Humidity tester C301B

water vaporgas flowfor medical devices

C301B Water Vapor Transmission Rate Test System is an infrared-sensor based instrument designed to determine water vapor transmission rate (WVTR) of barrier materials with high and medium moisture barrier properties, in accordance with ASTM F1249 and ISO 15106-2. It is applicable to measurement of WVTR for plastic films, sheets, paper, packages and related packaging materials used in food, pharmaceutical, medical devices, consumer goods, photovoltaic and electronic industries.

Product Features

• Equipped with Labthink patented infrared sensor, conforming to ASTM F1249; non-consumable type with ultra-long service life.
• Supports temperature control to perform tests under varying conditions.
• Built-in high-quality stainless steel test cell with improved sealing performance.
• Imported manual isolation valve and flow regulator for improved sealing reliability and reduced failure rate.
• Industrial computer-style design: compact footprint and efficient cooling.
• Reference film supplied for rapid calibration.
• System uses single-chip microcomputer control and can operate independently.
• Test reports exportable in common formats such as EXCEL and PDF.
• Supports micro printer for automatic printing of test data (optional).
• Equipped with RS232 interface for connection to PC software for curve analysis, data storage and report printing (optional).

Test Principle
The pre-conditioned specimen is clamped in the test cell; nitrogen with stable relative humidity flows on one side of the specimen while dry nitrogen flows on the other side. Due to the humidity gradient, water vapor permeates through the specimen from the high-humidity side into the low-humidity side and is carried to the infrared sensor by the dry nitrogen flow. The infrared sensor analyzes electrical signals generated by the water vapor to calculate water vapor concentration and the water vapor transmission rate.

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, aluminum foil composite films, glass-fiber aluminum foil composite films and related materials.
• Sheets
  WVTR testing of PP, PVC and PVDC sheets, metal foils, rubber pads, silicon wafers and other sheet materials.

Technical Specifications

• Table 1 — Test Parameters (C301B)
  • Test range (g/(m²·day), standard area 50 cm²): 0.1–40
  • Resolution (g/(m²·day)): 0.1
  • Test temperature (°C): 15–50
  • Temperature resolution (°C): 0.1
  • Temperature fluctuation (°C): ±0.5
  • Test humidity (%RH): 4%RH–100%RH ±2% (saturated salt solution)
  • Extended function: GMP Computer System requirement (Optional)
• Table 2 — Technical Specifications
  • Test Cell: 1 Cell
  • Specimen Size: 3.8” × 3.8” (9.7 cm × 9.7 cm)
  • Specimen Thickness: ≤ 120 mil (3 mm)
  • Standard test area: 50 cm²
  • Test Gas: 99.999% high purity nitrogen (outside supply scope)
  • Gas Pressure: 7.2 PSI / 50 kPa
  • Port Size: 1/8” metal tube
  • Instrument Dimension: 12.9” H × 16.9” W × 15.7” D (33 cm × 43 cm × 40 cm)
  • Power Supply: 120 VAC ±10% 60 Hz / 220 VAC ±10% 50 Hz (one of two)
  • Net Weight: 50 lbs (23 kg)
• Table 3 — Product Configuration
  • Standard Configuration: Instrument mainframe, TC03 temperature control device, porous ceramic plate, sampler, vacuum grease.
  • Optional Parts: Professional software, GMP computer system requirement, micro-printer.