Jinhoo JTH-150P Temperature and Humidity Controlled Chamber
| Brand | Jinhoo |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Domestic OEM Manufacturer |
| Product Category | Domestic |
| Model | JTH-150P |
| Pricing | Available Upon Request |
Overview
The Jinhoo JTH-150P Temperature and Humidity Controlled Chamber is an engineered environmental test system designed for precise, repeatable simulation of controlled thermal and hygrothermal conditions. It operates on the reverse Carnot refrigeration cycle—comprising two isothermal and two adiabatic thermodynamic processes—to achieve stable cooling performance. Heat exchange occurs via a high-efficiency condenser and evaporator assembly, while expansion is regulated through a thermostatic expansion valve (TXV) or capillary tube system, depending on configuration. Temperature control employs Balanced Temperature Control (BTC), where the microprocessor-based PID controller dynamically modulates heater output in real time against continuous refrigeration operation—eliminating overshoot and minimizing thermal gradient deviation. Humidity regulation integrates a steam generator or ultrasonic humidifier with a dedicated dehumidification circuit (typically refrigerant-based or desiccant-assisted), enabling stable RH control across 20–98% RH at temperatures ranging from −20 °C to +150 °C (operational range dependent on model variant and load condition). The chamber’s inner chamber is constructed from SUS304 stainless steel, and the insulation layer uses high-density polyurethane foam (≥100 mm thickness) to ensure low thermal leakage and energy-efficient operation.
Key Features
- Microprocessor-based dual-channel PID controller with touchscreen interface and real-time data logging capability
- Balanced Temperature Control (BTC) architecture ensuring ±0.5 °C temperature uniformity and ±2.0 % RH stability (at 25 °C/60 % RH, empty chamber)
- Refrigeration system utilizing environmentally compliant R134a or R404A refrigerant, with energy modulation technology for optimized compressor cycling and reduced power consumption
- Stainless steel interior (SUS304), double-layer insulated door with anti-fog heating glass and magnetic seal for humidity retention
- Over-temperature, over-humidity, compressor overload, and water shortage protection circuits compliant with IEC 61000-6-2 EMC standards
- Standard RS485 communication port supporting Modbus RTU protocol for integration into centralized lab monitoring systems
Sample Compatibility & Compliance
The JTH-150P accommodates small-to-medium-sized samples up to 150 L internal volume—including electronic components, PCB assemblies, polymer specimens, optical lenses, pharmaceutical packaging, and precision instrumentation. Its chamber dimensions (W×D×H: 500 × 400 × 750 mm) support standard test fixtures and ISO/IEC 17025-compliant sample mounting configurations. The system meets essential requirements of GB/T 10586–2018 (Chinese national standard for environmental test chambers), and its control architecture supports audit-ready operation under GLP and GMP frameworks when paired with optional 21 CFR Part 11-compliant software modules. Humidity sensor calibration traceability follows ISO/IEC 17025-accredited procedures; optional NIST-traceable certificate available upon request.
Software & Data Management
The integrated controller supports local data storage (≥30 days of 1-minute interval logging) and export via USB flash drive in CSV format. Optional PC-based software (Jinhoo EnviroLog v3.x) enables remote monitoring, multi-chamber synchronization, alarm email/SMS notification, and automated report generation per ASTM E145, ISO 16750-4, or IEC 60068-2-30 test protocols. All data entries include timestamp, operator ID, and event flags—supporting full electronic audit trails required for FDA-regulated validation studies. Firmware updates are performed via secure USB or Ethernet, with version rollback capability and SHA-256 firmware signature verification.
Applications
- Accelerated aging tests for consumer electronics per JEDEC JESD22-A108
- Stability testing of medical device packaging under climatic stress (ISO 11607-1)
- Material property evaluation: dimensional stability of composites, moisture absorption kinetics of hygroscopic polymers
- Calibration and verification of hygrometers, thermistors, and data loggers
- Pre-conditioning of samples prior to mechanical or electrical testing (e.g., tensile, dielectric strength)
- Environmental stress screening (ESS) for automotive ECUs per AEC-Q200
FAQ
What is the standard warranty period for the JTH-150P?
The unit carries a 24-month parts-and-labor warranty from date of commissioning, extendable to 36 months with annual preventive maintenance contract.
Can the chamber be validated for IQ/OQ/PQ documentation?
Yes—Jinhoo provides factory-issued DQ/IQ templates and on-site OQ execution support by certified metrologists; PQ must be conducted by end-user or third-party accredited lab.
Is external water supply required for continuous humidity operation?
A built-in 5-L reservoir supports up to 72 hours of unattended operation at 60 % RH; for extended runs >48 h, optional deionized water feed kit (PN: JTH-WF-01) is recommended.
Does the system comply with CE marking requirements?
The JTH-150P conforms to EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU; CE Declaration of Conformity is supplied with shipment.
How is temperature uniformity verified during installation?
Jinhoo performs 9-point uniformity mapping (per IEC 60068-3-5) using calibrated PT100 sensors traceable to NIM (China National Institute of Metrology); report included in commissioning package.
