Water Vapour Permeability Tester LWPT-T2010

Introduction

Water Vapour Permeability Tester uses the wet cup method and operates at a steady speed of 2 rpm. It uses a precision drive system to rotate eight containers, each containing water reservoirs and covered with a standard permeable fabric. The tester has an for a reliable operation. Also, it features an adjustable counter for precise test control. Our tester is designed to assess how resistant textiles and textile composites, especially protective and action wear fabrics, are to water vapour penetration.

This water testing equipment is designed to meet the rigorous requirements of modern laboratory operations, ensuring high precision, reliability, and ease of use for various experimental applications.

Applications

Water Vapour Permeability Tester is used to test water vapour permeability of textiles, especially for performance fabrics like activewear and protective clothing. It is ideal for quality control, R&D, and compliance with standards such as BS 7209.

Specifications

Method	Wet cup method
Wet Cups	8 pieces
Rotation Speed	2 rpm
Counter Type	Adjustable
Display
Current	3 A
Power Supply	220/110 V 50/60 Hz
Dimension	540 × 540 × 470 mm
Net Weight	15 kg

Features

Automatic stop function

Supports multiple cup types

Foothold at the bottom for smooth operation

Refined mechanical structure

FAQs

1. What are the key factors to consider when selecting this water testing equipment for laboratory use?

When selecting this water testing equipment, key factors include: 1) The instrument's precision and accuracy to meet experimental requirements; 2) Compatibility with the types of samples and applications you will be working with; 3) Ease of use and maintenance requirements; 4) Safety features to protect operators and samples; 5) Calibration and certification requirements; 6) Cost-effectiveness and long-term reliability; 7) Technical support and service availability from the supplier. Evaluating these factors ensures that the instrument meets your laboratory's specific needs.

2. How often should this water testing equipment be calibrated to ensure accurate results?

It is recommended to calibrate this water testing equipment at least once every 6-12 months under normal usage conditions. More frequent calibration (every 3-6 months) may be necessary if: 1) The instrument is used continuously for extended periods; 2) It is exposed to harsh environmental conditions (temperature fluctuations, humidity, dust); 3) It is used for critical applications requiring high precision; 4) The instrument has been moved or subjected to physical shock; 5) Calibration checks indicate significant deviations from standard values. Always follow the manufacturer's calibration guidelines.

3. What are the common maintenance procedures required for this water testing equipment?

Common maintenance procedures include: 1) Regular cleaning of the instrument's exterior and sample contact surfaces to prevent contamination and ensure proper operation; 2) Inspection of moving parts (if applicable) for wear and lubrication as recommended by the manufacturer; 3) Replacement of consumable parts (filters, bulbs, reagents) according to usage guidelines; 4) Verification of performance parameters (temperature, pressure, voltage) regularly; 5) Storage of the instrument in a clean, dry environment when not in use; 6) Keeping a maintenance log to track service activities and identify potential issues early; 7) Following the manufacturer's specific maintenance schedule for optimal performance and longevity.

4. Can this water testing equipment be used with different types of samples, and are there any compatibility considerations?

Yes, this water testing equipment can be used with a variety of sample types, but compatibility considerations are important: 1) Check if the instrument's materials are compatible with the chemical composition of your samples (avoid corrosive or reactive substances that may damage the instrument); 2) Ensure that the sample volume and concentration are within the instrument's recommended range; 3) For biological samples, consider sterility requirements and potential cross-contamination risks; 4) For volatile or hazardous samples, ensure proper ventilation and safety precautions are in place; 5) Consult the manufacturer's documentation for specific sample compatibility guidelines, and perform compatibility tests with new sample types before regular use.

5. What should be done if the water testing equipment malfunctions or produces inconsistent results?

If malfunctions or inconsistent results occur: 1) First, check the instrument's user manual for troubleshooting guidelines specific to the issue; 2) Verify that the instrument is properly calibrated and within its calibration period; 3) Inspect for obvious issues such as loose connections, damaged parts, or incorrect settings; 4) Clean the instrument thoroughly to remove any contamination that may affect results; 5) Repeat the experiment with a known standard sample to determine if the issue is with the instrument or the sample; 6) If the problem persists, discontinue use of the instrument to prevent further damage or inaccurate results; 7) Contact technical support or a qualified service technician for diagnosis and repair, providing details of the issue and any troubleshooting steps already performed.

1. What is the primary purpose of the Water Vapour Permeability Tester ?

Water Vapour Permeability Tester is specifically designed to evaluate the water vapor permeability of textiles and textile composites. It measures the resistance of materials to moisture transmission, which is a critical factor in determining the breathability and comfort of performance fabrics such as those used in protective clothing, activewear, medical apparel, and military uniforms. By accurately simulating real-use conditions, it helps manufacturers and researchers ensure that their fabrics provide adequate moisture regulation and user comfort.

2. How does the wet cup method function in the Water Vapour Permeability Tester ?

Water Vapour Permeability Tester employs the wet cup method, a standard and widely accepted procedure in textile testing. In this method, the tester rotates eight cups containing water, each sealed with a test fabric on top. As the water inside the cups attempts to evaporate, it passes through the fabric membrane, and the rate of this vapor transmission is measured. The reduction in weight due to water loss is tracked over time, allowing calculation of the Water Vapor Transmission Rate (). This method replicates high-humidity scenarios, offering a practical evaluation of a fabric’s performance in real-world settings.

3. Why is the rotation speed of 2 rpm significant in the Water Vapour Permeability Tester ?

The steady rotation speed of 2 rpm in the Water Vapour Permeability Tester is essential for maintaining consistent airflow around each test cup. This controlled motion prevents stagnant air layers from forming over the test fabrics and ensures a uniform evaporation rate, which enhances the accuracy and repeatability of the results. A consistent speed also helps simulate the mild air circulation found in many garment-use environments, making the test conditions more realistic and the data more relevant for product development.