WVTA-P-1

WVTA-P-2

Automatic Water Vapor Transmission Analyzer

Model: WVTA-9601

The test methods cover the determination of water vapor transmission (WVT) of materials through paper, plastic films, PTFE membrane and other sheet materials.

Test dishes filled with distilled water in a controlled dry atmosphere, a constant humidity difference is generated between two sides of the test specimen, the water vapor permeates through the specimen and into the dry side, water vapor transmission rate and other parameters can be obtained by measuring the weight changes of the test dish in different time.

Principle of Cup Weighing Method.
Computer control, fully automatic test, one-key operation.
Single Chamber design, multiple test modes such as smart mode can be selected.
Auto Temperature and humidity control system.
Data checking trail and traceability.
System usage log record.
Built-in ambient temperature sensor and humidity sensor.
Traceable reference film calibration
Supports DSM system (DSM, lab data management system, optional).
5-level user authority management.

Model	WVTA-9601
Specimen Chamber	1
Test range	0.01 ~ 19,000 g/m²·24h (Standard)
Test accuracy	0.01 g/m²·24h
Weighing resolution	0.0001g
Temperature range	15°C ~ 60°C
Temperature accuracy	±0.1°C
Humidity range	10% – 95%RH, 90%RH (standard)
Humidity accuracy	±1%RH
Test area	28.26 cm²
Specimen size	Φ76 mm
Specimen thickness	≤ 3mm
Air flow rate	0.5 ~ 2.5m/s (customization available)
System chamber size	8L
Gas supply	Air, 0.2MPa ~ 1.0MPa
Power supply	AC 220V 50Hz
Dimension	330mm (L) x 600mm (D) x 340mm (H)
Net Weight	35kg

Standard accessories

Main system
Operate Software
Dish for Water Vapor Transmission Tests
Constant humidity control device
Communication cable
Calibration weight
Operate manual
Pressure regulator valve
Sampler, Desiccant, Ultrafiltration filter

Optional accessories

Personal Computer
Air compressor
Standard membrane
Desiccant
DSM lab data management system