FZ/T 98020-2019 in English

VALID

Fabrics water-vapor permeability tester

Issued on:2019-12-24
Implemented on:2020-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $170.00
$165.00

Standard No:	FZ/T 98020-2019
Document status:	VALID
Title in English:	Fabrics water-vapor permeability tester
Title in Chinese:	织物透湿性能试验仪
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2019-12-24
Implemented on:	2020-07-01
ICS Classification:	59.120.99-Other textile machinery
Chinese Classification:	W98-Textile testing instrument
Professional Classification:	FZ-Textile
Related Keywords:	water-vapor permeability tester introduction analysis fabric water vapor permeability tester standard test environments key technical requirements test environment control system article high temperature environments
Related Topics:	Fabric Air Permeability Tester Moisture meter performance Fabric Air Permeability Tester Wet and dry performance performance heat meter Bioenergy meter penetration test Air permeability tester Moisture permeability test box Oxygen Permeameter Air permeability tester Air permeability tester Viscosity tester Fabric Testing Instruments v+ instrument performance Humidity Tester Humidity Tester Hygrometer Fabric transmittance Air permeability tester Material Index Tester dehumidifier Electrical Performance Tester moisture permeability Five performance tester Thermal physical property tester Thermal physical property tester Hygrometer Sexual solid tester energy biometer Standard Humidity Test Permeameter instrument Performance tester Test instrument capability fabric breathability Transdermal device iSO fabric is breathable Testing of fabric thermal insulation performance tester Air permeability tester purchase Osmometer Performance Verification Fabric transmittance test Transdermal Diffusion Tester Quality Transdermal diffusion tester

本标准规定了织物透湿性能试验仪的基本功能和参数、要求、试验方法、检验规则及标志、包装、运输和贮存。
本标准适用于采用吸湿法或蒸发法测定织物透湿性能的试验仪。

Introduction

Analysis of the core content of the standard

Technical parameters	FZ/T 98020 requirements	Comparison with GB/T 12704.1	Test significance
Temperature control accuracy	±0.1℃	±0.5℃	Ensure the performance evaluation of fabrics under different climatic conditions
Humidity control range	30%-98% RH	50%-95% RH	Covering the testing needs of extreme hot and humid environments
Wind speed uniformity	±0.02m/s	Unspecified	Eliminate the impact of airflow disturbance on test results

Detailed explanation of key technical requirements

Test environment control system

Article 3.1.2 of the standard clearly requires that the Fabric Water Vapor Permeability Tester must support four standard test environments:

High temperature and high humidity: 38℃±2℃/90%±2% RH (simulated tropical climate)
High temperature and low humidity: 38℃±2℃/50%±2% RH (simulated desert environment)
Normal temperature and humidity: 23℃±2℃/50%±2% RH (standard laboratory conditions)
Special storage conditions: 20℃±2℃/65%±2% RH (textile storage environment)

In actual applications, a sportswear company compared the test data under 38℃/90%RH and 23℃/50%RH conditions and found that the moisture permeability of its quick-drying fabrics in high temperature environments increased by 27%.

Special requirements for instrument structure

Article 4.3 makes strict provisions for the test chamber:

Test port diameter: 60±0.1mm (tolerance is only 0.17%)
Specimen clamping distance: 22±0.2mm
The installation position of the wind speed sensor is 10±1mm from the sample surface

This precision design can effectively avoid vapor diffusion anomalies caused by edge effects and ensure the repeatability error of the test results is <3%.

Recommendations for the implementation of the standard

Key points for laboratory construction

It is recommended to use a dual cold trap dehumidification system to meet the requirements of rapid humidity switching (Article 4.6.3 requires a humidity change rate of ≤4%RH)
An air curtain isolation device should be installed in the test area to prevent people from moving around and interfering with the wind speed field (Article 4.7.1 stipulates wind speed uniformity)
Regular calibration must include three-dimensional spatial temperature field scanning (the 8-point verification method required by Article 5.7.1)

Troubleshooting

When test results fluctuate, it is recommended to follow the following process to troubleshoot:

Check the wear of the sample sealing ring (Article 4.3.5 of the standard)
Verify the zero drift of the wind speed sensor (Article 5.8.2 requires a sampling frequency of 1 minute)
Calibrate the temperature and humidity sensor response time (Clause 4.4.1 requires 30 minutes of stabilization time)

More samples: NB/T 47013.2-2015 YD/T 3934-2021 GB 18306-2015

Sample only — not a preview of FZ/T 98020-2019