Glow Wire Tester:
Product Details: Model ZLT-GTR
The ZLT-GTR Glow Wire Tester is designed to evaluate the fire resistance of materials through a standardized fire hazard test, in compliance with IEC60695-2-10, IEC60335, and IEC60598 standards. This equipment simulates an ignition source using an electrically heated wire loop, against which the test sample is pressed with a constant force. A miniature jacket thermocouple measures the temperature of the wire loop accurately.
The sample is securely mounted on a carriage, and a weight of 1 N is applied via a tensioning cord, ensuring consistent pressure during testing. The device includes scales for measuring flame height and penetration depth. Below the wire loop, a pine wood board covered with tissue paper is positioned to assess the risk of fire spreading from burning droplets or glowing particles. Calibration is performed using silver foil, which melts at 960°C, ensuring the system’s accuracy.
Standard Equipment Included:
- One nickel-chromium wire loop (Φ 4 mm), as per IEC60695-2-10 figure 1, with a clamping mechanism and a Φ 0.6 mm thermocouple hole.
- One carriage with a specimen fixture, featuring an adjustable approach and withdrawal speed between 10 mm/s and 25 mm/s.
- One fine rope pull mechanism with weights to apply a load of 1 ± 0.2 N.
- One 7 mm penetration depth gauge with a maximum pointer and stop.
- One flame height measurement scale.
- One high-current isolating transformer to heat the wire loop, along with a variable ratio transformer for precise temperature control up to 960 ± 15°C.
- One type K thermocouple (Chromel-Alumel), Φ 1.0 mm, approximately 500 mm long, with a digital display ranging from 0–1050°C.
- One chamber with a volume of at least 0.5 m³, featuring a black interior.
- One 10 mm thick wooden board and 10 sheets of tissue paper (12g/m² to 30g/m²).
Power Supply: 220V 50Hz (custom voltages available upon request).
This comprehensive testing apparatus ensures reliable and accurate evaluation of material flammability, making it ideal for laboratories and quality assurance departments.
[Image: Glow Wire Tester Flammability Testing IEC 60695-2-10/11/12/13]
(Click to view full-size image)
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