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Address: Hi-tech Developing Industrial Area, Liuyang City,Changsha,Hunan Province,China
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Introduction
The Minimum Ignition Temperature Test Apparatus is a way of testing
the sensitivity of the ignition that the dust cloud is in the
heated environment. When a lot of dust is exposed in heating the
air and the air temperature is high enough, it may lead to
spontaneous combustion. This method can test the minimum ignition
temperature of combustible dust cloud.
Standard:
Technical parameters:
| 1 | Furnace operating temperature range | Room temperature ~ 800 ºC. The operating temperature can rise to 1000 ºC to clean the test chamber |
| 2 | emperature accuracy | ± 1% (higher than 500 ºC), ± 3% (lower than 300 ºC). |
| 3 | The pressure of the dispersion air chamber | 0 ~ 1 bar |
| 4 | The pressure accuracy of the air storage device | ± 5% |
| 5 | Size | 500X300X450 mm |
| 6 | Power supply | 230v / 50Hz or 110v / 60Hz |
Testing process
The Test is carried on the in Godbert-Greenwald furnace. The
heating furnace is consist of the vertical quartz tubes . The hole
is at the bottom of the tube.The glass observing room is connected
with sample fixing device at the top of the quartz tubes. The
compressed air from the tank blows the dust into the heating
furnace and the sample fixing device ,and then exposed into the
glass observing room and the quartz tubes .the heating furnace is
located on the holder . And you can observe the ignition appearance
from the bottom of the furnace. The test begins from the 500ºC. If
you observe the ignition appearance ,you shall decrease the
temperature at the 10ºC,until the ignition does not appear.
Results description
When the ignition occurs , the lowest temperature is recorded as
the minimum ignition temperature of the dust cloud .
The minimum ignition temperature of the test data information is
used to determine whether the surface temperature of the equipment
can cause the automatic fire of the exposed dust . It is an
important standard to evaluate the selection of the equipment at
the condition of the dusty environment . When using the minimum
ignition temperature testing data ,you shall leave a safety limit
for the small-scale test .
