ISO/IEC 80079-20-2 Combustible Dust Minimum Ignition Temperature
Tester
Introduction:
This machine 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:
EN 50281-2-1: Methods for determining the minimum ignition
temperatures of dust.
Method B: Dust cloud in a furnace at a constant temperature.
ASTM E1491-06: Standard test method for minimum auto ignition
temperature of dust clouds.
IEC 61241-2 replaced by ISO/IEC 80079-20-2:2016.
Electrical apparatus for use in the presence of combustible dust.
Test methods: Methods for determining the minimum ignition
temperatures of dust.
ISO/IEC 80079-20-2:2016 Explosive atmospheres. Material
characteristics. Combustible dusts test methods
GB / T 16429 "minimum ignition temperature of a dust cloud testing
methods"
Technical parameters:
1. The Test is carried on the in Godbert-Greenwald furnace.
2. The heating furnace is consisting of the vertical quartz tubes.
The hole is at the bottom of the tube.
3. Furnace operating temperature range: room temperature ~ 800 ºC
4.The operating temperature can rise to 1000 ºC to clean the test
chamber.
5. Temperature accuracy: ± 1% (higher than 500 ºC), ± 3% (lower
than 300 ºC).
6. The pressure of the dispersion air chamber: 0 ~ 1 bar
7. The pressure accuracy of the air storage device: ± 5%
8. Size: 500X300X450 mm.
9. Power: 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.
| PRODUCT NAME | Flammability Testing Equipment |
| Single gross weight | 120KG |
| TEMPERATURE ACCURACY | ± 1% (higher Than 500), ± 3% (lower Than 300) |
| Test pressure of specimen | 1.0N±0.1N |
| FURNACE OPERATING TEMP RANGE | Room Temperature ~ 800 |
| SIZE | 500X300X450 mm |
| USAGE | Minimum Ignition Temperature Tester |
| POWER | 230V, 50HZ |
| PRESSURE OF THE DISPERSION AIR CHAMBER | 0 ~ 1 Bar |
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