Jianhu JH-THC Series Programmable Temperature & Humidity Chamber (-20°C to +150°C)

Overview

The Jianhu JH-THC Series Programmable Temperature & Humidity Chamber is an engineered environmental simulation system designed for precise, repeatable evaluation of material and product performance under controlled thermal and hygrothermal stress conditions. Based on forced-air convection architecture with dual independent PID-controlled refrigeration and humidification subsystems, the chamber delivers stable, uniform temperature distribution (±0.5°C) and humidity control (±2.5% RH) across its working volume. It operates on fundamental principles of psychrometric regulation and thermodynamic equilibrium—utilizing a stainless steel evaporator coil, ultrasonic humidifier with deionized water feed, and high-efficiency axial fans to maintain laminar airflow and minimize thermal gradients. This platform supports standardized test protocols defined in IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-30 (damp heat cyclic), JIS C 0021 (humidity testing), GB/T 2423 (Chinese national standards), and MIL-STD-810G Method 507.5 (temperature-humidity-vibration combined testing). Its primary function is not merely ambient conditioning but systematic acceleration of aging mechanisms—including polymer hydrolysis, solder joint fatigue, condensation-induced corrosion, and dielectric degradation—enabling reliability engineers to quantify failure thresholds and validate design margins prior to field deployment.

Key Features

• Programmable multi-segment test profiles with up to 99 cycles and 100 steps per cycle, supporting ramp-soak-hold sequences with variable rate control (0.1–10°C/min)
• High-stability humidity generation via ultrasonic atomization with integrated water level sensor and automatic drain flush to prevent mineral buildup
• Refrigeration system employing environmentally compliant R404A/R23 cascade configuration for extended low-temperature capability down to –20°C
• Double-wall insulated cabinet with vacuum-insulated panels and silicone door gasket ensuring thermal efficiency and minimal energy consumption
• Real-time monitoring of chamber internal conditions via calibrated Pt100 sensors (traceable to NIST standards) with automatic self-calibration diagnostics
• Comprehensive safety architecture including over-temperature cut-off, humidity overflow detection, motorized door interlock, and ground fault circuit interrupter (GFCI)

Sample Compatibility & Compliance

The JH-THC-B series accommodates a broad range of sample geometries—from printed circuit boards and automotive ECUs to pharmaceutical packaging, aerospace composites, and medical device enclosures—within standard chamber volumes (100 L to 1000 L). All models are constructed to meet ISO 9001-certified manufacturing processes and undergo factory verification per ASTM E74-22 (calibration of environmental chambers). The system supports GLP/GMP-aligned validation documentation packages, including IQ/OQ/PQ protocols, traceable sensor calibration certificates, and uncertainty budgets compliant with ISO/IEC 17025 requirements. Regulatory alignment extends to FDA 21 CFR Part 11-ready audit trails when paired with optional data acquisition software, enabling full electronic record integrity for life science and regulated manufacturing environments.

Software & Data Management

Equipped with an embedded 7-inch capacitive touchscreen HMI running real-time Linux OS, the chamber provides intuitive local operation with password-protected user roles (Operator, Engineer, Administrator). Optional PC-based software (Jianhu EnviroLog Pro v3.2) enables remote supervision via Ethernet or Wi-Fi, automated report generation (PDF/CSV), and integration with LIMS or MES platforms through OPC UA or Modbus TCP. All logged data—including temperature, humidity, setpoint deviation, alarm history, and program execution status—is time-stamped with microsecond precision and stored with cryptographic hash verification to ensure immutability. Audit trail functionality records every user action, parameter change, and system event with operator ID and timestamp, satisfying FDA 21 CFR Part 11 electronic signature and record retention mandates.

Applications

This chamber serves as a core tool in accelerated reliability testing workflows across multiple sectors: electronics manufacturers use it for JEDEC JESD22-A104 (temperature cycling) and A110 (highly accelerated stress testing); automotive suppliers perform ISO 16750-4 (climate resistance) and GMW3172 (thermal shock) validation; pharmaceutical firms apply it for ICH Q1A(R2) stability studies under long-term and accelerated storage conditions; and aerospace contractors conduct MIL-STD-810G Method 507.5 combined environmental stress screening. Additional use cases include material compatibility testing of adhesives and sealants, shelf-life determination of moisture-sensitive APIs, qualification of battery thermal management systems, and verification of IP-rated enclosure ingress protection under condensing humidity.

FAQ

What international standards does this chamber support out-of-the-box?
It natively executes test methods from IEC 60068-2, JIS C 0021, GB/T 2423, and MIL-STD-810G, with preloaded program templates and compliance documentation.
Can the chamber operate continuously at –20°C with 95% RH?
Yes—the refrigeration and humidification subsystems are independently optimized to maintain simultaneous extreme conditions without icing or condensate pooling.
Is third-party calibration certification available?
Yes—NIST-traceable calibration certificates with uncertainty statements are provided upon request, aligned with ISO/IEC 17025 accredited laboratories.
Does the system support automated pass/fail judgment against test specifications?
When integrated with EnviroLog Pro software, users can define tolerance bands and auto-generate compliance reports with statistical process control (SPC) charts.
What is the typical lead time for custom chamber configurations?
Standard models ship within 6–8 weeks; non-standard volumes, special materials (e.g., explosion-proof), or integrated vibration tables require 12–16 weeks with engineering review.