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Radiation Resistance Detector Uv resistance Tester
I. Use
NF-5 type radiation resistance detector is testing equipment,
suitable for automobile laminated glass, building laminated glass
and fireproof glass and other kinds of laminated glass UV
resistance test, widely used in deep processing glass enterprises
and all levels of quality supervision and inspection departments.
Ii. Equipment structure and working principle
This instrument uses ozonless quartz tube type medium pressure
mercury vapor arc lamp as radiation source to illuminate laminated
glass, in order to determine whether the glass after a period of
time irradiation will appear obvious color change or transmission
ratio decrease phenomenon. The shape of the instrument is shown in
the figure, which is composed of power supply, UV lamp, sample
bucket, motor, reducer, control circuit, etc. The UV lamp is placed
on the vertical axis of the sample barrel inside the instrument,
and the sample barrel is driven by the motor and the reducer to
rotate around the vertical axis. The sample is placed on the inner
wall of the sample barrel to obtain uniform radiation illumination
through the rotation of the sample barrel. The control circuit
controls the irradiation time and the temperature in the instrument
cavity to meet the test requirements.
2. Technical Parameters
Irradiation light source | Ozone-free quartz tube medium pressure mercury vapor arc lamp |
Length of lamp tube | 360mm |
Diameter of lamp tube | The 9.5 mm |
Length of electric arc | 300±14mm |
Power supply and transformer | |
Power supply | 220V |
Power of operation | 750±50W |
Peak starting pressure | 1100V |
Voltage of operation | 500±50V |
Sample size and thickness | |
Dimensions | 76mm×300mm |
thickness | 6mm~30mm |
Speed of sample barrel | 1~5 RPM |
Temperature control range | Room temperature ~100ºC |
Time setting range | 0~300h |
accuracy | 0.1 s |
Iv. Operation method
1. Clean the sample with defatted cotton soaked in absolute
ethanol. First, test the transmittance of the sample according to
GB5137.2 method, and then put the sample into the sample barrel of
the tester, and close the sample hatch door.
2. Adjust the time and temperature regulator on the control panel
to set the irradiation time and the test temperature of the sample.
3. Turn on the power of the instrument, press the "Power" button to
open the main power switch of the instrument.
4. Press the "UV lamp" button to light the UV lamp.
5. Press the "sample bucket" button to rotate the sample bucket.
6. Press "Temperature" button to start the temperature control
function. When the temperature in the cavity exceeds the set
temperature, the axial fan on the top of the instrument
automatically turns on the heat dissipation to achieve the purpose
of constant temperature.
7. Press the "time" button to start the time recording. When the
running time reaches the preset time, all work will be stopped, and
only the total power supply will be kept in the on-standby state.
8. Press the "Power" button to turn off the instrument.
9. Open the door of the sample compartment, take out the sample,
and test the transmission ratio of the irradiated sample.
V. Instrument maintenance and troubleshooting
1, the instrument because of the UV lamp power is large, the power
transformer will produce higher temperature, the machine has been
designed for transformer cooling air duct, therefore, the
instrument should be placed in the room and the wall should be set
apart 20cm spacing for heat dissipation.
2, the transformer has magnetic saturation characteristics,
therefore, turn off the UV lamp and then turn on again needs a few
minutes of time, otherwise the UV lamp can not be lit.