LabCompanion PL-408 Temperature and Humidity Controlled Environmental Test Chamber
| Brand | LabCompanion |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | PL-408 |
| Instrument Type | Upright Chamber |
| Humidity Range | 20–98 % RH |
| Temperature Fluctuation | ±0.5 °C |
| Humidity Deviation | ±2.5 % RH |
| Heating Rate | ~3.5 °C/min (non-linear, unloaded, 20 °C to +150 °C) |
Overview
The LabCompanion PL-408 is a precision-engineered upright environmental test chamber designed for controlled simulation of temperature and humidity conditions in laboratory and industrial quality assurance environments. It operates on the principle of dual-loop independent control—separate PID-regulated refrigeration, heating, and humidification subsystems ensure stable, repeatable climatic profiles across extended test durations. The chamber employs a forced-air convection system with multi-directional airflow distribution to minimize spatial gradients, meeting ISO 16750-4, IEC 60068-2-1, IEC 60068-2-2, and ASTM D4332 requirements for environmental conditioning of materials, electronics, and packaging. Its operational envelope—spanning −40 °C to +150 °C and 20–98 % RH—is validated under non-linear, unloaded conditions per IEC 60068-3-5, supporting both steady-state stability testing and dynamic profile cycling (e.g., thermal shock with humidity overlay).
Key Features
- Independent dual-PID control architecture for simultaneous, decoupled regulation of temperature and relative humidity
- High-efficiency hermetic refrigeration system with eco-friendly R404A/R23 cascade configuration for reliable sub-zero operation down to −40 °C
- Steam-type humidification system with stainless-steel boiler and auto-drain function to prevent mineral buildup and ensure long-term RH accuracy
- Insulated double-wall construction with high-density polyurethane foam (≥100 mm thickness) and sealed magnetic door gasket for thermal integrity and minimal leakage
- Integrated over-temperature, over-humidity, and dry-run protection circuits compliant with IEC 61000-4 electromagnetic compatibility standards
- Front-accessible service panel with quick-release fittings for refrigerant lines, humidifier reservoir, and sensor calibration ports
Sample Compatibility & Compliance
The PL-408 accommodates samples up to 600 × 850 × 800 mm (W × H × D), with internal stainless-steel chamber walls (SUS304) and removable perforated shelves for flexible load configuration. It supports standardized test specimens per MIL-STD-810H Method 507.7 (humidity), Method 501.7 (high temperature), and Method 502.7 (low temperature). All control firmware and data logging meet GLP/GMP traceability requirements: real-time timestamping, user-access-level authentication, and audit trail generation conforming to FDA 21 CFR Part 11 Annex 11 principles. Calibration certificates are provided with NIST-traceable references for PT100 temperature sensors and capacitive RH transducers.
Software & Data Management
The chamber integrates with LabCompanion’s TCMS v4.2 software suite (Windows-based, USB/Ethernet interface), enabling programmable multi-segment profiles, real-time graphing, and automated report generation in PDF/CSV formats. Data logging resolution is configurable from 1 s to 60 min intervals; all records include metadata (operator ID, chamber ID, calibration status, alarm history). Optional Ethernet/IP connectivity supports integration into centralized MES or LIMS platforms via Modbus TCP or OPC UA protocols. Raw sensor outputs—including chamber air temperature, dew point, wet-bulb temperature, and calculated RH—are accessible via ASCII serial command set for third-party SCADA interoperability.
Applications
- Accelerated aging studies of polymer films, adhesives, and composite laminates per ASTM D3045 and ISO 11357
- Pre-conditioning of printed circuit boards (PCBs) and automotive ECUs prior to functional testing (ISO 16750-4)
- Stability testing of pharmaceutical packaging per USP and ICH Q1A(R2) guidelines
- Environmental stress screening (ESS) of aerospace components under combined thermal/hygroscopic loading
- Validation of moisture barrier performance in flexible food packaging (ASTM F1249)
- Calibration verification of portable hygrometers and thermometers against primary reference standards
FAQ
What is the maximum allowable load mass without compromising temperature uniformity?
The chamber maintains ±1.5 °C uniformity (per IEC 60068-3-5) with up to 30 kg of inert thermal mass distributed evenly on shelves. For active electronic loads, derating is required—consult the Thermal Load Derating Chart in Section 4.2 of the Operation Manual.
Can the PL-408 perform rapid temperature transitions while maintaining constant RH?
Yes—within its specified operating range, it supports ramp-and-soak profiles with concurrent RH hold. Transition rates above 3 °C/min may induce transient RH deviation (>±5 % RH) until equilibrium reestablishes; this behavior is documented in the Dynamic Response Characterization Report (Ref. LC-TechNote-PL408-RH-TR-2023).
Is remote monitoring supported via cloud platform?
Local network monitoring is native via TCMS v4.2. Cloud-based telemetry requires optional LabCompanion Edge Gateway (model EG-TCM-01), which provides TLS 1.2-encrypted MQTT transmission to AWS IoT Core or private Azure IoT Hub instances.
How often must the RH sensor be recalibrated?
Annual recalibration is recommended under GLP conditions. A two-point verification (11 % RH saturated LiCl, 75 % RH saturated NaCl) can be performed in-house using NIST-traceable salt kits; full recalibration requires factory service or accredited third-party labs.
Does the unit comply with CE marking requirements for export to the EU?
Yes—the PL-408 carries CE marking per 2014/30/EU (EMC Directive), 2014/35/EU (LVD Directive), and 2011/65/EU (RoHS), with technical documentation available upon request for customs clearance.
