Humidity tester C306H

water vapor permeabilitylaboratoryautomatic

The C306H is an infrared-sensor based water vapor transmission rate (WVTR) test system for medium- and high-barrier materials, designed in accordance with ASTM F1249 and ISO 15106-2. It performs automated WVTR testing on films, sheets and packaging materials across a wide range with high throughput and stable control.

Product Features

• Infrared sensor: Labthink-patented infrared sensor delivering an extended measurement range; non-consumable with long service life; built-in over-range warning and automatic protection.
• Accurate data: Dome-shaped test chamber and 360° air-circulation constant-temperature technology for improved temperature stability; each chamber includes a high-precision humidity sensor for real-time monitoring; automated control of gas flow, temperature and relative humidity.
• High efficiency: Six independent test cells with standard area 50 cm² enabling simultaneous testing of six specimens under identical conditions; automatic specimen clamping for consistent clamping force and improved airtightness.
• Intelligent control: 12" touch-screen tablet (Windows 11) with one-click automatic test mode (input temperature and humidity to start); chamber hood opens/closes automatically with audible and visual alerts.
• Safe and reliable: Built-in industrial computer for system security and reliable data storage; multiple intelligent sensors provide operational safety alerts; components from recognized global brands ensure stable performance.
• Space saving: Instrument width approximately one third of traditional six-cell instruments, reducing laboratory footprint.
• Powerful functions: Professional test mode with flexible control options; outputs include WVTR curve, transmission coefficient, temperature and humidity curves; ultra-wide test range with optional extended temperature range.

Test Principle
The pre-conditioned specimen is clamped in a test cell. Nitrogen with controlled relative humidity flows on the high-humidity side while dry nitrogen flows on the low-humidity side. Water vapor permeating the specimen is carried by the dry nitrogen to the infrared sensor; the sensor converts signals to water vapor concentration and WVTR is calculated.

Standards

• ASTM F1249
• ISO 15106-2
• GB/T 26253
• JIS K7129
• YBB00092003-2015

Applications

• Films: WVTR testing of plastic films, paper-plastic composite films, coextruded films, aluminized films, aluminum foils and aluminum-composite films.
• Sheets: WVTR testing of PP, PVC, PVDC sheets, metal foils, rubber pads, silicon wafers and other sheet materials.

Technical specifications

• Model: C306H
• Test range (standard area 50 cm²): 0.02 – 40 g/(m²·day)
• Optional MASK area ranges: 5 cm²: 0.2 – 400 g/(m²·day); 1 cm²: 1 – 2000 g/(m²·day)
• Resolution: 0.0001 g/(m²·day)
• Repeatability: 0.02 g/(m²·day) or 2%, whichever is greater
• Test temperature: 15 – 50 °C (standard), 5 – 60 °C (optional)
• Temperature fluctuation: ±0.15 °C
• Test humidity (within standard temperature range): 5 – 90% RH ±2% (up to 100% available)
• Test cells: 6 independent cells
• Specimen size: 4.6” x 4.6” (11.7 cm × 11.7 cm)
• Specimen thickness: ≤ 120 mil (≈ 3 mm)
• Standard test area: 50 cm²
• Carrier gas: 99.999% high-purity nitrogen (not supplied)
• Carrier gas pressure: ≥ 40.6 PSI / 280 kPa (instrument gas port: Φ6 mm PU tubing; customers to prepare supply accordingly)
• Port size: 1/8” metal tube
• Instrument dimensions: 23.6” H x 19.2” W x 25.9” D (60 cm × 49 cm × 66 cm)
• Power supply: 120 VAC ±10% 60 Hz or 220 VAC ±10% 50 Hz
• Net weight: 220 lbs (≈ 100 kg)
• Standard configuration: instrument mainframe, tablet, sampler, vacuum grease, Φ6 mm PU tubing
• Optional parts/functions: air compressor; DataShield™ (optional); GMP computer system requirement (optional); CFR21 Part11 (optional)