CH1006 Super Constant-Temperature Bath

Overview

The CH1006 Super Constant-Temperature Bath is a precision-engineered thermal control system designed for laboratory applications requiring stable, uniform, and reproducible temperature environments. Operating on the principle of forced convection via an integrated high-flow circulation pump, the bath maintains setpoint accuracy through closed-loop feedback control using a calibrated Pt100 resistance temperature detector (RTD). Its operational range—from ambient +5 °C up to 95 °C—covers critical requirements for enzymatic assays, viscometry calibration, spectrophotometer cuvette thermostating, and material stability testing. The unit’s compact footprint (210 × 370 × 400 mm) and 6-liter stainless-steel reservoir enable seamless integration into analytical workstations, fume hoods, or QC benchtop configurations without compromising thermal performance or safety integrity.

Key Features

• Precision microcomputer-based PID temperature controller with real-time digital display (0.1 °C resolution) and programmable setpoint retention
• High-stability thermal regulation: ±0.05 °C temperature fluctuation under steady-state conditions at nominal load
• Imported Pt100 platinum RTD sensor offering long-term drift <0.02 °C/year and NIST-traceable calibration compatibility
• Dual-mode circulation architecture supporting both internal recirculation and external loop connection (via standard 1/4″ BSP ports) for integration with rotary evaporators, refractometers, or flow cells
• Robust 304 stainless-steel construction for inner tank, lid, and exterior housing—resistant to corrosion from water, glycol–water mixtures, and low-concentration organic solvents
• Integrated safety subsystems including open-circuit (break-wire) detection for sensor failure and independent over-temperature cutoff at 105 °C
• Low-noise, maintenance-free magnetic-drive circulation pump delivering consistent 8 L/min flow rate across full temperature range

Sample Compatibility & Compliance

The CH1006 accommodates standard laboratory vessels—including 10–50 mL glass cuvettes, 100–500 mL jacketed reactors, and immersion probes—within its 150 × 160 mm opening and 150 mm depth. Its design conforms to IEC 61010-1:2010 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and meets CE marking requirements for electromagnetic compatibility (EMC Directive 2014/30/EU) and low-voltage safety (LVD Directive 2014/35/EU). While not certified for hazardous area use, the bath supports GLP-compliant workflows when paired with validated temperature mapping protocols and audit-ready log files (see Software section). It is routinely deployed in ISO/IEC 17025-accredited testing laboratories for instrument qualification per ASTM E2251-22 (Standard Specification for Liquid-in-Glass Thermometers) and USP (Thermal Analysis).

Software & Data Management

The CH1006 operates as a standalone analog-controlled system with no embedded data logging or USB/RS232 interface. However, it is fully compatible with third-party temperature monitoring platforms via its analog 0–5 V or 4–20 mA output (optional accessory). When integrated with validated PC-based acquisition software—such as LabVIEW™ with NI DAQ modules or MATLAB® Instrument Control Toolbox—the unit supports time-stamped temperature trace recording, alarm event tagging, and export to CSV or TDMS formats. All recorded datasets comply with FDA 21 CFR Part 11 requirements when used in conjunction with electronic signature-enabled systems and appropriate audit trail configuration. Routine calibration verification follows ISO/IEC 17025 clause 6.6, utilizing reference thermometers traceable to NIST SRM 1750.

Applications

• Calibration of digital thermometers, thermocouples, and RTDs against a stable thermal reference
• Temperature control for UV-Vis spectrophotometers, fluorescence readers, and polarimeters during kinetic studies
• Pre-conditioning of polymer melts and pharmaceutical excipients prior to rheological or DSC analysis
• Stabilization of electrochemical cells and conductivity meters during conductivity or pH measurements
• Supporting ASTM D2857 (FTIR spectroscopy), ASTM D445 (kinematic viscosity), and ISO 3104 (petroleum products) test methods
• Use as a thermal source in custom-built calorimetry rigs or heat-transfer coefficient validation setups

FAQ

Is the CH1006 suitable for oil bath operation?

Yes—its temperature range (+5 °C to 95 °C) and stainless-steel construction support use with silicone oils and low-volatility heat-transfer fluids. Always verify fluid compatibility and flash point relative to maximum operating temperature.
Can external sensors be connected for independent temperature verification?

The unit does not include native analog input, but its 0–5 V output allows correlation with external reference probes; recommended practice is to place a calibrated secondary Pt100 sensor directly in the bath medium for routine verification.
Does the CH1006 meet GMP documentation requirements?

While the hardware itself is not GMP-certified, it supports GMP-aligned operations when incorporated into a documented IQ/OQ protocol, accompanied by calibration certificates, preventive maintenance logs, and temperature mapping reports.
What is the typical warm-up time to reach 60 °C from 25 °C?

Approximately 12–15 minutes under no-load conditions; time increases linearly with thermal mass of immersed equipment or sample volume.
Is service and spare parts support available outside mainland China?

Yes—authorized global distributors provide technical documentation, pump motor replacements, PID controller modules, and sensor assemblies with lead times under 4 weeks ex-warehouse.