and quality control laboratories.
Key Features
- Stainless steel bath chamber (300 × 300 × 300 mm) engineered for chemical resistance and thermal durability
- Digital PID temperature controller with ±1 °C stability and user-adjustable parameters (P, I, D, cycle time, alarm threshold)
- Internal mechanical stirring system (0–3000 rpm) ensuring homogeneous temperature distribution throughout the bath medium
- Over-temperature alarm (AL parameter) with visual indicator and configurable trip point
- Sensor offset correction (SC parameter, ±50 °C range) to compensate for probe drift or installation-specific thermal lag
- Parameter lock function (LCK) to prevent accidental modification of critical control settings during routine operation
- Heating power output of 2000 W optimized for rapid heat-up and steady-state maintenance at high setpoints
Sample Compatibility & Compliance
The HH-S oil bath accommodates standard glassware—including round-bottom flasks, reaction vessels, and immersion probes—within its open-top chamber. It supports common heat-transfer media such as silicone oil, mineral oil, and glycerol-based fluids with flash points exceeding 300 °C. While not certified to specific international standards (e.g., ISO/IEC 17025 or ASTM E228), its performance characteristics align with general laboratory requirements for thermal uniformity and repeatability in non-regulated research and development environments. Users operating under GLP or GMP frameworks may implement supplementary verification protocols—including independent thermometer calibration and temperature mapping—to meet internal audit requirements. The device complies with basic electrical safety standards applicable to Class I laboratory equipment rated for 220 V / 50 Hz mains supply.
Software & Data Management
The HH-S operates via an embedded digital controller without external software dependency. All configuration—including setpoint, PID tuning, alarm thresholds, and sensor offset—is performed locally using front-panel push-button interface (SET, Δ, ▽). The controller logs no historical data or timestamps; however, it supports audit-ready parameter locking (LCK = 2) to preserve configuration integrity across shifts or operators. For laboratories requiring electronic records per FDA 21 CFR Part 11, integration with external data loggers or SCADA systems is feasible via optional analog output modules (not included). No proprietary drivers or cloud connectivity are provided; operation remains fully standalone and deterministic.
Applications
- Controlled-temperature synthesis of organic compounds and metal-organic frameworks requiring extended heating above 100 °C
- Viscosity measurement pre-conditioning of polymer melts and thermoplastic resins prior to rheological testing
- Calibration of temperature-sensitive sensors and reference probes using traceable oil media
- Accelerated aging studies of coatings, adhesives, and elastomers under isothermal stress conditions
- Sample preparation for HPLC mobile phase degassing, solvent evaporation, and derivatization reactions
- Support heating for distillation apparatus, Soxhlet extractors, and reflux condensers in analytical chemistry workflows
FAQ
What is the maximum recommended operating temperature for continuous use?
The HH-S is rated for sustained operation up to 299 °C; however, actual upper limit depends on the thermal stability and flash point of the selected bath fluid. Silicone oils with flash points ≥320 °C are recommended for prolonged high-temperature use.
Is external cooling capability available?
No—the HH-S provides heating only. It does not include refrigeration or active cooling circuits. For applications requiring both heating and cooling, a dual-temperature circulator bath is recommended.
Can the mechanical stirrer be operated independently of heating?
Yes. Stirring speed is controlled separately via dedicated knob or button and functions regardless of whether the heater is enabled or at setpoint.
How is temperature uniformity validated within the bath chamber?
Users should perform temperature mapping using NIST-traceable calibrated probes at multiple locations (center, corners, near walls, at different depths) after thermal equilibrium is reached (typically ≥30 minutes at target setpoint).
Does the unit support RS-232 or USB communication?
No—this model lacks digital communication interfaces. Remote monitoring or automation requires third-party hardware integration via analog voltage/current outputs (if retrofitted) or external temperature controllers.
