Product introduction:
A new term heat transfer index (HTI) has been introduced to avoid confusion with the thermal protective index (TPI) or other terms used in previous versions of this test. HTI calculated from the mean time in seconds to achieve a temperature rise of 24±0.2℃ when testing by this method using a copper disc and a starting temperature of 25±5℃. The heat transfer index provides a method of grading materials which does not imply that the material tested will give any precise protective time under actual use conditions.
The convective heat resistance test device is developed according to EN367 and ISO9151 test standards, and meets the requirements of the convective heat resistance test standard of domestic AQ 6103-2007 welder protective gloves. The test results are thermal protection index (HTI). The principle of the test is to measure the test time required for the back temperature of the sample to rise 12 or 24 degrees by the impact of flame on the bottom of the sample. The average value of the three tests is recorded as thermal protection index (HTI), which is used to evaluate the thermal protection performance of the protective clothing fabric.
Product parameters:
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Standards
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AQ 6103、 ISO 9151:1995、CSN EN 367:1992
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Application
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Safety Protection
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size
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600*100*600mm(W*H*D)
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Weight
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27KG
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Electrical requirements
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220V, 50HZ
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Installation
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Fume hood placement
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Time range
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0-100s
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Sample size
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140 x 140 mm
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Gas Source Requirements
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Propane and Air Compressor Gas
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Calorimeter diameter
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Φ40
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Testing environment
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25 +5℃
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Product Feature:
It can display flame temperature, measure temperature and time digitally.
The apparatus is designed and manufactured according to EN 367 and ISO9151 standards.
The apparatus consists of the burner, the cover sheet and the specimen holder with copper calorimeter.
The cover sheet and the specimen holder are controlled via pneumatic transmission which is automatically controlled by software.
A horizontally oriented test specimen subjected to an incident heat flux of 80KW/㎡from the flame of a Meker burner beneath it.
The heat passing through the specimen is measured by means of a small copper calorimeter on top of and contact with the specimen.
The time to record a temperature rise of 12 or 24℃ in the calorimeter is recorded in seconds.
The calorimeter cooling device shorten the test time.
The mean result for the three test specimens is calculated as the HTI.
The calibration of heat flow density of 80 kW/㎡is performed automatically by software instrument characteristics
Product application:
The convective heat resistance test device for protective materials is an instrument which is mainly used to measure the convective heat resistance of textiles, fire fighting supplies and other materials.
