Humidity tester C390H

controltemperaturewater vapor permeability

The C390H is a laboratory water vapor transmission rate (WVTR) test system based on the infrared sensor method, designed for accurate measurement of moisture barrier properties of films, sheets, packages and related materials.

Overview

• Infrared sensor method compliant with ISO 15106-2 and ASTM F1249.
• Patented three-cell integrated test block enabling simultaneous or independent testing of three specimens under identical conditions.
• Automated control of temperature, humidity and carrier gas flow for stable, repeatable results.

High precision

• Next-generation infrared sensor with increased sensitivity and stability, reducing calibration frequency.
• Integrated three-cell block with optimized hydrodynamic and thermodynamic design for uniform measurements across cells.
• Independent temperature and humidity sensors per cell and precise automatic control of environmental parameters.

Efficiency & productivity

• Simultaneous testing of up to three specimens to increase throughput and support parallel testing strategies.
• Automatic test modes and environmental control reduce operator intervention and manual monitoring.

Operation & data management

• 12" touchscreen interface running Windows 11 for test setup and monitoring.
• Optional DataShieldTM software for centralized, secure data management and multiple export formats; LAN/Wi‑Fi support available.

Principle of test

• Sample is mounted between a dry chamber (swept by dry nitrogen) and a humid chamber. Water vapor permeating the sample is carried to the infrared sensor by the carrier gas; the sensor signal is analyzed to calculate WVTR. For packaged samples, dry nitrogen flows inside the package while the exterior is held at controlled humidity.

Standards

• ISO 15106-2
• ASTM F1249
• GB/T 26253
• JIS K7129
• YBB 00092003-2015

Applications

• Films: plastic films, paper–plastic laminates, coextruded films, metalized films, aluminium foil composites, fiber-reinforced laminates.
• Sheets: PP, PVC, PVDC, metallic foils, rubber pads, silicon wafers.
• Packaging: plastic containers, pouches, coated cartons, vacuum bags, metal cans, cosmetic tubes, food packaging.
• Extended uses: closures, photovoltaic backsheet films, plastic tubes (cosmetics), blister packs, plastic fuel tanks, battery housings.

Specifications / Technical data

• Model: C390H
• Standard test range (g/(m²·day)): 0.005 ~ 40
• Optional extended range (g/(m²·day)): 0.005 ~ 100
• Alternative units (g/(100in²·day)): 0.0003 ~ 2.6
• Package range (g/(pkg·day)): 0.000025 ~ 0.2
• Resolution: 0.0001 g/(m²·day)
• Repeatability: 0.005 g/(m²·day) or 2% (whichever is greater)
• Test temperature: 10 ~ 55 °C ±0.2 °C
• Test humidity: RH 5% ~ 90% ±1% (100% possible)
• Test cells: 3
• Sample size: 108 mm × 108 mm
• Sample thickness: ≤ 3 mm
• Standard test area: 50 cm²
• Carrier gas: High-purity nitrogen 99.999% (not supplied)
• Required carrier gas pressure: ≥ 0.28 MPa (40.6 psi)
• Port size: 1/8" metal tube
• Optional functions: package test (max. 3 L), DataShieldTM, GMP-compliant computer system, CFR21 Part11 compatibility (options)