Thermal and Water-vapour Resistance Tester

• 

Introduction
The instrument is a special measurement device used for measurement of thermal and water-vapour resistance under steady-state conditions („sweating guarded-hotplate test“) oftextiles according to ISO 11092.

Working principle
The test method, as described in ISO 11092, is based on measurement of the heat losses through the sample in stable temperature (thermal resistance). Sample is placed on thehot plate; the hot plate is surrounded with active heat shields on all sides except for the side with the sample. Electrical power required to hold the hot plate temperature stable ismeasured and converted to temperature resistance of the sample: the better temperature resistance (better insulation), the lower power is needed.
The sample can be precisely moisturized in order to simulate human perspiration (and measure water-vapour resistance). To achieve this, the hot plate is porous and water can bepumped into the assembly. A digital regulator holds constant level of water/vapour mix in the hot plate assembly. The sample does not soak up with water as the sintered material of the hot plate is permeable only to water vapour.
The sample gets wet with the water vapour and is chilled with a wind, simulated with tangential fans: just like when wearing sweaty clothes. The air speed and turbulent flow areelectronically regulated. The water-vapour resistance is then measured from the hot plate heating power requirements.

Structure
The device consists of two parts: the hot plate device unit (HPD) and a trolley. The HPD is inserted into a customer-supplied climatic chamber. The trolley is then connected with the HPD by means of a water hose and an electrical connector.

Features

WATER CIRCUIT wets the sample. As the sample dries, the device adds water under the porous hot plate. An insertion of a cold water can cause inaccurate results, so we heat the water in a two-stage pre-heater.

UNIFORM HEATING of the hot plate is important for accurate results: we use copper layer to achieve high uniformity. In addition, our temperature regulators measure temperature with 0,018 °C resolution.

EQUIPMENT DRAWER
The trolley includes an equipment drawer and a shelf to store all documents and small parts.

USE YOUR OWN CLIMATE CHAMBER
The device fits in all climate chambers that can accommodate 550x430x600 mm (customizable).

RUNS WINDOWS
No special computer needed. We use a Windows 10 based touch notebook computer with Ethernetand Wi-Fi: it would be easy to store the reports on your network.
The measurement application isfree, in English or Czech. We caneven do remote support!

Другие товары поставщика

	Dry Cleaning And Washing Cylinder	Dry Cleaning And Washing Cylinder Testing Standards: AATCC 162, 16 CFR Part 1610 Applications: Dry Cleaning and Washing Cylinder is designed for de...
	Тестер огнестойкости маски	огнестойкости респиратора Машинадляиспытания медицинских масок на огнестойкостьпредназначена для определения огнестойкости медицинских масок для ли...
	Thermal Contact Tester	The instrument is designed for the assessment of materials and material combinations that are exposed to a heat radiation source.In procedure A exp...
	carpet flammability equipment	Standards:BS 4790, ISO 6925, BS 6307Applications:The Flammability Tester is used to test the effects of a small source of ignition on floor coverin...
	Tape abrasion tester	The RCA Abrasion Wear Tester is used to test surfaces for resistance to abrasion and wear. Typically used on painted or plated organic finishes, fo...

Похожие товары

	Ureaplasma Urealyticum Fluorescent Polymerase Chain Reaction Diagnostic Kit	Продавец: Daan Gene Co., Ltd.	Ureaplasma urealyticum is a type of bacteria that can cause infection of the urinary tract and va...
	Pathology Test	Продавец: Daan Gene Co., Ltd.	What Is Pathology Diagnosis? Pathology is focusing on the nature, cause, origin, and development...
	Low Power SPD	Продавец: Shanghai Chenzhu Instrument Co., Ltd.	The low voltage surge protection deviceis designed to prevent transient surge conditions. T range...
	Intrinsic Isolated Barrier	Продавец: Shanghai Chenzhu Instrument Co., Ltd.	Isolated barrier uses intrinsically safe explosion-proof and functional safety technologies and a...
	GS8500-EX Series Intrinsic Safety Barrier	Продавец: Shanghai Chenzhu Instrument Co., Ltd.	GS8500-EX range functional safety isolated barriers are CHENZHU's hit products, which obtained th...