Overview
The AISRY ASR-4324 glowing wire tester is used to simulate the thermal stress of electrical and electronic products, household appliances and their materials in a short period of time due to heat sources such as glowing components or overload resistors under fault or overload conditions to assess the fire hazard of products. The instrument is suitable for fire hazard testing and combustion performance testing.
Features
1. The test chamber adopts the left and right split design, the left part is the hot combustion chamber, and the right part is the electrical control room, with a clear structure.
2. The sample trolley is driven by a motor and can automatically drive forward and backward, and is automatically controlled during the test.
3. The weight system is used to maintain a constant pressure of 1N on the sample, and a limit device is used to ensure that the pressing depth is 7mm.
4. The electrical control system precisely controls the temperature of the scorching wire by adjusting the size of the scorching current, and the temperature control instrument has high accuracy.
5. Using K-type armored Thermocouple for temperature measurement, Reliability is high.
6. Equipped with multiple digital display time relays, it can preset and control the burning time (Ta), the measurement of the flame ignition time (Ti) and the flame extinguishment time (Te) respectively.
7. The test space is 0.5 cubic meters, and the glowing wire is made of nickel/chrome wire with a diameter of 4.0mm.
8. The shell is made of stainless steel.
Principle
During the test, the specimen is clamped on the sample holder, and the sample trolley is driven by a motor to move to the right to the fixed glowing wire probe. A force of 1N is applied to the specimen through the weight system and the pressing depth is limited to 7mm. The glowing time (Ta) is preset controlled by the time relay. The temperature of the glowing wire (range 500~ 1000 ° C) is controlled by adjusting the heating current, and accurate measurement and feedback are carried out by the K-type armored Thermocouple and temperature control instrument. During the test, the flame onset time (Ti) and flame extinguishment time (Te) can be recorded separately.
Applications
Fire hazard test and combustion performance test for electrical and electronic products, household appliances and their materials
Standards
IEC60695-2-10/11/12/13、IEC60669-1、IEC60884-1、UL1598、GB5169.10、GB5169.11、GB4706.1
Steps
1. Turn on the power switch.
2. Use the heating current regulator and heating start switch (T-rise) to adjust the current, so that the scorching wire heats up to the set temperature.
3. Clip the sample onto the sample holder.
4. Press the run start switch, and the sample trolley starts to move.
5. Press the test start switch, the instrument enters the state to be tested, the sample contacts the scorching wire, and Timer T1 starts to time the scorching time (Ta).
6. Observe the sample. If ignition starts, immediately press the ignition timing stop switch (T2 stops). At this time, T2 (Ti) stops timing and T3 (Te) starts timing.
7. When the flame is extinguished, immediately press the combustion timing stop switch (T3 stop), T3 (Te) stop timing.
8. After the test, press the test stop switch and the operation stop switch.
9. If lighting or ventilation is required, lighting switches and fan switches can be used during non-hot processes.
Notice
• When the scorching wire is heating up, please close the door and observe to avoid burns.
• The power supply should use a three-pole socket with a reliable ground wire.
• Take care to protect the Thermocouple and glowing wire of the thermostat. Be careful not to damage the Thermocouple when cleaning the caking on the top of the glowing wire. Thermocouple is a consumable and is not covered by the warranty.
• Be sure to pay attention to polarity when replacing the Thermocouple.
• Do not turn on the lighting switch and exhaust switch during the burning process.
• If you find that the combustion flame of the hot material is too large, please immediately turn off the power switch, unplug the power cord, and use a fire extinguisher to extinguish the fire.
