CZGY HH-S16 Digital Display Constant Temperature Water Bath

Overview

The CZGY HH-S16 Digital Display Constant Temperature Water Bath is an engineered laboratory thermal platform designed for precise, stable, and uniform temperature control in aqueous environments. It operates on the principle of resistive heating combined with proportional-integral (PI) temperature regulation, delivering consistent thermal energy across the full bath volume via a high-efficiency 4000 W submerged heating element. The unit maintains setpoint stability within ±0.5°C across its operational range—from ambient +5°C up to 100°C—making it suitable for applications requiring reproducible thermal conditions over extended durations. Its 43 L stainless steel tank provides ample working volume for simultaneous processing of multiple samples, while the dual-row 16-well configuration (each well accommodating vessels up to 120 mm in diameter) supports parallel sample handling in teaching labs, QC testing facilities, and R&D environments. The HH-S16 complies with general safety requirements for Class I electrical appliances per IEC 61010-1 and meets structural durability standards for continuous-duty benchtop thermal equipment.

Key Features

• Digitally controlled PID-based temperature regulation with real-time LED display for intuitive monitoring and adjustment
• 43 L capacity stainless steel inner tank fabricated from 304-grade material for corrosion resistance and long-term chemical compatibility
• Dual-row, 16-well design with standardized 120 mm well diameter and reinforced four-ring sealing caps for secure vessel placement
• High-power 4000 W heating system enabling rapid thermal equilibration and recovery after sample loading
• Integrated mechanical timer with adjustable range from 0 to 999 minutes, supporting unattended operation under defined thermal protocols
• Epoxy-powder-coated cold-rolled steel outer housing providing enhanced protection against moisture, solvents, and routine lab abrasion
• Front-panel accessible water level indicator and overflow drain port for safe maintenance and refilling procedures

Sample Compatibility & Compliance

The HH-S16 accommodates standard laboratory glassware—including beakers, flasks, test tubes, and extraction thimbles—within its 16 wells. Its uniform thermal field ensures minimal axial or radial temperature gradients (< ±0.3°C across the bath plane at 37°C and 60°C, verified per ASTM E1112 practice). The unit supports GLP-aligned workflows through traceable temperature calibration documentation and repeatable setpoint execution. While not certified to ISO/IEC 17025 for metrological validation out-of-box, it is compatible with external NIST-traceable thermometry for user-performed verification. No hazardous substances are used in construction; materials conform to RoHS Directive 2011/65/EU. CE marking is not applicable as the device is manufactured for domestic Chinese market compliance (GB 4793.1–2019), though it meets essential safety criteria aligned with IEC 61010-1:2010.

Software & Data Management

The HH-S16 is a standalone analog-digital hybrid instrument without embedded firmware, network interface, or data logging capability. Temperature setpoints and timer values are entered manually via tactile push-button controls, and real-time bath temperature is displayed continuously on a three-digit LED screen. For laboratories requiring audit trails or electronic records, integration with external data acquisition systems (e.g., USB-connected thermocouple loggers or PLC-controlled SCADA networks) is supported via optional analog output (0–5 V or 4–20 mA signal, available upon request with OEM modification). The absence of onboard software eliminates concerns related to FDA 21 CFR Part 11 compliance—making the unit inherently suitable for regulated environments where manual entry and paper-based SOPs remain standard practice.

Applications

• Enzyme activity assays and protein denaturation studies requiring strict thermal consistency
• Preparation of culture media, buffer solutions, and reagent warm-ups prior to microbiological analysis
• Controlled hydrolysis, saponification, and esterification reactions in synthetic organic chemistry
• Accelerated stability testing of pharmaceutical formulations per ICH Q1A(R2) guidelines
• Drying and concentration of aqueous extracts in natural product isolation workflows
• Calibration of liquid-in-glass thermometers and digital probe sensors using fixed-point water baths
• Student laboratory instruction in physical chemistry, biochemistry, and analytical method validation

FAQ

What is the maximum recommended operating temperature for continuous use?
The HH-S16 is rated for sustained operation at temperatures up to 100°C. For optimal longevity of seals and electronics, prolonged use above 95°C should include periodic visual inspection of gasket integrity and ventilation clearance.
Can this water bath be used with corrosive or organic solvents?
No. The stainless steel tank is optimized for aqueous solutions only. Use of acetone, chloroform, ethanol above 70% v/v, or strong acids/bases may compromise passive oxide layer integrity and void warranty.
Is external calibration support provided by the manufacturer?
CZGY supplies a factory calibration certificate (temperature deviation at 37°C, 60°C, and 100°C) with each unit. On-site recalibration services are available through authorized regional partners in Asia-Pacific markets.
Does the unit include over-temperature or dry-run protection?
Yes. An independent mechanical high-limit thermostat cuts power if internal sensor readings exceed 105°C or if water level falls below minimum fill line, preventing heater damage.
What is the typical warm-up time from ambient to 60°C?
With a fully filled tank (43 L), average warm-up time is approximately 42–48 minutes, depending on ambient room temperature and initial water temperature.