Jihepu MGY-30-200 Sealed High-Temperature Circulating Bath

Overview

The Jihepu MGY-30-200 Sealed High-Temperature Circulating Bath is a precision-engineered thermal management system designed for continuous, stable delivery of heated heat-transfer fluid to external process equipment. Unlike open-bath systems, this unit operates under a fully sealed circulation architecture—minimizing oxidative degradation of thermal oils and extending service life while maintaining consistent thermal performance across extended operating cycles. It employs resistive electric heating with integrated PID-based temperature regulation to achieve precise thermal control within ±1 °C over its full operational range (ambient to 200 °C). The device is purpose-built for integration with jacketed reactors, distillation columns, and other industrial or pilot-scale laboratory apparatus requiring reliable, high-temperature liquid circulation without exposure to ambient atmosphere. Its robust stainless steel fluid path ensures compatibility with common synthetic heat-transfer fluids—including silicone oils, aromatic hydrocarbons, and polyalkylene glycols—under sustained thermal load.

Key Features

• Sealed circulation loop design prevents thermal fluid oxidation and evaporation, significantly improving long-term fluid integrity and reducing maintenance frequency.
• High-capacity 30 L stainless steel reservoir with reinforced insulation and low-thermal-loss circulation piping (stainless steel insulated hoses, 2 × 2 m, 3/4″ BSP).
• Industrial-grade circulation pump delivering up to 30 L/min flow rate at 2.8 bar maximum pressure and 15 m head—suitable for multi-point distribution or elevated-loop applications.
• Dual-stage safety architecture: independent overtemperature cutoff (mechanical and electronic) with audible/visual alarm activation at preset thresholds.
• PID temperature controller with intuitive digital interface, adjustable ramp-soak profiles, and real-time setpoint/actual temperature display.
• Integrated air-bleed valve for initial system priming and degassing—designed for safe operation only during non-pressurized startup phase per manufacturer guidelines.
• Compliance-ready construction: all wetted parts conform to ASTM A240 Type 304 stainless steel specifications; electrical components meet IEC 61000-6-3 EMC standards.

Sample Compatibility & Compliance

The MGY-30-200 is compatible with a broad spectrum of thermally stable, non-aqueous heat-transfer media rated for continuous use up to 200 °C—including Dowtherm J, Marlotherm SH, and similar synthetic organic fluids. It is not intended for aqueous solutions or low-boiling-point solvents due to pressure and vaporization risks. While the unit itself does not carry CE or UL certification out-of-box, its mechanical and electrical architecture aligns with core requirements of ISO 13849-1 (safety-related parts of control systems) and EN 61010-1 (laboratory equipment safety). When deployed in GMP-regulated environments (e.g., pharmaceutical API synthesis), users may validate the system per IQ/OQ protocols against internal SOPs referencing USP Analytical Instrument Qualification and FDA 21 CFR Part 11 data integrity expectations where electronic logging is implemented via optional RS485/Modbus interface.

Software & Data Management

The standard configuration features a local digital controller with no embedded software stack or network connectivity. However, the unit supports analog 4–20 mA output (temperature signal) and digital Modbus RTU communication (optional RS485 module) for integration into centralized SCADA or DCS platforms. This enables remote monitoring of bath temperature, pump status, and fault conditions—facilitating audit-trail generation when paired with validated third-party data acquisition systems compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available). No onboard data storage or user-accessible firmware is provided; all calibration and operational logs must be maintained externally per GLP/GMP documentation requirements.

Applications

• Heating of jacketed glass or stainless steel reaction vessels in fine chemical and pharmaceutical process development.
• Thermal conditioning of condensers, reflux lines, and vacuum traps in high-boiling-point solvent recovery systems.
• Stabilization of temperature-sensitive analytical instrumentation requiring external thermal coupling (e.g., FTIR sample compartments, GC oven pre-heaters).
• Material testing setups involving controlled thermal ramping of polymer melts or composite curing fixtures.
• Pilot-plant scale-up support where reproducible, closed-loop thermal delivery is required across multiple unit operations.

FAQ

Can this unit be used with water or aqueous glycol solutions?

No. The MGY-30-200 is engineered exclusively for non-aqueous, high-boiling-point heat-transfer fluids. Water-based media pose unacceptable risks of vapor lock, pressure buildup, and seal degradation above 100 °C.

Is the circulation system truly leak-tight under thermal cycling?

Yes. All fluid-path joints utilize metal-to-metal sealing or high-temp FKM gaskets rated to 250 °C. Leak integrity is verified at 1.5× maximum working pressure during factory testing.

What maintenance intervals are recommended for sustained 200 °C operation?

Thermal fluid analysis every 500 operational hours; pump bearing inspection annually or after 2,000 hr runtime; PID sensor calibration biannually using NIST-traceable reference thermometers.

Does the unit include a built-in cooling function?

No. The MGY-30-200 is a heating-only system. For active cooling capability, a separate chiller or dual-temperature circulator model is required.

How is traceability ensured for temperature control in regulated environments?

Via external validation: users must perform periodic calibration of the internal PT100 sensor against a certified reference thermometer and document deviations per ISO/IEC 17025 procedures.