Hengping CH1015T Transparent Super Constant-Temperature Bath

Overview

The Hengping CH1015T Transparent Super Constant-Temperature Bath is a precision liquid temperature control system engineered for stable, uniform thermal environments in laboratory and industrial testing applications. Designed with a fully transparent four-sided borosilicate glass bath chamber, the CH1015T enables real-time visual monitoring of sample behavior—critical for kinetic studies, dissolution testing, viscosity measurements, and reaction monitoring where optical access is essential. It operates on the principle of forced-liquid circulation via an integrated external pump, maintaining setpoint accuracy through high-gain microprocessor-based PID feedback control. Unlike basic immersion thermostats, the CH1015T delivers enhanced thermal homogeneity (<±0.05 °C stability) across its 15-liter working volume, making it suitable for applications requiring ISO/IEC 17025-compliant calibration traceability and GLP-aligned experimental reproducibility.

Key Features

• Four-sided transparent bath chamber constructed from chemically resistant borosilicate glass for unobstructed sample observation and optical compatibility with spectrophotometric or imaging setups.
• Microprocessor-controlled PID temperature regulation with 0.1 °C display resolution and dynamic compensation for load-induced thermal lag.
• High-flow external circulation system (10 L/min) supporting auxiliary equipment such as viscometers, calorimeters, or jacketed reactors via standardized 1/4″ NPT or G1/4″ fittings.
• Stainless steel internal tank structure with corrosion-resistant insulation and over-temperature cut-off protection compliant with IEC 61000-6-2 EMC standards.
• Compact footprint (370 mm × 340 mm × 480 mm) optimized for benchtop integration in QA/QC labs, university teaching facilities, and R&D pilot stations.

Sample Compatibility & Compliance

The CH1015T accommodates a wide range of sample containers—including standard glass beakers (up to 1 L), U-tube viscometers, immersion probes, and custom reaction vessels—within its 215 mm × 170 mm × 200 mm open bath aperture. Its temperature range (RT +20 °C to 100 °C) supports ASTM D445 (kinematic viscosity), USP environmental qualification, and ISO 17025 clause 5.4.2 thermal stability requirements. The unit meets GB/T 26809–2011 (Chinese national standard for constant-temperature baths) and incorporates dual-level safety interlocks: mechanical thermostat override and electronic thermal fuse. While not intrinsically rated for hazardous locations, it is routinely deployed in non-explosive zones per IEC 60079-0 when used with compatible heat-transfer fluids (e.g., water, 30% ethylene glycol/water mix).

Software & Data Management

The CH1015T operates as a standalone analog-digital hybrid instrument with no proprietary software dependency. All operational parameters are configured and monitored via front-panel LED interface. For integration into automated workflows, optional RS-485 Modbus RTU output (available upon request) enables connection to SCADA systems, LabVIEW-based DAQ platforms, or LIMS via industry-standard protocols. Audit-trail-capable data logging requires external hardware; however, the unit’s thermal stability performance supports 21 CFR Part 11-compliant validation when paired with validated third-party acquisition software and calibrated reference thermometers (e.g., Fluke 1523 with accredited calibration certificate).

Applications

• Calibration of temperature-sensitive sensors (RTDs, thermistors, infrared pyrometers) against NIST-traceable references.
• Dissolution testing per USP and Ph. Eur. 2.9.3 using paddle/basket apparatus with visual confirmation of tablet disintegration.
• Thermal aging studies of polymer films, adhesives, and coatings under controlled oxidative conditions.
• Pre-conditioning of reference standards prior to rheological or DSC analysis to minimize thermal history effects.
• Support bath for UV-Vis spectrophotometers requiring stabilized cuvette temperature during kinetic assays.

FAQ

What heat-transfer fluids are compatible with the CH1015T?

Deionized water is recommended for operation up to 80 °C; for extended high-temperature use (80–100 °C), a 30% aqueous ethylene glycol solution is advised to suppress evaporation and oxidation.
Is the external circulation pump adjustable?

The pump operates at fixed flow rate (10 L/min); flow modulation requires an inline needle valve or variable-frequency drive retrofit—not supplied by default.
Can the CH1015T be used for sub-ambient cooling?

No. This model is a heating-only bath with minimum operating temperature at ambient +20 °C; cryogenic operation requires dedicated refrigerated circulators (e.g., Huber Unichiller series).
Does the unit include a calibration certificate?

Factory calibration is performed using a NIST-traceable reference thermometer; a test report (not full ISO/IEC 17025 certificate) is provided with shipment.
What maintenance intervals are recommended?

Biannual inspection of pump seals, annual replacement of bath fluid, and quarterly verification of temperature uniformity using a multi-point probe array per ASTM E742.